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DUCK LANE – SMALL LIFT STATION
FOR
CHERRY TREE RWD
ADAIR COUNTY, OKLAHOMA
SEPTEMBER 2017
TECHNICAL SPECIFICATIONS
SPECIFICATIONS INDEX
SECTION LIST
Section 01100 Summary of Work
Section 01270
Section 01310
Section 01330
Section 01420
Price and Payment
Project Management and Coordination
Submittal Procedure
References
Section 01430
Section 01770
Section 01780
Quality Assurance
Closeout Procedures
Closeout Submittals
Section 02230 Clearing & Grubbing
Section 02310 Grading
Section 02315
Section 02316
Excavation, Trenching and Backfill
Rock Excavation
Section 02370 Temporary Erosion and Sediment Control
Section 02510
Section 02530
Section 02532
Section 02534
Section 02823
Section 02920
Section 03300
Section 04410
Water Distribution (Force Main)
Sanitary Sewer Mains
Sanitary Sewer Manholes
Submersible Pumping Station
Chainlink Fence
Topsoiling, Seeding, Fertilizing and Mulching
Cast-In-Place Concrete (Non-Structural)
Packaged Engine Generator
SECTION 01100
SUMMARY OF WORK
PART 1 - GENERAL
1.01 SUMMARY
A. Provide the following to complete the work in these Specifications and Contract Drawings:
1. Tools 2. Equipment 3. Materials 4. Labor 5. Supplies 6. Manufactured articles 7. All transportation to complete the work 8. Temporary facilities
B. Incidentals Items: Furnish all work, materials, and services not expressly
provided by others or not expressly called for in the contract, but which are necessary for the completion of the work.
1.02 SITE LOCATION
A. Location: About 3.5 miles SW of Stilwell, OK. Section 27, Range 25 East, Township 15 North
1.03 SUMMARY OF WORK TO BE DONE BY CONTRACTOR
A. Installation of 50 GPM Submersible Pumping Station and appurtenances. 1.04 ADDITIONAL INFORMATION
A. For technical questions contact:
Cherokee Nation - SFC Cason LeBlanc, PE 115 N Street, Tahlequah, OK 74464 (918) 453-5321 [email protected]
B. For site information contact:
Cherokee Nation – SFC Chris Sams, Engineer Manager 115 N Street, Tahlequah, OK 74464 (918) 453-5131 [email protected]
END OF SECTION
SECTION 01270
PRICE AND PAYMENT
PART 1 - GENERAL
1.01 SUMMARY
A. Work covered by this section includes:
1. Method of measurement 2. Basis of payment
1.02 PAYMENT
A. Payment is for completed and accepted work, including incidentals, performed in strict accordance with the drawings and specifications.
B. Unless otherwise noted, mobilization and demobilization of equipment are
included in the bid price of each item.
C. Payment includes:
1. Mobilization and demobilization of equipment and materials 2. Labor 3. Materials 4. Equipment 5. Tools 6. Testing equipment 7. General requirements in Division 01.
a. Submittals b. Record drawings c. Temporary facilities and controls d. Operation and maintenance manual
END OF SECTION
SECTION 01310
PROJECT MANAGEMENT AND COORDINATION
PART 1 - GENERAL
1.01 SUMMARY
A. Section includes construction scheduling and coordination.
PART 2 - PRODUCTS (Not applicable)
PART 3 - EXECUTION
3.01 PRE-CONSTRUCTION CONFERENCE
A. Representatives from the following must attend:
1. Prime Contractor 2. Engineer 3. Contracting Officer
B. Additional representatives, municipal personnel, and subcontractors may
attend.
C. The Contracting Officer will arrange the location, date, and time of the meeting.
D. The Contractor is responsible for notifying subcontractors of meeting time and
date. 3.02 CONSTRUCTION SCHEDULE
A. Provide the Engineer with a written construction schedule including the anticipated start and completion dates of each major work item.
B. Present the schedule to the Engineer at the pre-construction meeting.
C. Notify the Engineer three full business days in advance of any start of
construction.
D. Submit major changes to the schedule to the Engineer in writing.
END OF SECTION
SECTION 01330
SUBMITTAL PROCEDURE
PART 1 - GENERAL
1.01 SUMMARY
A. Section includes submittal procedures 1.02 RELATED SECTIONS
A. Section 017800 – Closeout Submittals Procedures
PART 2 - PRODUCTS (Not applicable)
PART 3 - EXECUTION
3.01 SUBMITTAL PROCEDURES
A. The required submittals are listed in Part 2 - Products of each section.
B. Provide three copies of each submittal to the Engineer.
C. Identify each cut sheet or shop drawing with the following information:
1. Contract or Purchase Order number
2. Supplier
3. Specification Section number
D. Submit the following information (if applicable):
1. Manufacturer’s cut sheets: Show compliance with references (e.g. applicable ASTM, AWWA standards)
2. Laboratory results
3. Dimensional or shop drawings
4. Any other information necessary to show compliance with the
specifications
E. Identify variations from the Contract Documents and product or system limitations that may be detrimental to successful performance of the completed work.
F. Identify and re-submit all changes made since previous submittal.
G. Distribute copies of approved submittals to concerned parties, (i.e. suppliers,
sub-contractors).
H. Communicate in writing any inability to comply.
I. Allow three weeks for submittal approval.
J. Replace unapproved materials at the Contractor’s expense.
END OF SECTION
SECTION 01420
REFERENCES
PART 1 - GENERAL
1.01 SUMMARY
A. Section includes
1. Organizations, associations, or appropriate agencies with jurisdiction that have references, standards, laws, or regulations cited in these specifications.
1.02 LIST OF ORGANIZATIONS, ASSOCIATIONS & AGENCIES
A. National Standards Organizations & Associations
American Association of State Highway and
Transportation Officials (AASHTO)
444 North Capital Street NW, Suite 249
Washington DC, 20001
(202) 624-5800
www.aashto.org
American Concrete Institute (ACI)
ACI International
PO Box 9094
Farmington Hills, Michigan 48333-9094
(810) 848-3700
www.aci-int.org
American Society for Testing and Materials (ASTM)
100 bar Harbor Drive
West Conshohocken, Pa 19428-2959
(610) 832-9585
www.astm.org
American Water Works Association AWWA
6666 West Quincy Avenue
Denver, CO 80235
(303) 794-7711
www.awwa.org
National Electric Code (NEC)
National Fire and Protection Association
1 Batterymarch Park
Quincy, MA 02269-9959
1 888 632-2633
www.nec.com
National Electrical Manufacturer’s Association
NEMA
1300 North 17th Street
Rosslyn, VA 22209
(703) 841-3200
www.nema.org
Underwriters’ Laboratories, Inc. UL
333 Pfingston Road
Northbrook, IL 60062
(847) 272-8800
www.ul.com
B. Federal Agencies
Environmental Protection Agency (EPA) Region 5
77 West Jackson
Chicago, IL 60604-3507
http://www.epa.gov/r5water/
Occupational Health and Safety Administration
Region 5 (OSHA)
238 South Dearborn Street, Room 3244
Chicago, IL 60604
www.osha.gov
C. State Agencies
Oklahoma Department of Environmental Quality
707 N. Robinson
P.O. Box 1677
OKC, OK 73102-6010
www.deq.state.ok.us
PART 2 - PRODUCTS (Not applicable)
PART 3 - EXECUTION
3.01 REFERENCES, STANDARDS, LAWS, OR REGULATIONS CITED IN THESE
SPECIFICATIONS
A. Use latest revision of all references, standards, laws, or regulations.
END OF SECTION
SECTION 01430
QUALITY ASSURANCE
PART 1 - GENERAL
1.01 SUMMARY
A. Section includes:
1. Pre-requisites and procedures to assure the quality of construction.
1.02 RELATED SECTIONS
A. Section 01781 – Warranties 1.03 INSTALLER QUALIFICATIONS
A. Perform work under the direction of personnel licensed in the state in which construction is located and where licensing of the trade is regulated by the state including, but not limited to:
1. Plumbing 2. Well drilling 3. Septic system installation 4. HVAC 5. Rock blasting 6. Electrical work
PART 2 - PRODUCTS (Not applicable)
PART 3 - EXECUTION
3.01 CONTROL OF INSTALLATION
A. Inspect materials for acceptability when delivered to the site.
B. Store and handle materials to prevent damage.
C. Perform work in accordance with the specifications.
D. Comply fully with manufacturers’ instructions.
E. If manufacturers’ instructions conflict with contract documents, request clarification from Engineer before proceeding.
F. Correct defective work to conform to the applicable specification.
3.02 MANUFACTURER’S FIELD SERVICES
A. Provide reports of observations and documentation of workmanship to the Engineer within 30 calendar days after manufacturers’ field services are provided.
3.03 WARRANTY
A. Provide a minimum one-year warranty for all materials and labor, covering
defects in the materials or deficiencies resulting from contractor installation.
B. Provide additional warranties as required by other sections.
END OF SECTION
SECTION 01770
CLOSEOUT PROCEDURES
PART 1 - GENERAL
1.01 SUMMARY
A. Section includes Information on closeout procedures and site cleanup. 3.04 RELATED SECTIONS
A. Section 01330 – Submittals 1.02 CLOSEOUT PROCEDURES
A. Submit, to the Engineer, written certification that work is complete and ready for Final Inspection.
B. Provide warranties and record documents (e.g. as-built drawings) to Engineer
within ten business days after date of first beneficial use or at the Final Inspection, which ever occurs first.
1.03 FINAL CLEANING
A. Complete clean up before the Final Inspection.
B. Remove waste and erosions control devices, surplus materials, rubbish, and construction facilities from the site.
1.04 FINAL INSPECTION
A. The Engineer will schedule the Final Inspection at a day and time convenient to all parties.
B. Conduct the Final Inspection of the facilities in the presence of the Owner, the
Engineer, Prime Contractor, and any other parties with an interest in the completed project.
C. Final Inspection shall include all facilities installed under the Contract. 1.05 PUNCH LIST
A. The Engineer will provide a letter (punch list) to the Contractor listing the deficiencies noted during the Final Inspection
B. Correct the deficiencies in conformance with the specifications and Contract
Drawings.
C. Final payment will be withheld until all deficiencies are corrected.
END OF SECTION
SECTION 01780
CLOSEOUT SUBMITTALS
PART 1 - GENERAL
1.01 SUMMARY A. This section describes the requirements for closeout submittals including,
record drawings, warranties and general operation and maintenance information.
1.02 RELATED WORK
A. Section 01770 – Closeout Procedures B. Section 01785 – Operation and Maintenance Manuals
1.03 DELIVERY
A. Provide all closeout submittals meeting these requirements and any specific requirements of each section.
B. Closeout Submittals must be received before payment is requested for the
work that the drawings describe or illustrate. C. All closeout submittals must be received in a correct and complete manner
before final payment can be made. If material is deficient, the deficiencies will be indicated in punch lists (Section 01770).
1.04 DEFINITIONS
A. Record Drawing: A drawing showing the actual installation of facilities, showing changes from the plans, and showing detail enough that future persons can readily locate all objects.
B. Ties: Measurements from permanent easily located objects to an installed
object. PART 2 – PRODUCTS (NOT APPLICABLE)
PART 3 - EXECUTION
3.01 RECORD DRAWINGS
A. Provide record data in one of the following manners:
1. On a set of project drawings, neatly draw tie measurements and changes. 2. On separate 8½ X 11 sheets, neatly draw site sketches, structure
sketches, etc., indicating the necessary information. B. Provide three (3) swing tie measurements to all buried utility objects that may
need to be located in the future, including, but not limited to: 1. Gate valves 2. Corporation stops 3. Curb stops 4. Water main fittings 5. Couplings to existing water systems. 6. Cleanouts 7. Sewer wyes. 8. Utility crossings. 9. Septic tank manholes and access covers. 10. Corners of drainfields C. Provide offset measurements for buried utilities (e.g. water main) installed
parallel to roads. D. Provide as-built elevation data for all items that have elevations shown on the
plan drawings, including, but not limited to, the following:
1. Manhole inverts (inlet and outlet) 2. Manhole rims 3. Lift station invert 4. Lift station top 5. Lift station pipe penetrations 6. Float elevations 7. Septic tank elevations 8. Elevations of pipe entering and leaving structures 9. Other elevations indicated on profiles.
E. Provide installed bid schedule items quantities for individual facilities on 8½ X
11 sheets. 1. Engineer may supply standard forms for use by the contractor.
3.02 WARRANTIES A. Submit all warranty information regarding the materials installed. 3.03 OPERATION AND MAINTENANCE INFORMATION
A. Submit all operation and maintenance information as included in the packaging from the manufacturer regarding the materials installed.
B. Additional project specific operation and maintenance requirements are listed in Section 01785.
END OF SECTION
SECTION 02230
CLEARING AND GRUBBING
PART 1 - GENERAL
1.01 SUMMARY
A. Section includes clearing and grubbing of site. 1.02 PROJECT SITE CONDITIONS
A. Verify the nature and location of the Work as to general and local conditions. PART 2 - PRODUCTS (Not applicable)
PART 3 - EXECUTION
3.01 GENERAL
A. Dispose of surplus material off site in accordance with applicable ordinances and environmental requirements.
3.02 SITE PREPARATION
A. Identify and mark limits of area to be cleared.
B. Locate and mark features to be protected including:
1. Existing utilities 2. Bench marks and existing structures
3.03 Clearing and Grubbing
A. Remove obstructions such as brush, trees, logs, stumps, and roots, stones larger than 6 inches, broken concrete, pavement, debris, equipment, materials, and structures required for completion of the work.
B. Clear areas required for access to the site.
C. Remove debris, rock, plant life, and other material not incorporated in the work.
D. Add any additional requirements.
E. Notify the Engineer when site preparation is complete.
END OF SECTION
SECTION 02310
GRADING
PART 1 - GENERAL
1.01 SUMMARY
A. Section includes:
1. Rough and finished site grading of areas disturbed during construction. PART 2 - PRODUCTS (Not applicable)
PART 3 - EXECUTION
3.01 ROUGH GRADING
A. Grade site to prevent surface water from flowing into excavations and trenches.
B. Maintain existing drainage.
C. Remove any water accumulated in the excavation by pumping or other
approved method.
D. If sub-grade is altered, restore to its proper bearing capacity at Contractor’s expense.
3.02 FINISH GRADING
A. Grade after all structures and piping are installed. B. Grade site to true grades as shown on the plans.
C. Ensure that drainage is away from structures.
D. Dress and trim all slopes for a uniform and smooth appearance.
END OF SECTION
SECTION 02315
EXCAVATION, TRENCHING AND BACKFILL
PART 1 - GENERAL
1.01 SUMMARY
A. Section includes:
1. Excavation, trenching, and backfill necessary for the construction of the facilities as indicated on the plans including, but not limited to water mains and service lines, sewer mains and service lines, concrete manholes, septic tanks, and other structures.
1.02 REFERENCES
A. Reference latest manual revision or ASTM standard. B. Manual on Uniform Traffic Control Devices.
C. ASTM D698 – Test Method for Laboratory Compaction Characteristic of Soil
Using Standard Effort.
D. ASTM D1556 – Test Method for Density and Unit Weight of Soil in Place by the Sand-Cone Method.
E. ASTM D1557 – Test Method for Laboratory Compaction Characteristics of Soil
Using Modified Effort.
F. ASTM D2922 – Test Method for Density of Soil and Soil Aggregate in Place by Nuclear Methods.
G. ASTM D2487 – Classification of Soils for Engineering.
H. ASTM D3017 – Test Method for Water Content of Soil and Rock in Place by
Nuclear Methods. 1.03 SUBMITTALS (if required)
A. Barricades and lights B. Shoring C. Imported bedding material
1.04 DEFINITIONS
A. Soil Materials as summarized in the following table and defined in ASTM D2321 and ASTM D2487.
Description and Comparison of Soil Material Classifications
ASTM D2321 ASTM D2487
Class Type
USCS
Group
Symbol Description
IA Manufactured aggregates: ¼
to 1 ½ inch open graded,
clean.
* None Closest to “Poorly graded gravel (GP)”
IB Manufactured aggregates:
¼ to 1 ½ inch dense graded,
clean.
* None Closest to “Poorly graded gravel with sand
(GP)”
II
Coarse sands and gravels
with maximum particle size
of 1 ½ inch clean.
GW Well-graded gravels and gravel-sand mixtures;
little or no fines.
GP Poorly graded gravels and gravel sand
mixtures little or no fines.
SW Well-graded sands and gravelly sands; little or
no fines.
SP Poorly graded sands and gravelly sands; little
or no fines
Coarse sands and gravels
with maximum particle size
of 1 ½ inch, borderline
clean.
GW-GC
SP-SM
Etc.
Sands and gravels which are borderline
between clean and with fines
III
Fine sand and clayey
gravels.
GM Silty gravels, gravel-sand-silt mixtures.
GC Clayey gravels, gravel-sand-clay mixtures
SM Silty sands, sand-silt mixtures
SC Clayey sands, sand-clay mixtures
IV
Fine grained soils
(inorganic)
ML Inorganic silts and very fine sands, rock flour,
silty or clayey fine sands, silts with slight
plasticity
CL Inorganic clays of low to medium plasticity,
gravely clays, sandy clays, silty clays, lean
clays
MH Inorganic silts, micaceous or diatomaceous
fine sandy or silty soils, elastic silts
CH Inorganic clays of high plasticity, fat clays.
V
Organic soils
OL Organic silts and organic silty clays of low
plasticity
OH Organic clays of medium to high plasticity,
organic silts
PT Peat and other high organic soils
* USCS system is limited to naturally occurring soils. Manufactured aggregates not covered.
PART 2 - PRODUCTS
2.01 BEDDING, HAUNCHING AND INITIAL BACKFILL MATERIAL
A. Class I, Class II or Class III, utilized in accordance with restrictions described in Part 3 - Execution.
PART 3 - EXECUTION
3.01 GENERAL
A. Conform to recommended safety standards, identified, but not limited to, OSHA 1910 and 1926.
B. No workers may enter any trench or excavation without the prior approval of
the Competent Person on site.
C. Obtain all permits from appropriate road agency for construction within road right of way.
D. Repair damage resulting from settlement, slides, cave-ins, water pressure,
and other causes.
E. Provide adequate signs, barricades, fences, and amber lights and take all necessary precautions to protect the work and the safety of the public in all construction areas.
1. Placement of construction signs and barricades shall conform to the
“Manual on Uniform Traffic Control Devices.”
2. Protect barricades and obstructions at night by amber signal lights that burn from sunset to sunrise.
3. Barricades
a. White or with reflective paint to increase their visibility at night.
b. Commercial grade.
4. Minimize obstruction to traffic and inconvenience to the public and
residents near the work.
F. Road, Driveway, and Sidewalk Crossing:
1. Comply with all construction and material requirements of roadway authorities having jurisdiction.
2. Maintain one open lane of traffic at all times. 3.02 PREPARATION
A. Layout and Staking:
1. Lines and building location sites established and staked by the Contractor.
2. Notify the Engineer at least three business days in advance of the times and places that stakes and benchmarks will be required.
3. Preserve stakes and benchmarks when set. Re-staking for disturbed or
displaced stakes shall be at the Contractor’s expense.
B. Close no road or street without permission of the proper authority.
C. Keep fire hydrants accessible.
D. Insure that gutters, sewer inlets, drainage, and irrigation ditches are kept functional.
3.03 PROTECTION OF EXCAVATION
A. Provide suitable sheathing, shoring, and/or bracing to:
1. Prevent excavation from caving. 2. Provide safe working conditions to protect workers and property.
B. Repair damage resulting from settlement, slides, cave-ins, and water
infiltration at Contractor’s expense. 3.04 GENERAL EXCAVATION
A. Excavate by open cut method unless otherwise approved by the Engineer or as required by applicable encroachment permits.
B. Remove trees and stumps from excavation and site according to Section
02230 – Clearing and Grubbing.
C. Remove and stockpile existing topsoil and suitable backfill.
D. Dispose of unsuitable backfill at the location shown in the Drawings or as approved by the Engineer.
E. Dispose of excess material, including rock, broken concrete and bituminous materials, debris, at the location shown in the Drawings or as approved by the Engineer.
3.05 PIPE LINE EXCAVATION
A. Install facilities as staked unless otherwise approved by Engineer.
B. Maintain surface drainage away from trenching or excavation. 3.06 STRUCTURE EXCAVATION
A. Install facilities as staked unless otherwise approved by Engineer.
B. Maintain surface drainage away from excavation.
C. Maintain a minimum 1-foot clearance between outer surface of structure being installed and wall of excavation unless concrete for walls, floors, and footings are authorized to be placed directly against excavated surfaces.
D. Restore unauthorized over excavation at Contractor’s expense.
1. Restore to proper elevation by filling with approved granular bedding
material.
E. Conform to paragraph 3.08 for backfill around structures unless requirements that are more stringent are indicated in other sections of the specifications.
F. Compact in 12-inch, loose measure lifts, to a density not less than the density
of the surrounding undisturbed soil unless more stringent requirements are indicated in other sections of the specifications.
3.07 TRENCHING
A. Bottom width: No less than 12 inches or more than 24 inches wider than the outside diameter of the pipe.
B. Remove large stones, ledge rock, and boulders to provide a 4-inch minimum
clearance for all pipe.
C. Keep walls as nearly vertical as soil conditions permit below the top of pipe.
D. Trench width above pipe may be as wide as required for shoring and sheeting, and proper installation of work.
E. Ensure trench is on proper alignment and center pipe within the trench.
F. Depth: Provide minimum cover identified in the specifications, or to depths shown on plans.
G. Accurately shape bottom of trench to provide uniform bearing and support for
pipe.
H. Excavate bell holes and depressions for joints after bottom of trench is graded.
1. Excavate bell holes and depressions to the minimum length, depth, and width required to make the particular joint.
3.08 BEDDING
A. If existing soil cannot provide uniform, stable bearing support, over-excavate 4 inches below bottom of pipe or structure.
B. Embedment and the backfill up to 6 inches above the pipe crown shall be
done in the presence of the Engineer or his/her representative.
1. Violation of this provision will require the removal and replacement of the backfill at Contractor’s expense, even if backfill was correctly placed and compacted.
C. Compact in lifts not to exceed 6 inches in loose measure.
D. Utilize Class I, II, or III materials as appropriate for bedding as listed in the
following table.
Use of Soils and Aggregate for Bedding
Class IA Class IB Class II Class III
General Excellent pipe
support.
Excellent
drainage.
Excellent pipe
support. Good
drainage.
Minimizes
migration of
adjacent material.
Good pipe
support. Fair
drainage.
Reasonable pipe
support. Poor
drainage
Compaction Not required Not required Required 85% of
Standard
Proctor.
Required 90%
of Standard
Proctor.
Wet Conditions
(below current
or future water
table). Rock
Acceptable.
Must use same
material for
Haunching.
Acceptable. Must
use same material
for Haunching.
Acceptable.
Clean groups
only suitable for
drainage blanket.
Not- Acceptable
Cuts
Dry Conditions Acceptable Acceptable Acceptable Acceptable
3.09 HAUNCHING AND INITIAL BACKFILL
A. General
1. Provide imported backfill if native soil is unsuitable for haunching and initial backfill. a. Unsuitable native soil id defined as solid or loose rock, dry or frozen
lumps greater than ¾ inches in diameter (in any dimension), or containing organic material, or any other material that could damage the pipe.
2. Provide complete and uniform bearing and support for the pipe, including
allowance for bell holes, or structure.
3. Work material under and around the pipe to ensure full pipe support.
4. Hand tamp to prevent movement of the pipe during placement of material.
5. Compact in lifts not to exceed 6 inches in loose measure.
6. Avoid contact between the pipe and compaction equipment.
B. Utilize Class I, II, or III materials as appropriate for haunching and initial backfill as listed in the following table. No frozen materials or frozen clods will be permitted.
Use of Soils and Aggregate for Haunching and Initial Backfill
Class IA Class IB Class II Class III
General Excellent pipe
support.
Excellent
drainage. Install
to a minimum of
6” above the
pipe crown.
Excellent pipe
support. Good
drainage.
Minimizes
migration of
adjacent material.
Install to a
minimum of 6”
above the pipe
crown.
Good pipe
support. Fair
drainage. Install
and compact to a
minimum of 6”
above the pipe
crown.
Reasonable pipe
support. Poor
drainage. Install
and compact to
a minimum of
6” above the
pipe crown.
Compaction Not required Not required Required 85% of
Standard
Proctor. 6-inch
maximum lifts.
Required 90%
of Standard
Proctor. 6-inch
maximum lifts.
Wet Conditions Acceptable. Acceptable. Must Acceptable. Not- Acceptable
(below current
or future water
table). Rock
Cuts
Must use same
material for
Bedding. Extend
Haunching to the
top crown of the
pipe.
use same material
for Bedding.
Extend Haunching
to the top crown of
the pipe.
Clean groups
only suitable for
drainage.
Dry Conditions Acceptable Acceptable Acceptable Acceptable
3.10 FINAL BACKFILL
A. Provide imported backfill if native soil is unsuitable for final backfill.
1. Unsuitable native soil is defined as solid or loose rock, dry or frozen lumps greater than 6 inches in diameter (in any dimension) or containing organic material, or any other material that could damage the pipe.
B. Backfill remainder of excavation with native material, free from large clods,
large stones, organic material or frost chunks.
C. Compact in 12-inch, loose measure, lifts to a density not less than the density of the surrounding undisturbed soil.
1. Provide 3 feet minimum of backfill over the pipe before wheel loading the
trench.
2. Wheel roll and mound except as otherwise required by the applicable roadway authority or permits.
D. Backfill and compact around manholes, valve boxes, and other appurtenances
in 12-inch, loose measure lifts.
1. Compact with a mechanical tamper to a density not less than 90% of the maximum dry density, determined by ASTM D 698.
E. Backfill around septic tanks in 18-inch lifts.
1. Compact in a manner that will not produce undue strain on the tank.
2. Compaction may be accomplished with the use of water, provided the
material is thoroughly wetted from the bottom up, and the tank is filled with water to prevent floating.
F. Repair any trenches improperly backfilled or where settlement occurs, then
refill and compact.
G. Restore surface to the required grade and compaction. Conform to Section 02310 – Grading.
H. Remove all surplus backfill materials to the location shown in the Drawings or
as approved by the Engineer. 3.11 REMOVAL OF NUISANCE WATER
A. Remove nuisance water entering the trenches. Nuisance water that can be removed through the use of sump or trash pumps is not considered dewatering.
B. Keep trenches free from water until the facilities are in place, sealed against
the entrance of water, and backfill has been placed and compacted above the water level.
3.12 LOCATE EXISTING UTILITIES
A. Field locate all existing underground utilities.
1. Utilize state “dig-safe,” “OKIE” or “one-call” hotlines.
2. Contact all other utility owners not covered by the state “dig safe” hotlines. 3.13 UTILITY CONFLICTS
A. Protect existing utilities from damage during excavation and backfilling operations.
B. Provide temporary support for existing water, gas, telephone, power, or other
utility services that cross the trench, until backfilling operations have reached the elevation of the utility being crossed.
1. Compact backfill to 95% of Standard Proctor Density under disturbed
utilities. 2. Repair or replace any damaged existing utilities at Contractor’s expense.
C. Pipe separation.
1. Horizontal Separation from existing or proposed mains:
a. Maintain a 10-foot horizontal separation (O.D. to O.D.) for the
following:
(1) Water mains (2) Sewer mains
(3) Storm sewers (4) Raw water lines (5) Oil and gas lines (6) Buried electric cables
b. Maintain a 15-foot horizontal separation for the following:
(1) All parts of septic tanks (2) Absorption fields (3) Any other sewage treatment and disposal systems.
c. Maintain a 50-foot horizontal separation from any gas storage tank.
d. Any deviation must be approved in advance by the Engineer and
permitting authority.
2. Vertical Separation
a. Vertical crossing with the water main above the sewer main:
(1) Maintain a minimum 24-inch vertical separation (O.D. to O.D.) for crossing mains.
(2) Lay pipe with joints equidistant from the point of crossing.
b. Vertical crossing with the water main below the sewer main.
(1) Maintain a minimum 24-inch vertical separation (O.D. to O.D.) for
crossing mains.
(2) No sewer line joint closer than 9 feet from the water line.
(3) Provide adequate support to prevent damage to the water main.
c. If it is impossible to meet any of the above separation distances and deviations, the following method shall be adhered to:
(1) Sewer main shall be constructed to water main pressure pipe
standards, and successfully pass a 150-psi pressure test prior to backfilling.
D. Water and sewer service crossing and parallel installation.
1. Maintain a 30-inch horizontal separation from water and sewer services.
2. Maintain a 12-inch vertical separation for crossing water and sewer services.
3. Water service line splices or joints will not be permitted within 10 feet of a
sewer line crossing. 3.14 MOVING FENCES AND MINOR STRUCTURES
A. Remove and reset culverts, drainage pipes, or other minor structures that fall within the alignment of the new construction. Restore to their original location and grade.
B. Visit the project site and determine actual conditions with regard to the
existence of old car bodies, abandoned houses, fences, driveways, trees, stumps, brush, sidewalks, approaches, and other miscellaneous obstacles to construction.
1. No separate payment will be made for the removal or replacement of
these items.
END OF SECTION
SECTION 02316
ROCK EXCAVATION
PART 1 - GENERAL
1.01 SUMMARY
A. This section pertains to the rock excavation necessary for the construction of the facilities as indicated on the plans including:
1.02 RELATED WORK
A. Section 01330 – Submittal Procedures
B. Section 02315 – Excavation, Trenching and Backfill 1.03 SUBMITTALS
A. Contractors blasting license and/ or blasting permit (if applicable). 1.04 DEFINITION
A. Solid Rock
1. Large masses of rock which, in the opinion of the Engineer, cannot be excavated without drilling, blasting, ripping equipment or other specialized equipment.
B. Loose Rock
1. Boulders and other detached stones each having a volume of 1-cubic yard
or more. PART 2 - PRODUCTS (NOT APPLICABLE)
PART 3 - EXECUTION
3.01 METHODS OF EXCAVATION
A. Rock excavation may be accomplished by any or all of the following methods depending on the rock type:
1. Excavation with earthmoving equipment including ripping with a dozer.
2. Jack-hammering
3. Blasting
3.02 RESPONSIBILITIES
A. Comply with laws, ordinances, applicable safety code requirements, and regulations relative to the handling, storage, and use of explosives.
B. Current Oklahoma blasting license required.
C. Secure necessary permits and submit to Engineer.
D. Protect adjacent utilities lines, property, and structures from blasting operation.
E. Repair damage caused by rock excavation operations.
F. Remove excavated rock from site unless otherwise directed by the Engineer.
3.03 ROCK MEASUREMENT
A. Determine rock profile by one of three methods:
1. Excavating and exposing the rock, prior to blasting.
2. Drilling prior to excavating and blasting.
3. Blasting and excavating, then measuring rock. Note: 20% reduction in rock volume shall be factored in to account for expansion.
4. Measure solid rock to the nearest 0.1 foot from the surface and no less than
every ten feet along the rock profile.
B. Trenches
1. Take measurements from the top of the rock to a point 6 inches below the invert of the pipe and 12 inches from each side of the pipe or appurtenance with a maximum 30-inch trench width allowed.
C. Structures
1. Take measurements starting at 24 inches from the edge of the structure.
2. Measure quantity of loose rock in cubic yards.
3.04 EXCAVATION AND JACK-HAMMERING
A. Excavate a minimum 4 inches deeper than the pipe invert.
B. Refill trench to the required elevation with material in accordance with Section 02315 – Excavation, Trenching, and Backfill.
3.05 BLASTING
A. Blast in accordance with OSHA guidelines.
B. Comply with conditions of blasting permit.
END OF SECTION
SECTION 02370
TEMPORARY EROSION AND SEDIMENT CONTROL
PART 1 - GENERAL
1.01 SUMMARY
A. This section includes erosion and siltation control measures accomplished using hay/straw bales, silt fences, settling basins, and diversion trenches.
1.02 RELATED WORK
A. Section 01330 – Submittals B. Section 02920 – Topsoiling, Seeding, Fertilizing, and Mulching
1.03 REFERENCES
A. Environmental Protection Agency - 1987 Congressional Amendments, Clean Water Act, Section 402.
1.04 SUBMITTALS
A. Conform to the Section 01330 – Submittal Procedures.
B. Silt fence material, (or alternate erosion control material proposed).
C. Copy of the completed and signed Notice of Intent NOI
D. Copy of the Authorization for Discharge
E. Copy of completed and signed Contractor Certification statements.
F. Inspection reports.
G. Copy of the completed and signed Notice of Termination (NOT). 1.05 QUALITY ASSURANCE
A. Erosion control materials, methods, and practices shall conform to the applicable state agency handbooks of Best Management Practices, or tribal laws established for the purpose of erosion control on construction sites.
B. Obtain and pay for permits and inspections in accordance with the provisions
of all local government agencies having jurisdiction. No additional claim for compensation will be allowed because of the contractor’s failure to obtain or pay for such permits and inspections.
PART 2 - PRODUCTS
2.01 POSTS
A. Wood, 2-inch x 2-inch x 50-inch minimum or approved steel tee posts 2.02 EROSION BALES
A. Rectangular hay or straw bales. 2.03 SILT FENCING
A. Non-woven geotextile fabric with a minimum of 95 pounds of grab tensile strength and an equivalent minimum opening size of 70 US Sieve/0.212 mm).
B. All seams shall be heat sealed or sewn.
C. Contech Non-woven geotextile C-35NW or approved equal.
2.04 OTHER
A. Other materials proposed by the Contractor shall conform to standards published by the applicable state agency handbooks of Best Management Practices (BMP’s).
PART 3 - EXECUTION
3.01 GENERAL
A. Storm Water Pollution Prevention Plan
1. The Contractor will provide a “draft” Storm Water Pollution Prevention Plan and related documents to the Owner or Engineer.
2. Review the Storm Water Pollution Prevention Plan.
a. Identify each practice the contractor(s) or subcontractor(s) are
responsible for implementing and maintaining.
b. All contractors and subcontractors who perform earth-disturbing activities must sign the Contractor Certification statement before conducting any work on the site.
c. Submit copies of the Contractor Certification statement to the
Engineer.
d. Keep copies of certifications on-site for review.
3. Keep a copy of the plan at the job site for review or post a sign at the job site with the location where the plan may be viewed.
B. Notice of Intent (NOI) for Storm Water Discharges Associated with Industrial
Activity under a NPDES General Permit.
1. Prepare NOI form.
2. Submit NOI form in accordance with the proper state or EPA requirements.
3. Submit copy of NOI to the Engineer.
4. Keep a copy of the NOI and permit number on-site for review.
C. Post a sign at the entrance of the job site.
1. Minimum size 8.5 inches by 11 inches.
2. Weather proof or protected inside a weatherproof enclosure that allows a
full view of the sign without opening the enclosure.
3. Provide the following information on the sign.
a. Permit Number b. Contact Name c. Contact Phone Number d. Project Description e. Location where the SWPPP available for viewing.
3.02 TEMPORARY EROSION CONTROL
A. Install erosion control measures before earth-disturbing construction begins.
B. Use temporary erosion control measures to protect ditches and drainage ways as shown on the detailed drawings and as directed by the Engineer.
C. Erosion Bales
1. Excavate a 3-inch deep trench at right angles to the direction of flow.
2. Bury bales in trench so water does not seep underneath.
3. Butt bales tightly together end-to-end.
4. Place one stake at each end of the bale.
5. Drive the stakes on a slant toward the previously placed bale.
D. Silt fencing
1. Construct the silt fence as shown on the plans.
2. The top of the fence fabric is 36 inches above ground level
3. Bury the bottom of the fence fabric in a 6-inch deep trench on the upslope side as shown on the drawings.
4. Place stakes every 3 feet minimum on the downstream side of the filter
fabric.
E. Sedimentation basins
1. Construct sedimentation basins to the dimensions and at the location shown in the drawings.
F. Diversion trenches
1. Construct diversion trenches to the depth and at the locations shown on
the drawings.
2. Slope sidewalls of trenches 2:1 horizontal to vertical unless otherwise shown on the drawings.
3. Seed and mulch ditch banks in conformance with Section 02920 –
Topsoiling, Seeding, Fertilizing, and Mulching.
G. Perform construction in and adjacent to rivers, streams, lakes or other waterways in such a manner as to avoid washing, sloughing or deposition of material into waterways which will result in undue or avoidable contamination, pollution or siltation of such waterways.
3.03 INSPECTION
A. Inspect every fourteen days.
B. Inspect within 24 hours after a 0.5 inches or more rain
C. A written report must be completed after each inspection.
1. Submit report to construction inspector or Engineer within two business days after inspection.
2. Keep copies of the report on-site for review. 3.04 MAINTENANCE
A. Maintain erosion control materials to ensure its continued effectiveness.
B. Remove sediment material captured by erosion control systems when it reaches 1/4 the height of the fence or bales or 1/4 the depth of sedimentation basins or diversion trenches.
C. Complete erosion control system repair within three business days after
inspection or whenever damage is discovered.
D. Maintain erosion control system until at least 100% of re-vegetation is established to a density of 70% of existing vegetation on all exposed soil areas.
3.05 NOTICE OF TERMINATION
A. Submit the Notice of Termination after:
1. All construction is complete, including punch list items.
2. All temporary erosion control devices have been removed.
3. Re-vegetation has been satisfactorily completed.
B. Provide a copy of the Notice of Termination to the Engineer, in conformance with Section 01780 – Closeout Submittals.
3.06 RECORDS
A. Retain copies of the Notice to Intent, Storm Water Pollution Prevention Plan, Notice of Termination, Contractors’ certifications, and Inspection forms for the period specified in the plan.
END OF SECTION
SECTION 02510
WATER DISTRIBUTION (FORCE MAIN)
PART 1 - GENERAL
1.01 SUMMARY
A. This section includes the installation of water mains, valves, fittings, and other appurtenant structures for community water distribution systems.
1.02 RELATED WORK
A. Section 01339 – Submittal Procedures B. Section 02315 – Excavation, Trenching and Backfill C. Section 03300 – Cast-in-place Concrete (Non-Structural)
1.03 REFERENCES
A. Use latest revisions of all References B. ANSI/AWWA C110/A21.10 – Ductile Iron and Gray Iron Fittings, 3 Inch
Through 48 Inch, for Water and Other Liquids
C. ANSI/AWWA C111/A21.11 – Rubber-Gasket Joints for Ductile Iron and Gray Iron Pressure Pipe and Fittings
D. ANSI/AWWA C150/A21.50 – Thickness Design of Ductile Iron Pipe
E. ANSI/AWWA C151/A21.51 – Ductile Iron Pipe, Centrifugally Cast, for Water or
Other Liquids
F. ANSI/AWWA C153/A21.53 – Ductile Iron Compact Fittings, 3 Inch Through 16 Inch, for Water and Other Liquids
G. ANSI/AWWA C509 – Resilient Seat Gate Valves for Water and Sewerage
Systems
H. ANSI/AWWA C515 – Reduced Wall, Resilient Seated Gate Valve for Water Supply Service
I. ANSI/AWWA C900 – Polyvinyl Chloride (PVC) Pressure Pipe, 4 Inch Through
12 Inch, for Water Distribution
J. AWWA C901 – Polyethylene (PE) Pressure Pipe and Tubing, 1/2 Inch through 3 Inch, For Water Service
K. ASTM D 2241 – Polyvinyl Chloride (PVC) Pressure Rated Pipe (SDR Series)
L. ASTM D 2321 – Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications
M. ASTM D 3139 – Joints for Plastic Pressure Pipes Using Flexible Elastomeric
Seals
N. ASTM F 477 – Elastomeric Seals (Gaskets) for Joining Plastic Pipe 1.04 INTERNET REFERENCES
A. The references given are for the Contractors information. They are not an endorsement of the manufacturer or their products.
B. United States Pipe and Foundry Company, (http://www.uspipe.com/)
C. American Cast Iron Pipe Company, (http://www.international.acipco.com/)
D. JM Manufacturing (http://www.jmpipe.com)
E. IPEX (http://www.ipexinc.com)
F. North American Pipe Corporation (http://www.northamericanpipe.com)
G. EBAA Iron, Inc., (http://www.ebaa.com)
H. ISCO industries, (http://www.isco-pipe.com)
I. Charter Plastics, Inc. (http//www.charterplastics.com)
J. Tyler Pipe (http://www.tylerpipe.com/)
K. Valmatic (http://www.valmatic.com/index.html)
1.05 SUBMITTALS
A. Water Pipe
B. Fittings
C. Special Anchoring Retainer Glands
D. Gate Valves and Boxes
E. Air release valves and vault
F. Polyethylene Pipe and fittings
G. Corporation Stops
H. Saddles
I. Air release shut-off valve
J. Method of Connection to Existing Distribution System
1.06 ACCEPTANCE
A. Work covered by this section will not be accepted until the backfilling and testing connected with the work has been completed satisfactorily.
PART 2 - PRODUCTS
2.01 WATER DISTRIBUTION PIPE AND FITTINGS
A. Pipe size, material, and pressure rating as indicated on the drawings.
B. Ductile Iron Pipe
1. Conform to AWWA C151 with a thickness design in accordance with AWWA C150.
2. Manufacturers:
a. United States Pipe and Foundry Company
b. American Cast Iron Pipe Company
c. or approved equal,
C. Polyvinyl Chloride Pipe
1. Pipe: Conform to ASTM D 2241 (SDR) or AWWA C900 (pressure class).
2. Joints: Conform to ASTM D 3139 with elastomeric seals (gaskets)
conforming to ASTM F477.
3. Manufacturers:
a. JM Manufacturing
b. IPEX
c. North American Pipe Corporation
d. or approved equal.
D. Fittings
1. Ductile Iron or PVC pipe.
a. Conform to AWWA C110 and AWWA C111 for ductile and gray iron fittings.
b. Conform to AWWA C153 for ductile iron compact fittings.
c. Manufacturers:
(1) United States Pipe and Foundry Company (2) American Cast Iron Pipe Company
(3) or approved equal
E. Thrust Restraint
1. Concrete Thrust Blocks:
a. One part Portland cement, 2.5 parts of fine aggregate, 3.5 parts
coarse aggregate and just enough water for a workable consistency.
b. #4 rebar
F. Special Anchoring Retainer Glands:
a. Ductile iron:
(1) Megalugs, EBAA Iron, Inc.
(2) or approved equal
b. PVC:
(1) 2000PV, EBAA Iron, Inc. (2) or approved equal
2. Joint Restraint Rodding:
a. 3/4 inch mild steel threaded rods b. Tie bolts c. Duc lugs
2.02 Polyethylene Pipe
A. IPS or CTS size pipe with a minimum pressure rating of 160 psi. Pipe shall conform to AWWA C901.
B. CTS size pipe: DR 9 or DR 7.
C. PS size pipe: IDR 7.
D. High density, ultra high molecular weight polyethylene pipe compound
PE-4710.
E. Stainless steel stiffeners on compression couplings made for DR 9 pipe.
F. Manufacturers:
1. ISCO industries
2. Charter Plastics, Inc
3. or approved equal. 2.03 GATE VALVES
A. Meet or exceed AWWA C509 or C515.
B. Constructed with a non-rising stem (NRS) and a 2-inch square stem-operating nut, opening counter-clockwise.
C. Supply valves with mechanical or “push-on” joints.
D. Manufacturers:
1. Waterous (American Cast Iron Pipe Company, Series 500 or Series 2500
2. or approved equal
2.04 VALVE BOXES
A. Valve boxes for valve depth of 6 feet deep or less.
1. Provide 2-piece, screw type, adjustable cast iron valve boxes.
2. Provide locking cover with:
a. Brass cotter pin or brass rod as a keeper b. “WATER” plainly marked.
3. Manufacturers:
a. Tyler series 6850
b. or approved equal
B. ACCESSORIES
1. Supply one 8-foot long gate valve key.
2.05 FLUSH HYDRANTS 2.06 Flush Hydrants
A. Non-freezing
B. Self-draining
C. 2-inch FIP inlet
D. 3-foot bury
E. Non-turning operating rod
F. All working parts: bronze and serviceable from above ground.
G. Outlet: 2.5-inch NST
H. Lockable.
I. Manufacturers:
1. Model Mainguard No. 77, Kupferle Foundry Co.
2. or approved equal 2.07 FIRE HYDRANTS
A. Conform to AWWA C502.
B. Supply fire hydrants equipped with the following:
1. An arrow cast on the hydrant showing the direction of opening as counter clockwise.
2. Two National Standard 2 ½-inch hose nozzles and one 4 ½-inch pumper
nozzle.
3. Traffic flange
4. Weep holes to allow the hydrant to drain.
5. Minimum 4 ¼-inch hydrant valve opening capable of opening against water pressure.
6. Minimum hydrant length of 3 feet as measured from the ground line to the
bottom of the trench carrying the connection pipe.
C. When a hydrant manufacturer and model is specified in the bid schedule, that exact unit must be supplied in order to maintain compatibility with the existing hydrants on the system.
D. Manufacturers:
1. Waterous (AFC) WB-67. 2. Mueller Co. – Super Centurion 3. Or approved equal
2.08 AIR RELEASE VALVE
A. Cast iron body and cover, ASTM 126, Class B.
B. Inlet: Refer to plans
C. Outlet: Refer to plans
D. Working pressure: 175 psi.
E. Stainless steel float and internal components.
F. Manufacturers:
1. Val-Matic model VM-15A
2. or approved equal. 2.09 AIR RELEASE VAULT
A. Body: PVC or PE, 15-inch diameter, or approved equal
B. Lid: Cast iron, lockable.
C. Steel Post: 4-inch I.D. by 5 feet long, galvanized, Schedule 40.
D. Air Release Connecting Piping.
1. Piping:
a. 1-inch P.E. from water main to valve inlet piping (if required).
b. Brass IPT inlet piping.
c. Brass inlet shut-off valve.
d. Galvanized iron pipe and fittings from valve to post.
e. Steel insect screen.
E. Service saddle: Brass or bronze body, stainless steel straps, o-ring seals, IP threaded outlet, 160 psi working pressure.
F. Corporation stop: Brass or bronze body, IP threaded inlet, PE compression
outlet, 160 psi working pressure. 2.10 WARNING TAPE
A. Supply detectable warning tape that is a minimum of 2 inches thick, blue or striped blue, and have printing that warns of a water line below.
B. Manufacturers
1. Trumbull Industries Inc. (http://www.trumbull-mfg.com/)
2.11 WATER TESTING LAB
A. Use a state certified lab. PART 3 - EXECUTION
3.01 EXAMINATION
A. Inspect pipe, fittings and appurtenances for defects prior to installation.
B. Reject defective, damaged, or unsound materials.
3.02 SEPARATION DISTANCE
A. Vertical: refer to Section 02315 – Excavation, Trenching and Backfill
3.03 WATER LINE INSTALLATION
A. Contractor to provide staking in accordance with Section 02315 – Excavation, Trenching and Backfill.
B. Install water lines and appurtenances in the locations, elevations, sizes and
materials shown on the drawings.
C. Refer to Section 02315 for excavation, trenching, bedding, and backfill requirements and for minimum separation distances.
D. Install pipe with at the depth noted on the drawings.
E. Install thrust restraint on all fittings and appurtenances. Contractors option:
1. Concrete Thrust Blocks:
a. Pour thrust blocks against the fitting and undisturbed earth.
b. Place concrete thrust blocks so that the pipe and joints will be
accessible for repair.
2. Special Anchoring Retainer Glands:
a. Install in accordance with manufacturer’s recommendations.
b. All pipe joints less than 20 feet from fittings with special retainer glands shall be restrained.
c. Engineer may specify additional restraint be used for pipe sections
near critical fittings.
3. Joint Restraint Rodding:
a. Rod from fitting to fitting.
b. Install tie bolts to connect tie rods, if required.
c. Install duc lugs where required to increase the width of the rodding. 3.04 WARNING TAPE INSTALLATION
A. Install warning tape in water main trench one-foot below grade maintaining the same depth throughout.
3.05 GATE VALVE INSTALLATION
A. Refer to Section 02315 for excavation and backfill requirements.
B. Install valves at locations shown on the drawings.
C. Support gate valves on a solid concrete block as shown on the drawings.
D. Set valves plumb and provide with a valve box.
E. Center the valve box over the valve with the box cover:
1. Flush with finished grade elevation.
2. Flush with the concrete pad. Prior to concrete hardening, note valve size and direction of line on concrete pad.
3.06 AIR RELEASE VALVE
A. Install at the locations and as shown on the drawings.
B. Install valve vault plumb and flush with final grade.
1. Provide 6-inch thick 1.5 minus washed gravel base.
C. Install guard post as shown in the drawings.
1. Fill post interior with concrete. 3.07 CONNECTIONS TO EXISTING DISTRIBUTION SYSTEMS
A. Shutoff of mains will not be permitted overnight, over weekends, or on federal holidays.
B. Coordinate system tie-in with the owner and/or operator of the existing utility a
minimum of three working days before any connection is made.
1. Assure the water storage tank is full before starting work.
2. Complete work before storage tank reaches the low water level.
C. Notify residents affected by the water shutoff of the time and day of shutoff a minimum of two working days in advance.
D. Start work when all the materials, equipment and labor are on site.
E. Clean all connection components with a chlorine solution prior to installation.
F. Once work on the connection has commenced, it shall proceed continuously without interruption, and as rapidly as possible until completed.
G. Visually inspect any joints not pressure tested for leakage.
1. Test under system pressure prior to backfilling
2. Test in the presence of the Engineer representative.
3. Repair and retest any joint with leakage until no leakage is visible at no
cost to the owner. 3.08 TESTING OF WATER MAIN
A. Whenever practical, before backfill is placed or joints covered, test pipe for leaks.
B. Furnish necessary material, equipment, and labor for testing including, but not
limited to: water, pump, water storage vessel, piping, pressure gauge, valve, hydrant, and corporation stop.
1. Pressure gauge shall be liquid filled with 5 psi or less increments.
C. Test duration: 2 hours minimum.
D. Maximum length of test section: 1/2 mile.
E. Testing Procedure:
1. Slowly fill test section with water and expel air from mains.
2. Verify all hydrant lead valves and main valves within the test section are
open.
3. Place test section under constant pressure.
a. 1.5 times working pressure or 150 psi, whichever is greater.
b. Do not exceed 115% of pipe pressure rating at the lowest point in the test section.
4. Pressurize the line to the original test pressure and continue test.
a. Record amount of water required to re-pressurize the line.
5. At the end of the test, re-pressurize the line to the original test pressure.
a. Record amount of water required to re-pressurize the line.
6. Add total amount of water required to re-pressurize the line during and at the end of the test and compare with the allowable leakage as calculated below.
a. If leakage is greater than allowable leakage, test fails.
F. Allowable Leakage Determination
L = (N*D*P
1/2)/7400
L = Allowable Leakage (gph) N = Total Length Tested Divided by The Standard Pipe Length D = Nominal Diameter of Pipe (inches) P = Test Pressure (psi)
Example Allowable Leakage Chart Using Formula Above PVC Pipe with 20-foot sections
Allowable Leakage/ 1000 feet (gph)
Pipe Diameter, D P = 100 psi P = 150 psi P = 200 psi P = 250 psi
4 inch 0.27 0.33 0.38 0.43
6 inch 0.41 0.50 0.57 0.64
8 inch 0.54 0.66 0.76 0.85
10 inch 0.68 0.83 0.96 1.07
12 inch 0.81 0.99 1.15 1.28
G. Repair, at no cost to owner, any section of the line that fails this test.
1. Retest all repaired sections of line, at no cost to owner, until pressure test
is successfully completed. 3.09 DISINFECTION OF WATER MAIN AND FITTINGS
A. Disinfection shall conform to Section 5 of AWWA C651.
B. Obtain water at the site for disinfection.
C. Flushing chlorinated water in accordance with Section 6 of AWWA C651.
1. Waste flushed disinfection water in an environmentally safe manner. The method used is subject to the approval of the Engineer.
D. After disinfecting and flushing but before the water main is placed in service,
collect and test water samples for bacteriological quality.
1. Sample in accordance with the Standard Methods for Examination of Water and Wastewater.
2. Take two consecutive tests, 24 hours apart.
3. Collect one sample from the new water main and one from each branch
line near the end.
a. Additional samples may be required on extremely long mains.
4. Take samples to a state certified testing lab. 5. Permanent sampling taps may be required at the direction of the
Engineer.
E. If initial disinfection fails to produce satisfactory bacteriological results, rechlorinate the mains and branch lines, flush and take new samples until satisfactory results are obtained.
1. Do not place main in service until the Engineer has received safe
bacteriological results obtained on 2 consecutive days. 3.10 RECORD DRAWINGS
A. Conform to record drawing requirements in Section 01780 – Closeout Submittals.
END OF SECTION
SECTION 02530 SANITARY SEWER MAINS
PART 1 - GENERAL 1.01 SUMMARY
A. This section includes the construction of sanitary sewer mains, sewer main testing, and connection to existing sewage collection systems.
1.02 RELATED WORK
A. Section 01330 – Submittal Procedures
B. Section 01770 – Closeout Procedures
C. Section 01780 – Closeout Submittals
D. Section 02230 - Clearing And Grubbing
E. Section 02310 – Grading
F. Section 02315 – Excavation, Trenching and Backfill
G. Section 02532 – Sanitary Sewer Manholes
H. Section 02920 – Topsoiling, Seeding, Fertilizing, and Mulching
1.03 REFERENCES
A. ANSI/AWWA C110 / A21.10 – Ductile-Iron and Gray-Iron Fittings, 3 Inch Through 48 Inch, for Water and Other Liquids
B. ANSI / AWWA C111 / A21.11 – Rubber Gasket Joints for Ductile Iron and
Gray-Iron Pressure Pipe and Fittings
C. ANSI / AWWA C151 / A21.51 – Ductile Iron Pipe, Centrifugally Cast, for Water or Other Liquids
D. ASTM A 126-93 Gray Iron Castings for Valves, Flanges, and Pipe Fittings.
E. ASTM A 746-94 Ductile Iron Gravity Sewer Pipe
F. ASTM D 1248 – Polyethylene Plastics Molding and Extrusion Materials
G. ASTM D 2122 – Determining Dimensions of Thermoplastic Pipe and Fittings
H. ASTM D 2321 – Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications
I. ASTM D2487 – Classification of Soils for Engineering
J. ASTM D 3034 – Type PSM Polyvinyl Chloride (PVC) Sewer Pipe and Fittings
K. ASTM D 3212 – Joints for Drain and Sewer Plastic Pipes Using Flexible
Elastomeric Seals
L. ASTM F 477 – Elastomeric Seals (Gaskets) for Joining Plastic Pipe
M. ASTM F 1417 – Installation Acceptance of Plastic Gravity Sewer Lines Using Low-Pressure Air
N. Oklahoma Department of Environmental Quality 252-656-5 Sanitary Sewer
Standards
1.04 SUBMITTALS
A. Submit in accordance with Section 01330 – Submittal Procedures
B. Sewer pipe
C. Warning tape
PART 2 - PRODUCTS 2.01 SEWER PIPE
A. Polyvinyl Chloride (PVC) Sewer Pipe and Fittings
1. Conform to ASTM D 3034.
2. Pipe Class SDR-35
3. Bell joints: conform to ASTM D 3212
4. Elastomeric gaskets: conform to ASTM F 477
5. Each length of pipe shall be clearly marked with the following:
a. Manufacturer
b. Nominal Pipe Size
c. The PVC Cell Classification
d. Type PSM PVC Sewer Pipe
e. ASTM Designation(s)
f. Pipe Class
B. Ductile Iron Sewer Pipe and Fittings
1. Conform to AWWA C151, ASTM A 126-93 and ASTM A 746-94.
2. Pipe Thickness: Class: 52
3. Exterior Coating: Asphaltic coating, minimum 1-mil thick
4. Rubber Gaskets: Push on joints conforming to AWWA C111
5. Interior Lining: Polyethylene meeting ASTM D 1248, fusion bonded
6. Markings: Each length of pipe shall be clearly marked with the following:
a. Manufacturer
b. Nominal Pipe Size
c. ASTM Designation
d. Pipe Class
2.02 SEWER WYES
A. Made of the same material as the pipe.
2.03 PIPE BEDDING, HAUNCHING, AND BACKFILL
A. Conform to Section 02315 – Excavation, Trenching and Backfill, Part II Products, Bedding, Haunching And Initial Backfill Material
2.04 WARNING TAPE
A. Detectable warning tape
1. Foil backed
2. Minimum of 2 inches thick
3. Green, or striped green
4. Printed warning of a sewer main below. PART 3 - EXECUTION 3.01 EXAMINATION
A. Verify that diameters are as indicated on the Drawings.
B. Verify that all products supplied are in new condition.
C. Inspect pipe and fittings for defects.
D. Remove materials from the site that are defective, damaged, used, unsound, or that otherwise do not meet the specifications.
3.02 PIPE LENGTH
A. Use the longest standard pipe length available.
3.03 SEPARATION DISTANCE
A. Vertical and horizontal: refer to Section 02315 – Excavation, Trenching and Backfill
3.04 UTILITY CONFLICTS
A. Refer to Section 02315 – Excavation, Trenching and Backfill. 3.05 PERMITS
A. Provide permits for roadway crossing, connections to existing sewer mains, construction, or any other permit or fee required to complete the sewer main installation unless otherwise directed, in writing, by the Engineer.
B. Notify the Engineer if this specification does not conform to the permit
requirements.
C. Follow the requirements of the permit if they differ from this specification. 3.06 SEWER MAIN INSTALLATION
A. Staking: Provided by the Contractor in accordance with Section 02315 – Excavation, Trenching and Backfill.
B. Material: Of the type and size shown on the Drawings or in the Bid Schedule
except as follows:
1. As required by the roadway authority or permit.
2. Ductile Iron Pipe if bury depth above the pipe crown is less than 30 inches.
C. Pipe Installation:
1. Adhere to the excavation, trenching, and backfill requirements of Section
02315 – Excavation, Trenching, and Backfill.
2. If the width of the trench exceeds that specified in Section 02315 – Excavation, Trenching and Backfill, unless previously approved by the Engineer, install concrete cradling, gravel, or other approved backfill at Contractor’s expense.
3. Install pipe and fittings in accordance with these specifications and the
manufacturer’s recommendations.
4. Install with sewer pipe laser or other method approved in writing by the Engineer.
5. Lay pipe of the size and to the line and grade indicated on the drawings.
6. Install pipe beginning at the lowest elevation and proceeding to the
highest elevation.
7. Point the spigot end in the direction of flow.
8. Protect pipe interior from soil, trench water, and foreign objects.
9. When the trench is left open or when trench conditions necessitate, temporarily plug the exposed end of pipes.
10. Install wye fittings for sewer service lines.
a. No saddles allowed on new pipe.
11. Install warning tape 24 inches below finished grade centered over sewer
main.
D. Connection to Existing Manholes:
1. Obtain tapping permit from operating utility.
2. Make connection as shown on the Drawings or as directed by the Engineer.
3. Reshape manhole base to provide a channel in conformance with Section
02532 – Sanitary Sewer Manholes.
4. Limit fracture and cracking of manhole.
5. If improperly tapped, repair or replace to the operating authority’s satisfaction at the Contractor’s expense.
3.07 CLEANOUTS/LAMP HOLES
A. Construct as shown on the standard details at the locations and elevations shown on the Drawings.
B. Concrete: Conform to Section 03300 – Cast-in-place Concrete (Non-
Structural).
C. Reinforcement: #4 rebar.
D. Provide a concrete support pad for the 45-degree bend and riser.
1. Pad to be the full width of the trench.
E. Rest the support riser on undisturbed earth.
F. Provide a 36-inch by 36-inch by 6-inch thick concrete pad for each cleanout/lamp hole.
1. Provide wood or other forms for concrete placement. 2. Cast-in-place a manhole frame and cover conforming to Section 02532 –
Sanitary Sewer Manholes.
3. Set top of pad to flush with paved surfaces.
4. Set top of pad 4 inches below finished grade of unpaved roads and driveways.
5. Set top of pad 6 inches above finished grade in undeveloped areas and
yards.
6. Provide a hard smooth finish to top of pad.
7. Remove forms after concrete has cured enough to retain its shape. 3.08 SEWER MAIN TESTING
A. General:
1. Furnish all materials, labor, and equipment to perform the required tests.
2. Perform all tests in the presence of the Engineer.
3. Repair all sections of sewer not passing the tests by method approved by the Engineer, at the Contractor’s cost.
4. Retest sewer until tests pass the requirements, at contractor’s expense.
B. Alignment
1. The Engineer will check alignment.
2. Lamp after the sewer line has been completely backfilled.
3. Reinstall sewer main out of alignment or grade, by more than 0.10 feet.
a. Reinstalled at the Contractor’s expense.
C. Deflection Test
1. Perform deflection tests on all flexible pipes (PVC) after the final backfill
has been in place for at least 30 days.
2. Test equipment: rigid ball or mandrel that is 95% (minimum) of the pipe inside diameter.
3. Manually pull the ball or mandrel through the pipe.
a. Mechanical pulling devices not allowed.
D. Infiltration Test
1. Test by a method approved by and in the presence of the Engineer.
2. Measure infiltration in all lines.
3. Maximum allowable infiltration is 10 gallons per day, per inch diameter of pipe, per mile of sewer line, under external pressure.
4. No visible leakage of gravity sewers or fittings is allowed
a. Correct all such leaks.
5. After a successful air test, either infiltration of groundwater in excess of the
specified maximum then the air test was in error or a pipelines failure has occurred.
a. Correct failures, which occur within the Warranty Period, at the
Contractor’s expense.
E. Air Test
1. All gravity sewers and appurtenances shall successfully pass a low-pressure air test prior to acceptance.
2. Preparation: Clean all sewer pipes before the test.
3. Testing Equipment:
a. Plugs: mechanical or pneumatic type. One shall have an inlet tap for
adding air to the sewer line.
b. Air Compressor
c. Main Shutoff Valve
d. Pressure Relief Valve: 9 psig relief
e. Input Pressure Gauge
f. Continuous Monitoring Pressure Gauge: Minimum divisions of 0.10 psi with an accuracy of +/- 0.04 psi.
4. Testing Procedure: Test according to the Time-Pressure Drop Method outlined in ASTM F 1417.
a. Plug all pipe outlets with test plugs capable of holding under the test
pressures.
b. Install plugs and brace as necessary to ensure that the plugs will not blow out when the main is under pressure.
c. Inspect sewer main pipe integrity in the area that will not be tested due to the plug, and report any possible defects to the Engineer.
d. Pressurize Pipe:
(1) Introduce air slowly until air pressure reaches 4.0 psig greater
than any backpressure resulting from groundwater over the pipe, where the pressure equals: psi + (0.43 psi X Depth of Groundwater over Pipe Invert in feet)
(2) Never exceed a pressure of 9.0 psig.
e. Do not enter manhole once pipe is pressurized.
f. Maintain pressure for at least two minutes.
g. Disconnect air supply after the initial two minutes have passed.
h. Adjust pressure to test pressure.
(1) Decrease air pressure to 3.5 psig greater than any pressure
resulting from groundwater over the pipe, where the test pressure equals: 3.5 psi + (0.43 psi X Depth of Groundwater over Pipe Invert in feet)
5. Determine elapsed time for the pressure to drop 1.0 psig and use Table 1,
or determine the elapsed time for the pressure to drop 0.5 psig from the test pressure and use Table 2.
TABLE 1: Minimum Specified Time Required for a 1.0 psig Pressure Drop
Pipe Dia. (in.)
Min. Time (min:s
ec)
100 Feet
150 Feet
200 Feet
250 Feet
300 Feet
350 Feet
400 Feet
Time for Longer Pipe
Lengths (Seconds)
4 3:46 3:46 3:46 3:46 3:46 3:46 3:46 3:46 .380*L
6 5:40 5:40 5:40 5:40 5:40 5:40 5:40 5:42 .854*L
8 7:34 7:34 7:34 7:34 7:34 7:36 8:52 10:08 1.520*L
10 9:26 9:26 9:26 9:26 9:53 11:52 13:51 15:49 2.374*L
12 11:20 11:20 11:20 11:24 14:15 17:05 19:56 22:47 3.418*L
15 14:10 14:10 14:10 17:48 22:15 26:42 31:09 35:36 5.342*L
18 17:00 17:00 19:13 25:38 32:03 38:27 44:52 51:16 7.692*L
TABLE 2: Minimum Specified Time Required for a 0.5 psig Pressure Drop
Pipe Min. 100 150 200 250 300 350 400 Time for Longer
Dia. (in.)
Time (min:s
ec)
Feet Feet Feet Feet Feet Feet Feet Pipe Lengths (Seconds)
4 1:53 1:53 1:53 1:53 1:53 1:53 1:53 1:53 .190*L
6 2:50 2:50 2:50 2:50 2:50 2:50 2:50 2:51 .427*L
8 3:47 3:47 3:47 3:47 3:47 3:48 4:26 5:04 .760*L
10 4:43 4:43 4:43 4:43 4:57 5:56 6:55 7:54 1.187*L
12 5:40 5:40 5:40 5:42 7:08 8:33 9:58 11:24
1.709*L
15 7:05 7:05 7:05 8:54 11:08
13:21
15:35
17:48
2.671*L
18 8:30 8:30 9:37 12:49 16:01
19:14
22:26
25:38
3.846*L
6. The test is a failure if:
a. The recorded time is less that the listed time for that pipe length and diameter for the pressure drop listed in the table.
7. Installed sewer service lines will not change the test time requirement.
8. In lieu of low-pressure air testing of the sewer system, the Engineer may
approve a hydrostatic exfiltration testing.
a. The Engineer will submit, in writing, the procedure, equipment, and basis of acceptance before testing starts.
b. The test will require, at a minimum:
(1) 2-foot test head.
(2) Maximum exfiltration rate less than 10 gallons per inch of pipe
diameter per mile per day. 3.09 SITE RESTORATION
A. Restore site to original condition.
B. Finish grade site in conformance with Section 02310 – Grading
C. Restore roadways in conformance with Section 02705 – Road Restoration.
D. Reseed the trench in conformance with Section 02920 – Top-soil, Seeding, Fertilizing, and Mulching.
3.10 RECORD DRAWINGS
A. Provide as-built information on each system in accordance with Section 01780
– Closeout Submittals.
END OF SECTION
SECTION 02532 SANITARY SEWER MANHOLES
PART 1 - GENERAL 1.01 SUMMARY
A. Work covered by this section includes standard and shallow concrete manholes, standard manholes, drop manholes, adjustment rings, frames and covers for community wastewater collection systems.
1.02 RELATED WORK
A. Section 01330 – Submittal Procedures B. Section 01770 – Closeout Procedures C. Section 01780 – Closeout Submittals D. Section 02310 - Grading E. Section 02315 – Excavation, Trenching and Backfill F. Section 02530 – Sanitary Sewer
1.03 REFERENCES
A. ASTM C 443 – Joints for Circular Concrete Sewer and Culvert Pipe, Using Rubber Gaskets
B. ASTM C 478 – Precast Reinforced Concrete Manhole Sections
C. ASTM C 923 – Resilient Connectors Between Reinforced Concrete Manhole
Structures and Pipes
D. ASTM C 990 – Joints for Concrete Pipe, Manholes, and Precast Box Sections Using Preformed Flexible Joint Sealants
E. Oklahoma Department of Environmental Quality 252-656-5 Sanitary Sewer
Standards
1.04 SUBMITTALS
A. Manhole frame and cover B. Manhole steps C. Precast manhole sections D. Joint sealing material E. Precast manhole base section F. Pipe to manhole connections
1.05 DEFINITIONS
A. Shallow Manhole
1. Manholes with a depth from rim to outlet pipe invert equal to 5-feet or less, and with a conical or flat top.
2. Additional Depth: distance from the outlet invert to the rim minus 5 feet.
B. Standard Manhole
1. Manholes with a depth from rim to outlet pipe invert equal to or greater than 7-feet, and with a conical top section.
2. Additional Depth: depth from the outlet invert to the rim minus 7 feet.
PART 2 - PRODUCTS 2.01 MANHOLES
A. Design and fabricate reinforced concrete manholes to conform to ASTM C 478.
B. Base Section:
1. Precast integral concrete bottom section and base.
C. Channel (or invert) shape:
1. Smooth 2. Semicircular 3. Same diameter as adjoining sewer pipe 4. Ogee shaped, so there is no free drop.
D. Drop:
1. Minimum: 0.10 feet through manholes measured from any invert in to the
invert out unless otherwise shown on the drawings.
2. Maximum: 2 feet through manholes measured from any invert in to the invert out.
E. Changes in Pipe Size or Grade: Make changes in size and grade of channels
gradually and evenly.
F. Changes in Direction: Smooth curve of as large a radius as the size of the manhole will permit with the intersection of the lines occurring at the center of the manhole.
G. Benches: Construct the manhole floor, outside of the channel, smooth and
slope toward the channel not less than 1-inch per 10 inches.
H. Barrel Sections:
1. 48-Inch inside diameter.
I. Cone Sections:
1. Eccentric Cone Sections
J. Top Slab Sections: 1. Provide manhole opening eccentrically located to allow positioning over
the outlet.
2. Manhole Steps:
a. Cast and anchor steps in concrete sections, aligned to form a continuous ladder.
b. Install steps so they are horizontal, protruding 5-inches, minimum.
c. Material: 1/2-inch steel steps encased in neoprene or polypropylene.
d. Width: 12-inches, minimum.
e. Space rungs 16-inches apart maximum.
f. Maximum spacing from the top of the cone to the first rung shall be 6-
inches.
g. Center steps over the manhole outlet.
K. Manhole Adjustment Rings:
1. Concrete rings.
L. Sewer Pipe Connection:
1. Watertight gasket precast into the manhole wall conforming to ASTM C 923.
2. Acceptable Products:
a. PSX Seal Gasket or approved equal.
b. A-Lok (Tullytown, Pennsylvania)
c. Kor-N-Seal (NPC, Incorporated, Milford, New Hampshire)
d. or approved equal.
M. Joints:
1. Conform to ASTM C 443.
2. Joint Sealant:
a. Conform to ASTM C 990.
b. Rub-R-Nek (Henry Group, Houston, Texas)
c. Con-Seal (Concrete Sealants, Incorporated, New Carlisle, Ohio)
d. or approved equal.
N. FRAMES AND COVERS
1. Fabricate from cast iron.
2. Clean and smooth. 3. Free from distortion, shrinkage or other defects
4. Combined Weight: 300 pounds, minimum.
5. Conform to detail drawings.
6. Frame:
a. Designed for use with covers without open pick holes
b. Machined, horizontal bearing surfaces
7. Cover:
a. Machined horizontal bearing surfaces.
b. Neoprene ring gasket
c. Non-rocking traffic cover
d. Solid cover with concealed pick hole
e. Top of Cover to say “Sanitary Sewer”
8. Materials
a. Neenah R-1550, Municipal Castings frame #301-7 and cover #301A
b. or approved equal with provisions to meet the specifications. PART 3 - EXECUTION 3.01 INSTALLATION
A. Construct manholes at the locations and elevations shown on the plans or as directed by the Engineer.
B. Refer to section 02315 – Excavation, Trenching and Backfill for excavation
and backfill requirements.
C. Install manholes so the walls are vertically plumb.
D. Bed precast manhole bases in a minimum of 8 inches of compacted clean sand or crushed rock.
E. Back fill with gravel or other native material not affected by frost.
F. Seal all lifting holes with quick set mortar.
3.02 CONSTRUCTION OF INVERT
A. PVC Pipe Invert Channel: 1. Install a full length of pipe through the manhole.
2. Form a concrete bench up to the spring-line of the pipe.
3. Slope the concrete bench toward the channel at 1-inch per 10 inches,
minimum.
4. Cut the top hemisphere of the pipe off for the entire length of the pipe through the manhole.
B. Formed Concrete Channel: 1. Form a channel that meets the requirements outlined in 2.01 B.
2. Ensure that the channel is smooth and free of rough patches.
3. Connection of Sewer Main Pipe:
a. Install sanitary sewer main according to pipe to manhole gasket
manufacturer’s recommendations.
3.03 OUTSIDE DROP CONSTRUCTION
A. Install an outside manhole drop where the invert of the inlet pipe is more than 24 inches higher than the invert of the outlet pipe.
B. Use the same material used for the sewer main pipe to construct the drop.
C. Encase entire outside drop in concrete.
D. Construct according to the detail drawings.
3.04 TOP SLAB SECTION INSTALLATION
A. Install with the opening over the outlet of the manhole.
B. Use on shallow manholes if required.
3.05 ECCENTRIC CONICAL SECTION INSTALLATION A. Install with the opening over the outlet of the manhole.
B. Install manhole section with cylindrical configuration before installing a conical
section.
C. Use on standard manholes and shallow manholes greater than 4 feet in depth.
3.06 JOINT SEALANTS
A. Install joint sealants around entire circumference of each manhole joint.
B. Place sealant on the lower horizontal surface of the joint.
C. Ensure that a watertight seal is provided at the joint.
D. Grout joints on outside and inside.
3.07 ADJUSTMENT RINGS
A. Required when the cover is set at or below with final grade. B. Group adjustment rings in place when the manhole is constructed.
C. Install at least one adjustment ring, and no more than 12-inches of adjustment
rings.
D. Discard all cracked adjustment rings.
E. Grout manhole rings on outside and inside. 3.08 FRAME AND COVER
A. If a road finish grade exists, set manhole frames and covers to the finish grade
of the road.
B. If plans indicate rim elevations, set manhole frames and covers to the elevation indicated on the plans and adjust the elevation of the frame and cover to meet field requirements as determined by the Engineer.
C. Refer to Section 02310 – Grading for finish grading requirements.
3.09 TESTING
A. Exfiltration Testing
1. Inspect for visible leakage or seepage.
2. Plug inlet and outlet piping.
3. Plug lift holes
4. Fill manhole with clean water to top of casting.
5. Allow 4 hours (minimum) for concrete to absorb water.
6. Refill manhole to top of casing. 7. Allowable leakage: 1.25 inches per hour.
8. Length of test: 2 hours minimum.
9. Repair all leakage or seepage that appears during the Warranty period in
a Engineer approved method.
B. Vacuum Testing
1. Inspect for visible leakage or seepage.
2. Plug inlet and outlet piping.
3. Plug lift holes.
4. Place test head at the top of the manhole in accordance with the manufacturer’s recommendations.
5. Draw a vacuum of 10 inches of Hg (mercury).
6. Shut valve on the vacuum line of the test head and shut off the vacuum
pump.
7. Record the time it takes for the vacuum pressure to drop from 10 inches to 9 inches of Hg.
8. If the time recorded exceeds the values of table 1, the manhole passed
the test.
Depth (ft)
Inside Diameter (in)
30 33 36 42 48 54 60 66 72
Time (sec)
8 11 12 14 17 20 23 26 29 33
10 14 15 18 21 25 29 33 36 41
12 17 18 21 25 30 35 39 43 49
14 20 21 25 30 35 41 46 51 57
16 22 24 29 34 40 46 52 58 67
18 25 27 32 38 45 52 59 65 73
20 28 30 35 42 50 53 65 72 81
22 31 33 39 46 55 64 72 79 89
24 33 36 42 51 59 68 78 87 97
26 36 39 46 55 64 75 85 94 105
28 39 42 49 59 69 81 91 101 113
30 42 45 53 63 74 87 98 108 121
9. Repair all leakage or seepage that appears during the Warranty period by
a Engineer approved method.
3.10 SITE RESTORATION
C. Restore site to original condition.
D. Finish grade site in conformance with Section 02310 – Grading
3.11 RECORD DRAWINGS
E. Provide as-built information on each system in accordance with Section 01780.
END OF SECTION
SECTION 02534
SUBMERSIBLE GRINDER PUMPING SYSTEM
PART 1 - GENERAL
1.01 SCOPE OF WORK
A. Contractor shall provide a complete submersible pumping system. The
system shall be a complete, fully integrated process system provided by a
single Coordinating Supplier who shall furnish all labor, equipment,
materials, and incidentals required and shall supervise the installation,
start-up, and testing using qualified technicians and other specialists. The
supplier shall coordinate the equipment requirements with the mechanical
and electrical requirements of the Contract Documents, shall integrate the
equipment furnished with the requirements shown on the electrical
drawings, and provide complete installation and interconnection drawings
and diagrams required for installation, start-up, testing and adjustment.
B. The pumping system for the lift station shall consist of two (2)
submersible grinder pumps, the electrical components, check valves, plug
valves, access hatch covers, and a level control system as shown on the
Contract plans.
1.02 DELIVERY, STORAGE, HANDLING
A. Individual equipment components shall be crated in structurally adequate
packing containers to prevent damage during shipping, facilitate ease of
handling and to provide suitable protection from weather for extended
storage at the jobsite prior to installation. Packing containers shall be
permanently labeled with appropriate equipment identification, shipping
address and return address. Packing list shall be provided with equipment
at time of delivery.
B. Electrical equipment shall be kept thoroughly dry at all times and shall be
stored indoors. Equipment storage shall be protected and maintained in
accordance with the manufacturer's recommendations. Equipment shall
not be stored directly on the ground.
C. Contractor shall utilize equipment and tools of adequate size suitable for
unloading, transporting, storing and supporting the equipment during
installation. Caution shall be employed to prevent equipment damage
resulting from abrupt contact with other materials or equipment.
1.03 QUALITY ASSURANCE
A. The Contractor's attention is directed to the fact that the Submersible
Pumping System is an integrated system which shall be furnished, factory
assembled and integrated by one manufacturer or supplier who shall
provide all of the equipment and appurtenances regardless of the
manufacturer of the various components all under the Submersible
Pumping System pay items. Substitution of functions specified will be
subject to approval of the Engineer.
B. The materials or equipment so specified have been selected as being
suitable for the service anticipated and will be regarded as standard. The
Contractor should prepare his bid on the basis of the particular equipment
and materials specified. The awarding of the contract will constitute a
contractual obligation on the part of the Contractor to furnish the specified
equipment and materials.
C. Pump Substitutions: In order to allow sufficient time for the Engineer to
evaluate the type and quality of equipment being offered by the
manufacturers or coordinating supplier not specified, the latter shall submit
fifteen (15) days prior to the date set for the opening of bids on this
project, the following descriptive literature and drawings for all equipment
being offered under this item. Failure to provide a complete system and
equipment description may result in non-acceptance of the equipment
manufacturer if a bidder proposes this alternate equipment with their bid:
1. Specifications and drawings showing the dimensions and detailed
description of the equipment offered.
2. General installation, piping and wiring details and arrangements for
instruments and accessories.
3. Cost deduct to use the substitution over the specified equipment.
The manufacturer or supplier submitting equipment to be considered as a
substitution shall pay the Engineer for his/her time to review the
information. Engineering fees and required time to review shall be
determined by the reviewing Engineer.
Equipment substitutions that have been deemed acceptable will be listed
by addendum no later than five (5) days before the bid date.
E. The entire System shall be designed, coordinated and supplied by a
company regularly engaged in the business of designing and fabricating
pumping systems for a minimum of fifteen (15) years. Acceptable pump
manufacturers are Hydromatic Pump as provided by Haynes Equipment
Company, Oklahoma City, Oklahoma.
1.04 WARRANTY
A. The manufacturer shall warrant the equipment to be of quality
construction, free from defects in materials and workmanship. The
warranty shall become effective upon acceptance by the Owner or
Owner's authorized agent, or six (6) months after date of shipment,
whichever occurs first.
B. The equipment, apparatus, and parts furnished shall be warranted for a
period of one (1) year, excepting only those items that are normally
consumed in service, such as oil, grease, packing gaskets, O-rings, etc.
The manufacturer shall be solely responsible for the warranty of the
equipment and all components.
C. Upon request from the Engineer and/or the Owner, the manufacturer shall
demonstrate proof of financial responsibility with respect to performance
and delivery date. In addition, the manufacturer shall provide proof of
evidence of facilities, equipment, and skills required to produce the
equipment specified herein and provide technical service and replacement
parts.
D. Components failing to perform as specified by the Engineer, or as
represented by the manufacturer, or proven defective in service during the
warranty period, shall be replaced, repaired, or satisfactorily modified by
the manufacturer without cost of parts or labor to the Owner.
PART 2 - PRODUCTS
2.01 SUBMERSIBLE PUMPS
A. GENERAL
Furnish and install a quantity of two (2) pull-up submersible grinder pumping units. The pumps shall be clockwise rotation and constructed to automatically connect to the discharge piping when lowered into place.
B. CONDITIONS OF OPERATION
Each pump shall be capable of providing the following hydraulic
conditions when pumping domestic sewage:
Pump Hydromatic HPGH
Capacity 50 GPM
Total Dynamic Head 30 Ft.
Motor HP 3 HP
Maximum Speed 3450 RPM
C. The pump volute, motor and seal housing shall be high quality gray cast iron, ASTM A-48, Class 30. The pump discharge shall be fitted with a 3" standard ASA 125 lb. flange, faced and drilled. All external mating parts shall be machined and Nitrile O-ring sealed on a beveled edge. Gaskets shall not be acceptable. All fasteners exposed to the pumped liquids shall be 300 series stainless steel.
2.02 ELECTRICAL POWER CORD
A. Electrical power cord shall be SOOW, W, or GGC, water resistant 600V, 90°C, UL and CSA approved and applied dependent on amp draw for size.
B. The power cable entry into the cord cap assembly shall first be made with a compression fitting. Each individual lead shall be stripped down to bare wire at staggered intervals, and each strand shall be individually separated. This area of the cord cap shall then be filled with an epoxy compound potting which will prevent water contamination to gain entry even in the event of wicking or capillary action.
C. The power cord leads shall then be connected to the motor leads with extra heavy connectors with a screwed wire-to-wire connection.
2.03 MOTOR
A. The stator, rotor and bearings shall be mounted in a sealed submersible type housing. The stator windings shall have Class F insulation (155°C or 311°F) or Class H insulation (180°C or 356°F) and a dielectric oil-filled motor, NEMA B design.
B. The pump and motor shall be specifically designed so that they may be operated partially or completely submerged in the liquid being pumped.
C. Stators shall be securely held in place with a removable end ring and threaded fasteners so they may be easily removed. No special tools shall be required for pump and motor disassembly.
D. Pump shall be equipped with heat sensors. The heat sensor shall be a low resistance, bi-metal disc that is temperature sensitive. It shall be mounted directly on the stator windings and sized to open at 120°C and automatically reset at 30–35°C differential. The sensors shall be connected in series with motor starter coil so that the starter is tripped if a heat sensor opens. The motor starter shall be equipped with overload heaters so all normal overloads are protected by an external heater block.
2.04 BEARINGS AND SHAFT
A. An upper radial bearing and a lower thrust bearing shall be required. These shall be lubricated by the dielectric oil that fills the motor housing.
B. The shaft shall be machined from a solid 416 series stainless steel forging and be a design that is of large diameter with minimum overhang to reduce shaft deflection and prolong bearing life.
2.05 SEALS
A. The rotor and stator in the motor housing shall be separated and protected from the pumped liquid by an oil-filled seal housing incorporating two type 21 carbon ceramic mechanical seals mounted in tandem. This seal housing shall be equipped with two moisture sensing probes installed between the seals, and the sensing of moisture in the seal chamber shall be automatic, continuous, and not require the pump be stopped or removed from the wetwell.
2.06 IMPELLER
A. Impeller shall be brass multivane, semi-open, non-overloading design. They can either be factory or field trimmed to meet specific performance conditions. Impellers shall be dynamically balanced at the factory and machined for threading on to the pump shaft.
2.07 GRINDER CUTTERS
A. The combination centrifugal pump impeller and grinder unit shall be attached to the common motor and pump shaft made of 416SS. The grinder unit shall be on the suction side of the pump impeller and discharge directly into the impeller inlet, leaving no exposed shaft to permit packing of ground solids. The grinder shall consist of two stages. The cutting action of the second stage shall be perpendicular to the plane of the first cut for better control of the particle size.The grinder shall be capable of grinding normal domestic sewage. Both stationary and rotating cutters shall be made of 440C stainless steel hardened to Rockwell 60C and ground to close tolerance.
B. The upper(axial) cutter and stationary cutter ring shall be reversible to provide new cutting edges to double life. The stationary cutter ring shall be a slip fit into the suction opening of the volute and held in place by three (3) 300 series stainless steel screws and a retaining ring. The lower(radial) cutter shall macerate the solids against the I.D. of the cutter ring and extrude them through the slots of the cutter ring. The upper(axial) cutter shall cut off the
extrusions, as they emerge from the slots of the cutter ring to eliminate any roping effect that may occur in single stage cutting action. The upper(axial) cutter shall fit over the hub of the impeller and the lower(radial) cutter shall be slip fit and secured by means of peg and hole and rotate simultaneously with the rotation of the shaft and impeller. The grinding mechanism shall be locked to the shaft by a 300 series stainless steel countersunk washer in conjunction with a 300 series stainless steel flat head cap screw threaded into the end of the shaft.
2.08 CONTROLS
A. Electrical power to be furnished to the site will be 1 phase, 60 Hertz, 230
volts.
B. The control circuitry shall be designed to operate on 115 +/-10% volts, 60
Hertz, single phase current, and shall control pumps driven by 3 HP
motors at 3450 RPM. The control panel shall consist of circuit breaker
and controls for each pump motor actuated by a liquid level control system
with all components mounted in one common enclosure. The control
assembly shall provide means to operate each pump manually or
automatically. When operated in the automatic mode, the control
assembly shall provide means to automatically alternate the position to the
"lead", "lag" and spare pumps after each pumping cycle.
C. The pump station controls shall conform to third party safety certification.
The panel shall bear a serialized UL label listed for “Enclosed Industrial
Control Panels”. The enclosure, and all components shall be mounted on
the sub-panel or control cover shall conform to UL descriptions and
procedures.
D. PANEL ENCLOSURE
1. The complete control assembly shall be contained in one NEMA 4
stainless steel enclosure.
2. All seams shall be free of burrs and free of open voids to prevent
leakage. The enclosure shall be constructed in conformance with
applicable sections of the National Electrical Manufacturer's
Association (NEMA). Enclosure construction to be NEMA 3 per
NEMA Standard ICS-1970, Paragraph ICS1-110.12.
3. The enclosure shall be equipped with a removable inner swing
panel fabricated of steel, mounted on lift off hinges. The inner
swing panel shall be of adequate size to completely cover all wiring
and components mounted on the back panel and shall make
provision for the mounting of all basic and optional controls and
instruments. The inner swing panel shall have a minimum
horizontal swing of 90o and shall be held in the closed position with
straight slot screws.
4. The door shall be mounted on a continuous (piano-type), vertical,
steel hinge, sealed around its entire perimeter and held in the
closed position with a three padlockable draw pull latches. The
door shall have a minimum horizontal swing of 165o.
5. The enclosure shall be furnished with a removable back panel
fabricated of steel, secured to the enclosure on collar studs. The
back panel shall be of adequate size to accommodate all basic and
optional components.
6. There shall be no holes in the enclosure for mounting the enclosure
or mounting within the enclosure.
7. All control wiring shall conform to the National Electric Code. Wires
connected to components mounted on the enclosure door shall be
bundled and tied in accordance with good commercial practice.
Bundles shall be made flexible at the hinged side of the enclosure.
Adequate length and flex shall be provided to allow the door to
swing to its full open position without undue stress or abrasion on
the wire or insulation. Bundles shall be held in place on each side
of the hinge by mechanical fastening devices.
8. The motor control shall be completely wired at the factory, except
for the power feeder lines, in accordance with applicable wiring
standards set forth by the National Electric Code (NEC).
9. All components shall be electrically grounded to a common ground
lug mounted on the control panel sub plate. Upon installation of lift
station, and before connection of any power feeder lines, contractor
shall extend grounding wire from lug to external ground in
accordance with local electrical code.
E. COMPONENTS
1. All motor branch circuit breakers, and control relays shall be
securely fastened to the removable back panel with screws.
Properly sized NEMA rated Square-D Class 8536 motor contactors
shall be provided.
2. A properly sized thermal-magnetic air circuit breaker shall be furnished for each submersible pump motor, and shall have a symmetrical rms interrupting rating of 14,000 amperes at 460 volts. All circuit breakers shall be sealed by the manufacturer after calibration to prevent tampering. A mechanical disconnect mechanism shall be installed on each circuit breaker to provide a means of disconnecting power to the pump motors. Operator handles for the disconnect mechanisms shall be located on the exterior of the inner swing panel with interlocks which permit the swing panel to be opened only when the circuit breakers are in the "OFF" position.
3. A padlocking operating mechanism shall be installed on each motor
circuit breaker. Operator handles for the mechanism shall be
located on the exterior of the control compartment door, with
interlocks which permit the door to be opened only when the circuit
breakers are in the "off" position.
4. A switch shall be provided to permit the station operator to select
automatic alternation of the pumps, to select pump number one to
be the lead pump for each pumping cycle or to select pump number
two to be the lead pump for each pumping cycle. Selector switch
shall be standard duty, rated NEMA 4X, with contacts rated NEMA
A600 minimum.
5. Pump mode selector switches shall be connected to permit manual
start and manual stop for each pump individually, and to select
automatic operation of each pump under control of the liquid level
control system. Manual operation shall override the liquid level
control system. Selector switch shall be standard duty, rated
NEMA 4X, with contacts rated NEMA A600 minimum.
6. A pump alternation shall be provided by either the use of
electrical/mechanical relay or a PLC. Pump alternator shall operate
after pump shutdown.
7. Control panel shall be equipped with 24 VDC LED pilot light for
each pump motor. Light shall be wired in parallel with the related
pump motor starter to indicate that the motor is on.
8. The pump control panel shall be equipped to terminate pump
operation due to high motor winding temperature or moisture in the
motor housing and shall utilize the contacts in the pump motor. If
either event should occur, the motor starter will drop out and a
mechanical indicator, visible on the inner door, shall indicate the
pump motor has been shutdown. The pump motor shall remain
locked out until the condition has been corrected and manually
reset. Control panel shall be equipped with one 24 VDC LED pilot
light for each pump motor to indicate a pump fail condition.
9. The motor control center shall be equipped with a duplex grounding
receptacle located on the exterior of the enclosure in weatherproof
box. The receptacle circuit shall be protected by a 15 ampere
thermal magnetic circuit breaker.
10. Lift station manufacturer shall furnish 115 Volt, A.C. 40-watt, vapor-
tight alarm light with red globe, guard and mounting hardware. The
contractor shall mount, wire and run conduit to the light as shown
on the plans. Wiring shall be connected to the appropriate terminal
blocks in the motor control center as shown on the lift station wiring
schematic.
11. The control panel shall be equipped to monitor the incoming power
and shut down the pump when required to protect the motors from
damage caused by phase reversal, phase loss, voltage unbalance
greater than 5% or voltage less than 83% of nominal. A time delay
shall be provided to minimize nuisance trips. The motors shall
automatically restart when power conditions return to normal.
Control panel shall be equipped with a 24 VDC LED pilot light to
indicate power failure.
12. The control circuit shall contain a pump delay circuit to prevent both
pumps from simultaneous starting following a power failure.
13. An adequately sized control transformer in enclosure suitable for
mounting outdoors shall be provided to provide single phase 115
volt power for the pump controls, duplex receptacle, and telemetry
system. The primary side of the transformer shall be protected by a
thermal magnetic air circuit breaker, specifically sized to meet the
power requirements of the transformer. A mechanical operating
mechanism shall be installed on the circuit breaker to provide a
means of disconnecting power to the transformer. The operating
handle for the mechanism shall be located on the swing door of the
control panel, with interlocks which permit the swing door to be
opened only when the circuit breaker is in the “OFF” position.
14. A 120 Volt AC alarm horn in a weatherproof enclosure shall be
provided for remote mounting. The horn shall have a sound output
of not less than 85 decibels at ten feet. A push to silence button
shall also be provided.
15. An alarm silence switch and relay shall be provided to permit
maintenance personnel to de-energize the external alarm device
while corrective actions are underway. After silencing the alarm
device, manual reset of the signal relay shall provide automatic
reset of the alarm silence relay.
16. There shall be furnished a self-contained completely automatic
monitoring and alarm telephone dialing system.
a. The system shall be capable of monitoring up to four (4)
independent alarm conditions in addition to power failure. The existence of
an alarm condition shall be indicated by a set of normally closed dry
contacts. The system shall be capable of multiple fault reporting in one
call. Connection into the telephone line shall be through a self-contained
FCC approved coupler and shall plug into a standard modular jack
supplied with the regular private party telephone line.
b. The dialer shall, upon the opening of any one of the alarm points,
make the telephone lines accessible, wait for a dial tone and begin to dial
the first of four (4) field programmed telephone numbers, each to be a
maximum of thirty-two (32) digits in length.
c. Telephone numbers shall be programmed into the dialer by means
of a keyboard. It shall not be necessary to remove the system of operation
to alter or insert new telephone numbers.The voice message shall be
electronically synthesized with no mechanical reproduction elements. It
shall not be necessary for the user to program any speech. The system
shall contain its own vocabulary, in any language, sufficient to clearly
advise personnel of station I.D. number and presence of alarm condition.
e. After dialing one of four (4) telephone numbers, the system shall
deliver a voice message indicating a station number and fault condition at
that station. In order to eliminate calls due to nuisance switch closures or
power dims, there shall be furnished an adjustable time delay from
appearance of fault condition and the initiation of alarm calling. The time
delay shall be adjustable from one (1) to forty (40) seconds. The message
shall be repeated six (6) times with a sufficient space between messages
to allow the called individual to acknowledge receipt of the call.
Acknowledgement of the message shall be accomplished by pressing a
Touch Tone key on the telephone between message transmissions or by
calling the system back within 70 seconds of the last message.
f. Following an acknowledgement, the system shall vocalize a signoff
and hang up. The system shall then enter a time delay to allow adequate
time for follow-up measures to be taken. This delay shall be user
programmable from one (1) to ninety-nine (99) hours.
g. If during the delay, another fault occurs, the system shall begin re-
calling. Additionally, the system can be called at any time, from any
standard telephone, whereupon it will answer the call and deliver a
vocalized message indicating the station number and fault status of the
location. The dialer shall allow the user to program the number of
telephone rings before answering (either before two (2) rings or after ten
(10) rings).
h. If the delay elapses and faults still exist, the system shall begin
dialing again at one (1) minute intervals attempting to deliver the fault
message.
i. If no acknowledgment is received, the system shall hang up, wait
sixty (60) seconds for network clear down, and call the next priority
telephone number. After dialing the last priority number, the system shall,
if necessary, return to the first priority telephone number and repeat the
sequence indefinitely.
j. The dialer shall be provided with continuously float charged
batteries for four (4) hours standby operation in the event of power outage.
A "low battery power" LED light shall be provided on the face of the panel.
k. The system shall operate over the temperature range of +32
degrees Fahrenheit to +120 degrees Fahrenheit.
l. The system shall operate from 120 Volts AC plus or minus 10%.
The supplier shall provide a power line surge protector, and a telephone
line isolator and surge protection.
F. LEVEL CONTROL SYSTEM
1. The level control system shall start and stop the pump motors in
response to changes in wet well levels, as set forth herein.
2. The level control system shall be the mercury float switch type,
incorporating floats secured to a vertical pipe in the wet well.
Rising and falling liquid level in the wet well causes switches within
the floats to open and close, providing start and stop signals for the
level control components.
3. The level control system shall start the motors for one pump when
the liquid level in the wet well rises to the "lead pump start level".
When the liquid is lowered to the "pump stop level", the system
shall stop this pump. These actions shall constitute one pumping
cycle. Should the wet well level rise to the "lag pump start level",
the system shall start the second pump so that both pumps are
operating to pump down the well. Both pumps shall stop at the
same "stop" level. Should either the lead or lag pump or both fail to
start, the spare pump shall be started and operate on the float
control system.
4. The level control system shall utilize the pump alternator to select
first one pump, then the second pump, then the third pump, to run
as lead pump for a pumping cycle. Alternation shall occur at the
end of a pumping cycle.
5. Pump station manufacturer shall furnish four (4) float switch
assemblies for installation by the contractor. Each switch shall
contain a mercury-type switch sealed in a polypropylene housing,
and with sufficient length of cable, but not less than 20 feet of
cable.
6. Pump station manufacturer shall furnish a separate float switch
assembly, signal relay, for high water alarm function. Should the
wet well level rise to the high water alarm level, the float switch
assembly and relay shall energize the signal relay. The signal relay
shall complete a 115-volt AC circuit for an external alarm device. A
standard duty, NEMA 4X pilot light mounted in the control panel
shall indicate that a high wet well level exists.
2.09 VALVES
A. Plug valves shall be DeZurik type PEC or equal with handwheel actuator
per the sizes shown on the project plans.
B. Swing check valves shall be DeZurik APCO type CVS lever and weight or
equal per the sizes shown on the project plans.
2.10 HATCHES
A. The single leaf series access frames and covers as manufactured by
Halliday Products, Inc. of Orlando, Florida shall have a 1/4" (7mm) thick
one-piece, mill finish, extruded aluminum frame, incorporating a
continuous concrete anchor. Door panels shall be 1/4 inch (7mm)
aluminum diamond plate, reinforced to withstand a live load of 300 lbs. psf
(1464 kg. psm), Uniform live load. Doors shall open to 90 degrees and
automatically lock with T-316 stainless steel hold open arms with
aluminum release handles. Doors shall close flush with the frame. Hinges
and all fastening hardware shall be T-316 stainless steel. Unit shall lock
with a non-corrosive locking bar and have a non-corrosive handle. Unit
shall carry a lifetime guarantee against defects in material and/or
workmanship.
PART 3 EXECUTION
3.01 GENERAL
A. The general contractor shall assume full responsibility for coordination of
the entire project, including verification all structures, piping, coating
systems and equipment components are compatible. The general
contractor shall initially operate each equipment system, and shall make
all necessary adjustments so that each system is placed in proper
operating condition.
B. Equipment and materials utilized for this project must be approved by the
Engineer prior to installation. Approval for installation or incorporation in
this project will be made only after submittal or manufacturer's shop and
installation drawings, test results or other data as specified herein.
C. Installation of equipment shall be in full conformance with the
manufacturer's shop drawings and requirements as approved by the
Engineer. Wherever a conflict arises between manufacturer's instructions
and the contract documents, the contractor shall follow the Engineer's
decision at no additional cost to the Owner.
3.02 WORKMANSHIP
A. Handle carefully and protect the equipment and appurtenances to avoid
damage.
B. The equipment shall be safely secured to the wall and floor in accordance
with the Engineer's design drawings. All plumbing and electrical shall be
in accordance with state and federal codes to ensure proper operation of
the pumping system, as-well-as the safety of plant personnel. All piping
and tubing shall be sealed for leaks.
C. Any evidence of improper installation shall be corrected by the Contractor.
Care during storage, installation and startup shall be in strict accordance
with manufacturer's recommendations.
3.03 MANUFACTURER'S SERVICES
A. The Contractor shall require the manufacturer to furnish the services of a
qualified field engineer to perform the following functions in the designed
periods of time. These services are to be performed at the jobsite.
1. Check-out of installation, start-up of equipment and initial operator
instruction. This service shall take place after all mechanical
equipment associated with the control system is installed and
mechanically operable.
2. After equipment is fully operational, and before Owner will assume
responsibility for the operation of the equipment, the equipment
manufacturer's representative shall instruct the Owner's operating
personnel in the care, maintenance and proper operation of the
equipment.
B. Field Test
1. Prior to equipment startup, all equipment described herein shall be
inspected for quiet operation, proper connections, and satisfactory
performance by means of a functional test.
2. The pump and motor assembly shall be field tested to verify
vibration is not in excess of the limits stated in the latest revision of
Hydraulic Institute and NEMA MG 1.
3. The pump, motor, and controls shall be given an operational test in
accordance with the standards of the Hydraulic Institute.
Recordings of the test shall substantiate the correct performance of
the equipment at the design head, capacity, speed and horsepower
as specified herein.
4. Units apparently failing to meet the Specifications to the satisfaction
of the Engineer must be more accurately tested in accordance with
Hydraulic Institute Standards. If the pump fails the second test, the
unit will be rejected, and the Contractor shall furnish a unit that will
perform as specified.
C. Operation and Maintenance Materials
1. The pump manufacturer shall be responsible for supplying written
instruction, which shall be sufficiently comprehensive to enable the
operator to operate and maintain the pump and all equipment
supplied by the manufacturer. Instructions shall assume that the
operator is familiar with pumps, motors, piping, valves, and
controls, but that he has not previously operated and/or maintained
the exact equipment supplied.
2. The instruction shall be prepared as a system manual applicable
solely to the pump and equipment supplied by the manufacturer to
these specifications, and shall include those devices and
equipment supplied by him.
3. Operation and maintenance instruction shall be specific to the
equipment supplied in accordance with these specifications.
Instruction manuals applicable to many different configurations and
pumps, and which require the operator to selectively read portions
of the instructions shall not be acceptable.
D. All costs for the above manufacturer functions including travel, lodging,
meals, and incidentals shall be considered to have been included in the
Contractor's lump sum bid price.
END OF SECTION
SECTION 02823 CHAINLINK FENCE
PART 1 - GENERAL
1.01 SUMMARY
A. Section Includes
1. Chainlink fence, gate, and related incidental work.
1.02 RELATED WORK
A. Section 01330 – Submittal Procedure B. Section 01780 – Closeout Procedures C. Section 01780 – Closeout Submittals D. Section 02310 – Grading E. Section 03300 – Cast-In-Place Concrete (Non-Structural)
1.03 REFERENCES
A. ASTM A 392-96 Specification for Zinc Coated Chain-Link Fence Fabric B. ASTM F626-96 Specification for Fence Fittings
1.04 SUBMITTALS
A. Conform to Section 01330 – Submittal Procedure B. Line posts C. End posts D. Corner posts E. Slope posts F. Gate posts G. Top rail H. Brace I. Tension bar J. Barb arms K. Fence fabric L. Barbed wire M. Hinges N. Latch
PART 2 - PRODUCTS 2.01 POSTS
A. Hot dip galvanized. B. Conform to ANSI C80.3
C. Line Posts: 2.5 inches O.D., 3.65 lbs/ft D. End, Corner, and Slope Posts: 3-inch O.D., 5.79 lbs/ft E. Gate Post: 4-inch O.D., 9.11 lbs/ft F. Top Rail and Brace: 1.625-inch O.D., 2.27 lbs/ft
2.02 Tension Bar: Hot dipped galvanized flat bar, 3/16 by 3/4 inches 2.03 Barb Arms: Hot dipped galvanized 2.04 FENCE FABRIC
A. 9 gauge galvanized steel. B. Height: 72 inches. C. Bottom wires: 7-gauge spring steel. D. Truss rods: 3/8-inch galvanized steel.
2.05 GATE
A. 6-foot high by 20-foot wide gate double hung. B. Frame: Steel tubing, square welded.
1. Hot galvanized. 2. Conform to ANSI C80.3 3. Outer Frame
a. 1 ½ -inch nominal diameter. b. Wall thickness: 0.065-inch.
4. Center brace a. 1-inch nominal b. Wall thickness: 0.057-inch
c. Allied Tube and Conduit, EMT d. Or approved equal
C. Hinges: bolt type. D. Locking latch: Provide ½-inch thick link chain and heavy-duty padlock.
1. Provide two padlock keys. 2. Key the lock to match all other padlocks provided.
2.06 WIRE
A. Barbed wire 1. Gauge: No. 12 ½. 2. Three strand. 3. Galvanized steel wire. 4. Galvanized steel barbs: 4 point.
PART 3 - EXECUTION
3.01 PREPARATION
A. Clear fence line of obstructions and brush. B. Grade the ground surface to remove irregularities and provide uniform
distance between ground and bottom of fence.
1. Distance: 2 inches + ½-inch. 2. Conform to Section 02310 – Grading.
3.02 POSTS
A. Excavate post-holes to diameter, depth, and spacing shown on the Project Drawings. 1. Remove all loose soil from post-holes.
B. Set posts plumb and true to line.
C. Place concrete to the depth shown on the Project Drawings.
1. Conform to Section 03300 – Cast-In-Place Concrete (Non-Structural).
D. Allow 24 hours curing time before top rails, tensioning wires, and fence fabric are installed.
E. Cap all posts
3.03 TOP RAIL
1. Place as shown on the Project Drawings.
3.04 FENCE FABRIC
A. Use a mechanical stretcher to achieve the manufacturer’s recommended tension.
B. Location and method of splicing to be approved in advance by Engineer. C. Attach fence fabric on outside surface of posts.
3.05 BARB WIRE
A. Use a mechanical stretcher to achieve the manufacturer’s recommended tension.
B. Location and method of splicing to be approved in advance by Engineer 3.06 GATE
A. Weld all joints and connections. B. Attach fence fabric using 12.5 gauge (minimum) galvanized tie wire,
galvanized steel straps, or tack weld to the gate frame.
1. Tie, strap, or tack every 6 inches to the frame and center support. 2. Attach barbwire by a method approved by the Engineer.
C. Install hinges and latch as recommended by the manufacturer.
1. Provide 3 hinges; invert the center hinge so that gate cannot be lifted of
the hinges without removing the center hinge.
D. Provide heavy-duty padlock and keys to Owner.
3.07 BRACE POST ASSEMBLY (if required)
A. Install at locations shown on the Project Drawings. 3.08 SIGNS (if required)
A. Install warning one warning sign at the center of each side of fence. 3.09 RECORD DRAWINGS
A. Provide as-built information in accordance with Section 01780 – Closeout Submittals.
END OF SECTION
SECTION 02920
TOPSOILING, SEEDING, FERTILIZING, AND MULCHING
PART 1 - GENERAL
1.01 SUMMARY
A. This section includes topsoiling, seeding, fertilizing, and mulching areas disturbed by construction activities.
1.02 RELATED WORK
A. Section 02310 – Grading B. Section 02315 – Excavation, Trenching, and Backfill
1.03 REFERENCES
A. U.S. Department of Agriculture Rules and Regulations under the Federal Seed Act.
1.04 SUBMITTALS
A. Conform to the Section 01330 – Submittal Procedure. B. Seed Mixture C. Fertilizer
PART 2 - PRODUCTS
2.01 TOPSOIL
A. Natural loam, sandy loam, silt loam, silty clay loam, or clay loam humus-bearing soils adapted to the sustenance of plant life.
B. Use previously stockpiled topsoil.
2.02 FERTILIZER
A. 20-10-10 mixture of 20% Nitrogen, 10% Phosphorous, and 10% Pot Ash. 2.03 SEED MIXTURE
A. April through June: Bermuda grass seed. B. July through March: blend of Kentucky 31, Fescue, and annual rye grass.
2.04 MULCHING MATERIAL
Prairie (native) hay, not more than 2 years old and free of noxious weeds.
PART 3 - EXECUTION
3.01 TOPSOIL
A. Place a minimum of 4 inches of topsoil over area to be seeded.
3.02 FERTILIZING
A. Apply using mechanical equipment.
B. Uniformly distribute.
C. Incorporate into soil using harrow or other suitable equipment.
D. Conform to recommendations of local county extension agent.
E. Fertilize the area at an application rate of 200 pounds per acre. 3.03 SEEDING
A. Sow seed using either equipment suited to that purpose or scatter seed uniformly over area with hand seeders when the weather is sufficiently quiet to prevent seeds from blowing away.
B. Plant when soil temperature is 60o F or greater.
C. Application rate
1. 200 pounds per acre of the Kentucky 31, fescue and rye grass, 100
pounds per acre of the Bermuda seed.
D. Lightly rake soil to cover the seed with approximately ¼-inch of soil.
3.04 MULCHING
A. Place hay mulching on seeded area loose enough to allow some sunlight to penetrate and air to circulate but thick enough to shade the ground, conserve soil moisture, and prevent/reduce erosion.
B. Do not perform mulching activities during periods of excessively high winds,
which would preclude the proper placing of the mulch.
C. Apply straw or hay uniformly over the disturbed area to a loose depth of ½ to 1½ inches using 2 to 2 ½ tons of mulch per acre.
D. Immediately after spreading, anchor mulch using a mulch tiller consisting of a series of dull flat discs with notched edges or other approved equipment.
E. Anchor mulch to a depth of approximately 1½ to 2½ inches in the soil.
3.05 WATERING
A. Follow seed suppliers recommendations. B. Water supplied at Contractor’s expense.
END OF SECTION
SECTION 03300
CAST-IN-PLACE CONCRETE (NON-STRUCTURAL)
PART 1 - GENERAL
1.01 SUMMARY
A. This section includes provisions for non-structural cast-in-place concrete. 1.02 REFERENCES
A. ASTM C33 – Standard Specification for Concrete Aggregates.
B. ASTM C94 – Standard Specification for Ready Mix Concrete.
C. ASTM C144 – Standard Specification for Mortar Aggregate.
D. ASTM C150 – Standard Specification for Portland Cement.
E. ASTM A185 – Welded Steel Wire Fabric, Plain for Concrete Reinforcement.
F. ASTM A615 – Deformed and Plain Billet-Steel Bars for Concrete
Reinforcement.
1.03 QUALITY ASSURANCE
A. Obtain cement and aggregate from the same source for all work.
B. Perform work in accordance with ACI 301.
PART 2 - PRODUCTS
2.01 CONCRETE MATERIALS
A. Cement: ASTM C150, Portland Cement Type – IA, Air Entrained.
B. Aggregates: ASTM C33.
1. Fine Aggregates:
a. Fine aggregates shall be clean, hard, tough, water sound and free of deleterious substances.
b. One hundred percent passing 3/8-inch sieve.
c. At least fifty percent passing No. 16 sieve.
2. Coarse Aggregates
a. Coarse aggregates shall be clean, hard, tough, water sound and free of deleterious substances.
b. Maximum aggregate size for reinforced concrete shall not be larger
than 1/5 of the narrowest dimension between forms, nor larger than 3/4 of the minimum clear spacing between reinforcing bars or between bars and forms.
c. Maximum aggregate size for unreinforced slabs shall not be larger
than 1/3 the slab thickness or 2 inches, whichever is smaller.
C. Mixing Water
1. Use potable water unless approved by Engineer.
D. Material Storage
1. Store materials in such a manner as to prevent deterioration or intrusion of foreign matter.
2.02 METAL REINFORCEMENT
A. Rebar: Conforming to ASTM A615
B. Welded Wire Fabric: Conform to ASTM A185
PART 3 - EXECUTION
3.01 PLACING CONCRETE
A. Concrete shall not be placed when atmospheric temperature is below 40 degrees Fahrenheit unless authorized in writing by the Engineer.
B. Forms shall conform to shapes, lines and dimensions of members as called for
on the plans and shall be sufficiently tight to prevent leakage of mortar.
1. Properly brace and tie forms together to maintain position and shape and prevent leakage.
C. Remove water from place of deposit before concrete is placed.
D. Moisten subgrade at the time the concrete is deposited.
E. For job mixed concrete, rotate the mix at the speed recommended by the manufacturer in a clean batch machine. Mix the materials until they are uniformly distributed.
F. Deliver and mix Ready-Mixed Concrete in accordance with ASTM C94.
G. Access to the mixing plant shall be provided to the Engineer.
H. Tickets indicating time of adding initial mixing water may be required by the
Engineer.
I. Place concrete in one continuous operation, once placing is started.
J. Remove supporting forms and shoring after members have acquired sufficient strength to support their weight and imposed loads safely.
K. If concrete placement is authorized for atmospheric temperatures at or below
40 degrees Fahrenheit, concrete temperature shall not be less than 45 degrees Fahrenheit at the time of placement.
1. Heating procedures that alter or prevent the entrainment of the required
amount of air in the concrete will not be permitted.
2. Do not heat aggregates and water used for mixing to a temperature exceeding 120 degrees Fahrenheit.
L. Air temperatures surrounding concrete shall be maintained at a temperature of
not less than 45 degrees Fahrenheit, or more than 70 degrees Fahrenheit, for a period of four days.
1. Following the four-day period, the concrete shall be protected from air
temperatures below 35 degrees Fahrenheit, for an additional four-day period.
M. Chemical or other foreign material shall not be added to the concrete.
3.02 FIELD QUALITY CONTROL
A. Concrete shall have a compressive strength of 3000 psi at 28 days unless otherwise specified or noted on the drawings.
B. The Engineer may require slump and compression tests.
END OF SECTION
SECTION 04410 PACKAGED ENGINE GENERATOR
PART 1 - GENERAL
1.1 SUMMARY
A. Related Documents: 1. Drawings and general provisions of the Subcontract apply to this Section. 2. Review these documents for coordination with additional requirements
and information that apply to work under this Section.
B. Section Includes: 1. 20 kW / 20 kVA diesel engine-generator set and accessories, [with an
outdoor, sound attenuating enclosure,] skid mounted [with a sub-base fuel oil tank and interconnecting piping,] starting batteries and battery support, 120 volt charger, radiator exhaust and engine exhaust silencing system.
1.2 REFERENCES
A. General: 1. The following documents form part of the Specifications to the extent
stated. Where differences exist between codes and standards, the one affording the greatest protection shall apply.
2. Unless otherwise noted, the referenced standard edition is the current one at the time of commencement of the Work.
B. ANSI/NFPA 70 - National Electrical Code.
C. ASTM International.
D. LBNL Facilities Department Lateral Force Design Criteria.
E. NFPA – National Fire Protection Association: 1. NFPA 30 – Flammable and Combustible Liquids 2. NFPA 37 – Standard for the Use and Installation of Stationary Combustion
Engines and Gas Turbines 3. NFPA 70 - National Electrical Code (NEC). 4. NFPA 110 - “Emergency and Standby Power Systems”. 5. NFPA 272 - "Standard Method of Test for Fire and Smoke Characteristics
of Wires and Cables".
F. NEMA – National Electrical Manufacturers Association: 1. NEMA MG 1 – Standard for Motors and Generators
2. NEMA WC 5 - Thermoplastic-Insulated Wire and Cable for the Transmission and Distribution of Electrical Energy.
3. NEMA AB 1 - Molded Case Circuit Breakers. 4. NEMA ICS2 – Industrial Controls and Systems: Controllers, Contactors
and Overload Relays Rated 600 Volts 5. NEMA KS1 Enclosed and Miscellaneous Distribution Equipment
Switches (600 Volts Max.)
G. NETA ATS - Acceptance Testing Specifications for Electrical Power Distribution Equipment and Systems
H. UL – Underwriters' Laboratories: 1. UL 508 A Industrial Control Equipment.
1.3 PERFORMANCE REQUIREMENTS
A. The unit shall be capable of operating continuously at rated loading at 1,000 feet above sea level with ambient conditions of 104 deg F (40 deg C) and 65 percent relative humidity. De-rating of the output shall be not more than one percent for every 10 deg F (-12 deg C) AB 1ove 104 deg F (40 deg C) ambient. Combined unit noise level shall not exceed 73 dBA at 23 feet (7 m), as measured from any corner of the unit.
1.4 SUBMITTALS
A. Submit catalog cuts with bids for all items proposed to be furnished and installed under this Section.
B. Submit shop drawings to show physical arrangements, connections, finishes, provisions for connections, access requirements for installation and maintenance, physical size, mechanical and electrical characteristics and ratings, foundation and support details, and equipment weights, where such details are not indicated on the catalogue cuts. The drawings and sketches shall be prepared in AutoCAD 2015. Within twenty (20) days after the Award of Order, the vendor shall submit five (5) sets of complete shop drawings and product data along with the electronic drawing files on CD-ROM for University’s review and approval. Provide specific data on the following: 1. Outline drawings showing overall assembly and drawings illustrating
arrangement (plan, front, and side views) and lifting provisions. 2. Certified outline plan, general arrangement (setting plan), and anchor bolt
details, including locations, sizes and model numbers of seismic isolators. Drawings shall show the total weight and center of gravity of the assembled engine-generator set on the structural steel sub-base.
3. Arrangement detail of exhaust duct and muffler piping systems and the fuel oil piping systems.
4. Arrangement, size, and location of all electrical interface points and detailed elementary, schematic, wiring, and interconnection diagrams of the generator, exciter, governor, and other integral devices. Provide a wiring diagram including a complete schematic diagram.
5. Dimensional drawings or catalog cuts of the exhaust silencer, oxidation catalyst, intake filter, pumps, fuel oil tank, oil filters, starting equipment, battery chargers, batteries, battery racks, generator enclosure (if required) and dBA rating, and other auxiliary equipment.
6. Arrangement or assembly drawings showing location of major auxiliary equipment in relation to the engine-generator set and details of fabricating all supports and connections thereto.
7. Piping schematics for fuel oil showing pipe sizes and valve locations, tank construction, and tank monitor.
8. Engine-generator control panel. 9. Specifications for a suitable fuel showing consumption performance using
this fuel. 10. Certified factory prototype test.
C. Calculations prepared by a registered Civil Engineer to demonstrate compliance with seismic requirements as set forth below, including bolting of the engine-generator skid to a concrete foundation.
D. Maintenance Manuals: 1. Submittals shall include, but not be limited to, five (5) copies of the items
listed below. CD-ROMs(s) shall be submitted with electronic files of all drawings and sketches using Auto CAD 2015. In addition, the vendor shall include any additional procedures judged necessary by the manufacturer to insure the maximum performance and service reliability for the engine-generator set.
2. The diesel engine shop manual(s) including complete service instructions. 3. Parts list with the manufacturer's or interchangeable part number. 4. Drawings of the engine-generator set with center of gravity clearly
indicated. 5. Schematic and wiring diagrams of all power and control circuits for the
engine-generator set and all its appliances and options. 6. Fuel system piping diagram.
1.5 QUALITY ASSURANCE
A. Anchorage of the system shall be designed to comply with the current CBC for a Type A seismic source within 2 kilometers of the source. The dead load assumed to resist overturning shall not exceed 0.75W.
B. Manufacturer's Representative: Furnish the services of a qualified field engineer, experienced in the installation and operation of the type of systems
being provided, to supervise the installation, testing, adjustment of the system, and to provide training for University personnel.
C. Manufacturer's Responsibility: 1. The engine-generator set shall be manufactured by a single manufacturer
who has been regularly engaged in the production of engine-generator sets for a minimum of 10 years. The emergency generator system described herein, including these components shall be factory built, factory-tested at rated load, starting duty and power factor, and shipped by this single manufacturer, so there is one source of supply and responsibility for guarantee, parts, and service. This manufacturer shall have a local representative in the San Francisco Bay Area who can provide factory-trained servicemen, required stock of replacement parts, and technical assistance.
2. The emergency generator system shall meet all requirements of NFPA 110, [Level 1][Level 2], including design specifications, prototype tests, one-step full load pickup, and installation acceptance.
3. The responsibility for performance to this Section in its entirety shall not be split up among individual suppliers of components comprising the system, but shall be assumed solely by the engine-generator set manufacturer. All controls shall be the standard of the engine-generator set manufacturer. Control parts shall be identified by parts numbers of this manufacturer and shall have second source listing where applicable. Control systems that are supplied by a vendor and not incorporated within the documentation drawings of the engine-generator set manufacturer are not acceptable.
1.6 EXTRA MATERIALS
A. As a separate quote, the bidders shall submit a recommended spare parts list with prices for one year of operation, assuming a total run time of 100 hours. The list shall include as a minimum, elements for oil, fuel and water filters, and belt sets. The price list shall be valid for 90 days from the date of the equipment delivery.
1.7 WARRANTY
A. The engine-generator unit shall be warranted for a minimum of 1 year from the date of commissioning against all defects in material, equipment and workmanship.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Kohler Power Systems
2.2 ENGINE-GENERATOR SET
A. The diesel, engine-generator set shall be rated for continuous standby service (defined as meeting NEMA MG 1 continuous temperature rise ratings for the duration of any power outage) at not less than the specified kW/kVA at 0.80 power factor.
2.3 CONSTRUCTION
A. The engine-generator set shall consist of a diesel engine direct-connected to an alternating-current generator having a brushless excitation system and shall be provided with all necessary accessories, auxiliaries, appurtenances, control equipment, and cooling systems, resulting in a complete set and, except for external service connections, ready for operation. The engine-generator set shall be mounted on a structural steel sub-base sized to support the engine; generator-exciter, engine-generator control panel; lubricating oil filters, fuel oil filters and pumps; and interconnecting piping and wiring for all systems. The engine unit-mounted radiator and auxiliaries shall also be mounted on the engine-generator set sub-base. The engine-generator set shall include the electric starter, controls, and related wiring for electric starting. The batteries, battery racks, and engine mounted battery charger, and separate 120 volt battery charger assembly shall be mounted on the engine-generator set sub-base/fuel tank.
B. The engine-generator set shall be provided with vibration isolators between the engine-generator and its structural sub-base/fuel tank. The vibration isolators shall be suitable to meet the seismic requirements of Section 1.4.C.1 and shall be as recommended by the engine-generator set and vibration isolator manufacturers to suit the specific equipment involved but shall be not less than 6 steel-spring type, Korfund Series L, Type LKD, Mason Industries Type SSLFH, or equal. The engine and generator shall be factory aligned on the sub-base/fuel tank and securely bolted into place in accordance with the manufacturer's standard practice.
C. The engine-generator set, after assembly, shall be painted overall with manufacturer's standard color. After tests and before shipping, the engine-generator set shall be thoroughly cleaned and the painting retouched as necessary to provide complete protection to the set. The manufacturer shall provide one gallon of the identical paint in the paint manufacturer's sealed containers with the engine-generator set.
D. The engine-generator set shall be arranged for automatic unattended starting in addition to manual start-and-stop by the engine-generator control panel push buttons. Three-position toggle switches may be utilized in lieu of push buttons,
if their use is the manufacturer's standard. Lighting-type toggle switches are not acceptable. The engine-generator set shall be capable of automatically starting, coming up to synchronous speed, and providing full rated power at rated voltage and frequency within 10 seconds after failure of normal power.
2.4 ENGINE AND ACCESSORIES
A. Engine: The engine shall be an integral radiator anti-freeze cooled, full-compression ignition, four-cycle, single-acting, solid-injection unit, either in-line or V-type, made in the United States. 1. The engine shall be turbocharged or naturally aspirated and a product of a
nationally recognized manufacturer, regularly employed in the manufacturing of the type of unit specified.
2. The engine shall be capable of satisfactory performance on a commercial grade of distilled fuel oil such as No. 2 domestic burner oil. DIESEL-engines requiring premium fuel will not be approved.
B. Governor: The solid state engine governor shall maintain isochronous frequency regulation from no load to full-rated load. Steady-state operating band shall be plus or minus 0.25 percent. The droop shall be within 0 - 5 percent percent from no load to full load and adjustable. The governor shall be capable of speed adjustment from the control panel.
C. Protective Devices: Provide as a minimum pre-alarms for low coolant temperature, low lubricating oil pressure, and high coolant temperature. Provide as a minimum safety shutoffs for high coolant temperature, low oil pressure, engine overspeed, and engine overcrank, and other devices as recommended or normally provided by the manufacturer.
D. Lubrication: 1. A gear-type lubricating oil pump shall be provided to supply oil under
pressure to main bearings, crank pin bearings, pistons, timing gears, cam-shaft bearings and valve rocker mechanisms.
2. Pistons shall be spray cooled. 3. Effective full flow lubricating oil filters shall be provided and so located that
lubricating oil is continuously filtered, except during periods when oil is bypassed to protect vital parts such as when filters are clogged. A sample cock on the filter inlet shall be provided.
4. A suitable water-cooled, engine-mounted lubricating oil cooler shall be furnished.
E. Fuel System: 1. When a sub-base fuel oil tank is specified, the sub-base fuel oil tank
should not be more than 18 inches (457mm) in height and is to have sufficient capacity for a minimum of twenty-four (24) hours of full load operation.
2. Injection pump and injection valves shall not require adjustment in service .
3. The engine shall have at least one mechanical injection pump for the generator and one individual injection valve for each cylinder, any one of which may be removed and replaced from parts stock.
4. Fuel injection pump shall be positive-action, constant-stroke pumps, actuated by a cam driven by gears from the engine crankshaft.
5. Fuel lines between injection pump and valves shall be heavy seamless tubing, and to eliminate irregularity of fuel injections, shall be of the same length for all cylinders.
6. Fuel system shall be equipped with replaceable fuel filter elements which may be easily removed without breaking any fuel line connections or disturbing the fuel pumps or any other parts of the engine.
7. Fuel filters shall be conveniently located in one accessible housing ahead of the injection pump so that fuel shall have been thoroughly filtered before it reaches the pump. No screens or filters requiring cleaning or replacement shall be used in the injection pump or injection valve assemblies.
8. Engine shall be equipped with a built-in, gear-type, engine driven fuel transfer pump, capable of lifting fuel as necessary from the sub-base tank to the engine and capable of supplying fuel through the filters to the injection pump at a constant pressure.
9. Provide a manual bypass valve around the solenoid fuel valve. The manual bypass shall be visible, accessible, and its purpose identified. This fuel valve shall not be the valve used for malfunction or emergency shutdown.
10. The fuel system shall meet the requirements of Federal, State and Bay Area Emission Standards .
F. Cooling System: The system shall include an engine-driven water circulating pump, fan guard, an engine-driven blower-type fan, and bypass-type thermostats. The water circulating pump shall be an engine-driven pump with all controls, automatic and manual, suitable for the engine-mounted radiator. The radiator cooling system shall have sufficient capacity for cooling the engine when the engine-generator set is delivering full-rated load in an ambient temperature of up to 40 deg C (104 deg F). Total air flow restriction to and from the radiator shall not exceed 0.5 inches (13 mm) of water nor as necessary to meet the manufacturer's requirements, whichever is less. 1. Engine Jacket Water Heater: Provide a 120 volt jacket water heater of
sufficient capacity to maintain an engine coolant temperature of 70°F (21° C) with an ambient of 25°F (-4°C). Heater or heaters shall be thermostatically controlled. On "Vee" type engines, two heaters, one for each side shall be supplied.
2. Coolant Level Switch: Provide a coolant level switch at the proper place in the cooling system to prevent the engine from running when the coolant level is sufficiently low to impair continued operation of the engine. Operation of the switch shall be an annunciated signal.
3. The engine cooling system shall be pretreated by the engine supplier for the inhibition of internal corrosion.
4. Equip system with all guards required to meet State of California Administrative Code, Title 8.
G. Exhaust System: 1. An internal critical grade exhaust silencer shall be provided. The silencer
is to be provided with an appropriate size and type of flange fitting for connection to an exhaust flue (provided by others).
2. Operating exhaust noise under full load shall not exceed 68 dBA at 23 feet (7000mm).
3. Measurement shall be made with a sound level meter meeting or exceeding ANSI Sl.4 and octave band filters meeting or exceeding ANSI Sl.ll.
H. Oxidation Catalyst: An internal oxidation catalyst shall be provided to purify the engine exhaust. The catalyst shall clean emissions to a maximum of 0.01 g/hp-hr. The unit shall be clamped-type, Nett Technologies, Inc., Series “D” or equal.
I. Air Cleaners: Provide one or more engine-mounted dry-type air cleaners or intake air filters of sufficient capacity to protect working parts of the engine from dust and grit.
J. Engine Alternator: A battery charging alternator shall be supplied with a voltage and current regulator to provide quick recharge of the batteries after an engine start.
2.5 GENERATOR
A. General Description: The 12 lead NEMA-Type generator shall be connected for the specified voltage, 1 phase, 3-wire, 60 Hz for the full kW rating of the diesel-generator unit at 0.8 pf standby operation as described under NEMA MG 1-22.84, and shall meet the short circuit requirement of NEMA MG 1-22.45 and starting duty per Section 2.05.F. The generator shall be open guarded construction and be free of injurious torsional and bending vibrations within a speed range from 10 percent below to 0 percent above synchronous speed. The generator shall have prelubricated-type ball bearings.
B. Windings: The generator shall be a direct engine driven synchronous, brushless type, with radio interference suppression. The rotor windings shall be amortisseur type, and the stator shall be skewed. Windings shall be copper with terminal markings conforming to NEMA MG 1-2.02. Windings shall have a Class F insulation rating or higher with operating temperature rise of Class B insulation. The generator terminal box shall be large enough to accommodate all necessary conductors (termination lugs shall be included).
C. Wave Shape Deviation: The wave shape deviation factor for synchronous machines shall not be greater than is specified in NEMA MG 1-22.42. The telephone influence factor shall not be greater than is specified in NEMA MG 1-22.43.
D. Nameplate Data: The generator shall have a rigidly fixed nameplate listing all data described in NEMA MG 1-22.61.
E. Voltage Regulator: The generator shall be equipped with a solid state voltage regulator- zener diode referenced. Provide harmonic filters on the input to the regulator. Generator output voltage shall be maintained within the limits specified below: 0.8 percent RMS no load, to full load (0.8 to 1.0 PF) with a 5 percent speed change and a 20 deg C (68 deg F) ambient temperature change; transient dip not to exceed 15 percent upon application of full load including sufficient out-of-phase SCR loads to lower a unity power factor to 0.8; recovery to rated voltage and frequency shall occur within two seconds. A vernier adjustment shall be provided on the main control panel to allow a voltage adjustment of up to 5 percent either side of nominal.
F. Starting Duty: The generator shall have sufficient capacity for a 64 HP motor load starting surge with an operating load of 37 kVA on the system. The voltage dip during starting shall not exceed 15 percent of the voltage rating.
2.6 FUEL OIL SYSTEM
A. General: Conform to NFPA 30 and 37. The unit shall contain its own fuel storage tank, filler and vent piping, flexible connections to engine, low fuel level alarm system. The main fuel pump on the engine shall be capable of supplying fuel directly from the storage tank without the need of any intermediate pump.
B. Diesel Fuel Storage Tank: On board fuel tank as shown on plans
C. Leak Detector: A fuel tank leak detector system shall be furnished and installed in a manner which conforms to the Requirements of the State of California.
D. Low Fuel Alarm: A low fuel supply sensing device shall be installed on the storage tank. The sensing device shall be adjusted to signal low fuel level when the tank is less than one-quarter full. An audible horn shall sound, at least 80 dB at 10 feet (3050mm). A reset button shall silence the horn, but produce a red indicating light until the fuel level has been raised above the one-quarter full level.
E. Flexible Fuel Lines: Stainless steel flexible fuel lines at least [12 inches (305mm)] long, with bronze braid, shall connect the fuel lines to the engine.
2.7 ELECTRIC STARTING SYSTEM
A. A 24-volt direct-current starting battery installation shall be provided for starting of the engine-generator set utilizing an electric cranking system. The electric cranking system shall be capable of rotating the engine at a speed sufficient for rapid starting in an ambient temperature of 20 deg F (-7 deg C). The signal for starting shall come from the engine-generator set control system or from external two wire control.
B. Cranking: The electric cranking system shall be energized from the starting batteries' negative polarity grounded, direct-current (dc) electrical circuit. The cranking motor shall be of the heavy-duty type with adequate capacity to crank the engine continuously to start the engine. The drive mechanism for engaging the starting motor with the engine flywheel shall be designed to inherently engage and release without binding. When the engine starts, a "stop cranking" switch shall be engine-speed actuated and shall cause disengagement of the starting gearing and the shutdown of the starting motor.
C. Starting Battery Installation: The engine-cranking storage battery shall be of the sealed, nickel-cadmium type rated by the battery manufacturer in accordance with cranking rating requirement required by the engine manufacturer and shall be of sufficient size and capacity in a fully charged condition to crank the engine at the rated ambient for a minimum of five (5) minutes. Suitable battery racks or enclosures, properly ventilated shall be provided for the batteries and the battery charger. All necessary cabling shall be provided and installed integrally on the engine-generator set. Exposed cabling shall be installed in conduit. Batteries may be mounted in a separate free-standing battery rack, if such is the manufacturer's requirement for nickel cadmium batteries. All cable terminations and cell-to-cell interconnecting bus straps shall have insulating covers or caps.
D. Starting Battery Charger: The battery charger shall be enclosed, automatic, dual-rate, solid-state, constant-voltage type having ac voltage compensation, dc voltage regulation, and shall be current limiting. The battery charger shall be located in the control panel or otherwise integrally mounted on the engine-generator set. The battery charger shall employ transistor-controlled magnetic amplifier circuits to provide continuous taper charging. The battery charger shall have two ranges, float and equalize, with a 0 to 24 hour equalizer timer, a dc cranking relay, silicon diode full-wave rectifiers, automatic surge suppressers, a dc ammeter, a dc voltmeter, and fused inputs and outputs. The battery charger shall have a continuous rated output of not less than 10 amperes. The battery charger shall conform to UL 1236.
2.8 ENGINE-GENERATOR SET CONTROLS
A. General: An instrumentation and control panel with full annunciation of NFPA 110, Level 1 safety indications and shutdowns. The panel shall be a gasketed NEMA 1 rated enclosure within the weather-proof NEMA 3R housing and be
mounted on rubber vibration isolators. The front panel shall be well laid out with all controls and indicators clearly marked on phenolic-engraved nameplates or other permanently etched or indented lettering.
B. Visual Metering: Provide visual meters to display the following: 1. AC voltmeter with range to 600 Volts, 3 1/2 digit LCD or LED display, 2
percent accuracy at mid-range. 2. AC current to 400, 4-1/2 digit LCD or LED display, phase selectable.
Accuracy shall be within 2 percent from 100 Amps to full scale. 3. AC frequency, 60 Hz nominal, 3-1/2 digit LCD or LED display. Accuracy
shall be within 2 percent for the range 10 percent each side of nominal. 4. Running time of unit to ten thousand accumulated hours in tenth of hour
segments, jeweled movements, and shock resistant sealed cases. The meter shall not be resettable.
5. Battery charging current from engine alternator shall show amount of charge and discharge in amperes.
6. Engine coolant temperature to at least 240°F (116°C). 7. Engine oil pressure readable in 5 psi (34.5kPa) increments. 8. The regulator shall have a Vernier adjustment for the voltage.
C. Visual Indicators: Provide visual indicators to display the following: 1. Overcrank condition (red) 2. Low oil pressure (red) 3. High coolant temperature (red) 4. Overspeed condition (red) 5. Low DIESEL fuel (amber) 6. Generator supplying load (green) 7. Low battery voltage (red) 8. Low coolant temperature (red) 9. Battery charger failure (red) 10. Prealarm low oil pressure (amber) 11. Prealarm high coolant temperature (amber) 12. Air shutdown damper (if used) (red) 13. Low coolant level (red) 14. Lamp test (white) 15. Control switch not in AUTO position (flashing red)
D. Common Alarm: Provide Form “C” contacts that change state upon any pre-alarm, alarm, shutdown or trouble signal.
E. Wiring And Identification: All wiring and interconnections shall be well laid out and neatly executed in accordance with NEMA ICS 2. All wiring is to be properly identified by numbering or unique color coding. Such numbering and coding shall agree with those on the wiring diagram. Wiring shall go to terminal strips for intermediate connection unless wiring is contained in a cable or in a harness with keyed connectors.
F. Remote Annunciator: The annunciator shall be in a NEMA 1 enclosure completely wired with terminal strips for outgoing wires. Provide the annunciator with the following features for remote monitoring: 1. Overcrank condition (red) 2. Low oil pressure (red) 3. High coolant temperature (red) 4. Overspeed condition (red) 5. Low DIESEL fuel (amber) 6. Generator supplying load (green) 7. Generator running (green) 8. Low coolant temperature (red) 9. Battery charger failure (red) 10. Low battery voltage (red) 11. Prealarm low oil pressure (amber) 12. Prealarm high coolant temperature (amber) 13. Air shutdown damper (if used) (red) 14. Low coolant level (red) 15. Lamp test (white) 16. Control switch not in AUTO position (flashing red) 17. Alarm silence (red)
G. Generator Circuit Breaker: 1. As manufactured by Cutler-Hammer, General Electric or Siemens.
Provide a 600V, 3 pole, molded-case circuit breaker, with an interrupting rating of [_____] AIC, conforming to NEMA AB 1 and UL 489 and having a 100-percent ampere rating. The circuit breaker shall have a [___] ampere frame with a [___] ampere solid state tripping device with adjustable long-time and short-time tripping characteristics. Provide a stored-energy closing mechanism for rapid and safe closing of the circuit breaker against fault currents within the short-time rating of the circuit breaker independent of the operator's strength or effort in closing the handle and provide lugs for the indicated electrical connection. The Generator Circuit Breaker shall be interlocked with the Load Test Bank Circuit Breaker to allow only one circuit breaker to be closed at a time.
H. Engine Starting Switch: The switch shall be a three-position rotary, enclosed rear-mounting type. The switch shall be the maintained position type. The switch positions shall be "Automatic" or "Remote", "Off", and "Manual" and shall be connected to provide the following operations. 1. In the "Automatic" or "Remote" position, the engine-generator set shall
start automatically in response to loss of voltage, all as more fully described in the paragraph entitled "Automatic Controls."
2. "OFF" Position: In the "OFF" position, the generator shall shut down. All controls shall be reset in this position.
3. "MANUAL" Position: In the "MANUAL" position, the engine shall start upon depression of the start button. The engine shall run but the load
cannot be put on line until an automatic transfer switch transfers to the emergency position.
I. Automatic Controls: 1. Engine Cranking Relay: Provide to operate as follows:
a. Automatic operation shall commence when any remote control element in an automatic transfer switch detects a normal power failure and closes a command contact to actuate the engine starting system. The engine-generator set shall pick up load when the voltage and the frequency of the generator reaches the values required to actuate the automatic transfer switch mechanisms. Provide terminals for two start signals from automatic transfer switches.
b. Should the engine fail to start at once, cranking shall continue for 25 seconds (adjustable) after which a 10-second "off" period (adjustable) shall occur, followed by a 7-second starting period (adjustable) and another 7-second "off" period (adjustable). Durations of cranking and "off" periods listed above may be modified in accordance with the engine-generator set manufacturer's recommendations.
c. The above cranking cycle shall be repeated for three starting attempts.
d. If the engine still fails to start, the cranking device shall lock out further starting attempts until it is manually reset. When the cranking relay locks out, an alarm light shall be energized on the engine-generator control panel and remain lighted until it is manually reset.
2. Automatic Stopping: After the engine-generator set is fully unloaded as signaled by an automatic transfer switch, the engine-generator set shall continue to operate for a period of 1 to 30 minutes (adjustable), wherein the engine-generator set shall shut down.
J. Engine Shutdown Relay: Provide and actuate by the engine protective devices. The shutdown relay shall disable all engine starting circuits until manually reset. Provide a reset push button on the engine-generator control panel.
2.9 WIRING
A. Internal wiring for the engine-generator, and control panel shall be stranded copper conductor, No. 14 AWG minimum, with 600 volt insulation suitable for the application. All wiring to external points shall be brought to a common terminal block.
2.10 PAINTING
A. Painting will not be required for parts of equipment that are manufactured of corrosion-resistant materials or are machine finished and normally left
unpainted. All other parts of equipment and ferrous surfaces shall be painted with manufacturer's standard finish paint system.
2.11 SAFETY REQUIREMENTS
A. The engine-generator set shall be furnished with adequate safety devices of the latest approved type. Moving parts which are hazardous to personnel shall be suitable protected. All equipment and components shall conform to the safety requirements of the Occupational Safety and Health Act (OSHA) and to State and local safety codes. Ample protection against electrical shock shall be provided.
B. Heat Protective Devices: Suitable guards in compliance with OSHA requirements shall be installed to protect personnel from accidental contact with any parts of the exhaust gas system whose surface temperatures are expected to exceed 540 deg C (1000 deg F). Protective measures such as water cooled exhaust manifolds, insulated manifolds and piping, and metal screen protectors around exhaust silencers shall be employed.
C. Use of mercury in gages is not permitted.
2.12 MAINTENANCE REQUIREMENTS
A. All replaceable parts shall be manufactured to definite standards for tolerance, clearance, and finish in order that any such part may be field installed without further machining or fitting. All parts shall be permanently and legibly marked with the original manufacturer's part number where practical. Parts or assemblies that require "fitting" for proper assembly shall be identified and separately listed in the parts manual.
2.13 ENGINE-GENERATOR ENCLOSURE
A. Outdoor Enclosure (if specified): A sound attenuating enclosure designed and rated for outdoor use and be of rugged steel construction. The sound attenuating enclosure shall be securely mounted to the frame of the engine-generator unit but not rely on the engine-generator for any support. The sound attenuating enclosure shall have easily removable doors for access from all sides. The doors shall have padlockable 3-point latches, with welded hinges and gaskets. There shall be a proper amount of air intake and air discharge louvers with rain hoods to allow the engine-generator to perform at the specified capacity. Thermostatically controlled space heaters shall be provided to prevent the accumulation of condensation within the enclosure and on the equipment. The space heaters shall operate at 120V.
B. Painting: The housing shall be thoroughly cleaned and prepared for painting. A rust inhibiting primer shall be applied inside and out and cover all metal surfaces, edges, and inside corners of fabricated pieces. The housing shall then be finished with two coats of high quality alkyd-resin automotive type paint system. Color of exposed portions of the housing shall be ANSI-61 gray.
PART 3 - EXECUTION
3.1 FACTORY PROTOTYPE TESTS
A. The engine-generator set consisting of the engine, generator, governor, coupling and all controls shall have been tested as complete unit utilizing testing on a prototype model as required by NFPA 110. The tests, being potentially damaging to the equipment tested, shall not be performed on the engine-generator set supplied. These tests shall be certified by means of documentation accompanying submittal data required in Part 1.04. Prototype testing shall provide the following data:
B. Load test for maximum power level (maximum kW).
C. Load test for maximum motor starting capacity (maximum kVA) and voltage dip recovery within 7 cycles of applied load.
D. Structural soundness (Short-Circuit and Endurance Tests).
E. Torsiograph Analysis: The manufacturer of the engine-generator set shall verify that the engine-generator combination, as configured, is free from harmful torsional stresses. The analysis shall include correlation of empirical data from tests on a representative prototype unit. The empirical data shall include spectrum analysis of the torsional transducer output within the critical speed range of the engine-generator set. Results of this analysis shall be made available on request. Calculations based on engine and generator separately are not acceptable.
F. Engine-generator cooling air requirements.
G. Transient response and steady-state speed control and voltage regulation.
H. Generator temperature rise per NEMA MG 1.
I. Harmonic analysis and voltage waveform deviation per MIL-STD-705B, method 601.4.
J. Three-phase short-circuit testing for mechanical and electrical strength. With the system operating at rated voltage, amperage, power factor, and speed, the
generator terminals shall be short circuited 10 times on all three phases for a duration of 30 seconds. The engine-generator set shall build up and perform normally without manual interventions of any kind such as resetting of a circuit breaker or other tripping devices when the short circuit is removed.
K. Failure mode test for voltage regulator. With engine-generator set operating at no load, rated speed and voltage, the alternating current sensing circuit to the regulator shall be disconnected for a period of at least one hour. The engine-generator set shall be fully operative after the test and without evidence of damage.
L. Endurance testing is required to detect and correct potential electrical and mechanical problems associated with typical operations.
3.2 FACTORY PRODUCTION TEST
A. Test the complete engine-generator set including oxidation catalyst, exhaust silencer, exhaust piping and skid-mounted accessories such as the engine-generator control panel at the engine manufacturer's factory. Perform the test with the engine-generator set completely assembled on the permanent skid-mounting.
B. Notify the Owner in writing of the proposed test date not less than 15 working days prior to same, and allow representatives of the Owner to observe tests.
C. Perform start, transient load, and continuous load tests as follows: 1. Engine coolant at 80 deg F (27 deg C) before start-up. 2. Start the engine and demonstrate that rated voltage and frequency are
reached in 10 seconds or less. 3. Immediately following the 10-second start period apply 125-percent rated
kVA at 0.8 power factor. Voltage dip shall not exceed 15 percent. After 5 seconds decrease load so as to provide a 100-percent rated kW, 1.0 power factor load. Voltage rise shall not exceed 15 percent and shall return to plus or minus 0.5 percent of rated within 2 seconds. Record transients with an oscillograph, and include copies with the test reports.
D. Include a 4-hour test period of continuous operation at 100-percent rated kW and 1.0 power factor generator output. Record the following at 15-minute intervals. 1. Ambient air, water, oil, and exhaust temperatures. 2. Oil pressure. 3. Generator output voltage, current, frequency, kW, power factor, and
temperature rise.
E. Submit 5 certified copies of report of both prototype and production test results to the University, and obtain approval before shipment to the site.
3.3 field installation
A. Verify that equipment pads are dimensionally correct and ready to receive the equipment.
B. Verify that required utilities are available, in proper location and ready for use.
C. Install equipment in accordance with manufacturer’s instructions.
D. Install safety labels to NEMA 260 and labeling
3.4 JOB SITE TESTING
A. Installation acceptance testing shall be performed in accordance with the procedures of NFPA 110 Chapter 5-13. A load test bank of sufficient size to test the engine-generator unit at its full standby rating shall be provided by the Subcontractor. The load test bank shall be connected to the load terminals of the Load Test Bank Circuit Breaker when performing the acceptance tests. Authorized representatives of the manufacturer shall perform the installation acceptance testing. The Owner designated authority having jurisdiction will be present for the installation acceptance testing.
3.5 OPERATION AND MAINTENANCE TRAINING
A. Operating personnel shall be instructed (a minimum of two hours) by the representative in the proper operation and maintenance of the unit on the test day.
B. Formal operation and maintenance training shall be conducted by the vendor or manufacturer's representatives within two weeks of activation of the equipment. An outline of the proposed program shall be submitted for approval at least two weeks before date of commencement of training.
3.6 FINAL SUBMITTALS
A. Five sets of bound copies of text and illustrations, delineating maintenance and repair procedures for engine, generator, engine-generator control, radiator, fuel oil day tank assembly, fuel oil tank gage, and other equipment related to the engine-generator set installation. Assemble data on like equipment in clearly identified and indexed three-ring binders or equal. Include the following: 1. Lubrication charts showing types of lubricant, locations of lubrication
points, and recommended lubrication frequency for all equipment. 2. Parts list of replaceable parts and any special tools required.
3. Lists of component items not the product of the manufacturer of equipment on which used, with local source of supply, catalog cuts, and all necessary information for ordering replacements.
4. Complete AS-BUILT electrical schematic and connection diagrams with all internal and external connection points identified to match identification on equipment.
B. Furnish a written guarantee that the equipment will meet the specified performance. In addition, the guarantee shall cover the equipment against any defects in design, workmanship and material for one year from date of start-up. Also, a one-year labor and material guarantee shall be provided which will be twelve (12) months from date of start-up.
C. Posted Operating Instructions: Submit proposed operating instructions which shall be laminated between matte-surface thermoplastic sheets and be suitable for placement adjacent to applicable equipment. After approval, operating instructions shall be returned to the Subcontractor for installation where directed by the Project Manager.
D. Test Reports: Submit certified test and inspection reports for all work performed in Paragraphs 3.2 & 3.4. A certified report verifying proper installation of all of the system shall be provided to the Project Manager and shall be approved prior to start-up of equipment.
END OF SECTION
