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1 Addendum # 1
IFB SA 1925
4 County Complex Court, Woodbridge, Virginia 22195-2266 · Fax (703) 335-7954
September 13, 2019
IFB SA 1925 – Manassas Southside Water Storage Tank Rehabilitation
Addendum #1
THIS SOLICITATION IS HEREBY AMENDED AS FOLLOWS:
1. Bidder Questions and Owner’s Responses 2. Revised Information 3. Contract Drawings Attachment
All other solicitation terms, conditions and provision remain unchanged and in full force and effect.
Authorized Signature Date
Name Printed Title
Procurement Department
Acknowledgement: Bidders submitting a bid response for the above named solicitation shall take note of the
following changes, additions, deletions, clarification, etc., in the Contract Documents, which shall become a part of
and have precedence over anything shown or described in the Contract Documents, and as such shall be taken into
consideration and be included in the Bidder’s response. All other terms and conditions of the Invitation For Bid shall
remain unchanged.
Bidders must acknowledge receipt of this amendment by signing and returning this addendum with the bid response
prior to the bid deadline.
(1) BIDDER QUESTIONA SNS OWER’S RESPONSES
The following are questions received and answered through the issuance of this Addendum.
Question 1. The Exhibit E Schedule of Unit Prices Item 15 states: Exterior Surfaces Pressure
Wash Clean and Coatings. The Specification section 09 90 00 states: Blast
Surfaces to SP10.
Response: The exterior surface of the tank is to be pressure washed and cleaned.
Specification Section 09 90 00 has been updated to reflect this confirmation.
See Section II below.
Question 2. Can you tell me if Dixon Engineering, Inc. will be the inspection firm or if it’s
another company?
Response: The inspection firm has not yet been finalized.
Question 3. Can you please email me a current plan holder’s list?
Response: The plan holder’s list will be posted in the Service Authority’s website.
Question 4. What is the HWL?
Response: Refer to Specification Section 09 90 00 PAINTING OF STEEL TANKS
AND APPURTENANCES, 3.06.J.1, and identified on the Field Inspection
Report dated April 16, 2019, the High Water Level is 176 FT.
Question 5. Has there been an estimate put on the project?
Response: The Service Authority doesn’t provide estimated bid costs.
Question 6. Can you provide As Built Drawings?
Response: Contract Drawings are attached to this Addendum.
Question 7. What is the schedule for work – set completion dates and/ or anticipated start and
finish dates?
Response: Refer to the Notice to Bidders for bid opening date set for September 24,
2019. The Work is anticipated to start March 2020. Regarding the
Substantial Completion date, there is a correction to the Invitation Letter,
Item 2.C. Work shall be substantially complete in 110 days from Notice to
Proceed.
Question 8. What is the size (gallon capacity) is the tank?
Response: Refer to Specification Section 01 00 01 PROJECT SUMMARY, the tank size
is 2.0 million gallons.
Question 9. Does this project require a bond?
Response: Yes, refer to Article 6 BONDS AND INSURANCE.
Question 10. Is the tank at ground level?
Response: No, the tank is elevated. Refer to attached Contract Drawings.
Question 11. The contract time seems insufficient for this scope/size of tank. Is there a
possibility of extending it? Say 150-180 days?
The contract duration for Substantial Complete cannot be changed due to
peak water demand concerns. Refer to the Notice to Bidders, bid opening is
September 24, 2019 and Work shall be substantially complete in 110 days
from Notice to Proceed.
(2) REVISED INFORMATION:
1. INVITATION LETTER
a) Substantially Completion Date:
Under “Invitation Letter” item 2.C, second sentence: DELETE sentence in its entirety and replace with:” The Work shall be substantially complete in 110 days and in accordance with Article 4.02 of the agreement”
b) Anticipated Start Date:
Under “Invitation Letter” item 2.E, Project Start: ADD sentence in its entirety: “The Owner anticipates to start this project March of 2020.”
2. PART 3 TECHNICAL PROVISION
a) SECTION 09 90 00 Painting of Steel Tanks and Appurtenances
Specification section 09 90 00, 3.04.B, Blast Cleaning, DELETE “and exterior steel
surfaces, including valve/piping vault surfaces”.
(3) ATTACHMENT
Contract Drawings
End of Addendum #1
IFB SA 1925
COVER SHEET, VICINITY, LOCATION MAPS, AND LIST OF DRAWINGS
G001 1
C. FORD J. CAMPBELL
J. MERINO L. BENNETT
AS SHOWN
CTF
N
This document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:15 May 2019 - 11:00 AM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Gen\11193456 - G001.dwg
ANSI D
Date
Plotted By: Cody Ford
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
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IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
1"=2000'-0"
SITE LOCATION
LOT ADDRESS: 8460 SUMMER BREEZE PL, MANASSAS, VA 20110STREET ADDRESS: 8556 PRINCE WILLIAM PARKWAY, MANASSAS, VA 20110
1. OWNER: PRINCE WILLIAM COUNTY SERVICE AUTHORITY
2. P.I.N. 7895-00-8818
3. ZONING* SEMI-RURAL RESIDENTIAL
4. LOT SIZE: 12.34 ACRES(PROPERTY)1.58 ACRES (EASEMENT)
5. DEED REFERENCES: BK1401 PG0317 (PROPERTY)BK2651 PG0487(EASEMENT)
6. TAX ACCOUNT ID: 214682
7. HORIZONTAL DATUM: NAD -83
8. VERTICAL DATUM: NAVD -88
9. STANDARD RESPONSIBILITY NOTES, CONSULTANTS CERTIFICATION, AND SITE ANALYSISARE LOCATED ON THE EROSION & SEDIMENT CONTROL NOTES DRAWINGS.
PROJECT LOCATIONPRINCE WILLIAM COUNTY
VIRGINIA
N
0
SCALE 1"=2000' AT ORIGINAL SIZE
4000'300020001000
List of Drawings
Total Dis. Sht. Drawing Title
1 G 001 COVER SHEET, VICINITY, LOCATION MAPS, AND LIST OF DRAWINGS
2 G 002 LEGENDS, ABBREVIATIONS AND GENERAL NOTES
3 C 001 GENERAL SITE AND GRADING PLAN
4 C 002 EROSION AND SEDIMENT CONTROL PLAN
5 S 001 WATER STORAGE TANK ‐ FLOOR PLAN AND SECTION6 S 002 WATER STORAGE TANK ‐ ROOF PLAN AND DETAILS
7 M 001 WATER STORAGE TANK PLANS AND SECTION8 M 002 WATER STORAGE TANK DETAILS
9 E 001 WATER STORAGE TANK PLANS, SECTION, AND DETAILS
PRINCE WILLIAM COUNTYSERVICE AUTHORITY, VA
MANASSAS SOUTHSIDE WATER STORAGE TANKREHABILITATION
JUNE 2019IFB SA - 1925
PROJECT CODE - 24WMST0101
This document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:15 May 2019 - 11:00 AM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Gen\11193456 - G002.dwg
ANSI D
Date
Plotted By: Cody Ford
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
DraftingCheck
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IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
N
NEW EQUIPMENT, STRUCTURES, ETC., ARE SHOWN ASBOLD LINEWORK AND IN THIS TEXT FORMAT.
SECTION LETTER
DRAWING NUMBER(REPRESENTS DRAWING
WHERE SECTION IS DRAWN)
SECTION LETTER
DRAWING NUMBER(REPRESENTS DRAWING WHERE
SECTION MARKS ARE SHOWN)
DETAIL NUMBERDRAWING NUMBER
(REPRESENTS DRAWINGWHERE DETAIL IS DRAWN)
DETAIL NUMBER
DRAWING NUMBER(REPRESENTS DRAWING
WHERE DETAIL IS DRAWN)
12" DIP, PEFINV EL XX.XX
PIPING DESIGNATION(VARIES, SEE 'LIST OF PIPINGDESIGNATIONS')
PIPE SIZE AND MATERIAL
12" DIP, PEF EL XX.XX℄
INVERT or CENTER LINEELEVATION
INVERT or CENTER LINENOT REQUIRED
PIPE SIZE AND PIPING DESIGNATION(VARIES, SEE 'LIST OF PIPING DESIGNATIONS')
A
X-301
DETAIL NAME
A
X-301
1
X-501
DETAILSCALE:
SECTIONSCALE:
ELEC ELECTRICAL
FM FORCE MAIN
TEL TELEPHONE
SAN SANITARY SEWER
SD STORM DRAIN
W WATER
AGIP AT-GRADE INLET PROTECTION
BOV BLOW-OFF VALVE
BRB BIORETENTION BASIN
CL CENTER LINE
COIP COMBINATION INLET PROTECTION
CONC CONCRETE
CP CONSTRUCTION POINTS
CV CHECK VALVE
DB DUCT BANK
DIP DUCTILE IRON PIPE
EL ELEVATION
ELEC ELECTRIC DUCTBANK
HB HOSE BIB
HDPE HIGH DENSITY POLYETHYLENE PIPE
LOD LIMIT OF DISTURBANCE
MBRB MICRO-BIORETENTION BASIN
MH MANHOLE
NTS NOT TO SCALE
OVF OVERFLOW
RP ROAD CONSTRUCTION POINT
RCP REINFORCED CONCRETE PIPE
SDMH STORM DRAIN MAHNOLE
SF SILT FENCE
SSF SUPER SILT FENCE
SIP STANDARD INLET PROTECTION
STD STANDARD
STA STATION
TEL TELEPHONE CABLE
TM TAX MAP
TRANS TRANSITION
UNK UNKNOWN
X
CURB LINE
GRAVEL PAVEMENT
ASPHALT PAVEMENT
FENCE LINE
STRUCTURE
CONCRETE SIDEWALK/PAVEMENT
TREE LINE
MAJOR CONTOUR
MINOR CONTOUR
RIPRAP/STONE
INLET/CATCH BASIN
E
T
OHE
FM
G
SD
SAN
W
ELECTRIC LINE/CONDUIT
OVERHEAD ELECTRIC
TELEPHONE LINE
FORCE MAIN
GAS LINE
SANITARY SEWER LINE
STORM DRAIN LINE
WATER LINE
MANHOLE
LIGHT POLE
UTILITY POLE
TREE
FIRE HYDRANT
SIGN
CLEANOUTCO
1.25 SPOT GRADE
FM FORCE MAIN
S
10
8
PROPERTY LINE
100 YEAR BASE FLOOD ELEVATION
EASEMENT LINESTREAM/WATER BODY EDGE
TO BE FILLED IN PLACE WITHCONCRETE AND ABANDONED
LIMIT OF SURVEY
12" DIP, SD
PIPE SIZE AND PIPING DESIGNATION(VARIES, SEE 'LIST OF PIPING DESIGNATIONS')
PIPING DESIGNATION(VARIES, SEE 'LIST OF PIPINGDESIGNATIONS')
PIPE SIZE AND MATERIAL
1. CONSTRUCTION SHALL BE IN ACCORDANCE WITH PLAN AND SPECIFICATIONS.
2. ANY NECESSARY LANE CLOSURES SHALL FOLLOW GUIDELINES OUTLINED IN THE VIRGINIA STATE MANUAL OF UNIFORM TRAFFICCONTROL DEVICES (MUTCD).
3. CONTRACTOR SHALL COORDINATE WITH PRINCE WILLIAM COUNTY SERVICE AUTHORITY TO PROTECT, RELOCATE OR REPLACEEXISTING POWER POLES WHEN NECESSARY.
4. EXISTING CONDITIONS SHOWN ON THESE CONTRACT DRAWINGS WERE OBTAINED FROM FIELD SURVEY, RECORD DOCUMENTS ANDAVAILABLE MAPPING AND THEREFORE THEIR LOCATION MUST BE CONSIDERED APPROXIMATE ONLY. CONTRACTOR SHALL FIELDVERIFY EXISTING CONDITIONS PRIOR TO CONSTRUCTION.
5. CONTRACTOR TO REPAIR AND RESTORE ANY ADJACENT ROADWAYS, DRIVEWAYS, CURB, SIDEWALKS, UTILITIES, STORM DRAINS,CULVERTS, SWALES, CLEANOUTS, STRUCTURES, EQUIPMENT, AND/OR SUBGRADE THAT IS EXPOSED, DISTURBED, OR OTHERWISEDAMAGED BY THE CONTRACTOR'S ACTIVITIES.
6. CONTRACTOR SHALL MINIMIZE DISTURBANCE TO LIMIT REMOVAL OF TREES AND OTHER VEGETATION. CONTRACTOR IS RESPONSIBLEFOR ALL COSTS ASSOCIATED WITH CUTTING DOWN, REMOVAL, AND DISPOSAL OF ANY TREES AND VEGETATION, ALONG WITH THECOST ASSOCIATED WITH REPLACING ALL VEGETATION WITH SIMILAR SPECIES.
7. EXISTING PAVEMENT SHALL BE PROTECTED FROM DAMAGE WHERE POSSIBLE. ANY DEMOLISHED OR DAMAGED PAVEMENT TO BEREPAIRED.
8. CONTRACTOR TO FIELD VERIFY LOCATIONS OF EXISTING PIPING AND STRUCTURES.
9. CONTRACTOR SHALL CONFORM WITH ALL APPLICABLE FEDERAL, STATE, AND LOCAL CODES DURING TRENCHING ACTIVITIES.
10. ALL EXISTING PIPING, EQUIPMENT, AND STRUCTURES MUST BE FULLY SUPPORTED DURING CONSTRUCTION AGAINST VERTICAL,HORIZONTAL, AND OVERTURNING FORCES AND MOVEMENT.
11. ALL PIPE JOINTS AND FITTING SHALL BE RESTRAINED PER PLANS AND DETAILS.
12. POWER LINE POLES TO BE PROTECTED AS REQUIRED DURING CONSTRUCTION OF THE FORCE MAINS.
13. COMBINATION SEWAGE AIR/ VACUUM VALVE VAULTS AND BLOW OFF CHAMBER LOCATIONS ARE SHOWN APPROXIMATE. THE AIRRELEASE VALVE SHALL BE FIELD LOCATED AT THE HIGH POINT AND THE BLOW OFF AT THE LOW POINT BASED UPON AS CONSTRUCTEDELEVATIONS.
14. CONTRACTOR SHALL SUPPLY ALL BENDS REQUIRED TO MAINTAIN SMOOTH FLOW LINES, CHANGES IN ELEVATION AND TO MEET ALLTRANSITIONS.
15. CONTRACTOR SHALL REPLACE ALL PAVEMENT AND ROADWAYS THAT IS 1) SHOWN AS REPLACED ON THE CONTRACT DRAWINGS, 2)IMPACTED BY NEW CONSTRUCTION, AND 3) IMPACTED BY CONTRACTOR'S OPERATIONS.
16. SURVEY INFORMATION PROVIDED BY: THE ENGINEERING GROUPE IN APRIL 2019.
LEGENDS, ABBREVIATIONS AND GENERAL NOTES
G002 2
C. FORD J. CAMPBELL
J. MERINO L. BENNETT
AS SHOWN
CTF
278.84BM-GPS1
This document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:15 May 2019 - 11:00 AM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Civil\11193456 - C001.dwg
ANSI D
Date
Plotted By: Cody Ford
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
DraftingCheck
0 1"
Bar is one inch onoriginal size sheet
DesignCheck
IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
N
1 TANK SITE PLANSCALE: 1" = 30'
GENERAL SITE AND GRADING PLAN
C001 3
C. FORD J. CAMPBELL
J. MERINO L. BENNETT
AS SHOWN
0 45'15' 30'
SCALE 1"=30' AT ORIGINAL SIZE
BENCHMARKSPOINT NUMBER NORTHING EASTING ELEVATION DESCRIPTION
BM-GPS1 6949977.96 11781110.10 278.84 GPS FLY/SET ROD AND CAP
BM-GPS2 6949711.70 11780666.47 284.98 GPS FLY/SET ROD AND CAP
CTF
284.98BM-GPS2
WATER TANK
WVFH
WVWV
ACCESSPERSON DOOR
CONSERVATION AREA200102090013539
N/A MATTHEW R. & LISA A. MOORE INST.200310280199090
GPIN 7895-00-5959
CONSERVATION AREA200102090013539
CONSERVATION AREA200102090013539
STORM DRAIN EASEMENT
DB: 2558 PG: 40
GUARDRAIL EASEMENTDB: 2558 PG: 40
WATER STORAGE TANK & UTILITY EASEMENTDB: 2651 PG: 487
EROSION AREAOF CONCERN
INSTALL NEW DITCH/BERM TO KEEPFLOW OUTSIDE OF TANK FENCE
REDIRECT EXISTING DITCH TO NEWDITCH/BERM OUTSIDE OF TANK FECNCE
XX
DITCHBERM
FENCE
3:1
FABRIC WRAPPED RIP RAP - 6 INCH DEPTH
1' WIDE
3:1
APPROXIMATEEXISTING GRADE
This document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:15 May 2019 - 11:01 AM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Civil\11193456 - C002.dwg
ANSI D
Date
Plotted By: Cody Ford
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
DraftingCheck
0 1"
Bar is one inch onoriginal size sheet
DesignCheck
IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
EROSION AND SEDIMENT CONTROL PLAN
C002 4
T. DAHMER J. WETZEL
J. MERINO L. BENNETT
AS NOTED
N
SITE PLANSCALE: 1" = 20'
1. DITCH SIDE SLOPES 3:1
2. MINIMUM DITCH DEPTH FROM TOP OF BERM IS 18"
3. LINE WITH RIP-RAP AND GEOTEXTILE PER SPECIFICATION 312216
4. FLARE OUT AT WESTERN END BEFORE WOODED SLOPE
DITCH/BERM DETAILSCALE: NTS
0 30'10' 20'
SCALE 1"=20' AT ORIGINAL SIZE
TD
WATER STORAGE TANKFLOOR PLAN AND SECTION
S001 5
C. FORD J. CAMPBELL
J. MERINO L. BENNETT
AS SHOWN
SHA
SECTIONSCALE: 3/32"=1'-0"
1 FLOOR PLANSCALE: 3/32"=1'-0"
This document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:15 May 2019 - 11:02 AM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Struc\11193456-S001.dwg
ANSI D
Date
Plotted By: Cody Ford
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
DraftingCheck
0 1"
Bar is one inch onoriginal size sheet
DesignCheck
IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
N
30'-0
"
A
S001
REPLACE EXISTING LADDERCLIMB SYSTEM WITH NEWCABLE CLIMB (TYP FOR ALLLADDERS AT ENTIRE FACILITY)(REFER SPEC 05 50 00)
1. REFER TO SPECIFICATION SECTION 03 55 00 FOR CONCRETE REPAIRS.
2. REPAIR CRACKS AROUND FOUNDATION RING WALL AND COAT SURFACE PERSPECIFICATION 03 35 00.
3. GROUT AND SEAL SHRINKAGE CRACKS IN CONCRETE: GROUT UNDER CHIMEPLATE. REFER TO SPECIFICATION 03 55 00 AND 07 90 00.
REPLACE TOP 15 LADDER RUNGSIN-KIND AT WET ACCESS LADDER
REPAIR LOCALIZED SPALLSON CONC FOUNDATION WALL:SEE NOTE 1.
RUN ANTENNA CABLES UP FLUTEBETWEEN LADDER RUNS
INSTALL CABLE SUPPORT BRACKETS @ 10' OC VERT:3
8 x 3" x LENGTH AS REQD TO SPAN FLUTE: FILLETWELD TO INSIDE FACE OF FLUTE
ATTACH ANTENNA CABLES TOOUTSIDE FACE OF CATWALKGUARDRAIL AS REQD
RUN CABLES UP TO ACCESS TUBEBRACKETS: REFER DETAILS DWG S002
ANTENNA CABLES
INSTALL ANTENNA CABLES INSUPPORT BRACKETS (SEE DWG S002)
(WITH CATWALK AND ACCESS TUBE SHOWN FOR CLARITY)
0
SCALE 3/32"=1'-0" AT ORIGINAL SIZE
16'-0"12'-0"8'-0"4'-0"
4
S002CABLES ACCESS OPNG(LOCATE 3'+/- ABOVE GRADE)
4
S002CABLES ACCESS OPNG(LOCATE 3'+/- ABOVE GRADE)
COM
MON
WEALTH OF V I RGIN
IA
PR
OF E S S I ONAL ENG I N
EER
SEAN H. ANDERSON
Lic. No. 060255
1'-0"
1'-0"
1'-0"
3'-0"
1'-4"
1"Ø SCH 40 PIPE:CENTER ON POSTS (TYP)
2"Ø SCH 40 PIPE
TYP1/8
MACHINE KNURLEDSURFACE FOR SLIPRESISTANCE (TYP)
STEEL PLATETYP3/16
1. BEVEL BOTTOM OF POSTS AS REQUIRED TO ENSURE GRABRAIL IS VERTICAL.
2. FIELD LOCATE GRABRAIL FOR OPTIMUM USER ACCESSIBILITY WITHOUTINTERFERING WITH OPENING OF HATCH OR ADJACENT VENTS/HATCHES.
SEE NOTE 1.
(INSIDE)
38" PL w/ (6)- HOLES FOR
CONDUIT ACCESS
38" CARBON
STEEL COLLAR
2'-8"
2'-8" (FIELD VERIFY)
41 2"7"
2"
412" 3" 5" 3" 5" 3" 81
2"
7"11
1 2"
412"3"5"3"5"3"81
2"
R0'-3"
1"
1"
(8)- 12"Ø BOLTS TOSECURE COVER PLATE
16-GAGE CARBON STEELSOLID COVER PLATE: BOLTTO CONDUIT ACCESS PLATE
2" FLANGEALL AROUND
CUT WALL TOREQUIRED SIZE TOACCEPT COLLAR
(SOLID COVER PLATE NOT SHOWN FOR CLARITY)
ADJUST EDGE DIM ASNECESSARY TO FITACTUAL FLUTE SIZE(TYP)
3/16
1. LOCATE SUPPORT APPROXIMATELY 6" ABOVE EACH MEASUREMENT POINT.
2. REFER ELECTRICAL DRAWINGS FOR PROBE LOCATION.
NOTE
1.
MEASUREMENT POINT
PROBE (38"Ø)
A36 STEEL L2x2x1/4
6"
FACE OFACCESS TUBE
14"Ø SS U-BOLT w/ SSNUT EA SIDE: 12" I.D.
WATER STORAGE TANKROOF PLAN AND DETAILS
S002 6
S. ANDERSON J. CAMPBELL
J. MERINO L. BENNETT
AS SHOWN
SHAThis document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:17 May 2019 - 4:50 PM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Struc\11193456-S002.dwg
ANSI D
Date
Plotted By: Sean Anderson
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
DraftingCheck
0 1"
Bar is one inch onoriginal size sheet
DesignCheck
IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
N
1 ROOF PLANSCALE: 3/32"=1'-0"
1
S002
GRABRAIL: SEE DETAILTHIS SHEET (TYP OF 2)
MODIFICATIONS AT ACCESS TUBE LIDSCALE: 3/4"=1'-0"
N
0 2'-0"
SCALE 3/4"=1'-0" AT ORIGINAL SIZE
1'-0"
0
SCALE 3/32"=1'-0" AT ORIGINAL SIZE
16'-0"12'-0"8'-0"4'-0"
(5)- 3"Ø CORED HOLES w/ 3"Ø HEAVYDUTY THREADED FLANGE:PROVIDE 3" MALE THREADEDCARBON STEEL CAP FOR EACH HOLE
PROVIDE 3" CLEAR SPACEBETWEEN EACH OPNG (TYP)
2" CLEAR(TYP)
TYP GRABRAIL AT MANHOLESCALE: 3/4"=1'-0"
GRABRAIL: SEE DETAILTHIS SHEET
ACCESS TUBE
SEE NOTE 1.
1. CUT/GRIND OFF EXIST 2"Ø CABLE PORTS AND INSTALL 14" x 4"
CRESCENT-SHAPED STEEL COVER PLATE AS SHOWN. ALTERNATELY,CONTRACTOR MAY INSTALL 1
4" x 4" Ø COVER PLATE OVER EACH HOLE.SEAL WELD TO TOP OF ACCESS TUBE.
2. REMOVE ALL EXISTING SAFETY CLIMB DEVICES FROM ALL LADDERS ATFACILITY AND INSTALL NEW SAFETY CLIMB PER SECTION 05 50 00.
NEW SAFE CABLE CLIMB DEVICEINSTALLED ON LADDER (SEE NOTE
2.)
NEW CABLE BRACKET PER DETAIL THIS SHEET
CABLE SUPPORT BRACKETSCALE: 3/4"=1'-0"
N
1. INSTALL CABLE SUPPORT BRACKET AS CLOSE ASPOSSIBLE TO EXISTNG BRACKET. FILLET WELDALL AROUND TO ACCESS TUBE.
NEW 3 8" x 3" CABLE BRACKET(SEE NOTE 1.)
SAFE CLIMB DEVICE
18"
4" TALL LEGS
CABLE/CONDUIT ACCESS OPNG IN FLUTED WALLSCALE: 1"=1'-0"
COM
MON
WEALTH OF V I RGIN
IA
PRO
F E S S I ONAL ENG I NEER
SEAN H. ANDERSON
Lic. No. 060255
0 18"6" 12"
SCALE 1"=1'-0" AT ORIGINAL SIZE
PROBE SUPPORT BRACKETNOT TO SCALE
5'-6"
WATER STORAGE TANK PLANS AND SECTION
M001 7
C. FORD J. CAMPBELL
J. MERINO L. BENNETT
AS SHOWN
CTF
N
0
SCALE 3/32"=1'-0" AT ORIGINAL SIZE
16'-0"12'-0"8'-0"4'-0"
SECTIONSCALE: 3/32"=1'-0"
1 FLOOR PLANSCALE: 3/32"=1'-0" 2 ROOF PLAN
SCALE: 3/32"=1'-0"
1. INSTALL STAINLESS STEEL CABLE FALL PROTECTION SYSTEM ON ALL LADDERS REFER TO SPECIFICATION 05 50 00.
2. SEE DWG S002 FOR MANWAY HATCH INSTALLATION.
3. REPLACE ALL EXISTING HARDWARE. HARDWARE SHALL BE COMPATIBLE WITH OWNER'S STANDARD CYLINDER AND KEYED TO THEOWNER'S STANDARD KEY. REFER TO SPECIFICATION 08 41 00 FINISH HARDWARE FOR ACCESS PERSON DOOR HARDWAREREPLACEMENT
4. APPLY ANTI-GRAFFITI COATING ON FIRST 10 FEET OF TANK EXTERIOR COLUMN.
5. CONTRACTOR SHALL FIELD COORDINATE PLACEMENT OF HYDRODYNAMIC MIXING SYSTEM AS TO NOT CONFLICT WITH OTHER TANKCOMPONENTS. SEE SPECIFICATION 46 40 00.
A
M001
This document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:15 May 2019 - 11:01 AM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Mech\11193456-M001.dwg
ANSI D
Date
Plotted By: Cody Ford
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
DraftingCheck
0 1"
Bar is one inch onoriginal size sheet
DesignCheck
IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
N
30'
100'
78'
78'
R50'
R39'
A
M001
TIDEFLEX CHECK VALVE
190'-
6"±
SEE
NOTE
13
GRADE SURROUNDING SOIL TO 3"BELOW TOP OF EXPOSEDCONCRETE BASE AND SLOPEAWAY AND RESTORE (TYP)
SEE
NOTE
13
CONDENSATE CEILING TO BESPRAY FOAM INSULATED
NOMINAL 2" THICKNESS
40' H
EAD
RANG
E
INTERIOR CONCRETE FLOOR COATINGTO BE APPLIED IN ACCORDANCE WITHSPECIFICATION SECTION 09 85 20
NEW SPRAY FOAM INSULATIONAT NOMINAL 2" THICKNESS
OSV CHECK VALVE1
M002
HYDRODYNAMIC MIXINGSYSTEM - SEE NOTE 5
2
M002
DRAIN4
M002
EL 285.83
4" SS, DRNWELD DRAIN PIPE
TO OVERLOW PIPE
INSULATION DETAIL3
M002
UNIT HEATER5
M002
UNIT HEATER5
M002
WATER STORAGE TANK DETAILS
M002 8
C. FORD J. CAMPBELL
J. MERINO L. BENNETT
NTS
CTF
OSV CHECK VALVESCALE: NTS
This document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:15 May 2019 - 11:01 AM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Mech\11193456-M002.dwg
ANSI D
Date
Plotted By: Cody Ford
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
DraftingCheck
0 1"
Bar is one inch onoriginal size sheet
DesignCheck
IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
B
TIDEFLEX SERIES 37CHECK VALVE
EXISTING PIPE
WELD FLANGE TOEXISTING PIPE
EXISTING PIPE
WELD FLANGE TOEXISTING PIPE
D
F
D
E
C
DIMENSIONSA B C (MIN) D E F
8" 37-1/4" 10" 7-7/8" 10-1/2" 1/2"
10" 54" 12" 9-7/8" 15-1/2" 1/2"
12" 57-1/4" 14" 11-7/8" 18-1/2" 1/2"
A
HYDRODYNAMIC MIXING SYSTEMSCALE: NTS
INSULATION DETAILSCALE: NTS
SPRAY FOAM AT 2"NOMINAL THICKNESS
SPRAY FOAM INTO FLUTES INORDER TO SEAL AIR GAPBETWEEN EXTERIOR WALLSAND CONDENSATE CEILING
MIXER
SUPPORT LEGSAND FEET
DRAINSCALE: NTS
4" TREADED PLUG
4" COUPLER
4" A36 PIPE
T-HANDLE CONSTRUCTED OF 1" SOLID ROUND BAR
EXISTING TANK BOTTOM
EXISTING 12"OVERFLOW PIPE
1/4
1/4
1/4
1/4EXISTINGEXTERIOR WALL
EXISTING CONDENSATE CEILING
MANUFACTURER SUPPLIEDOR FIELD FABRICATED
WALL MOUNTING BRACKET
EXTERIOR WALL ORSTRUCTURAL MEMBER
ELECTRIC UNIT HEATERMOUNTED AT 8' ABOVE FINISHED
FLOOR HEIGHT
UNIT HEATERSCALE: NTS
MOUNTING BRACKET WELDEDTO STRUCTURAL STEEL
CB CB DESCRIPTIONNOTESLOADCKTCKT
LOCATION:
CONDUITSIZE
ɸ/NSIZE
GSIZELOADNOTESDESCRIPTION CONDUIT
SIZEɸ/NSIZE
GSIZE
LOCATION:
TVSS/SURGE PROTECTION:
ENCLOSURE:
INCOMING FEED:
ESTIMATED CONNECTED LOAD:
FED FROM:
MAIN BREAKER TRIP:
MAIN BUS RATING:MINIMUM SHORT-CIRCUIT
INTERRUPTION RATING:
NOTES: SEE PANELBOARD SCHEDULE NOTES
2624222018161412108642
252321191715131197531
A B
EXISTNG PANEL LPAWATER STORAGE TANK
240/120V, 1P, 3W
XXXXX
200 AT
XXXXX
XXXXX
XXXXX
XXXXX
XXXXX
TEMP. INDICATING TRANSMITTER (TIT-1) 3/4" 12 12 20A/1P20A/1P 3/4" 12 12 1/2 HP SUBMERSIBLE HYDRODYNAMIC MIXER
HEATER 5KW 3/4" 10 10 30A/2P30A/2P 3/4" 10 10 5KW HEATER
WATER STORAGE TANK PLANS, SECTION, AND DETAILS
E001 9
D. CLELAND J. CAMPBELL
J. MERINO L. BENNETT
AS SHOWN
DNC
0
SCALE 3/32"=1'-0" AT ORIGINAL SIZE
16'-0"12'-0"8'-0"4'-0"
This document shall not be used forconstruction unless signed and sealed forconstruction. Sheet No.
Original Size
Title
Project
ClientDesignerDrawn
Scale
Plot Date: Filename:16 May 2019 - 11:32 AM N:\US\Chantilly\Projects\111\11193456 PWCSA TO32 Manassas SS WST Rehab\CADD\Drawings\Elec\11193456-E001.dwg
ANSI D
Date
Plotted By: Don Cleland
Project No.
Sheet of
Reuse of DocumentsThis document and the ideas and designs incorporatedherein, as an instrument of professional service, is theproperty of GHD and shall not be reused in whole or in partfor any other project without GHD's written authorization.© 2019 GHD
DraftingCheck
0 1"
Bar is one inch onoriginal size sheet
DesignCheck
IssueNo. Drawn Approved Date
ProjectManager
PRINCE WILLIAM COUNTY SERVICE AUTHORITY, VAMANASSAS SOUTHSIDE WATER STORAGE TANK REHAB
11193456
9
L. BENNETT 05/2019GHD Inc.16701 Melford Boulevard, Suite 330Bowie MD 20715 USAT 1 240 206 6810 F 1 240 206 6811 W www.ghd.com
0 FOR BID LSB 05/2019
4-#16 TSP, 3/4" PVC COATEDRGS CONDUIT TO NEWANALOG INPUT (AI) CARD INEXISTING MODICON M340PLC CABINET
TIT1
TEMPERATUREINDICATING
TRANSMITTER 1(TIT-1)
3-
TEMPERATURE PROBESCALE: NTS
AM001
SECTIONSCALE: 3/32"=1'-0"
1 FLOOR PLANSCALE: 3/32"=1'-0"
N
30'
100'
78'
78'
AE001
40'-0
" HEA
D RA
NGE
5'-0"
10'
10'
10'
TE4
TE3
TE2
TE1
TEMPERATURE SENSOR (TYP)
TIT1
1E001
TEMPERATURE PROBE ROD
NOTES:
1. REPLACE EXISTING 150W INCANDESCENT LIGHT BULBS IN EXISTING FIXTURES WITH 150W LEDEQUIVALENT. NINE (9) BULBS PLUS (2) TWO SPARES.
2. INSTALL CABLE MOUNTING BRACKETS FOR PAX MIXER INSTALLATION, PER MANUFACTURERRECOMMENDATIONS.
3. TEMPERATURE TRANSMITTER 1 (TT-1), TEMPERATURE INDICATING TRANSMITTER (TIT-1) ANDMIXER CP TO BE MOUNTED USING STAINLESS STEEL STRUT AND HARDWARE.
4. UTILIZE EXISTING PANEL TO FEED NEW EQUIPMENT, REFER TO LPA SCHEDULE FOR BREAKERSTO BE ADDED.
5. EXISTING PLC CABINET TO BE UTILIZED TO FOR TEMPERATURE SIGNALS. CONTRACTOR TOINSTALL CABLE AND CONDUIT TO PLC CABINET FOR TERMINATION AND PROGRAMING BYOWNER.
6. TEMPERATURE TRANSMITTER (TT-1) TO BE INSTALLED A MINIMUM OF 12" ABOVE TOP OFOVERFLOW PIPE OPENING.
7. MANUAL MOTOR STARTER (MMS) TO BE SQUARE D CLASS 2510 WITH RED PILOT LIGHT IN A NEMA 4X WATERTIGHT ENCLOSURE. SWITCH SHALL BE ABLE TO BE MAINTAINED IN 'ON' POSITION TO ALLOW FOR THE MIXER TO BE STARTED AND STOPPED FROM THE CONTROL PANEL LOCATED ON THE GROUND LEVEL.
8. COORDINATE WITH STRUCTURAL DRAWINGS FOR PROBE MOUNTING REQUIREMENTS.
9. ALL CONDUIT TO BE INSTALLED USING STAINLESS STEEL HARDWARE.
TT1
4
XXX.XX
24 VDC POWER SUPPLY
PROGRAMMABLETEMPERATURE TRANSMITTER(BY PROBE MFR.)MOUNTED ON DIN RAIL(TYP)
3 6
53
120 VAC FROM NEW SPAREBREAKER IN EXISTING
PANEL. FEED WITH2 #12, #12 GND, 3/4"
PVC COATED RGS CONDUIT
TT1
TEMPERATURE PROBE
24 VDC TO TT-1 FROM 24VDC POWER SUPPLYFEED WITH:2 #12, #12 GND, 3/4" PVCCOATED RGS CONDUIT
MIXERCP
MMS
2-
MIXER CONDUIT RISER DIAGRAMSCALE: NTS
1/2 HPSUBMERSIBLE
HYDRODYNAMICMIXER
MFR CABLE
4-#16 TSP, 3/4" PVC COATED RGSCONDUIT FROM TEMPERATURE
TRANSMITTER TT-1 TOTEMPERATURE INDICATING
TRANSMITTER TIT-1
SUBMERSIBLEHYDRODYNAMIC
MIXER
EXISTING PANEL LPA
2 #12, #12 GND, 3/4" PVC COATED RGS CONDUIT
2 #12, #12 GND, 3/4" PVC COATED RGS CONDUIT
1-
EXISTING PANEL LPASCALE: NTS
XXX.XX
XXX.XX
XXX.XX
MMS
SUBMERSIBLEHYDRODYNAMIC MIXER
CONTROL PANEL (MIXER CP)
7
1
1
1
1
6-#14, 3/4" PVC COATED RGSCONDUIT TO EXISTING PLCCABINET
UNIT HEATER
UNIT HEATER
LPA-15, 17
LPA-14, 16
7
4
9
3
9
8
9
9