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COST ESTIMATE GUIDELINES AND REFERENCES
How to Avoid Bidding Errors
A. Read thoroughly plans, specifications, and general conditions of
contract, addendums, and invitation to bid. Study carefully the following terms
and conditions.
1. Bid bond – 5% to 10% Cash or manager’s check
2. Time of completion – number of working days or calendar days
3. Performance bond – all risk insurance 10% to 20% of contract.
a. Work Guarantee Bond – 20% to 30% of contract
4. Construction Bond for Residential – Subdivision Requirements
5. City Tax or Contractor’s Tax
6. Contractor’s insurance – Verify approved insurance company
7. Liquidated damages for 1% of 10% of bid
8. Price Escalation/ Time Extension
9. Revisions, changes, extra works
10. Last minute addendums, bid bulletins, time and date of the bid submission
11. Owner-supplied materials
12. Terms of Payments – Check Dpayments
13. Permits
Construction Permits (Architectural, Structural, Plumbing, Mechanical &
Electrical
Occupancy Permits
Demolition & sidewalk Permits
City tax new codes
14. Building Code Requirements/Boundaries
B. Look for confusing requirements or any discrepancies in plans and
specifications. Refer to architect and owner in writing ( black & white)
1
C. Look for notations on plans – general scope of work, changes, alterations,
impossible requirements, Building code requirements
D. Evaluate & study carefully specifications
1. Make list of trades, brand, type that can fulfill the contract
2. Subdivide each trade list if needed
3. Ask quotations from subcontractors
4. Electrical, plumbing and mechanical if required.
Make sure you know the subcontractor suppose to quote on you. Set forms
to avoid gaps and mistakes
E. Set procedures for preparing bids
1. Plan the bid like a project with checklist, target date and project checklist
2. Check if bid required itemized cost breakdown/ unit cost of materials.
F. Check and double check take-off estimate. It might have been
overlooked. Spot check subcontractor proposals if complete. Take note of scope
of works. Verify items not included, unit cost of materials.
G. Site inspections – Verify thoroughly the following conditions.
1. Existing facilities to be demolished – wood, concrete steel.
2. Hauling In/ Out of matls– Disposal of debris. Location. Tools and
Equipment to be Used
3. Sources of Materials – Verify materials unit cost of nearby suppliers. Major
materials from existing supplier and minor materials from new supplier. Verify
terms of payment. Prepare materials checklist. Always check Current Cost
of materials, prepare checklist.
4. Geographical conditions of site. Slopes, verify on plans, if backfilling is
required. Check if adobe, soil of backfill. Note depth of excavation requires.
Hauling in/out of backfilling, Dumping of debris from site.
2
5. Ideal location of bunkhouse, temporary warehouse or storage. Temporary
utilities. Dumping of materials to site must not have conflict with the layout of
proposed building.
6. Sources of manpower, technical expertise, tools and equipment
7. Temporary facilities- power, water, telephone
8. Future tapping of the following:
- Power
- Water
- Telephones
- Sewer and Drainage
Verify if in conformity with the plans. Check utility company
requirements. Project Study. Roads, sidewalks to be demolished.
Permits and payments.Deposits c/o Owner
H. Use the “RULE OF THUMB” method. Check the most contentious items of bid.
Recheck addition of subcontractors.
I. Analyze the bid even if it is not successful. Update cost of materials. Check file
records and other historical data. Get result of bidding and prepare feedback for
future references.
J. Major error in bid. Determine whether or not to continue work on the project.
Determine if you are willing to live with the error. Know the bid of other contractor.
K. Take note of indirect cost, VAT and other government taxes and requirements.
Subdivision requirements, construction bonds, insurance, city tax, performance bond.
L. You may wish to withdraw the bid.
Reminders before Estimating
A. Read first plans, specifications and general conditions of contract to familiarize
yourself with the general scope of works.
3
B. Spot check nebulous requirements if available in local market. Verify if imported,
suppliers, type of materials
C. Rough estimate to try. It must be 30-50% of what might be the ultimate cost.
D. Preliminary estimate. Unit cost obtained from past project. Recheck verify current
unit cost.
E. Always use the rule of thumb in the final estimate
F. RE-check your estimate. Let someone do it. Spot check multiplications and
additions of subtotal
G. Ask for quotations of suppliers or subcontractors of specialty works
H. Use different techniques in estimate
1. By volume method
2. BY area method – sq. m.
3. By direct count
Be systematic. Breakdown estimate or use the area method.
Schedule organized breakdown.
I. Begin estimate with fresh mind. Difficult items first, easy items like addition of total
cost can be done when you are tired
J. Always use your imagination, observation, take note of items lacking or errors in
plans and specifications. Do not leave items. Immediately look for unforeseen
requirements before continuing to other portion.
Estimate Checklist
A. Site Development/General Requirements
1. Mobilization/Temporary facilities
a. Temporary Fence – Total linear meter
Sawali 4’ x 5’ or GI sheets
Coco lumber – 2x3/2x4
C.W. nails
4
Check if corr. GI sheet temp. fence
2. ID / Uniforms/ Biodatas
3. Workers Quarters – Verify number of workers
a. Temporary Field Office
Plywood
2 x 4 lumbers
Roofing G.I. sheets or Lona – 20’ x 40’
Emergency Kit
Drums
Tools and Equipment
b. Temporary Power, Water and Telephone – Cost of utilities during
construction. Contractor or Owner
B.1 Checklist Temporary Power (Residential Only)
Description Qty Unit Unit Cost
RSC pipe ½ x 10’ 1 PieceEntrance Cup ½ 1 PieceRSC Conduit NippleSafety Switch 60 A 2p 1dia 1 SetTHW wire # 12 (5.5 mm²) 1 RollElectric Tape (big) 1 RollOne way switch 2 PieceDuplex Convenience Outlet 2 PieceFluorescent 40 w 2 PieceMeter base 1 Set4 X 4 X 8’ coco lumber or equal
1 Piece
B.2 Temporary Toilet/Waterlines/Sewer
Description Qty Unit Unit Cost
PVC pipe 3” x 10’ 2 PiecesPVC wye 3 x 3 3 PiecesPVC bend 4 PiecesPVC bend 2 PiecesPVC Cement 100 cc 1 Qrt
5
G.I. pipe ½ x 20’ 2 PiecesG.I. tee ½ 4 PiecesG.I. Elbow ½ 4 PiecesTaplon Tape 3 RollsFlush Type Water Closet 1 SetDrums 3 SetWater Hose ¾” x 15 lm
B.3 Checklist of tools and equipment to be used
Concrete Mixer (1 bugger)
Bar Cutter/Circular Cutter or Hacksaw Blade
Shovel
Pick Mattock
Leveling Hose
Bareta/Pointed bar
Angle Grinder
Vibrator
Compactor
Plastic Container
B.4 Manpower Transportation/Cash Advance for Mobilization
B.5 Temporary Bunkhouse for Workers and Storage of Materials
B. Siteworks
1. Demolition of Existing Structure
2. Hauling out/in
Verify the following:
a. Slab, beams, footing, etc.
b. Materials that can be utilized – wood/steel/doors/etc.
c. Hauling out of usable materials and debris (labor+delivery charges)
– location of disposal
d. Storage of usable materials
3. Clearing and Grubbing – 3.00 m around building
6
a. Uprooting of trees and shrubs
b. Soil stripping if required
4. Sheet Piling – Verify adjacent existing structures
a. Near creek, beside high-rise building, etc
b. Piles to be used – Concrete pre-cast, steel or apitong lumber – 2 x
10 x 12’ for property walls
5. Verification of monuments, lot boundaries, slopes and topographical
conditions. Prepare fixed reference above the street level, building
elevations.
- Check if soil test is required for 4 storey buildings up.
6. Excavation
a. Manually
b. By machine – Calculate number of hours required
Verify Soil Conditions
7. Earthfill/Backfilling works
a. Backfill – Excavated portion of footing, wall footing
b. Earthfill
– Slope of existing lot
– Elevations of Proposed finished flooring from
street line or other reference point.
c. Type of filling materials
Description Qty Unit Unit Cost
Soil Cu.m. 150Adobe Cu.m. 200
7
Dump truck Or Ten Wheeler Truck
d. Tamping by Manual or Machine
Formula: LOOSE VOLUME or VL =Length x Width x DepthCompact Volume in Place or VC = VL + 25%
Hauling In of Backfill Materials
*
Depending on the type of Backfill – escombro, soil, and lastillas?
8. Gravel Fill a. 0.05 m thickness below slab on fill and footingb. G.I. gravel or ¾” gravel
TOTAL AREA OF SLAB = Length x Width x .05 m = Total Volume of Gravel Fill
9. Soil Poisoning – For application before pouring of footing and slab
a. Type of Soil Poison – Lentrex/Chlordane or F3D14
10. Polyethylene Sheet under slab on fill – for Ground floor S lab
0.006 Thickness Polyethylene sheet approximately 9 kgs/sq.m. Specially for
narra parquet and vinyl tile floor finish
Reference Checklist: Foundation
Description Qty Unit Unit Cost
Escombro T/L*Banda’y Banda or Lastillas T/L*Garden Soil for landscape/ Ordinary soil
Description Capacity (soil)
Unit Unit Cost
6 wheeler truck 4-6 cu.m T/L10 wheeler or dump truck
12-16 cu.m T/L
Description Capacity (soil)
Unit Unit Cost
6 wheeler truck 4-6 cu.m Per cu.m.10 wheeler or dump
truck12-16 cu.m
8
a. Soil Bearing Capacity
1,500 – 2,000 psf (pounds per sq. ft.) Most commonly used
assumptions at city engineer’s office
3,000 to 4,000 psf
- if adobe or hard soil depending on soil test done by
geotechnical Engineers
b. Soil Test – For high rise building (Boring Test)
Cost P15,000 – P20,000.00 per hole depending on the
requirement of structural engineer
c. Seismic Analysis if required
11. Other Outside Building Development Checklist
a. Fence – Verify height and total length
b. Special Fence for Slope Area – shear wall with perforated
pipes ( verify detail)
c. Concrete curb and gutter, roads, walk, sidewalk
d. Parking Area
e. Rip rapping if required
f. Water Tank/Genset Rooms/other base foundations
g. Landscaping
Note: Provide during construction permanent benchmark for elevation references.
C. Concreting Works
Checklist – check strength required
2,500 psi slab on fill
3,500psi to 4000 psi for footing/ column/beam/slab/residential for high rise
building
1. Manual or concrete mixer – Actual Site conditions if 2 – storey building
2. Ready Mixed Concrete – for high rise building
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a. Interval of Delivery of Truck - 30 to 45 minutes
b. Capacity of One truck – 4 to 6 cu. mts.
c. Retarder or additives fast curing if required
d. Verification of scaffolding work before pouring-safety precautions
e. Dumping of excess cement if necessary
f. Emergency Scaffolding/tools and equipment
Checklist of Concrete Works for Estimate
a. Footing, wall footing, footing tie beam
b. Columns per floor schedule
c. Last Floor to roof or deck
d. Shear Walls
e. Concrete stairs
f. Floor Beams and Girder – per floor
g. Suspended slab
h. Parapet walls and canopy
i. Elevator shaft
j. Slab on fill (includes driveways and walks
k. Cistern Tank and Septic tank
l. Kitchen and Lavatory counter
m. Lintel beam for doors and windows
n. Electrical and Plumbing lines embedded in concrete, pullboxes
and catch basins
o. Concrete Curb and gutter
p. Fence/electric post
q. Others as per plan
10
- Computations shall be scheduled systematically to
above items not included in the estimate. Itemized per
floor
-
Volume = Length x Width x Depth
Note : To include all portion below natural grade line (footing, column, walls, etc..
depth)
Estimate References for Concrete Works
Ratio : 1 part cement
2 part sand
3-part gravel
Compressive Strength of Concrete = Fc’ Psi- Pounds per square inch
Class Fc’@28 days Ratio Cement Sand GravelAAA 4000 psi (281 kgs/sq.cm) -
ready mixed concrete1:2:3 11 bags .40 m 3 .40 m 3
AA 3,500 psi (special) 1:2:4 ½ 10 bags .41 m 3 .82 m 3
A 3000 psi(regular –211 kgs/sq.cm.)
1:2:4 9 bags .42 m 3 .84 m 3
B 2,500 psi (176 kgs/sq.cm) 1:2 ½:5 8 bags .44 m 3 .87 m 3
For estimate use .50 m 3 1.0 m 3
Example :
3,000 psi = Total Volume ( Concrete per computations) = 35 cu.mCement = 35.00 m3 x 9.0 m3 = 315 = 315 bags
Sand = 35.00 m3 x .42 m3 = 14.7 = 15 m3
Gravel = 35.00 m3 x .84 m3 = 29.40 = 29.40 m3
Note: Use only Local Brand Cement – Portland cement
11
Brand : Dragon, Northern Cement, and Island Cement
Get one (1) concrete sample for every 10.00 cu. mts. of concrete during
pouring of concrete on 12” concrete cylinder for testing of strength as required
for occupancy permit.
Capacity of Truck
1 bag of cement = 1 cubic foot
Note: pump cute interval of delivery of concrete every 30 min. capacity of truck 4 – 6.00m³
Cement
Gravel/ Sand
S-1 - for
concreting worksWhite Sand - for plastering/topping
Concrete Mixed
For one bag of Cement = 40 kgs
(weight)
Gravel
G – 1 ¾ “ to 1 ½” gravel for foundations
Slab on fill
¾ gravel – 3/8 to 3/14” for all structural members
verify if crushed gravel or washed gravel
D. Formworks
1. Estimate form lumber using 2x3/2x4/2x6 coco lumber per total volume of
concrete to be used. Estimate first total concrete volume as per guidelines.
Description Capacity (bags) Cost6 wheeler truck 100-200 bags10 wheeler or dump truck 500 bags
Description Capacity Unit Cost6 wheeler truck 2-4 m310 wheeler or dump truck 12-14 m3
12
Coco lumber supplier – to order coconut bark, avoid lumber at center
2 x 3 / 2 x 4 - for vertical lateral ties and braces
2 x 6 - for beam support and footing
cost of coco lumber 12.5 to15.50 per bd. Ft.(jan ’06)
2. Normal coco lumber requirements
150 board feet per cubic meter of concrete
1 truckload of coco lumber – Elf, -1,800 to 2,500 bd. Ft.
Ten-wheeler -4,000 to 5,000 bd. Ft.
Cost of cocol umber 6.50 to 7.50 per board foot
3. Assorted C.W. Nails
C.W. nails 1 ½ “C.W. nails 2”C.W. nails 3”C.W. nails 4”
For scaffoldings
Commercial Sizes
1 box = 20-25 kgs (small)
1 box = 30-38 kgs ( large)
Estimate Guide : 1 kilo per 50 board foot or lumber
QTY = Total board foot / 50 = N o s. of kilos / 25 = No. of
box
50 bd. Ft. 25 or 38 kgs/box
4. Concrete Nails – 3 “ & 4” for CHB filing guide, concrete walls ceiling joist
and cabinet frames. Quantity depends on the actual requirements
NAILS CHART
CW Nails Pieces per kilo Usage2D 1” 1,680 pcs Forms Plywood
13
4D 1 ½” 705 pcs Forms plywood6D 2” 380 pcs T & G flooring8D 2 ½” 260 pcs Ceiling joist10 D 3” 120 pcs Trusses/Rafters20 D 4” 55 pcs Floor Joist
Finishing nailsSize Usage1” ceiling1 ½ “ T & G flooring2” Cabinet frames
5. PLYWOOD - Use 3/8” to ½” plywood. Normal market/commercialize of ¼ is too thin
Solve for Contact Surfaces. Columns/Beams/slabs as per plan. See checklist for concrete works.
Column Example: 4 sides or Perimeter(.20 + .20 + .40 + .40) x height = sq.m.
Beam Example 3 sides(.15 + .40 + .15) x height = sq.m.
Slab = Length x Width = Sq.m.
Summarize all required formworks
Total Contact Surface in Sq. Mts. = Nos. of Pieces 2.88 or 1.20 x 2.42 Plywood Size of Plywood
Required Note : Check if you can use it again if building is large. Small buildings assume as per estimate. Formoil – Normally to use USED oil – Quantity approximate; 1 ltr. per 15 sq. mts.
If steel scaffolding is to be used check rental per day of steel accessories. Verify to supplier.
Note : For residential, use good lumber for scaffolding, to be used later for rafters, purlins, ceiling joist, etc.
E. Steel Reinforcement/BarsSteel forms – rental per piece /day. As per plan
14
REBARS DESIGNATIONAmerican Society for
Testing Materials (ASTM)
Philippine Standard
Yield Point Strength
Tensile Strength
Usage
Kgs/ mm2
Psi Kgs/ mm2
Psi
Structural Grade
Grade 230
24.452 33,000 39.77 55,000 For residential only
Intermediate Grade (Grade 40)
Grade 275
28.042 40,000 48.95 70,000 Depend on structural design
Grade 60 Grade 410
41.80 60,000 63.22 90,000 For high-rise building
Standard Length of BarsFeet Meter Most commonly used available in hardware
6.00m20’ 6.00 m Special Length, per order to supplier26’ 7.50 m30’ 9.00 m35’ 10.50 m40’ 12.00 m
20’ (6.00m) – 9mmd, 10mmd, 12mmd20’ and above – 16mmd, 20mmd, 25mmd
Commercial Sizes of Rebars
Nominal Diameters(metric)
Designation(English)
Unit weight per meter(Kilos per
meter)
Cross Sectional area
insq
Inch8 mm Substandard
Commercial Sizes9 mm (2.3 kgs)
15
10 mm (standard) 3/8 # 3 0.616 0.1112 mm (standard) ½ # 4 0.888 0.1216 mm (standard) 5/8 # 5 1.579 0.3120 mm (standard) ¾ # 6 2.466 0.4425 mm (standard) 1” # 8 3.854 0.7928 mm (standard) 1 1/8 # 9 4.83332 mm (standard) 1 ¼ # 10 6.313
Example:
20 pcs – 16 mm dia. X 6.00 bars20 x 1.576 x 6.0 = 189.46 kgs.
To get quantity of G.I. wire # 16
a. G.I. wire # 16, through use of Concrete Volume
2 kilograms per cu. m. of concrete = NO. OF ROLLS25 – 30 kilos per roll (Check commercial weight to supplier)
b. Estimate thru Rebars
20 kilos of G.I. wire per metric tons1 metric ton = 10,000 kilos1 kilo of wire = + 53 linear meter1 roll = 35-40 kilograms
or current commercial kilos per roll = 38 kgs/roll
c. G.I. wires for CHB walls4” chb - 10” length of tie wires5” or 6 “chb - 12” length of tie wiresSpacing of rebars
Vertical @ 0.60 m. o.c.Horizontal every third layer
GI wires Kilos per sq. mts – 0.04
Example : Total Area of CHB walls – 230 m2 x 0.04 = 9.2 kilos, or 10 kilos of G.I. wire # 16
d. Welding Rodse. Rust Proofingf. Post Tensioning – per plan special Construction, quotation per suppliers
Rebars substitution
Say 12-16 Ø To 20 mm Ø
Reinforcement/Rebars DataHow to Determine Bar Splicing LengthType Minimum Splice Length1. Tension Bars 25 x bar size +150 mm
16
2. Compression Bars 20 x bar size + 150 mm
Example : Column 20 mm = 20 x 20 mm + 150 mm
Compression = 550 mm or .55 m
NO FOOTING SHALL REST ON FILLING MATERIALS“Y” – spacing of bars 1 @ 0.05 2 @ 0.10
3 @ 0.15 rest @ 0.20 m on center
F. Masonry WorksEstimating CHB walls
4” chb – interior chb partition6” chb – exterior chb partition for buildings5” chb – exterior chb partition for residential
Example :
A1 = L X H= SQ. M. GROSS AREA
A-1 LESS (A-2+ A-3)= SQ. M. NET AREA
A-1 = 3.0 X 4.0= 12.0 SQ.M
A-2 = 1.60 X 1.20 Take note of portion below grade line
= 1.68A-3 = 0.80 X 2.10 = 1.92
A-2 + A-3 = 3.60
17
A-1 LESS (A-2 + A-3) = 12.00- 3.60 = 8.40 SQ. M. = NET TOTAL AREA
FORMULAS1 cubic foot 0.0285 cu. mts1 cubic meters 35.28 cu. Feet1 bag of cement 1 cu. Foot
1. CHB FillerRatio 1: 3 or 1 part cement to 3 parts sand
Cement Sand4 “ chb 25 pcs. Per bag 0.0855 m3 per bag
cement6 ” chb 20 pieces per bag
Example:2,200 pcs. 4” chb = 88 bags cement-----------------------
25
88 bags x 0.0855 = 7.52: say 8.00 cu. mts. sand
2. CHB PlasteringRatio 1: 2 or 1 part cement to 2 part sand
Cement½ - ¾ “ thk plastering
0.50 bags per sq. m.
Sand 0.057 cu. mts per bag
Example:Say, 200 sq. m x 2: both face
--------------------------------0.50
= 200 bags cement
200 x 0.057 = 11.4 says, 12 cu.m.
3. CHB Type/ Strength
NLB or non load bearing 400-500 psi Available in local market
LB or Load Bearing (Jackbuilt), etc. 700-1000 psi Locally available special
chb
18
Note : Verify delivery cost within Metro Manila or outside Metro Manila
4. Floor Topping
Mortar Per cu.m . Volume Sand UsageClass A 1:2* 16 bags/cu.m. 0.80 cu.m. For topping,
finishing works, tiles,
etc.Class B 1:3** 12 bags/ cu.m. 0.89 cu.m For topping
over slab to level flooring after pouring
*1:2 Ratio 1 part cement for every 2 part sand** 1:3 Ratio 1 part cement for every 3 part sand
5. Rebars for CHB
4” chb 10 mm diameter at every 3rd layer horizontal bars10 mm diameter at 0.80 m vertical bars
6” chb 12 mm diameter at every third layer horizontal bars12 mm diameter at 0.80 m. vertical bars
Assume : 4.25 LM per sq.m. of chbSay : 210 sq.m. x 4.25 lm
= 892.50 LM---------------------------
6.00 m: standard length of bars= 148.75 pieces, say 150 pieces – 10 mm dia.x 6.0 m def bars
6. G.I. wire Masonry works Ga # 16
Tie Wire 10” to 12“ length. Included in rebars wire computation (see checklist)
7. Firewalls/ Toilets. Floor Toppinga. Requirement for waterproofing
Sahara Compound – 1 pack per bag of cement for plastering of firewalls
b. Plaster Board –. Assume 5 sq. meters per gallons for floor topping
G. Steel Trusses. Verify details as per plan.1. Type of trusses
Steel trussesOpen Web Rigid Frame Built Up
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2. Checklist for Estimate per Plan. Always verify if roof framing is correct/ economical. Angular Bars
Top and bottom chordsWeb MembersCross BracingTurnbucklesBaseplate (Thickness)Bolts and nutsSag rodHanger or support for ceiling with boltsWelding rodOxygen AcetyleneC Purlins 2 x 4/ 2 x 6 1.5 mm thicknessAngular bars for fascia board connection
* Preferable to get quotation from qualified subcontractor
Wooden Trusses. Checklist per plan
1.Top Chord/ Bottom Chord
2.Web Members/ Collar Plate/ Struts
3.Wood Plate
4.Girters
5.Fascia Board – Tanguile KD S4S
6.Wood Braces
7.Purlins
8.Machine Bolts, nuts and washers
9.Eaves ventilation – wood slots with US Aluminum Screen
10. Tension Rod and Sag Rods
11. Special Trusses – Fabricated for Low Cost Gang nail/Others
To get board foot of lumber
Example:
1 pc 2 x 3 x 16 2 x 3 x 1612
1 pc 8 bf/pc8 bf
20
5 pcs 2 x 5 x 14 2 x 5 x 1412
11.66 bf x 6 pcs58.33 bf
6 pcs 1 ½ x 2 x 14 1.5 x 2 x 1412
3.50 bf / pc x 6 pcs21 bf
Conversion FactorsCu.ft x 0.02832 Cu. mts.Bf ft. x 0.0833 Cu. ft.Cu. mts x 35.314 Cu. ft.Cu. ft x 2.8317 x 10-2 Cu. mts.
H. Roofing Works
1. Ordinary Corrugated GI sheet Ga.# 16
Standard Market Sizes Width Standard Length
Corr. GI sheet Ga # 26 x 32” Standard 7 feet-do- 8 feet-do- 9 feet-do- 10 feet-do- 12 feet
0.30 meters – standard overlap
1 1 . 5 0 0.70 side lapped 2 ½ “
or 2 corr.
= 16.42, say 17 pcs. X 2 side
= 34 pieces Ga# 26 x 32 x 10’ Corr GI sheet
5.40 m. = 18’ 2 pcs.- 10’ length
2. Plain GI sheet Ga. # 26 x 32” x 8’ standard. Solve for flashing and counter flashing for
firewalls and parapet. Verify actual plan.
3. G.I. gutter Ga. # 26 x 8’ - Standard Gutter
- Special Gutter ( Spanish type)
21
4. Ridge Rolls x 8’
5. Valley gutter. Verify if outside gutter or inside gutter
6. Others per plan. To include fascia board for estimate.
7. Accessories
a. GI roof nails 3 ½ “ - kilos
b. Lead Washer - kilos
c. GI washer ( medium or thick)- kilo
d. GI rivets ¼ x 3/16
e. GI strap Ga # 26
f. Nicolite Bar
g. Muriatic Acid
h. Roof Cement ( Vulcanized)
i. Red Oxide or red lead primer
j. Silicon Sealant
For Color roof – Verify type to be used. Ask for quotation of supplier. Standard Sizes Brochures
Type 1 – Rib type long span ; most common for residential
ChecklistGa. # 26 (Thickness)
Width Length
a. 0.40 mm X 1.040 m X ___ LM Rib Type roofb. 0.40 mm X 0.610 m X 2.44 S type gutterc. 0.40 mm X 0.610 m X 2.44 V type gutter – valleyd. 0.40 mm X 0.610 m X 2.44 Ridge rolle. 0.40 mm x 0.915 m x 2.44 Capping/Flashing
Accessories
a. Tek Screw (Metal Screw) 12 pcs per sq m
b. Blind Rivets
c. Silicon Sealant Per tube
d. Touch Up Paint
e. Vulcaseal – gallon
22
Take note of delivery charge – Around P 2,000.00 – 2,500 per trip, within Metro Manila or
outside Metro Manila
Order roofing one month in advance. Delivery is 2 – 3 weeks after order and payment.
Always estimate as per actual plan.
Formulas
A2 = c2 – b2
B2 = c2 – a2
C2 = a2 + b2
Roofing by area methoda. Determine total flat area required
L x W + pitch factor solve for linear feet requiredRoof pitch Add to total flat area
(Height) meters (Percent)0.32 2%0.40 4%0.45 5%0.50 6%0.55 7%0.60 8%0.70 11%0.80 14%0.90 18%1.00 21%
b. Verify type of roofing as per plan
Tegula – 11.50/m²
Rib type
Banaue type
Others per brochures or specifications
I. Windows as per plan
1. Verify if the window jambs are required
23
2. Checklist on type of windows to be used
K. Jalousie windows 7/32” thk clear or smoked glass
- Verify if operator type
- Jalousies with steel grilles or aluminum
- Grilles with or without design normally grilles shall be
10mm square bar (3/8”) or 12 mm square bars (1/2”)
To compute: L x W= area in m² x 10.76
= area in ft²
Jalousie Windows Specifications
Hoover alloy 6063-T-5 Anodized natural Anodized natural color lever
type operator with 7/32” clear glass 4” blade
StandardNo. of blades
Single controlStandard height
In meters
WidthMinimum of 0.80 m
4 0.3785 0.4666 0.5667 0.6448 0.7339 0.822
10 0.91011 1.0012 1.08013 1.17814 1.26615 1.35516 1.44417 1.53318 1.62219 1.71020 1.80021 1.88822 1.97823 1.060
Note: verify of aluminum screen for windows is included in contract
L. steel casement windows (casement or awning type)
24
1/8” x 7/8” or ¾” T & 2 mild steel section
1/8” thick clear or smoked glass
12mm square bar grilles with or with out design or as specified
aluminum screen if with u frame or detached
A= L x H= area in m² x 10.76= ft²
M. aluminum frame windows (sliding or fixed)
verify if anodized (white), analok (brown) or powder coated
7/32” or ¼” thick glass bronze or clear glass green or blue
weather strip vinyl (mohair)
N. French type windows(wood or steel)
7/32”thick glass
hinges
special
locks and bolts
O. Window casing if required on plans(wood or concrete)
P. Other special type windows(local or imported)
I. Doors and Jambs
A
1. Door jambs –4” – 2” x 6” yakal or quijo
2. Door casings per plan/ mouldings 1x 5 / 1 x 6
3. Wood preservatives –solignum or black coal
4. Flush type doors 1.3/4” thick or height per plan
1. Hollow core ordinary both face
2. Hollow core 1 face marine
25
3. Hollow core both face narra
4. Hollow core with glass for kitchen
5. Narra panel floor solid core 1-3/4” thick per plan
1. Tang. KD panel door solid core 1-3/4 thick per plan
6. 1 ¼” louver door for toilets tang. Kd/aluminum, door.
7. metal louver door for pump room, electrical etc.
8. accordion door
1. metal with or with out plates GA # 14
2. wooden accordion
9. aluminum doors
1. anodized – kawneer finish
2. analok finish
3. with or with out grilles
10. roll-up door
1. metal – manually operated/machine operated
11. sliding doors/windows per design
12. aluminum screen doors
13. metal clad doors
14. special doors for vaults
B. Accessories
1. 3 ½ x 3 ½” loose butt hinges us or local
2. 3” x 3” double action hinges
3. door track and hanger set
4. lockset per specification-local or imported
5. door closer
6. door bumper and stopper
7. master keys for buildings 2 sets
8. barrel bolts
26
9. foot bolts / head bolts
10. padlocks
11. peepholes
12. night-latch / privacy lock for toilets
J. Miscellaneous hardware
1. stair nosing- brass or non slip/ carborandum
2. Washington hinges or hettich hinges piano hinges
3. closet/cabinets, handles and pulls roller catches an magnetic catches
4. finishing nails and concrete nails
5. railing for stairs
K. Thermal and moisture protection
1. vapor barrier – polyethylene sheet 4 width - > 7.8 m²/kgs. 107.8 kgs. Per roll
2. Sahara cement – 1 pack per bag of cement for firewall plastering
3. ceiling insulation (thickness to verify)1 roll = 5’ x 15mts
1. sisalation or aluminum foil
2. fiberglass
3. styropor boards
4. cauling and sealants
5. fireproofing materials
1. elastomeric
2. membrane
3. asphalt (hard) 30kgs. / bags
note : guarantee 5 to 10 yrs
preparation and cleaning of surface before application
L. Carpentry works
27
A. WALLS
a. Vertical & horizontal studs 2x3 / 2x4 S4S
b. Plywood panel - per plan ord. Or narra
c. Baseboards 1x6 with or without design
d. C.W, Nails 2" and finishing nails 1 "
e. Concrete nails 3"I rat proofing PLN GI SHT
1. Ordinary or narra or marine for ext.
2. Danarra 1 tempered lawanit
3. 5-cut KD LBR
4. Wood lattice with design
2.Wooden Post 4"x4" per plan
Post strap - 3116 x 1 1/2x 24"
3. Special Walls - Corkboard
B. CEILING WORKS1. 2x2 Apitong RO or S4S @ 0140 x0.60 / 140 x 140
Ordinary or treated - Wolmanized tanalized
2. 2x3 / 2x4 Runner
3. Hanger 1/2 " PLN Round bar with thread and nuts
4. Concrete Nails
5. Exterior Ceiling
a. 1x1TANGKDWoodSlats
b. 1/4" x 4' Screen wire (welded)
c. 1x2 Frame
6. Ceiling niouldings size Per plan
¼ Ordinary - 1" to 1 112," to 3" special design
7. False beam per design
28
8. T and G or S-cut for ceiling
9. Cover lights ½ " - 1/4 “ plywood
Acrylic diffusers .30 x 1.20 / .60 x 1.20 per plan
10. Special ceiling design
a. Mirror
b. architectural Glass
c. Acoustic board - T runner
C. FLOORING 1. Wood girter and corbel plates
2. Machine bolts with nuts and washer
3. Floor Joist Apitong Ro
4. T and G Flooring
a. Sanding of T & 0
b. Wood Filler and Paints
D. CLOSETS & HANGING CABINETS PER DESIGN
1. Plywood
2. Hardwares - drawer slides / handles / hinges
3. Weldwood glue
4. Hanger rod and bracket
5. Drawer locks / bolt
6. Secret drawer
E. HANGING CABINETS
1. Bar counter per design 2. Kitchen Hanging cabinet
F. WOODeN STAIRS
1. Handrails 3x8 narra or guijo S45 2. Riw
3. Threads
29
4. Balusters
5. Flat bars and screw
G. KITCHEN COUNTERS PER DESIGN
1. Wood / Concrete a. Frame 2x3
b. Plywood 3/4
c. Cabinet louver door
d. Formica top / Adhesives
f. Tiles inside counter white
2. Marble/Granite tiles
a. Countertop 1 b. Splashboard 4" to 6"
A. Area method
1. board ft of studs / m² @ 0.60 m.o.c.b.w.
2. 2 x 3 – 5.38 bf/m²
3. 2 x 4 - 7.30 bf/m²
B. wooden partition
1. 2 x 3 – 9 bf/m²
2. 2 x 4 – 12bf/m²
C. ceiling plywood – joist
1. 2” x 2” @0.60m o.c b.w = 7bf/m²
2. 2” x 2” @ 0.40 m o.c. b.w.=9bf/m²
D. plywood ceiling by sheet method (bf/sheet)
@0.60 B.W. @0.60 & 0.40 @0.402”x2” 12bf/sheet 15bf/sheet 18 bf2”x3” 18bf/sheet 22bf/sheet 27bf2”x4” 24bf/sheet 30bf/sheet 36 bf
E. T & G flooring / V-cut
30
Nos. of T&G/meter run
Bf/m²
1 x 4 12.11 pcs. 13.851 x 6 7.70 pcs. 13.20
F.
G.
H. C. W. nails
Usage Unit Required kilos
Size Kind
Floor joist 1000 bf
10.354”
CWN
Flooring 1000 bf
14.342 ½
f
V/H studs 1000 bf
10.432 ½
CWN
Rafters/Purlins 1000 bf
18.384
CWN
Trusses 1000 bf
7.934
CWN
Facia BD 1000 bf
9.572 ½
CWN
Ceiling joist 1000 bf
16.302 ½
CWN
1000 bf
12.934
f
Plywood ceiling
8 pcs. 1.001
f
Baseboard 1000 bf
6.081 ½
CWN
scaffolding 1000 bf
25.003
CWN
4 CWNI. Bolts
Wooden columns
bolt length L = w + 2(t) – 1”
31
Example: L = 4 + 2 (3 ) – 1”
= 4 + 5
= 9 bolts take note of commercial sizes of lumber
J. Trusses
L = thickness of lumber in layer + 1”
FLOOR JOIST (WASTE FACTOR & BRIDGING CONSIDERED)
Per m² method
Spacing @ 0.30 O.C.2” x 6” 16.10bf/m²2” x 8” 21.33bf/m²
2” x 10” 26.73bf/m²Girter, corbel; plate by direct count
M. Specialty roofing Verify discount for Archt.
A. SHIN YEE METALGA # 0.40 /GA # 0.50mm
1. length maximum or 60 feet
2. width = 30” (760mm)
3. minimum roof 3%
B. accessories
1. gutter with design 0.50 x 0.914x_______
2. ridge roll 0.40mm x 0.577x________
3. ridge wall flushing – 0.40m x 0.577m x 3.30m
4. end flushing
5. End flushing wall
32
6. counter flushings
7. Counter nails
8. blinds rivets 1/8”
9. type 17 – self drilling screw no. 12x2” (50mm)
10. tek screw #10x1/8”
11. wire basket strainer
12. silicon rubber sealant / acrylic paints
C. for walls – spandrel
1. Rib
2. Plain
3. V – spandrel
N. Downspouts, catch basins, manholes, septic tank and cistern tank
A. Downspouts
1. 3” or 4” per plan
2. 1/8” x _______PVC bend
3. ¼ x_______PVC bend
4. PVC coupling
5. epoxy and PVC cement
B. catch basins/ drainage per plan
1. .4” to 10” concrete pipe x1.00 non-reinforced or reinforced
2. perforated PVC pipe for basement walls
3. cement
4. sand
5. gravel
6. steel grating if required – angular bars
C. manholes for electrical or plumbing
*Concreting for embedded electrical and PCBG Lines
O. Finishes
33
A. Walls- exterior and interior
1. plain cement finish
2. tooled finish (plaster)
3. patch on joints
B. synthetic adobe / adobe rubble finish
1. with or without shells
2. with or with out grooves
3. color scheme
C. pebble or boracay washout bohol or ordinary
1. white or ordinary cement
2. size #5, 10, 15
D. anay finish
1. with pebbles
2. fissured finish
E. bricks tiles finish / cal-tiles
F. mactan stone 2x8”
G. marble tiles 4”x8” / 6”x12” etc – Bulacan or Romblon
H. wall tiles 4x8
1. colored or white 4 ¼” x 4 ¼”
2. with or without design 6”x6” / 8” x 8”
3. white cement – 350 pcs/kilo
4. tile adhesive
I. marble ashlar finish 2”x8”
1. flooring per plan
a. plain cement finish or colored red green cement 1:2 5 m² / kilo
b. marble tiles
c. vinyl tiles 1.5mm thick x 1’x 1”
3.6mm thick x 1’x1”
34
Adhesive: gallons per m² x 0.042 = gallons
d. stone inlay finish 2” to 3”
e. wood parquet per design sanding
f. mosaic tile 1” x 1”
g. narra wood planks 1” x 6” to 8” nailers/insulation/c. winnails
h. floor tiles 4” x 8” class a or class b
6” x 6” colored light or dark
i. terrazzo finish or marble chips washout
j. others per design
2. Ceiling Finishes
a. acoustic boards with or without design
aluminum T-runner/if plywood with adhesives
b. 1” x 4” t&g
c. S-cut or v-cut finish 1”x6”
d. Acrytex finish
e. Mirror
f. False beams
3. FLOOR FINISHES verify specs & Plan
4 ¼ tiles – 86 pcs. Per sq. m
white cement – 0.80 kilo/m² or 250 pcs. / kilo
cement – 0.076 bags /m²
cement tiles:
Tiles/m² Cement Bag/m²
SandM³/m²
¾ x 6’” x 6” 45 pcs, 0.3375 0.0191” x 8” x 8” 25 pcs. 0.3400 0.019
1” x 10” x 10” 16 pcs. 0.3400 0.019Vinyl adhesive x gals /m² x 0.042 =
Or 200 pcs. Per gallon =
P. Grille works
35
A. Fence grilles with or with out design
½” to ¾” square bars or 1 ½” x ¼” flat bars
B. gate with mailbox GA # 16 or per design
C. window grilles – ordinary or pregnant grilles
D. fire escape ladder
E. air con frames / manhole cover
F. open court grilles – flat bars and angular bars
G. stair railings with design
H. cyclone or interlink wire
G.I pipes/ Welding rod
I. others per plan
brass nosing for stair / screws
Q. Electrical works
Note : if floor plan has no electrical layout
Assumption
Nos. of c.o Nos. of light outletResidential 0.38/m² 0.18/m²Commercial 0.42/m² 0.22/m²
Industrial 0.60/m² 0.40/m²
1. Get total nos. of C.O. outlet x unit cost
2. Get total nos. of ceiling outlet x unit cost
R. Add 30% of 1 & 2 for load center and panel boards
1. Add 40% of 2 for lighting fixtures
2. Add 15% of 1 & 2 for wiring devices
3. add 12% of 1 & 2 for fire alarm
4. add 12% of 1 & 2 for telephone
36
5. add 10% of 1 & 2 for music and paging system
6. add 8% of 1 to 8 for miscellaneous and contingencies
note: verify MeRalCo / PLDT for tapping
1. Transformer
2. Tel. House cable
3. Single phase or three phase
ELECTRICAL COMPUTATIONS:
SINGLE PHASE
Total load x 80% demand factor = LOAD
FOR 110 / 220V
C.O. x 0.75 A =__________total amps
Ground Wire – size =TOTAL LOAD WIRE 3
or 75% if lights & C.O.
ELECTRICAL LOAD COMPUTATION (STANDARD)
DESCRIPTION
# OF WATTS
PER UNIT
WIRE SIZEAMPERE
LOAD
English MetricConvenienceOutlets
180watts-200watts
TW # 12 3.5mm² 20A
Lights:Fluorescent Lights 20 watts
TW # 14 2.0mm² 15A
Halogen lights40 watts
TW # 14 2.0mm² 15A
Incandescent 100 watts
TW # 14 2.0mm² 15A
Track lights150 watts
TW # 14 2.0mm² 15A
Air con unit 1.0 HP
1,980 watts
TW # 10 5.50mm² 30A
1.5 HP2,200 watts
TW # 10 5.50mm² 30A
2.0 HP2,640 watts
TW # 10 5.50mm² 30A
Water heater SPO
1,000 watts
TW # 10 5.50mm² 30A
Range outlet 8,000 TW # 8.00mm² 40A /
37
watts 08 50AWater pump
½ HP880 watts
TW # 10 5.50mm² 30A
1HP1,780 watts
TW # 10 5.50mm² 30A
Electric stove2,000 watts
TW # 10 5.50mm² 30A
Chandelier1,000 watts
Refrigerator 320 wattsFreezer 200 wattsWashing machine 585 watts
Dryer 3,000 watts
Jacuzzi 1 HPWater heater centralized
6,000 watts
Ampacity Of Conductorssolid stranded
AWG mm² TW THW IN. Conduit mm²
16 For stereo
wire
14 2.0 15 15 ½ 1512 3.5 20 20 ½ 2010 5.5 30 30 ¾ 208 8.0 40 45 ¾ 206 14.0 55 65 1’ 254 22 70 85 1 ½ 322 30 90 110 1 ¾ 321 38 100 125 1 ½ 400 50 120 145 2” 50
00 60 135 160 2” 503 / 0 80 160 195 2” 504 / 0 100 185 200 2 ½ 65250 125 210 255 2 ½ 65300 150 240 280 2 ½ 65400 200 280 330 3” 80500 250 315 375 3 ½ 90650 325 370 435 3 ½ 90750 400 405 485 4” 1001000 500 445 540 4” 100
38
ELECTRICAL LOAD COMPUTATIONS (RESIDENTIAL)
CKTNOS.
LIGHTS SWOTHERLOAD
VOLTS WATTS AMPS
1 10 11 220 1,000 4.542 9 9 220 900 4.093 6 6 220 600 2.724 5 220 1,000 4.545 11 220 2,200 10.006 2 220 400 1.81
7 1-SPOStove 3
KW220 3,000 13.63
8 1-SPOBell or buzzer
220 50 0.22
Total 41.55 A
Computations:
TOTAL FLOOR AREA = 135m²
135m² @ 24 W / SW 3,240 W
Small Appliance load 3,000 W
6,240 W
First 3,000 W @ 100% DF 3,000 W
Renaming 3,240 W @ 35% DF 1,134 W 4,134 W
4,134 = 18.79 A220 V
1 Electric stove 3W 13.631 Buzzer 0.22 A
IT = 32.64 A
Use 2 # 14.0 mm² THW wire in 25 mmd RSC 4.55 A / 65 A
Watts = Volts x Ampere W=EI
Ampere = watts I= W Volts V
1 horsepower = 746 watts
volts = voltampere
39
CARRIER AIR CONDITION
MODEL NOS BTV/HR HORSE POWER Suggested room space
WC 90 RCY 9,000 1 hp Up to 18 m²WC 120 RCY 12,000 1 ½ hp 18 to 24 m²WC 120 RCY 12,000 1 ½ hp 18 to 24 m²WC 150 RCY 15,000 1 ½ hp 24 to 30 m²WC 180 RCY 18,000 2 hp 30 to 36 m²
Cabinet Dimension H (40mm) x (w) 658 mm
Split type air con /package = 20m² / tons
B. Rough- in
1. PVC pipes
a. ½” to 3” SCH. 40 Neltex, Atlanta, super
b. PVC cement
c. PVC coupling ½” to 3”
d. PVC Elbow ½” to 3”
2. RSC pipe and fitting per plan/brand –Maru– ichi ,setsuyo
a. 3/4” to 3” – entrance / up to panel verify
b. RSC elbow
c. RSC coupling
d. LB /LR
e. Entrance cup
f. Locknuts and bushing
3. secondary rack – power and telephone
4. Solderless connector
Angle connector
Straight connector
5. RSC conduit clamp
6. metal moulding
40
7. circular loam ¼” to ¾”
8. THW, THHN, TW wires solid or stranded 150 LM/roll
9. G.I. k#16 – guide wires
10. P.D. jacketed telephone wires #22/3 flat cord
11. BX wire #12/2 / #123/2 / #8/2’
12. Intercom wires
13. telephone steel cabinets GA # 16 or GA #18
telephone cable wires for 3 storey building
14. pull box (steel ) per plan
15. wire gutter per plan (distribution panel)
16. utility box local or imprinted, plastic or metal GA #16 -#18
17. junction box 4” x 4”
18. 4 11/6 x 4 11/16 square box with ½” and ¼” K.O.
19. PVC Tape or rubber tapes
20. Wiring devices
a. Switches – National , Veto or Mikosha
Flush mounted
a. One gang switch with cover complete
b. Two gang switch with cover complete
c. Three gang switch with cover complete
d. Three way switch
e. Dimmer switch
b. Convenience outlets – ordinary duplex
a. Weather proof outlet
b. Water heater
c. Floor c. outlet
d. Range outlet
e. Air con outlet
41
f. Microwave oven outlet
c. Door bell and buzzer /chime
d. Telephone outlet cover
e. Blank cover
f. Fire alarm bell and station
g. Intercom set band- air phone
h. Smoke detectors
i. Camera monitor
j. CATV antenna – “Winegard” w/ splitter, booster an accessories
k. Lighting panel – “Flush-type or flush mounted enclosure” circuit
breaker plug in or bolt-on
l. Safety switch
m. Double throw switch – emergency generator
n. AVR – automatic voltage regulator
o. Emergency lights.
p. Lighting fixtures
Note: most often owner supplied materials installation done
by contractor
q. Lighting arrester Verify Brand
S. Plumbing works
A. Cold water consumption
Type of building gallons/person/day
Residence – average 50Residence – average 100Apartment – low rent 75Apartment – high rent 100Hotels 100Office buidings 25
42
MWSS WATER METER TAPPING
Size of Nos. of units per connection¾” ½” ¾”1” 1-2
1 ¼” 3-5 1-21 6-9 3-4 1-2 1-2½” 10-15 5-6 3 3 1-2
2 16-32 7-11 4 4 3 2 1
B. Rough –in
1. PVC pipes and fittings S-40
2. Cast iron pipes and fittings
C. Checklist PVC PIPES OR OTHER TYPES
1. Pipes x 10’ length
2. Cast iron x 5’ (length)
3. WYE
4. TEE
5. Double TEE
6. ¼ bend
7. 1/8 bend
8. P-trap with or without clean out hole
9. coupling
10. Double WYE
11. Tap Tee
12. PVC cement
13. Lead sheet
14. Epoxy A and B set
15. PLBG. Oakum
D. Waterlines: Check hot or cold lines
43
1. GI pipe and fittings local or japan
1. ½ - 12mm
2. ¾ - 15mm
3. 1” – 25mm
4. 1 ¼” – 32mm
2. Fittings
1. GI elbow
2. St. Elbow
3. TEE
4. Union Patente
5. TEE – reducer
6. GI bushing
7. GI nipple
3. Water tank fittings per plan
4. septic tank and cistern tank
V= L x W x H x 264 gals.= Cu. Meter
Septic tank – design standard (minimum)
National Plumbing Code
Nos. of persons Inside depth of chamberServed Depth Width Length 10+5 1.20 1.10 1.80
20 1.20 1.25 2.5025 1.20 1.40 2.8030 1.30 1.50 3.0035 1.30 1.60 3.2040 1.40 1.65 3.3045 1.40 1.75 3.5050 1.50 1.80 3.6060 1.50 1.95 3.8070 1.50 2.00 4.0080 1.60 2.20 4.4090 1.80 2.30 4.60
100 1.80 2.50 5.00Note: leaching well is aproximately ½ of volume of digestion chamber
Capacity of cylindrical tanks
44
Diameter 2 x 0.7854 x length = volume
If cubic feet x 7.4805 = nos. of gallons
1. Cement
2. Sand
3. Gravel
4. Forms
5. 4 ¼” tiles (white)
5. Water heater
6. Shower values and heads
1. Single shower valve
2. Three valve diverter
7. Lavatory centerset faucet
8. Kitchen sink faucet
9. hosebibb – faucet with or without HB
10. Gate valves ½” ¾”
11. Angle valves / check velves
12. Siamese twin (fire hydrant) 3”x2 ½ x2 ½
2 ½ x 2 ½ x 2 ½
13. Fire hose cabinet with F. extinguisher
14. Water meters – main, branches
Note verify MWSS tapping of waterline to building
15. Accessories
1. floor drain/ strainer
2. roof drain
3. grease traps
4. drinking fountain and other per plan
5. special equipment
45
16. PLUMBING FIXTURES Verify Specs
1. waterclosets
2. lavatories
3. bidet
4. urinals
5. kitchen sink
6. bathtub
7. soap holder
8. paperholder
9. toilet
10. dispenser
11. shampoo & tooth brush holder
12. towel bar
13. mirror
14. medicine cbinet
15. curtain rods
46
T. Painting works
A. Painting works
1. Masonry Surfaces – latex
2. finishes washout and others – repellent
3. wood surfaces – cabinets/ closets/ceiling/walls
4. wood preserver
5. steel windows/ grilles – qde
6. varnish
7. automotive lacquer finish
8. natural oil finish
9. special finishes
1. acre – cast
2. spraytex
3. Alladin finish
10. roofing – Portland cement paintor Acrylic Paint
B. Overhead/ Contingencies
- note: contractor’s tax
- insurance
- permits – locational clearances
- power and water for construction
- barangay clearance
Updated Jan 12, 2006 FOR RESEARCH & IMPROVEMENTS
47
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