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 CONSTRUCTION ESTIMATE CALCULATOR
(BY ENGR. RONALD JOHN R. CAJILLA)
(JUST INPUT THE DATA INSIDE THE YELLOW CELL)
ITEM - I CONCRETING WORKS
A. DETERMINING THE VOLUME OF A CONCRETE
FOOTING FORMULA: VOLUME = L * W * T
CLASS A CONCRETE MIX
Enter Length L (M) 0.60 M
Enter Width W (M) 0.60 M
W T Enter Thickness T (M) 0.25 M
TOTAL VOLUME OF CONCRETE: 0.09 CU.M.
Number of Footing Units 10.00 Units
TOTAL VOLUME OF CONCRETE: 0.90 CU.M.
# OF CEMENT BAGS 9.00 BAGS
VOL. OF SAND CU.M. 0.50 CU.M.
L
VOL. OF 3/4" GRAVEL CU.M. 0.90 CU.M.

WALL FOOTING

T
L = LENGTH
W
FORMULA: VOLUME = L * W * T
CLASS A CONCRETE MIX
Enter Length LT (M) 32.00 M
Enter Width W (M) 0.30 M
Enter Thickness T (M) 0.15 M
TOTAL VOLUME OF CONCRETE: 1.44 CU.M.
# OF CEMENT BAGS 13.00 BAGS
VOL. OF SAND CU.M. 0.80 CU.M.
LT = TOTAL LENGTH/PERIMETER VOL. OF 3/4" GRAVEL CU.M. 1.50 CU.M.

FLOOR SLAB FORMULA: VOLUME = L * W * T

CLASS A CONCRETE MIX
Enter Length L (M) 15.00 M
T Enter Width W (M) 10.00 M
W
Enter Thickness T (M) 0.15 M
Enter Concrete Mix Design (CLASS) AA, A,or B AA 1:1.5:3
12 0.5 1
TOTAL VOLUME OF CONCRETE: 22.50 CU.M.
# OF CEMENT BAGS 270.00 BAGS
L

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 L VOL. OF SAND CU.M. 11.30 CU.M.
VOL. OF 3/4" GRAVEL CU.M. 22.50 CU.M.
(BY ENGR. RONALD JOHN R. CAJILLA)

FLOOR SLAB - BY AREA

FORMULA: VOLUME = Floor Area* T
CLASS A CONCRETE MIX
T Enter Floor Area A (SQ.M) 420.00 SQ.M
Enter Thickness T (M) 0.10 M
Enter Concrete Mix Design (CLASS) AA, A,or B B 1:3:6
TOTAL VOLUME OF CONCRETE: 42.00 CU.M.
# OF CEMENT BAGS 315.00 BAGS
Area
VOL. OF SAND CU.M. 21.00 CU.M.
7.5 0.5 1 VOL. OF 3/4" GRAVEL CU.M. 42.00 CU.M.

CONCRETE COLUMNS COLUMN DIMENSIONS:

RECTANGULAR
W1 Width 1 0.25 M
Width 2 0.25 M

W2
FORMULA: VOLUME = H * W1 * W2
H CLASS A CONCRETE MIX
Enter Height L (M) 1.22 M
VOLUME OF CONCRETE FOR EACH COLUME: 0.08 CU.M.
Number of Columns Units 10.00 Units
TOTAL VOLUME OF CONCRETE: 0.76 CU.M.
# OF CEMENT BAGS 7.00 BAGS
VOL. OF SAND CU.M. 0.40 CU.M.
VOL. OF 3/4" GRAVEL CU.M. 0.80 CU.M.

CONCRETE COLUMNS COLUMN DIMENSIONS:

CIRCULAR
D1 Diameter 0.13 M

AreaCirc 0.01 SQ.M.

FORMULA: VOLUME = H * AreaCirc

H CLASS A CONCRETE MIX
Enter Height L (M) 3.00 M
VOLUME OF CONCRETE EACH COLUMN: 0.04 CU.M.
Number of Columns Units 10.00 Units
TOTAL VOLUME OF CONCRETE: 0.40 CU.M.
# OF CEMENT BAGS 4.00 BAGS

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 VOL. OF SAND CU.M. 0.20 CU.M.
VOL. OF 3/4" GRAVEL CU.M. 0.40 CU.M.

(BY ENGR. RONALD JOHN R. CAJILLA)

CONCRETE BEAMS

FORMULA: VOLUME = LT * W * D
CLASS A CONCRETE MIX
LT EnterTotal Length LT (M) 8.00 M
Enter Width W (M) 0.30 M
BEAM DIMENSIONS: Enter Depth D (M) 0.60 M
D TOTAL VOLUME OF CONCRETE: 1.44 CU.M.
# OF CEMENT BAGS 13.00 BAGS
VOL. OF SAND CU.M. 0.80 CU.M.
VOL. OF 3/4" GRAVEL CU.M. 1.50 CU.M.
W

CONCRETE STAIRS

Enter Riser Height RH (M) 0.15 M

TR
W Enter Tread Run TR (M) 0.30 M
Enter Stair Width W (M) 1.20 M
RH Enter # of Steps N 7.00 Steps
Enter Stringer Thickness TS (M) 0.15 M

0.19 0.42 0.61

TOTAL VOLUME OF CONCRETE: 0.61 CU.M.

# OF CEMENT BAGS 6.00 BAGS
TS VOL. OF SAND CU.M. 0.40 CU.M.
VOL. OF 3/4" GRAVEL CU.M. 0.70 CU.M.

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA
ITEM - II MASONRY WORKS
A. DETERMINING THE NUMBER OF CONCRETE HOLLOW BLOCKS USED
B. DETERMINING THE NUMBER OF CEMENT & VOLUME OF SAND FOR MORTAR & PLASTERING
Enter Wall Height H (M) 6.00 M
Enter Wall Length L (M) 20.00 M
Enter Area of Window AW (SQ.M.) 2.88 SQ.M
Enter Area of Door AD (SQ.M) 1.47 SQ.M.
Breakage Allowance % 5.00 %

TOTAL WALL AREA: 115.65 SQ.M.

TOTAL NUMBER OF CHB: 1,518.00 PCS

MORTAR USING 4" CHB

# OF CEMENT BAGS 61.00 BAGS
VOL. OF SCREENED SAND CU.M. 5.10 CU.M.
MORTAR USING 6" CHB
# OF CEMENT BAGS 118.00 BAGS
VOL. OF SCREENED SAND CU.M. 9.80 CU.M.

PLASTER : 16mm thk Mix: 1:2

One face ofthe wall only
# OF CEMENT BAGS 34.00 BAGS
VOL. OF FINE SAND CU.M. 1.90 CU.M.
PLASTER : 16mm thk Mix: 1:2
Two faces of the wall
# OF CEMENT BAGS 67.00 BAGS
VOL. OF FINE SAND CU.M. 3.80 CU.M.

RIPRAPING WORKS L
W1 H (M)
Enter Height 2.00 M
Enter Width 1 W1 (M) 0.30 M
Enter Width 2 W2 (M) 0.60 M
Enter Length L (M) 20.00 M

Using: Stones ranging from 15 to 25 kgs with atleast

H 50% of stones weighing more than 20 kgs, &
Class A Mixture

TOTAL SIDE AREA: 0.90 SQ.M.

TOTAL VOLUME: 18.00 CU.M.
VOL. OF BOULDERS CU.M. 18.00 CU.M.
# OF CEMENT BAGS 47.00 BAGS
VOL. OF SAND CU.M. 2.60 CU.M.
W2

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 W2

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA
ITEM - III STEEL REINFORCEMENT
LENGTH OF REINFORCING BARS FOR CHB IN METERS
(M) LENGTH vertical spacing
(M) LENGTH
VERT. OF
OF SPACEING
SPACING HORIZONTA
VERTICAL LAYER
(CM) L REIN./
REIN./SQ.M.
SQ.M.

40 2.93 2 Layers 3.300

60 2.13 3 Layers 2.150

spacing
layer
80 1.6 4 Layers 1.720

DETERMINING THE NUMBER OF BARS USED

Enter Wall Height H (M) 3.50 M

Enter Wall Length L (M) 10.00 M
Enter wall openings SQ.M 1.68 SQ.M.
Enter Constant Factor VERTICAL 2.13 60cm
Enter Constant Factor HORIZONTAL 2.15 3 layers
TOTAL WALL AREA: 33.32 SQ.M.
# OF VERTICAL BARS USED: 12.00 PCS @ 6M
# OF HORIZONTAL BARS USED: 12.00 PCS @ 6M
#16 TIE WIRE USED: 1.60 Kgs

FOOTING MATTING
Enter Footing Length L (M) 0.60 M
Enter Footing Width W (M) 0.60 M
Enter # of Bars along L # 4.00 Pcs
Enter Number of Bars along W # 4.00 Pcs
L Enter Number of Footing # 10.00 Units
Enter Clear Cover Cc (M) 0.050 M
Note: Standard Clear Cover for footing =0.05m to 0.075m
# of Bars
per Side Net. Length along L 0.50 M
W Net. Length along W 0.50 M
# OF REIN. BARS USED: 8.00 LHS
#16 TIE WIRE USED: 1.30 Kgs

Clear
Cover

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA
WALL FOOTING REINFORCEMENT
Enter Wall Footing Width W (M) 0.30 M
Enter Wall Footing Total Length LT (M) 32.00 M
Enter Spacing of Tie Bars for Wall footing (M) 0.40 M

Total # of Ties: 81.00 PCS

Total # of Horizontal Bars Used: 12.00 LHS
T
Overall Total # of Bars used: 17.00 LHS
#16 TIE WIRE USED: 1.30 Kgs
W

Tie Bars
Spacing

LT = TOTAL LENGTH/PERIMETER

RECTANGULAR COLUMN REINFORCEMENT

D1
H

Clear Cover
for
D2 columns =
0.40m

Enter Column Height H (M) 1.47 M

Enter Number of Columns # 10.00 Units
Enter Reinforcement Bar Diameter required Ø 12.00 mm
Enter Column Dimension D1 (M) 0.25 M
Enter Column Dimension D2 (M) 0.25 M

Enter Number of Vertical Bars (M) 4.00 PCS

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 End Hook/ L hook Enter Stirrup bar diameter required Ø 10.00 mm
Enter Stirrups Spacing (M) 0.20 M

BY: ENGR. RONALD JOHN R. CAJILLA

0.5 0.2
Use End Hook: 0.200 M
Total length of each bars should be more than or equal to: 2.20 M
Total Number of Vertical Bars @ 6M: 20.00 LHS
3
Cut Length of each stirrups: 0.90 M
Number of Stirrups per Column: 19.00 PCS
Total Number of Bars used for stirrups @ 6M : 29.00 LHS

#16 TIE WIRE USED: 4.40 Kgs

CIRCULAR COLUMN REINFORCEMENT

Enter Column Height H (M) 3.50 M

Enter Number of Columns # 8.00 Units
Enter Reinforcement Bar Diameter required Ø 12.00 mm
Enter Column Diameter D1 (M) 0.30 M

D1 Enter Number of Vertical Bars (M) 6.00 PCS

Enter Stirrup bar diameter required Ø 10.00 mm
Enter Stirrups Spacing (M) 0.20 M

1 0.2
Use End Hook: 0.200 M
Total length of each bars should be more than or equal to: 4.20 M
Total Number of Vertical Bars @ 6M: 48.00 LHS
6 Circular Stirrups
Cut Length of each stirrups: 0.90 M
Number of Stirrups per Column: 28.50 M
Total Number of Bars required for stirrups @ 6M : 35.00 LHS
#16 TIE WIRE required: 7.80 Kgs

Spiral Stirrups
Cut Length of each stirrups: 0.70 M
Number of Stirrup Loops per Column: 28.50 M
Total Number of Bars required for stirrups @ 6M : 30.00 LHS
#16 TIE WIRE required: 7.80 Kgs

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA

BEAM REINFORCEMENT (BEAM TO BEAM = LESS THAN 6.0 METERS) ONE BAY

Enter Beam to Beam Length L (M) 5.00 M

Enter Beam Width W (M) 0.20 M
L(beam to beam) Enter Beam Depth D (M) 0.30 M
Enter Column Width Cw(M) 0.30 M
# of Bars # of Non-
Top Bars Continuous
Continuous Size of Bars Units
Bars
D Top Bars 3 - 16.00 mm
Web Bars
Web Bars - - 12.00 mm
Note: put "0" zero if web bars not applicable
Bottom Bars
Bottom Bars 2 - 16.00 mm
W
Enter Stirrup Bars Diameter required: 10.00 mm
Enter Stirrup Spacing: 0.20 M

L = Span
L/4

0.15L

Column
Width TOP BARS
# of 6m Length Deformed Bars required as Continuous Bars 3.00 PCS
# of 6m Length Deformed Bars required as Non-Continuous Bars - PCS
WEB BARS

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 # of 6m Length Deformed Bars required as Web Bars - PCS
BOTTOM BARS
# of 6m Length Deformed Bars required as Continuous Bars 2.00 PCS
# of 6m Length Deformed Bars required as Non-Continuous Bars - PCS

BY: ENGR. RONALD JOHN R. CAJILLA

Number of 16mm bars used as main bars 5.00 PCS
Number of 12mm bars used as web bars - PCS
Number of 10mm bars used as stirrups 6.00 PCS
#16 TIE WIRE USED: 0.80 Kgs
BEAM REINFORCEMENT (TWO BAYS) CONTINUOUS BEAM
Enter Beam Length 1 L1 (M) 5.00 M
Enter Beam Length 2 L2 (M) 5.00 M
Enter Beam Width W (M) 0.20 M
L1 L2 Enter Beam Depth D (M) 0.30 M
Enter Column Width Max Cw(M) 0.30 M
# of Non-
# of Bars Continuous
Top Bars Continuous
Size of Bars Units
Bars
D Top Bars 2 1 12.00 mm
Web Bars
Web Bars - - 10.00 mm
Note: put "0" zero if web bars not applicable
Bottom Bars
Bottom Bars 2 1 12.00 mm
W
Enter Stirrup Bars Diameter required: 10.00 mm
Enter Stirrup Spacing: 0.20 M
L = Span1 L = Span2
L/4 L/4

0.15 L
0.15 L

Column
Width

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 Column
Width
TOP BARS
# of 6m Length Deformed Bars required as Continuous Bars 4.00 PCS
# of 6m Length Deformed Bars required as Non-Continuous Bars 2.00 PCS
WEB BARS
# of 6m Length Deformed Bars required as Web Bars - PCS
BOTTOM BARS
# of 6m Length Deformed Bars used as Continuous Bars 4.00 PCS
# of 6m Length Deformed Bars required as Non-Continuous Bars 2.00 PCS

BY: ENGR. RONALD JOHN R. CAJILLA

Number of 12mm bars required as main bars 12.00 PCS
Number of 10mm bars required as web bars - PCS
Number of 10mm bars required as stirrups 2.00 PCS
#16 TIE WIRE USED: 2.20 Kgs
ONE WAY SLAB

QUANTITY OF REINFORCING STEEL BARS IN A ONEWAY REINFORCED CONCRETE SLAB

BAR SPACING IN CM. NUMBER OF STEEL BARS PER SQUARE METER TIES (KGS)
10.000 3.764 0.474
12.500 3.062 0.316
15.000 2.584 0.228
17.500 2.232 0.168
20.000 1.980 0.132

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 22.200 1.786 0.110
25.000 1.627 0.089

T Enter Length L (M) 9.00 M

W W (M)
Enter Width 7.00 M
Enter Bar Spacing cm 22.20 CM

# of Steel Bar Constant factor c 1.786

# of Ties #16 Constant factor c 0.110
L # OF STEEL BARS required PCS @ 6M 113.00 PCS
# OF #16 TIE WIRE required KGS 7.00 KGS
BY: ENGR. RONALD JOHN R. CAJILLA

TWO WAY SLAB

QUANTITY OF REINFORCING STEEL BARS IN A ONEWAY REINFORCED CONCRETE SLAB

BAR SPACING IN CM. NUMBER OF STEEL BARS PER SQUARE METER TIES (KGS)
10.000 4.369 0.592
12.500 3.603 0.416
15.000 3.221 0.350
17.500 2.647 0.247

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 20.000 2.360 0.174
22.200 2.168 0.168
25.000 1.977 0.142

T Enter Length L (M) 9.00 M

W W (M)
Enter Width 7.00 M
Enter Bar Spacing cm 25.00 CM

# of Steel Bar Constant factor c 1.977

# of Ties #16 Constant factor c 0.142
L # OF STEEL BARS required PCS @ 6M 125.00 PCS
# OF #16 TIE WIRE required KGS 9.00 KGS

BY: ENGR. RONALD JOHN R. CAJILLA

REINFORCED GROUND SLAB (BARS SPACING MORE THAN 25CM)

T Enter Length L (M) 9.00 M

W
Enter Width W (M) 7.00 M
Enter Bar Spacing along W cm 40.00 CM
Enter Bar Spacing along L cm 40.00 CM

# OF STEEL BARS USED PARALLEL TO L PCS @ 6M 31.00 PCS

L # OF STEEL BARS USED PARALLEL TO W PCS @ 6M 30.00 PCS
# OF #16 TIE WIRE required KGS 6.00 KGS

CONCRETE STAIRS
Enter Riser Height RH (M) 0.20 M
Enter Tread Run TR (M) 0.30 M
TR
W Enter Stair Width W (M) 1.00 M
Enter # of Steps N 10.00 Steps
RH TS (M)
Enter Stringer Thickness 0.15 M
0.30 0.36 0.66
Enter Spacing (M)
0.30
Enter Spacing (M) Enter Steps Lateral Bar diameter (mm)
0.30 12
Enter Stringer Lateral Bar diameter (mm)
16 TS
Enter Spacing (M)
0.30
Enter Spacing (M) Enter Steps Lateral Bar diameter (mm)

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 0.30 12
Enter Stringer Horizontal Bar diameter (mm)
12
Number of 12 mm Lateral Bars required @ Steps PCS @ 6M 5.00 PCS
Number of 12 mm Horizontal Bars required @ Steps PCS @ 6M 5.00 PCS
Number of 16 mm Lateral Bars required @ Stringer PCS @ 6M 4.00 PCS
Number of 12 mm Horizontal Bars required @ Stringer PCS @ 6M 2.00 PCS
# OF #16 TIE WIRE USED KGS 1.00 KGS

NOTES: DOWELS FOR LATERAL BARS ARE ALREADY INCLUDED IN THE ESTIMATES
FOR STAIRS LANDINGS YOU MAY USE THE SLAB REINFORCEMENT CALCULATOR

BY: ENGR. RONALD JOHN R. CAJILLA

CONCRETE CANAL

TOP OPENING WIDTH

Stiffener

Enter Canal Total Length (M) 100.00 M

Enter Canal Total Height (M) 0.80 M
CANAL TOTAL HEIGHT

Enter Top Opening Width (M) 0.50 M

Enter Bottom Opening width (M) 0.30 M
BOTTOM
OPENING Enter Canal Flooring Bottom Width (M) 0.50 M
WIDTH Enter Canal Flooring Thickness (M) 0.15 M

Enter # of layers of CHB used (1 Side) Layer 3.00 layers

TCF Enter Size of CHB required 4"=6"0.10,
= 0.15 0.10 M
CHB Breakage % allowance % 10 %
Calc. U bar length 2.45

CANAL Enter # of Horizonal Barsfor Walling (2 sides) PCS 4.00 PCS

FLOORING PCS
Enter # of Horizonal Bars for flooring 3.00 PCS
BOTTOM WIDTH
Enter U bar spacing (M) 0.60 M
7.5 0.5 1
CONCRETING Enter Concrete Mix Design (CLASS) A or B B 1:3:6
Canal Flooring Total Volume 7.50 cu.m. 56.25 28.13
Canal Top Stiffener Total Volume 1.00 cu.m. 9.00 1.00
# of Bags cement 66.00 BAGS
Volume of Sand 29.13 CU.M.

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 Volume of 3/4 Gravel 7.50 CU.M.
MASONRY
# of CHB used 550.00 PCS
AREA 120
MORTAR USING 4" CHB
# OF CEMENT BAGS 63.00 BAGS
VOL. OF SCREENED SAND CU.M. 5.30 CU.M.
MORTAR USING 6" CHB
# OF CEMENT BAGS 122.00 BAGS
VOL. OF SCREENED SAND CU.M. 10.20 CU.M.

PLASTER : 16mm thk Mix: 1:2

One face ofthe wall only
# OF CEMENT BAGS 35.00 BAGS
VOL. OF FINE SAND CU.M. 2.00 CU.M.

BY: ENGR. RONALD JOHN R. CAJILLA

REINFORCEMENTS
# of Horizontal Bars Used at CHB Wall 73.00 PCS @ 6M
# of Horizontal Bars Used at Flooring 55.00 PCS @ 6M
# U Bars 168.00 PCS
# Bars Used for U Bars 69.00 PCS @ 6M

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA
CARPENTRY WORKS
Determining the total board foot of a lumber.
Enter Number of pieces # 100.00 PCS
Enter lumber Dimension W1(IN) 2.00 inches
W2(IN) 4.00 inches
L L(FT) 12.00 feet (ft)

TOTAL # OF LUMBER IN BD.FT Bd.ft. 800.00 BD.FT

W2

W1

Determining the total board foot of a round log

FORMULA: (D - 4)² x L
16

Enter Number of pieces # 1.00 PCS

Enter lumber Dimension D1(IN) 28.00 inches
L(FT) 20.00 feet (ft)

TOTAL # OF LUMBER IN BD.FT Bd.ft. 720.00 BD.FT

Determining the total lengths or pcs of a certain lumber from Bd.ft.

Enter total Bd.ft : Bd.ft. 720

L Enter desired lumber dimension : W1 (in) W2 (in) L (ft)
2 4 10

TOTAL # OF LUMBER IN PIECES/LENGTHS PCS 108.00 PCS

W2

W1

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 W1

BY: ENGR. RONALD JOHN R. CAJILLA

NUMBER OF BOARD FOOT OF STUDS & NAILING JOIST PER SQUARE METER
SPACING IN CENTIMETER (CENTER TO CENTER)
Lumber size in
inches 30 x 30 30 x 60 40 x 40 40 x 60 60 x 60
1x2 4.103 3.147 3.189 2.686 2.268
2x2 8.198 6.293 6.379 5.373 4.594
2x3 12.284 9.440 9.569 8.060 6.898
2x4 16.414 12.592 12.758 10.746 9.195

L
Enter Length of Wall/Ceilling/Flooring L (M) 9.00 M
Enter Height of Wall/Ceilling/Flooring H (M) 3.00 M
Enter Constant Factor C 6.898
# OF BD.FT OF STUDS & NAILING JOIST USED: BD.FT 186.25 BD.FT.

Enter total Bd.ft : Bd.ft. 186.25

Enter desired lumber dimension : W1 (in) W2 (in) L (ft)
2 3 8
TOTAL # OF LUMBER IN PIECES/LENGTHS PCS 47.00 PCS

USING 1/4" ORDINARY PLYWOOD or 4' x 8' HARDIFLEX BOARD

TOTAL # OF 4'X 8' ORDINARY PLYWOOD USED (ONE SIDE) SHTS 10 Sheets
TOTAL # OF 4'X 8' ORDINARY PLYWOOD USED (TWO SIDES) SHTS 19 Sheets

# OF 1" CWNails Used for Boards (ONE SIDE) KGS 0.6 KGS
# OF 1" CWNails Used for Boards (TWO SIDES) KGS 1.1 KGS
# OF 2 1/2" CWNails Used for Joining the Studs together KGS 1.4 KGS

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA
ROOFING WORKS

Side Lapping 2 1/2 1 1/2

Effective Width 0.60 0.70
Roof Sheet Length 1
End Lapping 25cm - 30 cm

Roof Sheet Length 2 End lapping

Ls
Span

Projection (Bulada)

Pitch

12

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA
DETERMINING THE DESIRABLE NUMBER OF SHEETS IF USING MORE THAN ONE SHEET
Rafter L1 3.23109888 Enter Span (Ls) M 3.00 M
Angle 0.42279322 Enter Height (H) M 1.20 M
H2 0.40 Enter Projection Width (Bulada) M 1.00 M
Rafter L2 1.07676612
# of pulins 8.00 Total Length of Rafter M 4.31 M
USING ONLY TWO SHEETS
Roofing Length 4.38 Total Roofing Net Length M 4.38 M
1
2.40 Enter Roof Sheet Length 1 FT 8 FT
2.10 Enter Roof Sheet Length 2 FT 8 FT
2
Overlap 0.42 M 1.37 FT
OK Roof Sheet combination

USING THREE SHEETS

1
Roofing Length 4.38 Total Roofing Net Length M 4.38 M
2.40 Enter Roof Sheet Length 1 FT 8 FT
2 2.10 Enter Roof Sheet Length 2 FT 8 FT
3 2.10 Enter Roof Sheet Length 3 FT 8 FT
Overlap 1.41 M 4.62 FT
OK Roof Sheet combination
But not economical, cost you more money!
End Lapping must not be more than 2 ft
DETERMINING THE NUMBER OF ROOF SHEETS

Side Lapping 2 1/2 1 1/2

Effective Width 0.60 0.70
Enter Roofing total with M 11.00 M
Total Roof Width
Enter Effective Width M 0.70 M
USING ONLY TWO SHEETS
Number of the 1st Roof sheet used @ 8 feet long at one side only 16 Sheets
Number of the 2nd Roof sheet used @ 8 feet long at one side only 16 Sheets
Number of Umbrella Nails/Tekscrews 5 KGS

Note: Must multiply by two if the other side of the roof is similar

USING THREE SHEETS

Number of the 1st Roof sheet used @ 8 feet long at one side only 16 Sheets
Number of the 2nd Roof sheet used @ 8 feet long at one side only 16 Sheets

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 Number of the 3rd Roof sheet used @ 8 feet long at one side only 16 Sheets
Number of Umbrella Nails/Tekscrews 8 KGS
Not recommended, cost you more money!
Note: Must multiply by two if the other side of the roof is similar

BY: ENGR. RONALD JOHN R. CAJILLA

R
o
of
W
id
th

Roof Width

ROOF ACCESSORIES

Enter Total Covered Length 11.00 M

Enter Effective Length 2.20 M
Number of Roof Accessories Used 5 PCS

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA

TILING WORKS
Enter Wall or Floor Area 20.00 SQ.M.
Enter Breakage Allowance (5 - 10%) 10.00 %

Tile Size # of PCS

Inches cm per Sq.m.
3x3 7.5 x 7.5 3,912.00
4x4 10 x 10 2,200.00
4 1/4 x 4 1/4 10.6 x 10.6 1,945.00
4x8 10 x 20 1,100.00
6x6 15 x 15 978.00
6x8 15 x 20 734.00
6 x 12 15 x 30 489.00
8x8 20 x 20 550.00
8 x 12 20 x 30 367.00
8 x 16 20 x 40 275.00
10 x 16 25 x 25 352.00
12 x 12 30 x 30 245.00
12 x 24 30 x 60 123.00
16 x 16 40 x 40 138.00
20 x 20 50 x 50 88.00
24 x 24 60 x 60 62.00

Cement Mortar 2.00 BAGS

White Cement 10.00 KGS
Adhesive 3.00 BAGS

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA
PAINTING WORKS
Unit Conversion: 1 Gallon = 4 Liters Enter Wall Area 27.00 SQ.M.
Coverage/
Simplified Construction Estimate Enter Coverage 25.00 Gal
Table 10-6 Kinds of Paint, Uses and Area Coverage Enter # of Coats 2.00 Coats
PRIMERS Number of Gallons 3.00 Gals
KIND OF PAINT USES THINING DRYING TIME COVERAGE/Gal

1. Interior For interior 2 hrs, allow

Primer & Sealer wood surfaces Paint Thinner overnight b4 25 to 30 sq.m.
recoating

6 hrs, allow
2. Exterior For exterior Paint Thinner overnight b4 30 to 40 sq.m.
Wood Primer wood surfaces
recoating

Primer for
3. Red Oxide ferrous and
Paint Thinner 3 Hours 35 to 40 sq.m.
Primer non-ferrous
materials

4. Red Lead Rust preventive

primer for Paint Thinner 3 Hours 30 to 40 sq.m.
Primer
ferrous surfaces

For Steel, 6 hrs, allow

5. Epoxy Primer Aluminum, Epoxy Reducer overnight b4 30 to 40 sq.m.
Galvanized iron recoating

WATER BASE MASONRY PAINT

KIND OF PAINT USES THINING DRYING TIME COVERAGE/Gal

Exterior &
30 minutes
1. Acrylic Latex Interior 1/2 lts/ 4 lts
allow 6 hrs b4 30 to 40 sq.m.
Paint masonry water recoat
surfaces

Exterior & 30 minutes

2. Acrylic Semi- Interior Water allow 6 hrs b4 30 to 40 sq.m.
Gloss Latex masonry recoat
surfaces

Exterior &
3. Acrylic Gloss Interior 30 minutes
Water allow 6 hrs b4 30 to 40 sq.m.
Latex masonry recoat
surfaces

For furniture,
cabinets, doors,
4. Latex Hi-Gloss windows, tools, 1 Hour. Allow 4
Enamel toys, wrought Usse as is hrs before 30 to 40 sq.m.
recoating
iron, & primed
metals

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

5. Tinting Colors Acrylic colors water

ROOF PAINT
KIND OF PAINT USES THINING DRYING TIME COVERAGE/Gal

1. All weather for G.I. Shts, 4 hrs. allow

acylic roof asbestos bricks water overnight 40 to 50 sq.m.
shield concrete and before
stucco recoating

G.I. roofs and 6 hrs. allow

2. Davies Roof other metal overnight
such as Paint Thinner 30 to 40 sq.m.
paint before
aluminum and recoating
steel

ENAMEL AND GLOSS PAINT

KIND OF PAINT USES THINING DRYING TIME COVERAGE/Gal

for exterior &

5 hrs. allow 8
1. Quick Drying interior wood
Paint Thinner hrs. before 30 to 40 sq.m.
Enamel and metal
surface recoating

6 hrs. allow
2. Interior semi- Interior wood overnight
and metal Paint Thinner 25 to 30 sq.m.
Gloss Enamel before
surfaces
recoating

3 hrs. allow
3. Flat wall for interior wall Paint Thinner overnight 40 to 50 sq.m.
Enamel & ceilings before
recoating

for exterrior
6 hrs. allow 48
4. Exterior Gloss wood and
properly primed Paint Thinner
hrs. before 30 to 35 sq.m.
paint
recoating
metal surfaces

5. Tinting Colors Oil Base tinting

color

VARNISHING
KIND OF PAINT USES THINING DRYING TIME COVERAGE/Gal

for floors,
1. Valspar or sidings
Paint Thinner 24 hours 40 to 50 sq.m.
Spar Varnish furnitures, deck
of boats

for interior new 10 minutes.

wood furnitures
2. Hi-solid Allow 30
and fixtures, Lacquer Thinner minutes
sanding sealer cabinet, doors, before 40 to 50 sq.m.
etc. recoat

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 for interior new
3. Hi-solid clear wood Allow 30
furnitures, door Lacquer Thinner minutes before 30 to 40 sq.m.
gloss Lacquer
panelling and recoat
trim.

for interior new

wood Allow 30
4. Hi-solid Semi- furnitures, Lacquer Thinner minutes before 30 to 40 sq.m.
gloss Lacquer
cabinets, doors, recoat
shelves, etc

for interior
5. Hi-solid dead wood furniture, Allow 30
flat Lacquer cabinets, door Lacquer Thinner minutes before 30 to 40 sq.m.
jambs, trim recoat
panelling, etc.

for furnitures,
Allow 30
6. Water white cabinets, doors, Lacquer Thinner minutes
before 30 to 40 sq.m.
gloss Lacquer panel and
interior walls recoat

BASED ON MAX FAJARDO - SIMPLIFIED CONSTRUCTION ESTIMATE HANDBOOK

 BY: ENGR. RONALD JOHN R. CAJILLA
FORMS
DETERMINING THE TOTAL MATERIALS USED FOR SQUARES & RECTANGULAR COLUMN FORMS

Enter Column Height M 1.22

Column Dimension A M 0.25
Column Dimension B M 0.25
Co Enter Number of Columns Units 4.00
lu 1.20 11.52
m Note: One form per column - (Resusable form)
n
He 4' Total # of Bd.ft of frame required: 118.68 Bd.ft
igh OR
2. Enter desired lumber dimension : W1 (in) W2 (in) L (ft)
t
4 2 3 8
M Total Number of Lumber: 30.00 PCS
Total Number of Plywood required: 4.00 Sheet(s)
Total Number of #2 1/2 CWNails: 1.00 KGS
Total Number of #1 Finishing Nails: 0.40 Kgs

DETERMINING THE TOTAL MATERIALS USED FOR BEAMS & GIRDER FORMS

Enter Beam Length M 7.00

Beam Dimension D M 0.30
Beam Dimension B M 0.20
Enter Number of Beams Units 4.00
0.90 25.20
Total Beam Length
Total # of Bd.ft of frame required: 252.00 Bd.ft
W1 (in) W2 (in) L (ft)
2 3 8
Total Number of Lumber: 63.00 PCS
D Total Number of Plywood required: 9.00 Sheet(s)
Total Number of #2 1/2 CWNails: 2.10 KGS
Total Number of #1 Finishing Nails: 0.90 Kgs

B
 BY: ENGR. RONALD JOHN R. CAJILLA
SCAFFOLDINGS
PARTS OF SCAFFOLDINGS
1. Vertical Support
2. Base of Vertical Support
3. Horizontal Member
4. Diagonal Braces
5. Block and Wedges
6. Nails & Bolts
 BY: ENGR. RONALD JOHN R. CAJILLA

COLUMN BEAM
Enter Column Height M 3.00 Enter Beam Length M 3.50
Enter # of Columns Units 10.00 Enter # of Beams Units 6.00
Total Column Height: 30.00 M. Ht. Total Beam Length: 21.00 M. Ht.

FLOORING
Enter Floor Area SQ.M. 80.00

QUANTITY OF LUMBER FOR SCAFFOLDING OR STAGING

Lumber Column Beam
Flooring
Size Vertical Horizontal Brace Vertical Horizontal
2" x 2" 141.00 630.00 351.00 84.00 98.70 488.00
2" x 3" 210.00 950.10 525.00 126.00 147.00 728.00
2" x 4" 280.50 1,267.50 700.50 168.00 196.35 968.00

Enter total # of Bd.ft of Lumber required: 224.40 Bd.ft

W1 (in) W2 (in) L (ft)
2 4 8
Total Number of Lumber: 43.00 PCS
Total Number of #4 CWNails: 22.00 KGS