HARARE POLYTECNIC
CIVIL ENGINEERING DEPARTMENT NATIONAL CERTIFICATE IN QUANTITY SURVEYING
MEASUREMENT OF CONSTRUCTION WORK 1
TOPIC : SUBSTRUCTURE TAKE-OFF
11280
PLAN 230 115 230 230 230
1800 3800 1845 2800
BEDROOM
ENSUITE (Carpet)
(Ceramic)
LOUNGE
(Ceramic)
PANTRY
(Grano)
KITCHEN
(Ceramic)
VERANDAH
(Glitter stones)
230 2300 115 3300 230 4875 230
11280
SECTION
NOTES
FOUNDATIONS
* Plain unreinforced concrete 25 Mpa
22o to footings.
* 250 Micron black polythene sheeting on
100 mm thick unreinforced concrete on
150 mm thick hardcore to 95% H.C.E
* 1:4 cement sand morta to brickwalls
690 460 690 Prepared by T.E Dzvatsva
Substructure - Take off 1.pdf Take off
SUBSTRUCTURE
TAKE OFF LIST
1 Site clearance
2 Ddt Ditto
3 Topsoil removal
4 Ddt Ditto
5 Disporsal of excavated material
6 Ddt Ditto
7 Excavate for foundation trenches & Return fill and Ram
8 Allow for keeping excavations free from storm and surface water
9 Scarify and compact bottom of excavations
10 Risk of collapse
11 Concrete footings & Ddt R.F.R and add Cartaway
12 One brick thick walls walling & Brickforce
13 Half brick thick walls mm & Brickforce
14 Hardcore
15 Concrete slab
16 Blinding
17 Poylthene sheeting
18 Termite treatment to top of walls and filling
Strike off and cure tops of concrete 5
Site Clearance
Length Width
11280 8547
Add 2 1000 2000 2000
13280 10547 1
13.28 1
10.55 Clear site of all rubbish, bushes, hedges e.t.c 1000 mm around external
140.06 walls of bldng a deposit to a spoil heap on site. 0.5
m2
Deduct Voids
Length Width
2800 1200
230 230
3030 1430 1
3.03 Ddt 1
1.43 Ditto Voids
4.33 m2 0.5
Topsoil Removal
Foundation spread
Page 3
Substructure - Take off 1.pdf Take off
690
Less 230 (Walls)
2/ 460
230 0.5
Length Width
11,280 8547
Add 2 230 460 460
11,740 9,007 1
11.74 1
9.01 Excavate to remove vegtable soil average depth 150 mm
&
Disporsal of excavated material to spoil heaps on site not exceeding 30 m 0.5
x 0.15 m3 per m2………………………………………………………….
.m3 (Cubic)
Deduct Voids
3.03 Ddt 1
1.43 4.33 Ditto Voids
4.33
m2 0.5
Foundation Trenches
GIRTHS
External Girth 230
Length 11,280
Width 8,547
2 19,827
39,654
Less (4/0.5/2/230) 920 (corners
38,734 2
Internal Girth 230
4875
4927
2/230 460
1200
1500
12,962
4/230 920 passing
12,042 1
Internal Girth 115
3,650
4,322
2,300
115
3,300
13,687
Page 4
Substructure - Take off 1.pdf Take off
deduct 6 /115 690 passings
12,997 2
Depth of excavations
900 (Founding depth)
less 150 (topsoil)
750 0.5
38.73 1
Excavate for surface trenches n.e 2m deep commencing from N.G.L
0.69
0.75 20.04 &
12.04 Return, fill and ram 0.5
0.69
0.75 6.23
13.00
0.46
0.75 4.48
30.76
Storm Water
Item Allow for keeping the excavations free from storm, surface water and mud 1
by pumping and baling.
Compact bottom of excvations
38.73 Scarify and compact bottom of excavations 1
0.69 26.73
12.04
0.69 8.31
13.00
0.46 5.98
41.01
Timbering
GIRTHS
Outter face
38,734 (a.b.c) 2
Add (4/0.5/2/690) 2,760 (corners
Page 5
Substructure - Take off 1.pdf Take off
41,494
Inner Face
38,734 (a.b.c)
Less (4/0.5/2/690) 2,760
35,974 2
DEPTH
External Trench
Outer Face
900
Inner Face
900
less 150 (topsoil)
750 0.5
Internal trenches
750
41.49
0.90 37.34 Earthwork support to sides of excavations, maximum depth n.e 2m
35.97
2 0.75 26.98
12.04
2 0.75 18.06
13.00 1
0.75 19.50
101.88 m2 1
Concrete footings
38.73 Plain in situ concrete grade 20 Mpa to strip footings 1
0.69 &
0.23 6.15 Ddt R.F.R 1
12.04 &
0.69 Add cartaway 0.5
0.23 1.91
13.00
Page 6
Substructure - Take off 1.pdf Take off
0.46
0.23 1.38
9.43 m3
One Brickwalls
Brickwork height
900 (founding depth)
Add 150 (up to d.p.c)
1,050
less 230 (Conc footing)
820 1
Brickforce after every 3rd course
1/3(0.085)= 3.92 m per m2 0.5
38.73 One brick walls in common bricks bonded with 1:4 cement sand mortar 1
0.82 31.76 mix laid in stretcher bond
12.96 &
0.82 10.63 Brickforce suitable for One brickwallls Cotts Ref C2
42.39 x 3.92 m per m2…………………………. 166.24 .m. (Lineal) 1
Half Brick thick walls in foundations
13.69 Half brick wall in common bricks bonded with 1:4 cement sand mortar mix 1
0.82 laid in stretcher bond
11.22 &
Brickforce suitable for Half brickwallls Cotts Ref C1
x 3.92 m per m2…………………………. 44.01 .m. (Lineal) 1
Hardcore
Lounge
Area A
Length Width
4927 4875
Area B
Length Width
1845 1200
230
1430 1
4.93 2
Approved imported inert granular material, spread, level and compact in
4.88 maximum 150 mm layers to make up levels under floors to 95% H.C.E.
0.15 3.60 density.
1.85
1.43
0.15 0.40
4.88
1.50
0.15 1.10 2
4.32
Page 7
Substructure - Take off 1.pdf Take off
3.30
0.15 2.14
4.32
2.30
0.15 1.49
3.65
1.80
0.15 0.99
3.80
3.65
0.15 2.08
11.79
Concrete Slab
4.93 Plain in situ concrete grade 20 Mpa to substructure floor 1
4.88
0.10 2.40
1.85
1.43
0.10 0.26
4.88
1.50
0.10 0.73
4.32
3.30
0.10 1.43
4.32
2.30
0.10 0.99
3.65
1.80
0.10 0.66
3.80
3.65
0.10 1.39
7.86 2
Polythene Sheeting
4.93 250 Micron black polythene sheeting well lapped at joints junctions 2
4.88 24.02 including all cutting and waste (measured nett) laid horizontally over filling
to receive concrete.
1.85
1.43 2.64 & 1
4.88 Termite treatment as described to top of filling and walls.
1.50 7.31 & 1
4.32 Strike off and cure tops of concrete
3.30 14.26
4.32
Page 8
Substructure - Take off 1.pdf Take off
2.30 9.94
3.65
1.80 6.57
3.80
3.65 13.87
78.61
TOTAL 50
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