QTS221 Measurement and Description of Complex Superstructure Measurement Guide - Pad Foundation

2019/2020 ACADEMIC SESSION Pits at Corners

QTS221 Length (L6) 1200
PAD FOUNDATION Less: projection width 262.5
937.5
Project: PROPOSED DEVELOPMENT FOR:
Consultants: DEPARTMENT OF QUANTITY SURVEYING Breadth (B5) 262.5
Prepared by: R. K. FAGBENRO
No 4
List of Drawings Sheet No
Architectural Drawings Pits at Recess
Ground Floor Plan 1 Length (L7) 600
Foundation Layout 2 Add: 375
Foundation Details 3 975
Less: half of trench (1/2/675) 337.5
SUBSTRUCTURE (ALL QUANTITIES ARE PROVISIONAL) 637.5
Take-Off List
Site Clearance Breadth (B5) 262.5
Topsoil Excavation
Retaining Excavated Material No 4
Pit Excavation
Trench Excavation 1.5: EXCAVATING AND FILLING
Disposal of (Excess) Excavated Materials SITE CLEARANCE/PREPARATION EXCAVATIONS
Support to Faces of Excavations 1.5:4:1:1 Site Clearance;
Filling to excavations clearing site vegetation and other growths
Filling to make up levels and dispose offsite;
Compacting grasses, shrubs, undergrowths, etc.
Mass Concrete Blinding
Reinforced Concrete Column Bases &
Reinforced Concrete Column Studs
Reinforced Concrete Beds 1.5:5:2:1 Site preparation;
Formwork to Sides of Foundation - Bases & Studs remove topsoil; 150mm deep
Formwork to Edges of Beds
Reinforcement in Column Bases &
Reinforcement in Column Studs
Reinforcement in Beds 1.5:10:1:1 Retaining excavated;
Foundation Blockwall topsoil;
Damp-Proof Membrane to temporary spoil heaps
_________ x 0.15 = _________ m3
Site Clearance/Topsoil Excavation/Retaining Material
Main Building 21.23
Building Length (L1) 21225 8.40 (Main Building)

Building Breadth (B1) 8400

1.65
Terrace Projection 0.75 (Terrace)
Length (L2) 1200
Add: Walls (2/225) 450 7.4/ 1.20
1650 0.26

Breadth (B2) 1875 4.4/ 0.94

Less: toilet breadth 1125 0.26
750
4/ 0.64
Recesses 0.26
Recesses along Grid 1/2
Length (L3) 375
Add: 3675 Ddt;
4050 1.5:4:1:1 Site Clearance;
clearing site vegetation and other growths
Breadth (B3) 375 and dispose offsite;
grasses, shrubs, undergrowths, etc.
No 2
&
Recesses along Grids A/B & J/K
Length (L4) 375 1.5:5:2:1 Site preparation;
remove topsoil; 150mm deep
Breadth (B4) 3975
&
No 2
1.5:10:1:1 Retaining excavated;
Pits Projection topsoil;
Pits along Building Boundary to temporary spoil heaps
Length (L5) 1200 _________ x 0.15 = _________ m3

Breadth (B5) 1200 2/ 4.05

Less: trench intersection 675 0.38
2 ) 525
262.5 2/ 0.38
3.98
No 7

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Department of Quantity Surveying, University of Lagos 2019/2020 Academic Session

QTS221 Measurement and Description of Complex Superstructure Measurement Guide - Pad Foundation

Pits Excavation Trenches along y-plane 39750

Length 1200 Trenches along x-plane 26250
Total Internal Trenches 66000
Breadth 1200 Less: Pits Intersection (7/3/1/2/1200) 12600
53400
Depth 1000 Less: Pits Intersection (4/1/2/1200) 2400
Add: Blinding 50 51000
1050 Less: Pits Intersection (11/1/2/1200) 6600
Less: topsoil 150 44400
900 Less: Trench intersection (4/1/2/675) 1350
43050
No 23
1.5:6:2:1:1 Excavation, commencing from stripped level;
1.5:6:2:1:1 Excavation, commencing from foundation excavations;
stripped level; maximum depth not exceeding 2.00m;
foundation excavations; trenches
maximum depth not exceeding 2.00m;
pits
&
& 1.5:9:2:1 Disposal;
excavated materials offsite;
1.5:9:2:1 Disposal; 20m away from the site of excavations
excavated materials offsite; 38.85
20m away from the site of excavations 0.68
0.90 (External)
23/ 1.20
1.20 43.05
0.90 0.68
0.90 (Internal)

Trench Excavation
Width of Excavation 675 Support to Faces Excavation
Pits
Depth of Excavation 900 Girth 4/ 1200
4800
External Trench Girth Less: Trench intersections (2/675) 1350
External Length 21225 3450
Add: External Breadth 8400
2/ 29625 No 4
59250
Less: (4/2/1/2/225) 900 Girth 4/ 1200
58350 4800
Less: Pits at corners (4/2/1/2/1200) 4800 Less: Trench intersections (3/675) 2025
53550 2775
Less: Pits at recess (4/1200) 4800
48750 No 17
Less: Pits at recess (4/375) 1500
47250 Girth 4/ 1200
Less: Pits at boundary (7/1200) 8400 4800
External Trench Girth 38850 Less: Trench intersections (4/675) 2700
2100
Internal Trench Girth
Trenches along y-plane No 2
Grid C & I 1125
Add: 3825 1.5:8:1:1:1 Support to faces of excavations;
2/ 4950 9900 maximum depth 900mm;
pits
Grid D & H 2100
Add: 750 4/ 3.45
2/ 2850 5700 0.90

Grid E & G 375 17/ 2.78

3975 0.90
3825
2/ 8175 16350 2/ 2.10
0.90
Grid F 3975
3825
7800 7800 1.5:8:1:1:1 Support to faces of excavations;
Trenches along y-plane 39750 maximum depth 900mm;
trenches
Trenches along x-plane
Grid 3 & 5/E-G 2/ 5250 10500 2/ 38.85
0.90
Grid 4/C-E & G-I 825
Add: 3825 2/ 43.05
2/ 4650 9300 0.90

Grid 5/A-C & I-K 375

Add: 2850
2/ 3225 6450
Trenches along x-plane 26250

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Department of Quantity Surveying, University of Lagos 2019/2020 Academic Session

QTS221 Measurement and Description of Complex Superstructure Measurement Guide - Pad Foundation

1.6: GROUND REMEDIATION AND SOIL STABILISATION Brought forward 300

1.6:9:1:1 Compacting; Less: Hardcore 150
Bottom of excavations 150
Add: Topsoil 150
23/ 1.20 Depth of Laterite Filling 300
1.20 (Pits)
Toilets
38.85 Length (L1) 2850
0.68 (External Trenches) Less: 2/1/2/225 225
2625
43.05
0.68 (Internal Trenches) Breadth (B1) 3975
Less: 2/1/2/225 225
3750
Filling to Excavations
Pits Length (L2) 825
Length 1200
Breadth (B2) 2100
Breadth 1200 Add: 750
2850
Depth 900 Less: 2/1/2/225 225
Less: Column bases 300 2625
600
Number 2
Trenches
Depth 900 Bedroom 1
Less: Footings 225 Length 3600
675
Breadth 3000
Width 675
Less: Blockwall 225 Number 2
2 ) 450
225 Bedroom 2
Length 3000
Number of Sides 2
Breadth 3600
1.5:11:2:1:1 Filling obtained from excavated material;
final thickness of filling exceeding 500mm deep; Number 2
arising from excavations;
adequately compacted at 150mm layers Livingroom
Length 4425
&
Ddt; Breadth 4725
1.5:9:2:1 Disposal;
excavated materials offsite; Number 2
20m away from the site of excavations
Kitchen
23/ 1.20 Length 2400
1.20
0.60 (Pits) Breadth 3000

2/ 38.85 Number 2
0.23
0.68 (External Trenches) Stairhall
Length 2400
2/ 43.05
0.23 Breadth 3600
0.68 (Internal Trenches)
Number 2

Ddt; Terrace
1.5:11:2:1:1 Filling obtained from excavated material; Length 5025
final thickness of filling exceeding 500mm deep;
arising from excavations; Breadth 900
adequately compacted at 150mm layers
Number 1
&
Add:
1.5:9:2:1 Disposal;
excavated materials offsite;
20m away from the site of excavations

23/ 0.23
0.23
0.60

Imported filling to Make up level

Depth of Filling
Depth of Hardcore 150

Depth of Laterite Filling 450

Less: Concrete bed 150
Carried forward 300

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Department of Quantity Surveying, University of Lagos 2019/2020 Academic Session

QTS221 Measurement and Description of Complex Superstructure Measurement Guide - Pad Foundation

1.5:12:2:1:1 Imported filling; Reinforced concrete column studs

beds exceeding 50mm thick but not exceeding Depth 1000
500mm deep, 150mm deep; Add: 450
level to falls or crossfalls; 1450
compacted hardcore at 150mm layers Less: Column base 250
_________ x 0.15 = _________ m3 1200
Less: concrete bed 150
& 1050

1.5:12:2:1:1 Imported filling; Depth of column base 250

beds exceeding 50mm thick but not exceeding
500mm deep, 300mm deep; Concrete bed thickness 150
level to falls or crossfalls;
compacted laterite at 150mm layers Insitu concrete mix ratio 1:2:4, 19mm aggregate,
_________ x 0.30 = _________ m3 25N/mm2 at 28days in;
1.11:5:1:1:1 Vertical works;
2/ 2.63 not exceeding 300mm thick;
3.75 in structures, column studs;
reinforced
2/ 0.83
2.63 23/ 0.23
0.23
2/ 3.60 1.00
3.00
Ditto;
2/ 3.00 1.11:2:1:2:2 Horizontal works;
3.60 not exceeding 300mm thick;
in structures, column bases;
2/ 4.43 reinforced
4.73
23/ 1.20
2/ 2.40 1.20
3.00 0.25

2/ 2.40 Ditto;
3.60 1.11:2:1:2:2 Horizontal works;
not exceeding 300mm thick;
5.03 in structures, beds;
0.90 reinforced

21.23
1.11: INSITU CONCRETE 8.40
Insitu concrete mix ratio 1:3:6, 38mm aggregate in:
1.11:1:1:2:1 Mass concrete; 2/ 1.65
50mm thick; 0.75
in trench filling;
poured on or against earth or unblinded hardcore
_________ x 0.05 = _________ m3 Ddt;
Ditto:
23/ 1.20
1.20 (Pits) 2/ 3.68
38.85 0.38
0.68 (External Trenches)
43.05 2/ 0.38
0.68 (Internal Trenches) 4.35

2/ 2.63
3.75 Insitu concrete mix ratio 1:2:4, 19mm aggregate,
25N/mm2 at 28days in;
2/ 0.83 1.11:2:1:2:1 Horizontal works;
2.63 not exceeding 300mm thick;
in structures, footings;
2/ 3.60 poured on earth
3.00 38.85
0.68
2/ 3.00 0.23 (External Trenches)
3.60
43.05
2/ 4.43 0.68
4.73 0.23 (Internal Trenches)

2/ 2.40
3.00

2/ 2.40
3.60

5.03
0.90
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Department of Quantity Surveying, University of Lagos 2019/2020 Academic Session

QTS221 Measurement and Description of Complex Superstructure Measurement Guide - Pad Foundation

Formwork to Sides of Foundations REINFORCEMENT FOR INSITU CONCRETE

FORMWORK FOR INSITU CONCRETE B.S. Fabric mesh laid to both side and end laps
Film-coated plywood 'Marineplex or approved equal' of 150mm in:
with adequate bracings to: 1.11:37:2:2 Mesh;
1.11:13:1 Sides of foundations and bases; reference A142;
not exceeding 500mm high; strips in one width, 1.20m wide
column bases
21.13
23/4/ 1.20 8.30 (Main building)

Ditto; 2/ 1.65
1.11:13:2 Sides of foundations and bases; 0.75 (Terrace projection)
exceeding 500mm high;
column studs
Ddt:
23/4/ 0.23 Ditto
1.05
2/ 4.05
Ditto; 0.38
1.11:14:1 Edges of horizontal;
not exceeding 500mm high; 2/ 0.38
beds 3.98

2 21.23 (Building length)

High yield tensile reinforcement to BS 4429 including
2 8.40 (Building breadth) spacers, binding wire, etc. in column bases:
1.11:34:1:2 High yield steel bars;
2/2 0.75 (Terrace projection) 12mm nominal diameter;
bent, straight, curved

Reinforcement in Foundation 23/2/6/ 1.40

Column bases
Y1201 1200 Ditto;
Less: Concrete cover (2/50) 100 in column studs:
1100 1.11:34:1:2 High yield steel bars;
Add: bend (2/150) 300 16mm nominal diameter;
1400 bent, straight, curved

Number of bar 6 23/4/ 2.55

Number of sides 2 Ditto;

1.11:34:1:4 High yield steel bars;
Number of member 23 10mm nominal diameter;
links
Column studs (Assumed)
Y1601 450 23/8/ 0.63
Add: 1000
1450 Blockwall in Foundation
Add: projection above bed 900 Depth of wall 450
2350 Add: 1000
Add: hook 200 1450
2550 Less: concrete footings 225
1225
Number of bar 4 Less: concrete bed 150
1075
Number of member 23
External Wall Girth
Y1001 225 External Length 21225
Less: conc. Cover (2/50) 100 Add: External Breadth 8400
4 125 2/ 29625
500 59250
Add: hook 125 Less: (4/2/1/2/225) 900
625 58350
Less: columns at corners (4/2/1/2/225) 900
Number of bar 450 57450
Add: 1000 Less: columns at recesses (4/2/1/2/225) 900
200 ) 1450 56550
7.25 Less: columns at boundaries (7/225) 1575
Add: 1 External Trench Girth 54975
8.25
Number 8

Number of member 23

BRC Mesh in Beds

Length 21225
Less: concrete cover (2/50) 100
21125

Breadth 8400
Less: concrete cover (2/50) 100
8300
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Department of Quantity Surveying, University of Lagos 2019/2020 Academic Session

QTS221 Measurement and Description of Complex Superstructure Measurement Guide - Pad Foundation

Internal Wall Girth

Walls along y-plane
Grid C & I 1125
Add: 3825
2/ 4950 9900

Grid D & H 2100

Add: 750
2/ 2850 5700

Grid E & G 375

3975
3825
2/ 8175 16350

Grid F 3975
3825
7800 7800
Trenches along y-plane 39750

Trenches along x-plane

Grid 3 & 5/E-G 2/ 5250 10500

Grid 4/C-E & G-I 825

Add: 3825
2/ 4650 9300

Grid 5/A-C & I-K 375

Add: 2850
2/ 3225 6450
Trenches along x-plane 26250
Add: Trenches along y-plane 39750
66000
Less: column intersection (7/3/1/2/225) 2362.5
63637.5
Less: column intersection (4/1/2/225) 450
63187.5
Less: column intersection (11/1/2/225) 1237.5
61950
Less: walls intersection (4/1/2/225) 450
Total Internal Wall Girth 61500

1.14: MASONRY
BLOCKWALLING
450 x 225mm sandcrete concrete-filled block wall,
crushing strength 2N/mm2 aT 28 days, bedded and
jointed with cement and sand (1:4) mortar in:
1.14:1:2:1:1 Walls; 225mm overall thickness;
blockwork;
40mm thick skin;
stretcher bonding

54.98
1.08 (External)

61.50
1.08 (Internal)

Damp Proof Membrane

polyethene double layer damp proof membrane in:
1.5:16:1:1 Damp proof membrane;
Over 500mm wide;
Horizontal

21.23
8.40 (Main building)

2/ 1.65
0.75 (Terrace projection)

Ddt:
Ditto

2/ 4.05
0.38

2/ 0.38
3.98

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Department of Quantity Surveying, University of Lagos 2019/2020 Academic Session