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Work out the quantities of the following items from given plan & section

Work out the quantities of the following items from given plan & section

(a) Excavation for foundation

(b) Brickwork (CM= 1:6) in superstructure of ground floor

(c) Concrete (M20) in footing

(d) 20 mm thick External plastering in CM 1:4 upto terrace level

1 Answer
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Step 1:-

Total length $= .23*3+6.23*2+2.33*2+3.23*4+1.83+1.43+6.46*3+5.23*2+4.23 \\ = 80.06 m$

No of junction = 12

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$\text{Trapezoidal portion} \\ V= \bigg(\dfrac{A1+A2}{2}\bigg) *H \\ = \bigg(\dfrac{0.38*0.38+1.2*1.27*0.4}{2}\bigg) \\ = 0.333 m²$ $\hspace{6cm}$ $\text{Trapezoidal portion} \\ V= \bigg(\dfrac{A1+A2}{2}\bigg) *H \\ = \bigg(\dfrac{0.38*0.48+1.2*1.37*0.5}{2}\bigg) \\ = 0.456 m²$

$\text{Rectangular portion} \\ = 1.2*1.27*0.15 \\ = 0.22 m³ \\ VF1 = 0.333+0.22 \\ = 0.553 m³$ $\hspace{8.5cm}$ $\text{Rectangular portion} \\ = 1.2*1.37*0.15 \\ = 0.246 m³ \\ VF2 = 0.456 + 0.246 \\ = 0.702 m³$

Step 2:-

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Prepare an abstract sheet for above

Sr No Description Qty Unit Rate Unit of rate Amt
1 Brickwork in superstructure of GF 43.156 Cu.m 3850 Per cum 166150.6
2 20mm thick external plastering in CM(1:4) 76.54 Sq.m 15 Per sq.m 1148.1
3 Excavation for foundation 79.16 cum 10 Per cum 791.6

Total =168090.3

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