Estimating and Costing
As per Indian Standard Specifications, the peak discharge for domestic purposes per capita per minute, is taken

1.80 liters for 5 to 10 users
1.35 for 20 users
All of these
1.20 liters for 15 users

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Estimating and Costing
The correct Prismoidal formula for volume is

D/3 [first area + last area + 4 Ʃ Even area + 2 Ʃ odd areas]
D/6 [first area + last area + 2 ∑ Even area + 4 ∑ odd areas]
D/3 [first area + last area + 2 Ʃ Even area + 4 Ʃ odd areas]
D [first area + last area + Ʃ Even area + 2 Ʃ odd areas]

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