Estimating and Costing
The inspection pit or chamber is a manhole provided in a base drainage system

At every change of gradient
All of these
At every change of direction
At every 30 m intervals

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Estimating and Costing
Pick up the correct statement in case of water supply.

All of these
Pipes are classified according to their sizes and quality
Cutting through walls and floors are included with the item
Pipes laid in trenches and pipes fixed to walls are measured separately

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Estimating and Costing
The correct Prismoidal formula for volume is

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

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