Estimating and Costing
The trap which is provided to disconnect the house drain from the street sewer is called

All listed here
Intercepting trap
Master trap
Interception manhole

ANSWER DOWNLOAD EXAMIANS APP

Estimating and Costing
The assumption on which the trapezoidal formula for volumes is based, is

All listed here
The volume of the Prismoidal is over-estimated and hence a Prismoidal correction is applied
The end sections are parallel planes
The mid-area of a pyramid is half the average area of the ends

ANSWER DOWNLOAD EXAMIANS APP

Estimating and Costing
The correct Prismoidal formula for volume is

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

ANSWER DOWNLOAD EXAMIANS APP