TGPSC HMWSSB Manager 2015 Paper 2 · Question 29
Question 29 of the TSPSC Manager (Engineering), HMWSSB, 2015: Paper 2 (Civil Engineering) (1 November 2015). Try it first, then open the answer and explanation.
To obtain the correct volume using the trapezoidal rule, the prismoidal correction should always be
- Multiplied
- Added
- Subtracted
- Zero
Show answer
Answer: (3) Subtracted
The trapezoidal (average end area) rule usually overestimates the volume of earthwork compared with the prismoidal formula. The prismoidal correction is therefore subtracted from the trapezoidal volume to get the correct volume.