In the figure given below, identify the purpose of the drawing which is used in building construction projects:
- AFooting for brick wall work
- BFooting for brick column work
- CPedestal for engaging steel column
- DPedestal for benchmarking workCorrect
Solution
Concept
Details of a bench mark pedestal
Step-by-step solution
1. The drawing shows a small brick pedestal on concrete with an MS plate and a hemispherical ball (staff rest) welded to it. 2. This is a benchmark pillar used for levelling.
Explanation
The hemispherical ball provides a fixed point for the levelling staff.
Why the other options are wrong
Footing and column pedestals have no staff-rest ball.
Shortcut
Hemispherical ball on a plate = bench mark.
Correct answer: D) Pedestal for benchmarking work