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UPSC Civil Service Exam Questions

Q1: Consider the following statements :
A grillage base is checked for
1. bending
2. shear
3. compression
4. web crippling
Which of these statements are correct ?

A 1 and 4

B 1 and 3

C 2, 3 and 4

D 1, 2 and 4

ANS:D - 1, 2 and 4

Correct answer is D.

A grillage base is a frame work of rolled steel beams forming foundation in the soil of poor bearing capacity. In the grillage base beams are checked for bending, shear and crippling of web of the beams in the upper tier. Lower beams are just checked for bending and shear. The web crippling does not occur in lower tier.



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