UPSC Civil Service Exam Questions - Engineering

Q1:

Consider the following statements pertaining to intermediate stiffeners :
1. Stiffeners are provided to exclusively bear concentrated loads.
2. Stiffeners should bear tightly against top and bottom flanges.
3. Maximum spacing of stiffeners is restricted 180 t, where t is the thickness of web.
Which of the statements given above is are/correct ?

A 1, 2 and 3

B 1 and 2 only

C 3 only

D 2 only

ANS:C - 3 only

@KDM.

Yes, you are absolutely correct, option 2 is wrong.
According to IS 800 1984 6.7.4.2.
The stiffeners should extend end to end but need not to fit tightly to flanges
but,
Option 1 and 3 are correct.
Spacing should not exceed 180t.