Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 9 (Q.No. 15)
15.
A simply supported beam of span (l) carries a point load W at midspan. The breadth 'b' of the beam along the entire span is constant. Given, f = permissible stress in bending, for a beam of uniform strength, the depth of the beam at any cross-section, at a distance x from the support would be :
6Wx/fb
6Wx/fb
3 Wx/fb
3 Wx/fb
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Vai said:   8 years ago
Correct answer is (3 Wx/ fb)^0.5.

Ap ci said:   3 years ago
I think there should be under root.

Anyone, please explain the formula.

Rahul verma said:   2 years ago
There should be under root.

M/I = f/y.
WL/4 * 6/b = d^2.
d = {3/2*WL/fb}^.05.

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