# Civil Engineering - Theory of Structures - Discussion

Discussion Forum : Theory of Structures - Section 2 (Q.No. 2)
2.
The general expression for the B.M. of a beam of length l is the beam carries
a uniformly distributed load w/unit length
a load varying linearly from zero at one end to w at the other end
an isolated load at mid span
none of these.
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

Steve said:   5 years ago
RA=RB= WL/2

Taking moment at a point Z, X distance from either support A or B gives: (Wx^2/2)-(WL/2)*x.

where:
Wx^2/2--------------> udl component.
(WL/2)*x-------------> reaction/support component.

SHAMNAS MANDHIYIL said:   6 years ago
Take a section at X distance from the end A of the beam.

Ra=Rb= wl/2.

Calculate moment at X distance from A.
Mx = Ra . x - w . x . x /2 = wlx/2 - w x2/2.

Somesh jain said:   7 years ago
Helpful session and questions, Thanks for posting this.

M.D.RAHUL NAIK said:   8 years ago
I like it and we can improve our knowledge.