A simply supported beam AB has a clear span of 7 meter. The bending moment diagram (BMD) of the beam due to a single concentrated load is shown in the figure below.

Q. A simply supported beam AB has a clear span of 7 meter. The bending moment diagram (BMD) of the beam due to a single concentrated load is shown in the figure below.

The magnitude of the concentrated load in kN is____________.

1. 12
2. 7
3. 21
4. 42

Ans: 21

Solution:

Moment along any plane xx’,

MX = RA x = Wbx / L

MX = Wbx / L

Maximum Bending Moment