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Shear stress in a beam

by a_hargy
Tags: beam, shear, stress
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Sep8-10, 11:23 PM
P: 16
1. The problem statement, all variables and given/known data
A simply supported beam with its cross-section is shown in the attached figure 2.2. For the beam and loading shown, determine the largest shearing stress in the section n~n and shearing stress at point a shown in cross-section of the beam.

2. Relevant equations

3. The attempt at a solution
So to find the shearing stress at n-n I developed a shear diagram. Is it correct that the shear stress at n-n would be the area under this diagram from point A to n-n? That being 110kN x 0.3m which gives 33kPa?
I am stuck on how to calculate the shearing stress at the point shown in the cross section. Any help would be greatly appreciated.

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