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Strength of Materials

Bending Stress in Sections -I

In a simply s...

Question

In a simply supported wooden beam under uniformly distributed load, a hole has to be made in the direction of width at midspan to provide a pipeline. From structural strength point of view, it would be advisable to have the hole made at

A

the bottom

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B

the top

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C

mid-depth

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D

1/4 depth either from the top or the bottom.

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Solution

The correct option is C mid-depth
At mid span of the beam, the beam is subjected to bending stresses only. These stress are zero at neutral axis or mid-depth so hole should be made at mid depth.

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