why breadth of beam is shorter than (or equal to )its depth?
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Answer Posted / jyotirmaya
we know that σ=My/I, where σ=bending stress
M=bending moment or moment of
resistance.
y=distance of the extreme end of
fiber from the neutral axis.
I=moment of inertia about the
neutral axis.
So, in order to decrease the bending stress and hence
increase the strength of a beam, we need to increase the
"I" value by increasing the depth and decreasing breath...
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