By what factor do you increase the resistance to bending (about y-y axis) if you were to use W18 × 76 beam over W8 × 31?
What will be an ideal response?
The bending of a beam depends on type of loading, boundary conditions, etc.
Considering only the I values: W18 × 76 --- I =152 in4 and for W8 × 31--- I =37.1 in4,
you increase the resistance to bending by a factor of 4.
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