What is the shear area of a rolled steel I-section for minor axis bending?
(Where h-overall depth; b-breadth; tw-thickness of web; tf-thickness of flange)
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A.
htw
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B.
2btf
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C.
btf
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D.
htf
Correct Answer:
B. 2btf
Explanation:
For a rolled steel I-section subjected to minor axis bending, the shear force is primarily resisted by the flanges rather than the web. According to standard structural steel design codes, the effective shear area in this orientation is calculated as the sum of the areas of the two flanges. Therefore, the shear area is expressed as 2btf, where b represents the flange width and tf represents the flange thickness.
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