Shear Area (Av) for Steel I section

[abuh11]

Hi, could someone help explain the formula Av = A – 2btf + (tw + 2r)tf
but ≥ ηhwtw. Am I correct in assuming we only use the formula Av = A – 2btf + (tw + 2r)tf if it is larger than ηhwtw

 

[BAretired]

Av = tw.d sounds about right.

BA

 

[KootK]

Your interpretation is correct abuh11. The larger of the two expressions for shear area is used.

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