The bearing capacity of a bolt in a double-lap joint (two shear planes) as per IS 800 is calculated as:
Choose the correct answer
2.5 kb d t fub (for each shear plane, double shear = 2 times)
2.5 kb d t fub (bearing on connected ply)
5.0 kb d t fub
2.5 kb d (2t) fub
Correct Answer
B. 2.5 kb d t fub (bearing on connected ply)
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IS 800 Cl. 10.3.2.1: Bearing capacity Vdpb = 2.5 kb d t fub / gamma_mb. Here t = thickness of thinnest ply in bearing, d = bolt diameter, fub = UTS of bolt. Double shear increases shear capacity, but bearing is limited by the plate.
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