In barbending schedule why is o.42*D is taken. Means why o.42 only???

Question Posted / soham vilas jakate

In barbending schedule why is o.42*D is taken. Means why o.42 only???..

Answer / arghya das

that is 1.42d-d=0.42d
(1.42d comes from 1/sin45) 45 degree crank bar.

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