Question:-
A bracket (shown in figure) is rigidly mounted on wall using four rivets. Each rivet is 6mm in diameter and has an effective length of 12mm.

Direct shear stress (in MPa) in the most heavily loaded rivet is
Option (A)
4.4
Option (B)
8.8
Option(C)
17.6
Option(D)
35.2
Correct Option:
(B)
Question Solution:
Direct load=1000N on the bracket fixed at wall. There is no eccentricity therefore P at each rivet = (1000 /4) = 250N

\ Shear Stress (c) = (P/A) = (250 / (p/4xb2) = 8.8 Mpa
question-answer-faq-2366