An eccentrically loaded lap riveted joint is to be designed for a steel bracket as shown. The bracket plate is 25 mm thick. All rivets are to be of the same size. Load on the bracket, Rivet spacing
=200mm
; load arm,
e=400mm
. Permissible shear stress is 60 MPa and crushing stress is 120 MPa . Determine the size of the rivets to be used for the joint.