THe bracket shown is made of cold drawn steel with Sy=400MPa and Su=480 MPa, and is fastened to a beam made of the same material by five rivets that are made of a steel with Sy=300 MPa and Sut=365...

THe bracket shown is made of cold drawn steel with S_y=400MPa and S_u=480 MPa, and is fastened to a beam made of the same material by five rivets that are made of a steel with S_y=300 MPa and S_ut=365 MPa. The thickness of the bracket and the beam are 12 mm and 16 mm respectively.Diameters of the rivets are 20 mm.

What safe load F(steady) can be supported by the riveted joint for a factor of safety of 2. Use distortion energy theory of failure.