The beam BE shown is used for hoisting machinery. If is anchored by two bolts at B and C; it rests on a parapet wall. Note that the bolt is threaded with d= 22mm at the root of the threads. If this hoist can be subjected to a load of 9 kN, determine the stress in bolt BD and the maximum bearing stress at C given that the maximum allowable stress at A is 70 MPa

The beam BE shown is used for hoisting machinery. If is anchored by two bolts at B and C; it rests on a parapet wall. Note that the bolt is threaded with d= 22mm at the root of the threads. If this hoist can be subjected to a load of 9 kN, determine the stress in bolt BD and the maximum bearing stress at C given that the maximum allowable stress at A is 70 MPa