Example 7 The joint shown is fastened together using two bolts. Determine the required diameter of the bolts if the failure shear stress for the bolts is Tail = 350 MPa. Use a factor of safety for shear of 2.5.

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All the pins are in double shear, and they each have a diameter of 14 mm. The average shear stress in each pin CANNOT exceed 70 MPa. What is the max magnitude of P that the beam can support

1. A solid square rod is cantilevered at one end. The rod is 0.8 m long and supports a completely reversing transverse load at the other end of 50 kN. The material is AISI 1060 hot-rolled steel (?? =370 MPa,?? =680 MPa ). Use a design factor of 2 and determine the dimensions of the square cross section for the following cases. Neglect any stress concentration. a. The rod must support this load for 100 cycles. b. The rod must support this load for 104 cycles. c. The rod must have infinite life.