3 4 ‐ in. UNF bolt with rolled threads is used in a joint having a soft gasket for which the clamped member stiffness is only half the bolt stiffness. The bolt initial tension corresponds to F i = 16,000 d , d in inches. During operation, there is an external separating force that fluctuates between 0 and P . For this application, there is negligible bending of the bolts. Estimate the maximum value of P that would not cause eventual bolt fatigue failure. Estimate the maximum value of P that would not cause joint separation. [Ans.: (a) Approximately 5600 lb, (b) 36,000 lb]