Required information For a bolted assembly with six bolts, the stiffness of each bolt is kb = 2.4 Mlbf/in and the stiffness of the members is km= 18 Mlbf/in per bolt. An external load of 80 kips is applied to the entire joint. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. It is desired to find the range of torque that a mechanic could apply to initially preload the bolts without expecting failure once the joint is loaded. Assume a torque coefficient of K = 0.2. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the value of torque in units of lbf-in that should be specified for preloading the bolts if it is desired to preload to the midpoint of the values found in parts (a) and (b). Use the average value of the previously calculated values of Fi- The torque that should be specified for preloading the bolt is Ibf.in.