A staggered bolted connection is shown in the figure. The plates are 12 mm thick and 350 mm wide. The bolts are 25 mm in diameter. Final bolt hole is 3.2 mm larger than the bolt diameter. For this problem, a = 80 mm, b = 40 mm, c = 55 mm, and d = 90 mm.
Calculate the critical net area of the angle bar
Calculate the design strength.
Calculate the allowable strength.