Extracted text: Ceiling Pr. 4-47: A suspended walkway is modeled as a rigid bar and supported by steel rods (E =30,000 ksi) as shown in Figure. The rods have a diameter of 2 in., and the nut has a contact area with 36 f the bottom of the walkway is 4 in.2 The weight of the walk length is w 725lb/ft. Determine (a) the axial stress in the steel rods; (b) the average bearing stress between the nuts at A and D and the walkway. per unit 20 ft 10