(a) All beams of the frame in Figure P13.15 have the same cross section and carry a unifor...

(a) All beams of the frame in Figure P13.15 have the same cross section and carry a uniformly distributed gravity load of 3.6 kips/ft. Estimate the approximate value of axial load and the moment at the top of columns AH and BG. Also estimate the shear and moment at each end of beams IJ and JK. (b) Assuming that all columns are 12 in square (I = 1728 in.⁴) and the moment of inertia of all girders equals 12,000 in.⁴, carry out an approximate analysis of the second floor by analyzing the second-floor beams and the attached columns (above and below) as a rigid frame.

Figure P13.15: