The two 12-ft beams shown in Fig. 3-16 are to be moved horizontally with respect to
each other and load P shifted to a new position on CD so that all three reactions are
equal. How far apart will R 2 and R 3 then be? How far will
P be from D?
P is 8 ft to the left of D.
R2 and R3 are 6 ft apart.