The frame shown in Figure 3 1 has internal pins at points B C and D and is supported by a pin at point A and a roller at point E The loading consists of two concentrated loads and a point moment as shown in the figure a Calculate the support reactions at points A and E b Calculate the internal resultant loadings normal and shear forces and bending moment at the midpoints of segment CD and BD 6 in B 9 in in 9 in 9 in 500 lb 700 lb D 2 kip in 12 in 12 in