Determine the magnitude of the approximate bending moment at D in girder DE. Let w1 = 28 kN/m, w2 = 36 kN/m, L1 = 8 m, L2 = 7 m, and L3 = 6 m.

The floor of an apartment building is subjected to a uniformly distributed load of 38.7 psf over its surface area. Determine the axial load acting on column C.

Hydrostatic pressure acts in what direction?

The beam supports a single live load of 2,350 lb, a uniform live load of 400 lb/ft, a uniform dead load of 160 lb/ft. Determine the maximum positive shear that can be developed at point B. Assume the support at A is a pin and C is a roller. The influence lines for VB and MB are shown, along with the peak values of the influence lines.

Choose the equation that will give the largest factored load when D = 36 kip, L = 2 kip, Lr = 12 kip, and S = 20 kip.

Determine the deflection at B that would be caused by the distributed load if the middle support was not there. Let w = 9 lb/in., a = 51 in., and EI = 51 × 106 lb·in.2.

The floor system of a hospital laboratory consists of a 5-inch-thick reinforced concrete slab resting on three steel floor beams, which are in turn supported by two steel girders. The areas of cross section of the floor beams and the girders are 17.4 in.2 and 32.6 in.2, respectively. Determine the live load acting on beam AB.

The floor system of a heavy storage warehouse consists of a 3-inch-thick reinforced concrete slab resting on four steel beams (A = 19.1 in.2), which are supported by two steel girders (A = 33.4 in.2). The girders, in turn, are supported by four columns. Determine the live load acting on column A.

Determine the horizontal reaction force at A. Let P1 = 155 kN, P2 = 105 kN, P3 = 125 kN, and a = b = c = d = 2.5 m.

Which of the following equations is an example of an equation of equilibrium?