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Using the method of consistent deformations, determine the force in member AD. Let P = 17 kN, L1 = 6 m, and L2 = 3 m. Assume EA = constant.

Identify the moment equation that corresponds to MAB. Let w = 2.0 kip/ft, L1 = 16 ft, and L2 = 20 ft. Assume EI = constant.

Using the slope-deflection equations below, determine the beam slope at C. Let P1 = 12 kips, P2 = 11 kips, L1 = 20 ft, L2 = 10 ft, and L3 = 15 ft. Assume EI = constant.MAC = EIθC / 15 + 26.67MCA = EIθC / 7.5 + –53.33MCE = EIθC / 7.5 + 41.25MEC = EIθC / 15 + –41.25

On this quiz, “maximum” refers to the highest vertical point on the influence graph and “minimum” refers to the lowest vertical point on the graph.Draw the influence line for the vertical reaction at A. What is the line’s minimum value? Let L1 = 4 m and L2 = 13 m.

Determine the deflection at B that would be caused by the concentrated moment if the middle support was not there. Let M = 18,800 lb·in., a = 80.83 in., b = 59.17 in., and EI = 57 × 106 lb·in.2. Note that b = (a + b)[1 – sqrt(3)/3].

Assuming that the live loads are transmitted to the bottom chords of the truss, draw the influence line for the force in member CD. What is the line’s maximum value? Let L = 18 ft.

According to the textbook, fabrication errors cause stresses in indeterminate structures.

According to the textbook, temperature changes cause stresses in determinate structures.

Assuming that the live loads are transmitted to the bottom chords of the truss, draw the influence line for the force in member BF. What is the line’s maximum value? Let L = 14 ft.

A truck exerts wheel reactions P1 = 8 kips and P2 = 4 kips on the deck of a bridge. Determine the maximum positive shear at C. Assume the truck only travels in the direction shown. The influence lines for VC and MC are shown, along with the peak values of the influence lines.