A.A beam is shown below. Which of the given diagrams represents a valid shape for the bending moment diagram of the beam? B.A steel beam has a singly symmetric I-shaped cross section as shown. The elastic section modulus (in.3) about the major centroidal axis is most nearly: A. 54 B. 63 C. 66 D. 73 C.A parabolic vertical curve is being designed to connect two grades with G1 = +5% and G2 = _3%. If PVC is at station 117 + 50.00, the elevation (ft) of the PVT is most nearly: A. 307.21 B. 309.45 C. 311.12 D. 313.02
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