A 6m long beam is supported by hinge at point A(left end) and by roller at point C (3m right of A). A unit load moves along the beam coming from the left end, and point B and D are 2m and 4m from point A respectively. 1. Find the ordinate at point D of the influence line diagram for reaction at the left end. a. -1/3 b. -2/3 c. -1/2 d. -3/4 2. Find the ordinate at point D of the influence line diagram for shear at B. a. -1/3 b. -2/3 c. -1/2 d. -3/4 3. Find the ordinate at point D of the influence line diagram for moment at B. a. -1/3 b. -2/3 c. -1/2 d. -3/4

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Equilibrium and Support Reactions

Civil engineers deal with structures that are composed of several members connected or with individual members such as beams and columns. To analyze such structures, the condition of statics must be applied. Under the static condition, the members are considered to be in equilibrium under the action of forces, that is, the members are assumed to be having negligible velocity.