1. Draw the influence lines for the reactions at supports A and C the shear and moment at…

1. Draw the influence lines for the reactions at supports A and C, the shear and moment at section B, and the shear just to the left of support C.

2. (a) Draw the influence lines for reactions , , and Rc of the beam in Figure P12.4. (b) Assuming that the span can be loaded with a 1.2 kips/ft uniform load of variable length, determine the maximum positive and negative values of the reactions.

 

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