Uniformly distributed dead load: 1 kip/ft
• uniformly distributed live load: 3 kip/ft (this can move anywhere. it can be present or absent anywhere. place it for maximum influence)
• (1) 10 kip live point load (it can move anywhere, but there’s only one 10kip load. place it for maximum influence, in each case)
1. draw the influence line for the vertical reaction at a, then determine the maximum positive (upward) and negative (downward) reaction magnitudes at a, as applicable, given the following loads: note: pinned foundation at a, roller foundation at b, pinned connection at c, roller foundation at d.
2. draw the influence line for the internal shear at pinned connection c, then determine the range of shear magnitudes at c.
3. draw the influence line for the internal moment at e, then determine the maximum positive and negative moments at e.