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Unformatted text preview: calculate the maximum permissible spacing s of the piles. ( Hint: Observe that the spacing of the piles may be governed by the load-carrying capacity of either the planks or the piles. Consider the piles to act as cantilever beams subjected to a trapezoidal distribution of load, and consider the planks to act as simple beams between the piles. To be on the safe side, assume that the pressure on the bottom plank is uniform and equal to the maximum pressure.) 3 in. s 5 ft Top view Side view 3 in. 12 in. diam. 12 in. diam. p 1 = 100 lb/ft 2 p 2 = 400 lb/ft 2 05Ch05.qxd 9/24/08 4:59 AM Page 427...
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- Fall '11