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Question: 2 in a typical floor support a short timber post...

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2. In a typical floor support, a short timber post is capped with a steel channel to provide a larger bearing area for the joists. The joists are 4x12 in rough cut. The steel base plate is provided to increase the bearing area on the concrete footing. The load transmitted from each floor joist is 500ON. Find the following: a) The minimum length of channel required to support the joists if the maximum allowable bearing stress perpendicular to the grain is 400 psi (calculate to MPa). b)The minimum size of post required to suport the load if the maximum stress allowed in compression parallel to the grain is 1,200 psi (calculate to MPa) c) The size of base plate required if the allowable bearing on concrete is 450 psi(calculate to MPa). STEEL HANNBL

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