11-53. The simply supported joist is used in the construction of a floor for a building. In order to keep the floor low with respect to the sill beams C and D , the ends of the joists are notched as shown. If the allowable shear stress for the wood is tallow = 350 psi and the allowable bending stress is s allow = 1700 psi, determine the smallest height h so that the beam will support a load of P = 600 lb . Also, will the entire joist safely support the load? Neglect the stress concentration at the notch. | |
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