7-41. The double-web girder is constructed from two plywood sheets that are secured to wood members at its top and bottom. The allowable bending stress for the wood is Jallow = 8 ksi and the allowable shear stress is allow = 3 ksi. If the fasteners are spaced s = 6 in. and each fastener can support 600 lb in single shear, determine the maximum load P that can be applied to the beam. ---6in. 2 in. 2 in. 10 in. 2 in. 2 in. B

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Loads and Reactive Forces

Loads are the external influences that a beam experiences under its working conditions. For instance, a beam may be subjected to shear loads, twisting loads, bending moment, and axial loads during its working conditions. Engineers primarily deal with beams and trusses in the civil engineering domain. Due to the influence of loads, it is very crucial to determine the induced stresses and deformation values. These values give an insight into the critical area of the beam that needs to be worked upon to make it fail-safe.