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$7-41$ The double$-$web girder is constructed from two plywold shorts that are secured to wood members at its top and bottom. The allowable bending stress for the wood is Reas$-8$ k ind the allowlle shear stress is ham $=3kg.$ If the fasteners are spaced s $=6$ in and each fastener can support $600$ lb in single shex, determine the maximum load $P$ that can be applied to the beam. complete calculation for $P$ for fle following caser

Faluec of bolos we shear flow calcularies

Falue due to slear stuess shear attersi calculations

Fulue diso to somal atress normal stress calolation.

The smallest value of $P$ that sesults in failue is maximum load that can be applind