A 4-in.-by-8-in. (S4S) Douglas fir timber beam is supported on a 16-ft simple span and is...

A 4-in.-by-8-in. (S4S) Douglas fir timber beam is supported on a 16-ft simple span and is subjected to the loads shown. The uniformly distributed line load does not include the weight of the beam (the beam weight, a gravity load, should be considered). Find the maximum tensile and compressive stresses.

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