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The beam is constructed from three boards. (Figure 1) The allowable shear stress for the wood is τallow=335 psi. Each nail can resist a shear force of 395 lb.
Part A
Determine the maximum loads P that it can support.
Express your answer to three significant figures and include appropriate units.
Part B
What is the maximum allowable spacing s of the nails used to hold the top flange to the web? (Consider only regions AC and BD.)
Express your answer to three significant figures and include appropriate units.
Part C
What is the maximum allowable spacing s of the nails used to hold the bottom flange to the web? (Consider only regions AC and BD.)
Express your answer to three significant figures and include appropriate units.