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Determine the required minimum thickness t of member AB
Chapter 1, Problem 1-89(choose chapter or problem)
Determine the required minimum thickness t of member AB and edge distance b of the frame if P = 9 kip and the factor of safety against failure is 2. The wood has a normal failure stress of \(\sigma_{\text {fail }}=6 \ \mathrm{ksi}\), and shear failure stress of \(\tau_{\text {fail }}=1.5 \ \mathrm{ksi}\).
Questions & Answers
QUESTION:
Determine the required minimum thickness t of member AB and edge distance b of the frame if P = 9 kip and the factor of safety against failure is 2. The wood has a normal failure stress of \(\sigma_{\text {fail }}=6 \ \mathrm{ksi}\), and shear failure stress of \(\tau_{\text {fail }}=1.5 \ \mathrm{ksi}\).
ANSWER:
Problem 1-89
Determine the required minimum thickness t of member AB and edge distance b of the frame if P = 9 kip and the factor of safety against failure is 2. The wood has a normal failure stress of sfail = 6 ksi, and shear failure stress of tfail = 1.5 ksi.
Step by Step Solution
Step 1 of 4
It is necessary to determine t and b if the security is F.S. = 2 . Wood cancellation occurs when and
In the first step it is necessary to determine static influences.
We apply the conditions of equilibrium:
Refer to the free body diagram below.
Step 2 of 4