A $2$x$4$ rail is attached to two $4x4$ posts using nine $16d$ common nails at each connection.

Use ASD to answer the following questions. Assume dry fabrication but wet in$-$service

conditions and normal temperatures. All members are No$.1$ Douglas Fir$-$Larch and are

not incised. Use a load duration factor of $C_D=1\mathrm{.}0$ and assume all spacing requirements are

satisfied $(C_{}=1\mathrm{.}0).$

What is the shear strength of each nailed connection?

Assuming the $2x4$ is a simple beam, what is the maximum load, $P_a,$ that can be applied

at midspan considering shear failure of the nailed connections?

What is the maximum load that can be applied considering flexural failure of the

beam?

What is the maximum load that can be applied considering shear failure of the beam?