Problem $2(10$ points$)$

A visually graded timber is used as a post to support a roof. The timber is made of Douglas Fir Larch $($North$)$ with Select Structural grade. The roof supports dead load and is subject to snow load. Determine the following adjustment factors:

a$)$ Load duration for the dead load.

b$)$ Load duration factor for the combination of dead, snow, and wind loads.

c$)$ Wet service factors $($bending$,$ shear, and modulus of elasticity$)$ for moisture content of more than $\backslash (19\backslash \%\backslash ).$

d$)$ Temperature factors $($bending$,$ shear, and deflection$)$ for sustained temperatures of $110$ to $140$ degrees $\backslash ($ F $\backslash ).$