P$1$: For a $2$X$6$ No$.2$ southern pine beam, $7ft$ long, with a moisture content of $15\%,$ spaced

at ${16}^{\text{'}\text{'}}$ o$.$c$.$ with blocking at $3^{\text{'}}{6}^{\text{'}\text{'}}.$ and subjected to room temperature, and with preservative

treatment:

a$)$ Find $F{b}^{\text{'}}$

b$)$ Find Fv$\text{'}$

c$)$ Find $E^{\text{'}}$