: In Problems $6\mathrm{.}1$ through $6\mathrm{.}5,$ Determine the adjusted reference design values and the strength

capacities for the following members. In all cases, consider the dry$-$service conditions, the normal

temperature range, and the no$-$incision application. In practice, all loading combinations must be

checked. However, in these problems only a single load condition should be considered for each

member, as indicated in the problem.

$6\mathrm{.}1$ Floor joists are $2$ in$.\backslash$times $6$ in$.$ at $18$ in$.$ on center $($OC$)$ of Douglas Fir$-$Larch #$2.$ They support

the dead and live loads.

$6\mathrm{.}2$ Roof rafters are $2$ in$.\backslash$times $8$ in$.$ at $24$ in$.$ OC of Southern Pine #$2.$ The loads are dead load and

roof live load.

$6\mathrm{.}3$ Five floor beams are of $4$ in$.\backslash$times $8$ in$.$ dimension lumber Hem Fir #$1,$ spaced $5$ ft apart.

The loads are dead and live loads.

$6\mathrm{.}4$ Studs are $2$ in$.\backslash$times $8$ in$.$ at $20$ in$.$ OC of Hem Fir #$2.$ The loads are dead load, live load, and

wind load.