Problem $7\mathrm{.}16$ Textbook $($modified$)$

Roof trusses, spanning $24$ ft$.$ at $4$ ft$.$ on center, support a dead load of $16$ psf and a snow load of $50$ psf only. The lumber is Hem Fir #$1.$ The truss members are connected by a single row of $3/4-$in$.$ bolts. Design the bottom chord.

By truss analysis, the factored tensile force $($Pu$)$ in the bottom chord members is $8\mathrm{.}7$ k$.$ Assume the dry wood and normal temperature conditions.

$($Ans$.2$x$6$ in$.)$

The permissible total load deflection is $($L$/240)$ as per Table $7\mathrm{.}3$ Textbook. Assume CM $=$

Ct $=$ Ci $=1\mathrm{.}0$

$($Ans$.$: $2$x$6$ in$.)$