Example $10-1$

Design the residential floor system of Figure $10-9.$ The live load is $40$psf$,$ and the total dead load, including an allowance for the self weight of the members, is $10$ psf$.$ Use hem$-$fir No$.2,$ and assume that the deflection due to live load is limited to $($L$)/(360).$

$($a$)$ Select a typical joist.

$($b$)$ Design a lintel beam for the $10-$ft opening using two elements nailed side by side and of the same size as the joist.Figure $10-9$