Select the lightest W$8$ section that will resist a service tensile load D$=80$ kips and

L$=140$ kips. The member is to be $30$ ft long and is assumed to have two lines of bolt

holes in each flange $($one line of bolt holes on each side of the web for each flange$)$ and

one line of holes in the web. Assume there are four bolts in each row of bolts along the

longitudinal direction and the bolt holes are spaced $3$ inches along the bolt line. All holes

are for $7/8-$in bolts. Use A$992-$grade $50$ steel.