Answer the next eight questions using the following information:

A simply supported "built$-$up$"$ timber beam of $13$ ft span will support a uniformly dead load of $60$ lbs$/$ft and live load of $90$ lbs$/$ft distributed over its entire length. The built$-$up beam will consist of $2$x$12$ sections made from $"$No$.1$ Dense Southern Pine$$ timber. Use a cumulative adjustment factor of $0\mathrm{.}90$ to determine the allowable stresses.

For the above$-$mentioned built$-$up beam, the maximum Shear $($Vmax$)$ value is:

For the above mentioned built$-$up timber beam, the maximum$$moment $($Mmax$)$ in lbs$-$inch is:

The number of $2"$x$12"$ sections needed to resist bending failure in the beam is$/$are:

The required moment of Inertia $($Ireq$)$ for this beam is:

What would be the final design for this beam?

For this built$-$up beam, what would be the $"$W$/$D$"$ ratio:

Based on the W$/$D ratio, would a "built$-$up$"$ beam be efficient and economical"?

The number of $2"$x$12"$ sections needed to resist shear failure in the beam is$/$are:

Group of answer choices