$(20$ pts$)$ A $4$x$12$ beam is used under a uniform load of $6,600$ lbs$.$ Fb$=1,350$ psi and Fv$=180$ psi. $(30$ pts$)$ The figures below show two different configurations for the same plan layout $(10$ ft $x$

$30ft).$ Design both of them with the joists and beams based on bending and calculate

deflection. Take the loads and material characteristics the same as those in Question $1.$ Take

the o$.$c$.$ distance as $14in.$ Use LRFD Method.

a$)(20$ pts$)$ Specify the joists and beams according to both of the given layouts.

b$)(10$ pts$)$ Which configuration would you pick? Why?

Use ASD Method.

a$)$ Is the beam safe for shear?

b$)$ What is the maximum span that this beam can have based on flexure if the unit

load is $100$ lb$/$ft$?$