Homework #$8$b

$12$ Node Model Beam and Girder Design

Based on your model from Homework #$8$a$,$ each individual student should develop the following:

Design calculations for the typical beam and the typical girder shown in the diagram below. The beam and girder calculations should include checks for bending, shear and deflection. Be sure to draw clear free body diagrams, shear diagrams and moment diagrams as part of the solution. Assume the following:

Dead Load $=10$ psf$,$ Live Load $=20$ psf

$F_y=3$ksi,$F_{yy}=0\mathrm{.}5$ksi,$E=2,000$ksi

Safety Factor $=2\mathrm{.}0$

Beam width $=4",$ Girder width $=8"$

Round the beam depth up to the nearest inch

No ceiling