Problem$($s$)$

Problem $1.$ Analyze the following beam $($see figure below$)$ using both ASD and LRFD methods

to check if the beam section has adequate bending and shear capacity. Also check if it meets

deflection criteria of $\frac{L}{240}.$

The beams are spaced greater than ${24}^{\text{'}\text{'}}$ apart ani

are subjected to a total load $W_{IL}(=$dead $($D$)+$ liv

$($L$))$ of $45\mathrm{.}33l\frac{b}{f}t.$ The beams are DF$-$L No$.1$

$3"$x$14"$ and are not laterally braced, i$.$e$.,$ latera

buckling must be checked. Assume the followin!

conditions: dry$-$service conditions $($EMC

percent$)$ and normal temperature.

Problem $2.$ Design the following girder $($see figure below$)$ using both ASD and LRFD methods.

The girder is to be Hem$-$Fir No$.1$ and Better, lateral bracing is a concern, span length is $15ft.$

Assume the girders are spaced greater than ${24}^{\text{'}\text{'}}$ apart under dry$-$service conditions $($EMC $<mn>1</mn><mn>9</mn>$

percent$)$ and normal temperature.

Hint: Initially size the girder for bending. Then check section for bending and shear capacity along

with deflection criteria of $\frac{L}{240}.$