Problem #$2$

$30$ point

the continuous beam below $(3$ spans, $30ft$ each$)$

is subjected to a dead load $($including self weight$)=3\mathrm{.}0\frac{k}{f}t$

and live load $=2\frac{k}{f}t$

concrete strength

$f_c^{\text{'}}=,5000$ psi

$F_y=,60000$ psi

Steel yield strength

The beam is not built integrally with the supports

$3\mathrm{.}1$ Determine the design moments using ACl coefficient at sections A and $B$

$3\mathrm{.}2$ Design the beam for flexural at sections A and $B$

$3\mathrm{.}3$ Design the beam for shear $($one uniform spacing between stirrups is required$)$

Note: consider the critical shear is the one determined by the ACl coefficients