A rectangular simply supported beam has an effective span of $2$ ft and carries a

service live load of $6,500lb$ per linear foot and no external dead load except for its

self$-$weight.

Given:

$l=28ft($simply supported$)$; $b=14in.$; $d=23\mathrm{.}5in$;$h=26in$;$f_c^{\text{'}}=5,000$; and

$f_y=60,000.$

Use #$4$ stirrups.

$($a$)$ Compute the maximum shear at the critical point.

$($b$)$ Compute the contribution of concrete to shear.

$($c$)$ Compute the ACI minimum shear requirement.

$($d$)$ Check if the cross$-$section provided is adequate.

$($e$)$ Identify the cutoff point for the beam where no shear reinforcement is

required.

$($f$)$ Identify the cutoff point for the beam where minimum shear reinforcement is

required.

$($g$)$ Compute the area of shear reinforcement and the spacing at the critical point.

$($h$)$ Compute the maximum spacing at critical point according to ACI Code.

Note: Additional location where spacing can be increased to satisfy ACI

requirement, if needed is not required.