How to solve

Problem #$4-$ Rectangular Beam Design for Moment $($TENSION

REINFORCEMENT ONLY$)$

Design a simply supported rectangular reinforced concrete beam with

tension steel only to carry a service dead load of $1\mathrm{.}35$kip$\frac{s}{f}t$ and a

service live load of $1\mathrm{.}90$kip$\frac{s}{f}t.($The dead load does not include the

weight of the beam.$)$ The span is $18$ ft $.$ Assume No$.3$ stirrups. Use $f_c^{\text{'}}=$

$4,000$ and $f_y=60,000.$ See Figure.