Example $1$

Select a beam size and bars using ACI strength method of the beam ABCD shown in figure. $f_{c^{\text{'}}}=30$MPa;$fy=400$ MPa.$WDL=44k\frac{N}{m}$;$WLL=50k\frac{N}{m}.\frac{d}{b}=1\mathrm{.}5.$ Use $=(0\mathrm{.}3-0\mathrm{.}5)$ pmax. Check hmin, from deflection considerations using ACI Table $9\mathrm{.}5($a$).$ Use $75mm.$ effective cover.