Question $3$: $3$ sheses

A rectangular beam having $b=250mm$ and $d=450mm$ spans $4\mathrm{.}5m$ face to face of simple supports. It is reinforced with three $f28$ bars that continue uninterrupted to ends of the beam. The beam to carry $D=18\mathrm{.}5K\frac{N}{m}($including beam weight$)$ and $L=54K\frac{N}{m}$ both are uniformly distributed loads along the span. stirrups are $f10$ vertical $U$ stirrups. $Fy=420$MPa,$f{c}^{\text{'}}=28$MPa Required:

$1-$ Caluculate the maximum shear force

$2-$ Calculate the shear at $d$ from face of support

$3-$ Calculate the concrete shear strength

$4-$ Show the regions for max. spacing and for no shear reinforcement

$5-$ Show at least three zones of shear reinforcement spacing $s$