reinforced concrete class

Problem $4.,(25\%)$

An RC beam, subjected to two concentrated loads and a uniform distributed load, has a shear demand distribution shown in the figure. The width and height of the beam are $35cm$ and $60cm,$ respectively. The supports at the two ends of the beam have lengths of $30cm.f^{\text{'}}=28$MPa and $f_y=f_{yt}=420$MPa. Use $D13$ stirrups for design:

Determine the spacing of stirnups at the critical section.

Determine the region where the stirrup spacing of $30cm$ is allowed $($find the distance from the face of the support$).$

Determine the region where stirrups are not required $($find the distance from the face of the support$).$ Please use the stirrup spacings obtained at $1),2),$ and $3)$ to design the transverse steel of the entire beam and draw the results.

Es for steel is $200$GPa

$*$Note: Any assumptions should be clarified in your calculation.

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