(Solved): please hurry and help   4. (20 Pts) The beam is A992 steel and has yield stress \( \sigma_{y ...

please hurry and help

 

4. (20 Pts) The beam is A992 steel and has yield stress \( \sigma_{y}=36 \mathrm{ksi} \) and shear yield stress of \( \tau_{y}=22 \mathrm{ksi} \). The design requires a safety factor (F.S.) of 2 for the allowable normal and shear stress from the yield stress. The reaction forces at the supports are \( R_{A}= \) \( 6.4 \mathrm{kip} \uparrow \) and \( R_{B}=18.8 \mathrm{kip} \uparrow \). (a) Draw the shear and moment diagrams. (10 Pts) (b) Select the lightest-weight and shortest depth wide-flanged beam from the provided table that can support the applied loadings. (5 Pts) (c) Determine if proposed beam also satisfies the shear condition. (5 Pts)