A rectangular concrete beam having a width of $250$ mm and an effective depth of $350$ mm will be design to carry the factored design loads as stated. The steel yield strength fy $=275$ MPa and concrete strength fc$\text{'}=20\mathrm{.}7$ MPa. If the compression steel is found necessary, it will be placed $60$ mm from the extreme compression fiber of the beam. a$.$ Determine the number of pieces of $20$ mm diameter tension steel for a singly reinforced section reinforced with maximum steel for tension control. b$.$ Determine the number of pieces of $20$ mm tension reinforcements if the beam is to carry a factored design moment of $80$ kN$.$m c$.$ Determine the number of pieces of $20$ mm tension reinforcements if the beam is to carry a factored design moment of $135$ KN$.$m