Problem $(1)$

A rectangular reinforced concrete cross$-$section is subjected to a bending moment of a factored value of $300kN.m.$ The beam has width of $250mm$ and depth of $600mm.$ it is required to design the cross$-$section using one of the designed curves, knowing that Fcu$=35$ Mpa, and $Fy=400$Mpa

Problem $(2)$

A rectangular reinforced concrete cross$-$section is subjected to a bending moment of a factored value of $600kN.m.$ The beam has width of $250mm$ and depth of $500mm.$ it is required to design the cross$-$section using one of the designed curves, knowing that Fcu$=25$ Mpa, and $Fy=280$Mpa

Problem $(3)$

Design a double reinforced concrete section subjected to $=500kN.$m using design charts, knowing that fcu $=30$Mpa,$Fy=360$Mpa, depth $(T)=700mm$

Problem $(4)$

Design a double reinforced concrete section subjected to $=500kN.m$ using design charts, knowing that fcu$=30$Mpa,$Fy=360$Mpa, depth $(T)=700mm$

Problem $(5)$

Draw and design a $($T$)$ reinforced concrete section subjected to $=250kN.m$ using design charts, knowing that fcu $=30$Mpa,$Fy=360$Mpa, depth $(T)=600mm,B=1500mm,b=120mm,$ and $Ts=100mm$

Problem $(6)$

Draw and design a $($T$)$ reinforced concrete section subjected to $=400kN.$m using design charts, knowing that fcu $=25$Mpa,$Fy=400$Mpa, depth $(T)=600mm,B=420mm,b=120mm,$ and $Ts=80mm$