C$25/$S$420,$ fyd $/$fcd$/$fctd $=365/17/1\mathrm{.}2$ MPa, Kl$=290$ mm$2/$kN$.\backslash$rho l$=0\mathrm{.}0109,$ Cover$=40$ mm $($from the reinforcement axis$).$

a$)$ Calculate the tension reinforcement for the opening.

b$)$ Calculate the tension reinforcement for the support.

c$)$ Calculate the beam stirrup.

Notes:

$$ The tension reinforcement diameter is $20.$

$$ The stirrup reinforcement diameter is $8.$

$$ Approximate methods can be used if the conditions are met. However, rectangular section calculations cannot be made for the tabled section.

$$ Those who wish can also calculate with the general method.

$$ All minimum conditions and limitations will be complied with.