SITUATION $07-$ A rectangular beam with width $b=320mm$ and effective depth $d=640mm$ is provided with $10$ mm vertical closed stirrups with $fy=400$MPa. Assume $f{c}^{\text{'}}=25$MPa and $Vu=200KN.$ Using simplified calculation,

$18.$ What is the shear strength carried by the concrete?

a$.151$ KN

b$.131$ KN

c$.171$ KN

d$.174$ KN

$19.$ What is the shear strength carried by the stirrup?

a$.65$ KN

b$.55$ KN

c$.75$ KN

d $93$ KN