A rectangular concrete column $600$ mm x $450$ mm

is reinforced with $1625$ mm $$ bars.

Ties $=12$ mm $$ spaced at $100$ mm on center

Concrete, fc $=27\mathrm{.}5$ MPa

Steel fyv for lateral ties $=275$ MPa

Effective cover to centroid of vertical steel reinforcement on

each side $=65$ mm Shear strength reduction factor $=0\mathrm{.}65$

$1.$ Calculate the shear capacity of the column along the x$-$axis.

a$.714$ kN b$.619$ kN c$.535\mathrm{.}5$ kN d$.464$ kN

$2.$ Calculate the allowable factored shear force along the xaxis.

a$.681$ kN b$.1048$ kN c$.535\mathrm{.}5$ kN d$.714$ kN

$3.$ Calculate the shear strength Vc of the column using simplified method if it is subjected to an

axial compression force Nu $=200$ kN$.$

a$.232$ kN b$.244$ kN c$.226$ kN d$.250$ kN