STTUATION.Given a rectangular beam having a width of

$300$ mm and an efrective depth of $450$ mm $.$ The beam is

reinforced for tension only with a steel area of $1500m{m}^2$

$f\text{'}c=28$MPa $fy=415$MPa. Use $1\mathrm{.}2D+1\mathrm{.}6L.$

Find the nominal moment capacity of the beam section in

$kN-m.$

A$.253$

B$.356$

C$.485$

D$.652$

Find the uniform ultimate load $Wu(k\frac{N}{m})$ that the beam

can carry in a simple span of $6$ m based on the ullimate

moment capacity $M_u=M_n.$ Use strength reduction

factor $=0\mathrm{.}9.$

A$.50\mathrm{.}6$

B$.25\mathrm{.}2$

C$.70\mathrm{.}4$

D$.12\mathrm{.}3$