Situation $8$: A rectangular beam $250500mm$ is

reinforced with $3-25$ mm bars at an effective

depth of $400mm.$ Determine the following

required, use $f_c^{\text{'}}=28$MPa and $f_y=420$MPa.

What is the depth of compression block?

a$.116\mathrm{.}51mm$

c$.122\mathrm{.}29mm$

b$.103\mathrm{.}95mm$

d$.130\mathrm{.}35mm$

What is the stress of tension reinforcing?

a$.362$MPa

c$.170$MPa

b$.402$MPa

d$.420$MPa

Determine the ultimate moment capacity of

the section.

a$.193kN-m$

c$.229kN-m$

b$.215kN-m$

d$.202kN-m$

What is the maximum steel reinforcement for

singly reinforced action?

a$.2955m{m}^2$

c$.2064m{m}^2$

b$.2523m{m}^2$

d$.3202m{m}^2$