Situation $1$: A rectangular beam has a

dimension of $b=300mm,h=600mm,$ and $d=$

$550mm$ and is reinforced with $4-25mm$ bars.

Use $f_c^{\text{'}}=35$MPa and $f_y=420$MPa.

What is the cracking moment of the beam

$(kN-m)?$

a$.77\mathrm{.}5$

c$.83\mathrm{.}9$

b$.66\mathrm{.}0$

d$.57\mathrm{.}8$

Determine the uncracked transformed

moment of inertia of the section $({10}^{6}m{m}^4).$

a$.6954$

c$.7405$

b$.6459$

d$.7045$

Calculate the stress $(MPa)$ in steel

reinforcement caused by a bending moment

of $55kN-m.$

a$.2\mathrm{.}91$

c$.18\mathrm{.}97$

b$.17\mathrm{.}63$

d$.16\mathrm{.}73$

Calculate the compressive stress $(MPa)$ in

the concrete caused by a bending moment

of $55kN-m.$

a$.2\mathrm{.}91$

c$.9\mathrm{.}21$

b$.17\mathrm{.}63$

d$.2\mathrm{.}04$