A $300$ mm wide rectangular beam has an effective depth of d$=490$ mm$.$ Concrete compressive strength fc$\text{'}=27\mathrm{.}6$ MPa and steel yield strength fy$=276$ MPa. Compression steel if required ahall have its centroid $60$ mm from extreme concrete fiber. USE NSCP $2015$

$1.)$ Calculate the required tension steel area if the factored moment Mu$=600$ kNm

A$.4108\mathrm{.}152$

B$.$ Redesign

C$.1838\mathrm{.}606$

D$.6390\mathrm{.}356$

$2.)$ Calculate the required compression steel area if the factored moment Mu$=600$ kNm

A$.4108\mathrm{.}152$

B$.$ Redesign

C$.1838\mathrm{.}606$

D$.6390\mathrm{.}356$

$3.)$ Determine the total number of $25-$mm bars needed for combined compression and tension bars

A$.27$

B$.34$

C$.17$

D$.$ Redesign