Problem $6$

Given Beam Data:

Beam width, $b_w=300mm$

Tension steel bars $=8-25mm$ equally$-$placed in $2$ layers

Effective depth to centroid of entire reinforcement, $d=512\mathrm{.}5mm$

Effective depth to centroid of outer layer reinforcement, $d_t=537\mathrm{.}5mm$

Concrete strength, $f{c}^{\text{'}}=42$MPa

Steel yield strength, $f_y=415$MPa

Determine the location of the neutral axis of the section.

Determine the value of strength reduction factor $$ for flexure in accordance with the $2010/2015$ NSCP$.$

Determine the design flexural strength of the section in $kN-m.$