PROBLEM $3$

A singly reinforced simply$-$supported beam, with a span of $10$ m $,$ is to be designed with $d$~~$1\mathrm{.}8b,$~~$0\mathrm{.}4{}_{0\mathrm{.}004},f_c^{\text{'}}=28$MPa and $f_y=420$MPa. The beam carries $q_D=4\mathrm{.}2k\frac{N}{m}$ and $q_L=5\mathrm{.}6k\frac{N}{m}.$ Use No$.10$ stirrups.

PROBLEM $4$

Redo problem $(3)$ using $$~~$0\mathrm{.}9{}_{0\mathrm{.}004}.$

Concerte $1$ show me the details of problem $3$&$4$