PROBLEM $1$:

A rectangular concrete beam has a width of $300mm$ and an effective depth of $550mm.$ The beam is simply supported over a span of $6m$ and is used to carry a uniform dead load of $20k\frac{N}{m}$ & a uniform live load of $40k\frac{N}{m}.$ Assume $fc\text{'}=21$MPa and $fy=312$MPa.

Use:

$W_u=1\mathrm{.}2W_{DL}+1\mathrm{.}6W_{LL}\frac{?}{M}$

$()(simplysupported)$

Determine:

A$.$ Ultimate Moment Capacity, Mu

B$.$ Required Tension Steel Area, As