Problem $8$

Refer to $RC-006$ for minimum requirements.

A reinforced concrete beam has the following given data:

Beam depth, $h=600mm$

Tension steel reinforcements:

$6-28mm\frac{O}{?}$ bars in $2-$layers

with $3$ bars per layer

Clear bar covering $=40mm$

Stirrups $=10mm\frac{O}{?}$

Concrete, $f_c^{\text{'}}=28$MPa

Steel bars, $f_y=415$MPa

Determine the following:

If beam width is $300mm,$ determine the horizontal clear spacing

$($mm$)$ of the bars. Assume that bars in a layer are perfectly

aligned.

The value of the minimum width $(mm)$ of the beam based on

code requirements for cover and spacing limits$.$

Determine the effective depth, $d,$ and depth $d_t$ of the beam in $mm.$

If the outer layer has $4$ bars, and the other layer has $2$ bars,

determine the effective depth, $d(mm)$ of the beam.