Question

A cement pavement of thickness 18 cm has two lanes of total width 7.2 m with a longitudinal joint in middle. The slab has coefficient of friction and unit weight 1.5 and $2400kg/m^3$ respectively. Area of longitudinal steel per metre length of slab to resist stress due to seasonal variation of temperature is __________ $m{m}^2$. (Allowable stress in steel is $1400kg/c{m}^2$)

• A. 166.63
• B. 222.17
• C. 148.11
• D. 333.26

Answer 1

The correct option is A 166.63


$\frac{f\times \gamma \times b\times h}{2}={\sigma }_{st}\times A_{st}$
$\frac{1.5\times 2400\times 7.2\times 0.18}{2}=1400\times {10}^4\times A_{st}$
$A_{st}=166.63m{m}^2$