Question

The slope of a roof truss is 33${}^{\circ }$ ( access is not provided except maintainance), live loads on the roof truss is________N/m${}^2$.

• A. 1500
• B. 750
• C. 290
• D. 400

Answer 1

The correct option is D 400

$\text{When roof of slope}>{10}^{\circ }$

$Liveload=[750-20(\theta -10\left)\right]$

$\nless 400N/m^2$

$\theta ={33}^{\circ }$

$Liveload=750-20(33-10)$
$=290N/m^2$
$\nless 400N/m^2$