An angle can be used as purlin when slope of the roof truss is
a) between 40° and 70°
b) less than 30°
c) greater than 30°
d) less than 45°
An angle can be used as purlin when slope of the roof truss is
a) between 40° and 70°
b) less than 30°
c) greater than 30°
d) less than 45°