10-11-2010, 08:30 PM
Hello,
Some rules of thumb.
Single storey building lightweight roof covering up to 40m span (Rafters/Columns/Bracings/Purlins/Rails) = 27-30kg/m2.
Office buildings up to 5 storeys, Floor areas = 50kg/m2 , Roofs Areas = 35kg/m2.
Hospitals, heavy loadings and vibration considerations = 80kg/m2
The above are typical values and will give a rough estimate.
Some rules of thumb.
Single storey building lightweight roof covering up to 40m span (Rafters/Columns/Bracings/Purlins/Rails) = 27-30kg/m2.
Office buildings up to 5 storeys, Floor areas = 50kg/m2 , Roofs Areas = 35kg/m2.
Hospitals, heavy loadings and vibration considerations = 80kg/m2
The above are typical values and will give a rough estimate.