Snow loads (ASCE 7)
In the Snow wizard (ASCE 7) you specify the snow loadcases to be set up from the following list:
-
Minimum Snow Load - for low sloped roofs
-
Balanced Snow load - uniform snow load and rain on snow load
-
Unbalanced Snow Load - the number of cases required being chosen to reflect the number of wind directions considered
-
Drift Snow Load
-
Rain on Snow Surcharge
Once set up these loadcases are standard loadcases so you can include them in combinations in the normal manner.
Note: All loads and lengths of loads are
assumed to act on a horizontal projection of the roof surface.
Minimum snow load
Loads would need to be manually applied to this loadcase on completion of the snow wizard - the only snow load applicable being Uniform Snow.
Balanced snow load
This loadcase is automatically populated on completion of the snow wizard
Unbalanced snow load
Loads would need to be manually applied to these loadcases on completion of the snow wizard - both Uniform Snow and Valley Snow loads may be applicable, (depending on the model geometry).
Drift snow loads
Loads would need to be manually applied to these loadcases on completion of the snow wizard - the only snow load applicable being Local Drift Snow.
Rain on Snow Load Surcharge
This loadcase is automatically populated on completion of the snow wizard.
