Building Loading - Snow Exposure

(1995 ASCE, 1997 SBC, 1999 BOCA, 2000-2018 IBC, 1998-2010 ASCE 7, MAST (8^th), 2015 MNBC, 2014 WICBC)

(Revised: 06/02/2019)

Snow Exposure 1 - Fully Exposed: Roofs exposed on all sides with no shelter afforded by terrain, higher structures or trees. Roofs that contain several large pieces of mechanical equipment, parapets that extend above the height of the balanced snow load (h_b), or other obstructions are not in this category.

Snow Exposure 2 - Partial Exposed: All roofs except as indicated in Snow Exposures 1 and 3.

Snow Exposure 3 - Sheltered: Roofs located tight in among conifers that qualify as obstructions.

See also:

§ Building Loading - Snow Load