Height of 25 psf snow?
Height of 25 psf snow?
(OP)
In our area the ground snow load is 25 psf and we typically design roofs for 25 or 30 (schools) psf of snow. What is the density of fresh snow? I am trying to figure out how many inches of fresh snow adds up to 25 psf.
Thanks,
Thanks,






RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
Density of wet snow is +- 500kg/m³, dry about 100kg/m³.
So 25 psf is about 10 inches of wet snow, or 50 of dry (fresh) snow. But you better grab a calculator 'cause I've surely messed up somewhere with your empirical stuff.
RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
In the high snow areas, an additional problem occurs, in that after several snow falls (with periods of partial melting) and/or heat loss through the roof, the layer against the roof may become ice. And you have a very good idea what that weighs.
RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
http://articles.chicagotribune.com/2011-10-08/news...
RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
RE: Height of 25 psf snow?
Freshly Fallen 6 pcf
Accumulated 19 pcf
Compacted 31 pcf
Rain or Snow 31 pcf
RE: Height of 25 psf snow?