Snow Drift
Snow Drift
(OP)
I'm designing a beam that is carrying both a high roof as well as a low roof and was wondering if the snow load on the high roof would be reduced and by how much due to the snow from the high roof blowing off and drifting on the low roof?






RE: Snow Drift
Mike McCann
MMC Engineering
RE: Snow Drift
RE: Snow Drift
BA
RE: Snow Drift
RE: Snow Drift
BA
RE: Snow Drift
RE: Snow Drift
I think the only exception to this is for sliding slow loads which are assumed to be caused by balanced snow load sliding from one roof to another and thus would not need to be considered at the same time but you will want to check this with ASCE to be sure.
Lastly, remember that code level snow loads are often due to multiple slow events. Thus, it's not inconceivable that one snow storm could occur during a high wind event and deposit drift loads and then the other could occur with limited wind and add a balanced load on top of everything.
Maine EIT, Civil/Structural.
RE: Snow Drift
Maine EIT, Civil/Structural.
RE: Snow Drift
Maine EIT, Civil/Structural.