Is Too Much Snow On A Roof A Problem?
I have practiced news for yous; there'southward probably nothing to worry about.
The required roof snow loads for Minnesota aren't clearly spelled out anywhere, but the numbers can be found by using Tabular array R301.two(1) of the Minnesota Administrative Rules. This table says that roof snow loads equal .7 times the ground snow load. To detect the ground snowfall load, we apply section 1303.1700 of the Minnesota Administrative Rules. The southern portion of Minnesota, which includes the Twin Cities metro area, uses a footing snow load of 50 pounds per square human foot. The northern portion uses 60 pounds per square human foot.
For the Twin Cities metro expanse, the roof snow load equals 35 pounds per square foot, or .7 x 50. So how much snow does this equal? It depends. As everyone knows, cold fluffy snowfall is very lite, while wet snowfall tin can be extremely heavy. The nautical chart below, courtesy of Paul Schimnowski, P.Eastward., gives some examples of snow loads.
I weighed a section of undisturbed snowfall, using a 5-gallon bucket, which has a footprint of approximately 2/three of a square foot.
This weighed nine.v lbs, so a full square pes would weigh less than xv pounds, or 15 psf.
In that location'due south naught to worry about
If you lot have a properly constructed roof, you shouldn't take to worry about your roof collapsing. We're not even halfway in that location. Non only that, just snow on a sloped roof typically isn't equally deep. Not only that, just snowfall drifts are the result of light, fluffy snow bravado around; not heavy wet snow. Non only that, but moisture evaporates from snow over time, making it lighter and lighter as fourth dimension goes on. And finally, 35 pounds per square pes is aminimumrequirement.
If you have ice dams, however, removing the snow is the good thing to do. Use a roof rake or rent someone to practise information technology professionally.
DO Non walk on your roof to remove snowfall. This is extremely unsafe. The person pictured above may or may non accept fallen off of the roof right after I took this motion picture. When professional ice dam companies remove snowfall from roofs, they wear safety harnesses.
Almost the Author:
Reuben Saltzman is the president and owner ofStructure Tech Habitation Inspections
Source: https://www.familyhandyman.com/article/is-too-much-snow-on-a-roof-a-problem/
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