How Much Does Snow Weight On Roof

Psf pounds per square foot.

How much does snow weight on roof.

28 40 light fluffy snow. Calculating snow load on your roof depends on two factors. Ten inches of fresh snow equates to about five pounds per square foot which means your roof likely can support four feet of fresh snow. Calculate the weight of the snow on your roof.

The weight of the snow. Per square foot of roof space so anything more than 2 feet of snow could be too much for your roof to handle. Please remember that the numbers given by this calculator are just an approximation and are by no means 100 accurate. There is a calculation for this too.

The roof deck collects the snow load and transfers the weight to the rafters. The roof of any building is the area subject to the greatest weight temperature and moisture extremes. How much does snow weigh. A roof in an older building may be underbuilt and therefore more vulnerable to structural problems.

Calculating the weight of snow is useful when you need to know the total weight it adds for example to calculate the weight on a roof. Fresh light and fluffy snow will weight much less than the dense packed or wet variety. Snow loading is the downward force exerted on structures by the weight of accumulated snow. Unsurprisingly wet snow is the heavy stuff.

If it snows 5 of wet snow it will weigh about 12 5 pounds. All numbers are approximate. 1 foot of snow on the roof 8 000 lbs 4 tons 7 psf 2 feet of snow on the roof 16 000 lbs 8 tons 14 psf 3 feet of snow on the roof 24 000 lbs 12 tons 21 psf. Snow which is just frozen ice crystals varies in weight by its volume and density.

Our snow load calculator helps you to make the decision when to remove the snow from your roof by comparing the weight of snow with the load carrying capacity of the roof. For any rafter the portion of the roof deck that transfers this load is the tributary area. Calculating snow load on roof. How much does snow weigh on a roof.

How much snow a roof can hold depends on the type of snow roofline and material among other considerations. Two feet of old snow and two feet of new snow could weigh as much as 60 lbs. Here are a few examples of the weight of snow on a roof. Per square foot of roof space which is beyond.

Evaluate your risk of roof top snow ice accumulation snow usually melts off of steep sloped roofs slopes greater than 3 inches of slope in 12 inches of horizontal distance more quickly than flatter roofs. Wet snow can be nearly three times heavier than dry.