How Much Does Snow Weight On Roof

If it snows 5 of wet snow it will weigh about 12 5 pounds.

How much does snow weight on roof.

Before the snow starts to fall and build up on the roof of your house take the time to know how much snow your roof can support. Unsurprisingly wet snow is the heavy stuff. Snow loading is the downward force exerted on structures by the weight of accumulated snow. How much does snow weigh.

Two feet of old snow and two feet of new snow could weigh as much as 60 lbs. How much does snow weigh on a roof. Per square foot of roof space so anything more than 2 feet of snow could be too much for your roof to handle. How much snow a roof can hold depends on the type of snow roofline and material among other considerations.

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. The roof deck collects the snow load and transfers the weight to the rafters. Calculating snow load on roof. Calculate the weight of the snow on your roof.

The weight of the snow. 28 40 light fluffy snow. 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. Wet snow can be nearly three times heavier than dry.

All numbers are approximate. Calculating snow load on your roof depends on two factors. With this information you re now likely wondering about the weight of snow load on your roof. Snow which is just frozen ice crystals varies in weight by its volume and density.

There is a calculation for this too. For any rafter the portion of the roof deck that transfers this load is the tributary area. 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. Here are a few examples of the weight of snow on a roof.

A roof in an older building may be underbuilt and therefore more vulnerable to structural problems. Per square foot of roof space which is beyond. The roof of any building is the area subject to the greatest weight temperature and moisture extremes. Psf pounds per square foot.

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. 3 5 inches of old snow is equal to one inch of water or about 5 lbs.