Shed Roof Pitch Snow Load

Basically the steeper the pitch the better it can shed snow and rain.

Shed roof pitch snow load.

For example a roof with 3 feet of light snow has an estimated roof load of 60 pounds per square foot 3 ft depth x 20 lb ft2 ft depth density 60 lb ft2. Personally unless you live in an area of extreme snow load i would recommend you incorporate a shed roof pitch of between 4 12 and 6 12 for optimum results. The higher the roof pitch the more often the snow slides off. Slopes greater than 6 12 will tend to shed snow regardless of the texture of the material on them so roof slopes should be configured to avoid shedding anywhere people might be walking or exiting.

The key factors are usually snow loading requirements adequate slope and the use of snow guards when needed. If you are building a new roof however consider the climate to determine the correct pitch and proper materials. This will extend the life of your roof. There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch the most obvious of which is the roof s ability to shed or withstand heavy snow rain or wind.

Remember that pitch is calculated as the height or rise of a roof pitch over 12 inches of horizontal run. This range makes up the bulk of new roofs being built on homes and outbuildings in the u s. Ground snow load value. Therefore if your roof rises 4 inches over the course of 12 inches of horizontal run then your roof pitch is 4 12.

On multiple factors including. Metal roofing systems have a good track record of performance in harsh winter environments as long as they are properly designed. A medium pitched roof is one that has a pitch of between 3 12 and 7 12. If necessary rebuild or fortify them to withstand worst case scenario snow loads and meet local building standards.

Snow weight length width cos pitch snow load the weight of snowis measured in kgor lbs. You should know the roof weight limits for your barns and outbuildings. As stated in the video speed squares have useful markings on them from 0 to 12. So in general the shallower pitch can be more dangerous with bigger slides.

The flip side to this is that it also becomes more expensive to build both in materials and logistical difficulty. The safest way to determine the pitch of an existing roof is to measure from inside your attic using a level tape measure and pencil. It is determined based. Wind exposure of roof.

Roof snow load is defined as the weight of snow on the roof surface used in design of the building structure ibc 2012.