Snow Loads Of Pvc Roofing

In heavy snow areas 500 series or greater panels are recommended and closer spacing of purlins should be considered.

Snow loads of pvc roofing.

If you want to calculate these values by hand use the following formulas. To figure out the load on your roof take the depth of snow in feet and multiply it by the weight of a cubic foot of snow. Snow load thickness density the result snow load or the pressure exerted by the snow has the units of kn m or lbs ft. If necessary rebuild or fortify them to withstand worst case scenario snow loads and meet local building standards.

Each state has a listing of building code and applicable guidelines for snow loads as well as details about where the snow load information may be found or purchased. 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. You should know the roof weight limits for your barns and outbuildings. You can also find the load per square meter or square foot of roofing by opening the advanced mode.

Snow can either blown from the low side of the roof towards the high side or is blown off the higher area of the roof onto the lower projected side. If the snow weighs 10 pounds per cubic foot and there are 1 5 feet on the roof each square foot of the roof is getting 15 pounds of pressure. While panels may not fail under heavy snow loads strain at fastening points can cause slight cracking. These distinctive roofs with overhanging eaves feature four medium pitched sides and are characteristic of dutch architecture and help disperse snow loads in northern climates.

Snow load of a greenhouse is based on expected ground accumulation greenhouse roof slope whether the structure is a gutter connect or free standing greenhouse and if the greenhouse is heated or unheated during the time of snowfall. All roof products deteriorate over time and pvc has a tendency to shrink pulling the seams lifting corners and potentially causing leaks. The purpose of this web site is to provide ground snow load analysis information and data gathered from all 50 states. Table is based on section properties or actual load tests available upon request.

Older pvc roofs in cold weather are prone to shattering. The amount of additional snow load or surcharge depends on the difference in height of the two adjacent roofs and the lengths of roof perpendicular to the drop in height.