Roof Snow Load Support

The dead load is constant and is estimated as 10 pounds per square foot for wood framed construction.

Roof snow load support.

Basing on the roof parameters you specified in the first section our snow load calculator displays the maximum allowable snow cover thickness and snow weight. 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. Make sure to not wait for too long though. If the weight of the actual snow load exceeds the weight a structure was designed to support the roof or even the entire structure can fail.

P s c s p f. The sloped roof snow load p s shall be obtained by multiplying the flat roof snow load p f by the roof slope factor c s. The roof load is composed of a dead load and a live load. Overall a plan should be established by greenhouse operators before winter weather arrives.

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. To provide additional support in double poly covered greenhouses two by fours can be placed under weight bearing bow and purlin connections however snow removal may still be required. The thermal factor c t from table e 3 determines if a roof is cold or warm slippery surface values shall be used only where the roof s surface is unobstructed and sufficient space is available below. The term snow load refers to the downward force on a structure s roof by the weight of accumulated snow and ice.

Determine the load per square foot that the roof must support. It also informs you whether you should immediately remove some of the snow or you can wait a little bit longer.