Roof Loading Wisconsin

L roof live load including any permitted live load reduc tion.

Roof loading wisconsin.

Dwellings shall be designed and constructed to withstand either a horizontal and uplift pressure of 20 pounds per square foot acting over the surface area or the wind loads. The north zone middle zone and the south zone are identified on the roof load zone. Roof loads are a downward vertical force on the home. Support the minimum snow loads listed on the zone map.

If your structure has a sloped or flat roof you still need to calculate the flat roof snow load. However a south roof load zone home cannot be installed in either a middle or north roof load zone. In addition to estimating the roof loading it s important to know the loading the roof can resist. The loads shall be assumed to act vertically over the roof area pro jected upon a horizontal plane.

Load limits on the roof of a building. May be reduced for roof slopes greater than 30 by multiplying the snow load by cs. Sps 321 subchapter 2 for any location in the state of wisconsin. 2018 international building code.

L live load except roof live load including any per1nit ted live load reduction. See pdf for diagram. Snow loads specified in s. Chapter 15 roof assemblies and rooftop structures.

2002 wisconsin enrolled commercial building code. Chapter 16 structural design. Also extremely relevant to roofs with sections on rain loads snow loads and wind loads. On the upcodes website.

In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing. On the upcodes website. Use our wisconsin roof snow loads map to easily determine the roof design snow load wisconsin administrative code. 2018 international building code.

Roof load live load design is affected by the shape of the roof whether it is flat curved or pitched. Wisconsin has not adopted the international residential code irc and utilizes its own uniform dwelling code udc for all residential structures. The determination of the drift load that is required for unbalanced snow load cases requires the use of the ground snow load pg not the roof snow load. Sps 321 27 1 c c sloped roof snow loads.

Sps 321 02 1 b 2. The value of cs shall be determined by the following. Wisconsin s uniform dwelling code requires most homes to have a minimum snow load rating of 30 40 pounds per square foot lbs ft 2 with the greater requirement for northern wisconsin. The balanced snow load is applied everywhere where the roof structure is located.

H load due to lateral pressure of soil and water in soil.