Roof Loading Wisconsin

May be reduced for roof slopes greater than 30 by multiplying the snow load by cs.

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. H load due to lateral pressure of soil and water in soil. On the upcodes website. 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 north zone middle zone and the south zone are identified on the roof load zone. 2018 international building code. Roofs are under a lot of pressure. 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. L roof live load including any permitted live load reduc tion. Sps 321 27 1 c c sloped roof snow loads. Roof loads are a downward vertical force on the home.

In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing. 2018 international building code. Also extremely relevant to roofs with sections on rain loads snow loads and wind loads. Support the minimum snow loads listed on the zone map.

Load limits on the roof of a building. See pdf for diagram. L live load except roof live load including any per1nit ted live load reduction. Roof load live load design is affected by the shape of the roof whether it is flat curved or pitched.

Use our wisconsin roof snow loads map to easily determine the roof design snow load wisconsin administrative code. On the upcodes website. 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.

2002 wisconsin enrolled commercial building code. Sps 321 02 1 b 2. If your structure has a sloped or flat roof you still need to calculate the flat roof snow load. Sps 321 subchapter 2 for any location in the state of wisconsin.

After you obtain the roof slope factor from those sections in asce 7 10 the balanced design snow load for the sloped roof can easily be calculated using equation 7 4 1. Snow loads specified in s. Chapter 16 structural design. The balanced snow load is applied everywhere where the roof structure is located.

Chapter 15 roof assemblies and rooftop structures.