Roof Loading Wisconsin

The north zone middle zone and the south zone are identified on the roof load zone.

Roof loading wisconsin.

The value of cs shall be determined by the following. 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. 2018 international building code. Sps 321 subchapter 2 for any location in the state of wisconsin.

If your structure has a sloped or flat roof you still need to calculate the flat roof snow load. Roof loads are a downward vertical force on the home. 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. 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.

Wisconsin has not adopted the international residential code irc and utilizes its own uniform dwelling code udc for all residential structures. Use our wisconsin roof snow loads map to easily determine the roof design snow load wisconsin administrative code. Roofs are under a lot of pressure. 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. 2018 international building code. Chapter 15 roof assemblies and rooftop structures. May be reduced for roof slopes greater than 30 by multiplying the snow load by cs.

However a south roof load zone home cannot be installed in either a middle or north roof load zone. See pdf for diagram. Chapter 16 structural design. Sps 321 02 1 b 2.

L roof live load including any permitted live load reduc tion. The loads shall be assumed to act vertically over the roof area pro jected upon a horizontal plane. Snow loads specified in s. L live load except roof live load including any per1nit ted live load reduction.

The balanced snow load is applied everywhere where the roof structure is located. In addition to estimating the roof loading it s important to know the loading the roof can resist. H load due to lateral pressure of soil and water in soil. Also extremely relevant to roofs with sections on rain loads snow loads and wind loads.

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. 2002 wisconsin enrolled commercial building code. Load limits on the roof of a building. Roof load live load design is affected by the shape of the roof whether it is flat curved or pitched.

Support the minimum snow loads listed on the zone map.