Roof Overhang Wind Loads

Guide to the wind load.

Roof overhang wind loads.

Warehouse model in skyciv s3d as example. 3 21 2013 2 asce 7 10 section 27 1 2 conditions a building whose design wind loads are determined in accordance with this chapter shall comply with all of the following conditions. When building a structure it is important to calculate wind load to ensure that the structure can withstand high winds especially if the building is located in an area known for inclement weather. A simplified procedure and an analytical procedure.

When the canopy is similar in size to the building which is common in residential applications see image below the canopy is to be designed for mwfrs roof overhang wind loading. The building is a regular shaped building or structure as defined in. In order for a structure to be sound and secure the foundation roof and walls must be strong and wind resistant. The simplified procedure is for building with a simple diaphragm roof slope less than 10 degrees mean roof height less than 30 feet 9 meters regular shape rigid building no expansion joints flat terrain and not subjected to special wind condition.

Tables are included that provide data for commercial buildings with monoslope roofs and overhangs as well as design pressures for mwfrs for wind parallel and normal to roof slopes and normal and parallel to ridge lines. Site location from google maps. The analytical procedure is for. Components can be part of the mwfrs when they act as shear walls or roof diaphragms but they may also be loaded as individual components.

Examples of components include fasteners purlins girts studs roof decking and roof trusses. Skyciv released a free wind load calculator that has several code reference including the asce 7 10 wind load procedure. Asce 7 10 provides two methods for wind load calculation. Please see below for asce 7 10 figure 28 6 1 case b zoning.

Components receive wind loads directly or from cladding and transfer the load to the mwfrs. Wind induced loads on overhangs have been studied in atmospheric boundary layer abl wind tunnels in the past. Mwfrs main wind force resisting system roof overhangs. The zones for roof overhangs are different from the zones for a monoslope roof.