Wind Zones For Flat Roof

Interior zones zone 1 have the lowest load and account for about 80 of the roof surface.

Wind zones for flat roof.

Here they are with their pros and cons. While asphalt shingles remain the most common roofing material even in high wind zones there are others worth considering. Per asce 7 10 buildings are composed of 5 different zones depending on the wind loading they are subjected to. Duo pitch roof wind load zones.

Has the lowest load. They represent the perimeter of the roof and account for approximately 15 of the roof surface. Examples of asce 7 16 roof wind pressure zones for flat gable and hip roofs. Other roofing materials suitable for high winds.

See roof costs in your area. Mono pitch roof wind load zones. These zones are defined as follows. W net g 1 231 kn m 2 zone g extends between zones f.

W net f 1 758 kn m 2 zones f start at both frontal corners of the roof and extend for length e 10 1 000 m and width e 4 2 500 m for zone g. Barrel vault roof wind load zones. It should be ensured that the roof deck substrate is sound and suitable to take the fixing load if there are any doubts or the project is a refurbishment then a fixing pull out test must be performed to determine the. For the different pressure zones on the flat roof the following net pressures are obtained.

End zones zone 2 have a higher load than zone 1. The significance of these changes is the increase in pressures that must be resisted by roof construction elements subject to component and cladding wind loads including but not limited to roof framing and connections sheathing. Printed with permission from asce. Flat roof wind load zones.