Has the lowest load.
Wind zones for flat roof.
While asphalt shingles remain the most common roofing material even in high wind zones there are others worth considering.
This zone accounts for approximately 80 of the roof surface represented in the interior zones of the roof.
Here they are with their pros and cons.
Flat roof wind load zones.
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.
Barrel vault roof wind load zones.
These zones are defined as follows.
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Duo pitch roof wind load zones.
They represent the perimeter of the roof and account for approximately 15 of the roof surface.
Interior zones zone 1 have the lowest load and account for about 80 of the roof surface.
W net g 1 231 kn m 2 zone g extends between zones f.
Mono pitch 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.
The roof zone describes the amount of wind load that is subjected to the roof.
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.
Printed with permission from asce.
Per asce 7 10 buildings are composed of 5 different zones depending on the wind loading they are subjected to.
For the different pressure zones on the flat roof the following net pressures are obtained.