vent area per sq ft of floor??


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Old 11-04-07, 05:08 PM
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vent area per sq ft of floor??

Hi:

I can't find or remember the amount of net free vent area (attic) required per sq ft of floor space.

Sure would appreciate getting me straightened out.

IS there an on-line source for reading the UBC (like there is for the NEC)?

Cheers,
s/Mike
 
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Old 11-05-07, 05:38 AM
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Attic ventilation is usually determined using 1/300 the square footage of the attic space. You then split this surface area between soffit screens and either ridge vents or pot vents.
 
 

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