Address:
Alvarado Hill HOA - non fire zone (this is calculations for each unit)
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
1076'
Required Method:
1/300
Calculation:
1076 ÷ 300 = 3.59 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
3.59
Calculation:
3.59 x 144 = 516.96 sq. in of Code Required Ventilation
Square Inches Provided:
(8 x 72) = 576 sq. in
Square Inches Needed:
3.59 x 144 = 516.96 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
4
Low / Intake Vents Needed:
4
Total Vents Needed:
8
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 72 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?