Address:
317 Margaret Ave Los Angeles CA 90022
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
2800'
Required Method:
1/150
Calculation:
2800 ÷ 150 = 18.67 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
18.67
Calculation:
18.67 x 144 = 2688.48 sq. in of Code Required Ventilation
Square Inches Provided:
(274 x 98.75) = 27057.5 sq. in
Square Inches Needed:
18.67 x 144 = 2688.48 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
137
Low / Intake Vents Needed:
137
Total Vents Needed:
274
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Wire Mesh 98.75 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?