4067 - O'Hagin

Total Vents:

Vent Placement Recommendations

High / Exhaust Vents Needed:
(Within 3' of Ridge Assembly)

Low / Intake Vents:
(Within Lower 1/3 of Attic)

Total Square Feet of Attic Space to be Ventilated

Total Square Feet of Attic Space to be Ventilated:

1,369

Code Required Method:

1/150 (EXCEPTION)

Calculation:

1,369 ÷ 150 = 9.13 sq. ft. of Code Required Ventilation

Convert square feet of code-required ventilation to square inches

Square Feet of Code Required Ventilation:

9.13

Calculation:

9.13 x 144 = 1,314.72 sq. in. of Code Required Ventilation

Square Inches Provided:

(20 x 72) = 1,440 sq. in.

Composition shingle

Low Profile (Tapered)

NET FREE VENTILATION AREA
Noncombustible, Corrosion-Resistant Wire Mesh	72 sq. in.

Figures based on independent evaluation reports.