145 - 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:

1,257

Code Required Method:

1/150 (EXCEPTION)

Calculation:

1,257 ÷ 150 = 8.38 sq. ft. of Code Required Ventilation

Convert square feet of code-required ventilation to square inches

Square Feet of Code Required Ventilation:

8.38

Calculation:

8.38 x 144 = 1,206.72 sq. in. of Code Required Ventilation

Square Inches Provided:

(14 x 98.75) = 1,382.50 sq. in.

Composition shingle

Low Profile (Tapered)

NET FREE VENTILATION AREA
Noncombustible, Corrosion-Resistant Wire Mesh	98.75 sq. in.

Figures based on independent evaluation reports.