1674 - O'Hagin

Total Vents:

274

Vent Placement Recommendations

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

137

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

137

Total Square Feet of Attic Space to be Ventilated

Total Square Feet of Attic Space to be Ventilated:

2,800

Code Required Method:

1/150 (EXCEPTION)

Calculation:

2,800 ÷ 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 = 2,688.48 sq. in. of Code Required Ventilation

Square Inches Provided:

(274 x 98.75) = 27,057.50 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.