Address:
938 GREENWOOD AVE. SAN BERNARDINO, CA 92407
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
3910'
Required Method:
1/150
Calculation:
3910 ÷ 150 = 26.07 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
26.07
Calculation:
26.07 x 144 = 3754.08 sq. in of Code Required Ventilation
Square Inches Provided:
(54 x 72) = 3888 sq. in
Square Inches Needed:
26.07 x 144 = 3754.08 sq. in
Where do I install vents graphic
Vent Placement
High / Exhaust Vents Needed:
27
Low / Intake Vents Needed:
27
Total Vents Needed:
54
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Tile Profile Low (Tapered)
Wire Mesh 72 sq. in
Figures based on independent evaluation reports.
Comp Roof Drawing
Questions?