Maurice Pettiford

OBO - W 21.6 Estimating Window Infiltration Rates

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Title Page

Document No.
Audit Title
Client / Site
Conducted on
Prepared by
Location
Personnel

1. Window Fit Factor

Window Type: Fit: Factor:
Casement Average 3.6
Double Hung Average 2.2
Loose 2.5
Hinged Average 1.0
Loose 5.4
2. Rate of Infiltration (cfm / ft of crack)
[Average Wind Speed (mph) ✖️ 0.0263 ➖ 0.083] ✖️ Window Fit Factor = Infiltration Rate (cfm / ft of crack)
3. Total Infiltration Rate (cfm)
Infiltration Rate (cfm / ft of crack) ✖️ Crack Length (ft / window) ✖️ Number of Windows ✖️ 0.001 = __________ Infiltration Rate (1,000 cfm)

Maurice Pettiford

OBO - W 21.6 Estimating Window Infiltration Rates

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Print as PDF

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