Duct Construction Specs: leakage_class
ASHRAE duct construction specifications: sheet metal gauge thickness and weight for galvanized, uncoated, and stainless steel ductwork; duct leakage percentages by leakage class and flow ratio; and maximum allowable fan system leakage by HVAC system type
| data type | gage | leakage class (dimensionless) | leakage pct at 0p5 inwg (%) | leakage pct at 10 inwg (%) | leakage pct at 1 inwg (%) | leakage pct at 2 inwg (%) | leakage pct at 3 inwg (%) | leakage pct at 4 inwg (%) | leakage pct at 5 inwg (%) | leakage pct at 6 inwg (%) | leakage pct at 8 inwg (%) | qfan per as cfm per ft2 (cfm/ft2) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| leakage_class | CL12_Q2 | 12 | 3.8 | 26.8 | 6 | 9.4 | 12.3 | 14.8 | 17.1 | 19.2 | 23.2 | 2 |
| leakage_class | CL12_Q2p5 | 12 | 3.1 | 21.4 | 4.8 | 7.5 | 9.8 | 11.8 | 13.7 | 15.4 | 18.5 | 2.5 |
| leakage_class | CL12_Q3 | 12 | 2.5 | 17.9 | 4 | 6.3 | 8.2 | 9.8 | 11.4 | 12.8 | 15.5 | 3 |
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