HVACCommercial
HVAC Ductwork Inspection & Test Plan
ITP for sheet metal and flexible ductwork installation covering duct fabrication, support spacing, joint sealing, insulation and air leakage testing per AS 4254.
13 checklist items
3 hold points
1 witness points
Checklist Preview
Duct Fabrication & Materials
Requires sign-offP/F
Sheet metal gauge per duct size and pressure classP/F
Duct dimensions per mechanical drawingsP/F
Stiffener and reinforcement spacing compliantP/F
Flexible duct lengths within maximum limitsInstallation
Requires sign-offP/F
Hanger and support spacing per AS 4254P/F
Duct joints sealed to specified leakage class Hold
P/F
Fire and smoke dampers at rated boundaries Hold
P/F
Access doors provided for dampers and cleaningP/F
Duct routing maintains service clearancesInsulation & Testing
Requires sign-offP/F
Insulation R-value per NCC Section JP/F
Vapour barrier intact and joints sealedP/F
Air leakage test within class limits Hold Witness
P/F
Internal duct cleanliness verifiedPrefer AI?
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