PlumbingCivil
Stormwater Drainage Inspection & Test Plan
ITP for stormwater drainage systems covering roof drainage, downpipes, pits, subsurface drainage, OSD systems and connection to authority infrastructure per AS/NZS 3500.3.
12 checklist items
3 hold points
1 witness points
Checklist Preview
Roof Drainage
Requires sign-offP/F
Gutter sizing per hydraulic designP/F
Downpipe sizing per designP/F
Overflow provisions installedP/F
Leaf guards installed where specifiedBelow-Ground Stormwater
Requires sign-offP/F
Pit construction per design detailsP/F
Pipe grades per hydraulic design Hold
P/F
Pipe jointing per manufacturer specsP/F
Grated inlet levels per civil drawingsOn-Site Detention
Requires sign-offP/F
OSD tank volume per hydraulic report Hold Witness
P/F
Orifice plate sizing verifiedP/F
OSD water tightness test satisfactoryP/F
Connection to authority infrastructure approved Hold
Prefer AI?
Generate a custom Plumbing ITP in seconds
Describe your scope and our AI builds a complete ITP with hold points, witness points, and sign-off roles — tailored to your project.
Free AI ITP Generator →Ready to use this template?
Sign up, import this ITP template into your project, and start inspecting. 14 days free — no credit card required.
Get started free