What is an ITP in construction?

An Inspection and Test Plan (ITP) is a quality assurance document used in construction to define inspection activities, hold points, and witness points at key stages of work. It specifies what needs to be checked, by whom, and records the results for audit and compliance purposes.

How much does HoldPoint QA cost?

HoldPoint QA charges $45 AUD per active project per month for 1–5 projects, and $35 per project per month for 6 or more active projects. There are no per-seat fees or per-document charges. Projects start as draft (free) until the first document is added.

Can external clients sign ITPs without an account?

Yes. HoldPoint QA sends a secure sign-off link via email. External signatories — clients, principal's representatives, or engineers — can review the full ITP checklist and sign digitally without needing an account or app.

Does HoldPoint generate ITP PDFs automatically?

Yes. When an ITP is approved, HoldPoint automatically generates a branded PDF containing all checklist results, inspection notes, photos, and signatures. PDFs are regenerated if any information changes.

What pressure testing is required in a plumbing ITP?

AS/NZS 3500 specifies water supply testing at 1.5 times the working pressure (minimum 500 kPa) for a minimum of 30 minutes with no visible drop. Drainage testing requirements vary but typically include a standing water test or air test. The ITP should record the test pressure, duration, start and end gauge readings, and the inspector's sign-off.

Do I need separate ITPs for above-ground and below-ground plumbing?

Not necessarily, but many contractors separate them because the inspection requirements differ significantly. Below-ground work has hold points at trench bedding, pipe laying, and backfill. Above-ground work has hold points at pressure testing and commissioning. A combined ITP works for smaller projects.

What about gas installation in the plumbing ITP?

Gas installation should either be a separate section in the plumbing ITP or a standalone document. It has specific hold points at pipe installation inspection, pressure testing (using nitrogen or air — never gas), regulator installation, and final commissioning with gas. Gas work is subject to additional regulations beyond AS/NZS 3500.

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Free Plumbing & Hydraulics ITP Generator

Generate a complete Inspection & Test Plan for plumbing and hydraulics in seconds. Covers pipe installation, pressure testing, backflow prevention, hot water commissioning, and drainage — with hold points for pressure test sign-off.

Hydraulics-specific hold points and witness points
Aligned with relevant Australian Standards
PDF emailed to you instantly — no login required
Ready to use on-site or submit to your principal contractor

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Trade type

Describe your scope of work

Include trade, materials, key activities, and any relevant standards (e.g. AS 3600). More detail = better ITP.

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Background

What is a Hydraulics ITP?

A plumbing and hydraulics ITP covers all inspection and testing requirements for water supply, sanitary plumbing, stormwater drainage, and gas installation. It defines what gets inspected at each stage, who performs the inspection, the acceptance criteria, and where mandatory hold points apply.

Plumbing is a concealment-heavy trade — most pipework is buried in trenches or hidden in walls and ceilings. A complete ITP register with pressure test records and photographic evidence is essential for council certification and for defending against defect claims during the defect liability period.

In Australia, plumbing ITPs reference AS/NZS 3500 (Plumbing and Drainage) as the primary standard, along with any state-specific plumbing regulations and the project hydraulic specification.

Quality checkpoints

Hydraulics ITP Hold Points & Witness Points

The AI generator automatically includes these checkpoints based on your scope description. Hold points require mandatory sign-off before work proceeds; witness points notify the relevant party but don't stop work.

Hold Points

Work stops until signed off

Water supply pressure test (AS/NZS 3500 requirements)
Sewer and drainage pressure or water test
Backflow prevention device testing and commissioning
Final commissioning and flow rate verification

Witness Points

Party notified, work can continue

Pipe installation and support spacing
Below-ground drainage falls and bedding
Hot water system installation and tempering valve
Insulation of hot water and chilled water pipework

Applicable Australian Standards

AS/NZS 3500 — Plumbing and Drainage
AS 4032 — Thermostatic Mixing Valves

Common questions

Hydraulics ITP — Frequently Asked Questions

What pressure testing is required in a plumbing ITP?: AS/NZS 3500 specifies water supply testing at 1.5 times the working pressure (minimum 500 kPa) for a minimum of 30 minutes with no visible drop. Drainage testing requirements vary but typically include a standing water test or air test. The ITP should record the test pressure, duration, start and end gauge readings, and the inspector's sign-off.
Do I need separate ITPs for above-ground and below-ground plumbing?: Not necessarily, but many contractors separate them because the inspection requirements differ significantly. Below-ground work has hold points at trench bedding, pipe laying, and backfill. Above-ground work has hold points at pressure testing and commissioning. A combined ITP works for smaller projects.
What about gas installation in the plumbing ITP?: Gas installation should either be a separate section in the plumbing ITP or a standalone document. It has specific hold points at pipe installation inspection, pressure testing (using nitrogen or air — never gas), regulator installation, and final commissioning with gas. Gas work is subject to additional regulations beyond AS/NZS 3500.

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