Inspection process
Witness point
A witness point is a step in the inspection and test plan where a party (the owner's rep, engineer, or a specialty inspector) is given the chance to watch the work being done or a test being run. It differs from a hold point in one way that matters: if the party doesn't show up within the notice period the plan sets, the crew is allowed to carry on. The invitation is mandatory; the attendance is not.
Run it with the Photo Gate
Inspection and test plan (ITP)
11 items · 8 photos required
Why it matters
Witness points let a project keep moving without a busy inspector becoming a bottleneck, while still giving that party a real opportunity to see the work firsthand. The catch is discipline: the notice has to be genuine and documented, or a skipped witness point turns into a dispute later.
How it shows up on site
The ITP marks the point W, names who is invited, and states the notice, often given in working days. The crew logs the invitation and the response, then either records what the witness observed or notes that the party waived attendance and work proceeded.
In RTI the notice, the attendance or waiver, and the photos taken at the point live on the same step, so the record shows the party had their chance whether or not they took it.
Guides that use it
- How to inspect structural steelInspect steel erection in order (anchor bolts, plumb and level, bolted and welded connections) against the erection drawings and the inspection plan.
- How to write an inspection and test planBuild an inspection and test plan that lists every check and test for a feature, names who releases each, and marks the hold and witness points.
- How to set hold points and witness pointsDecide which steps in an ITP are hard stops and which are invitations to observe, name who releases each, and set the notice periods that make them stick.
Checklists that put witness point to work
Free, field-ready checklists, each with the photo every item needs before it can be submitted.
Related terms
- Hold pointA stop in the inspection and test plan where work cannot continue until a required party inspects and signs off the release.
- Inspection and test plan (ITP)A document that lays out, activity by activity, what gets inspected or tested, who does it, against which standard, and what record it produces.
- Quality control planThe project-specific document that defines how a contractor will control quality: who inspects what, to which standards, and how it's recorded.
- SignoffA named party's recorded approval that a step, inspection, or feature meets its criteria and the work is released to proceed.
- Surveillance inspectionAn unannounced or periodic check of work while it is being performed, verifying the crew is following the approved process, not just the result.
- Source inspectionInspection of material or equipment at the fabricator's or supplier's shop before it ships, rather than waiting for it to arrive on site.
Knowing the term is step one. Proving it is the job.
RTI holds the submit button until every mandatory item is answered and the photos are attached, then chains the record so it can be proven untouched later.
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