Quality concepts
Quality control (QC)
Quality control is the boots-on-the-ground check: you walk the installed work, measure it, test it and compare it to the drawings, submittals and acceptance criteria. Where quality assurance is the system set up beforehand, QC is what you do to a specific piece of built work to confirm it passes. It produces the evidence (the measurements, the photos, the test results) that says this run of installed work either meets the spec or gets written up.
Run it with the Photo Gate
Framing inspection checklist
13 items · 27 photos required
Why it matters
QC is where problems actually get found. A QA plan can be perfect on paper and work can still drift: the wrong fastener spacing, a slope that flattens out, a penetration nobody firestopped. QC is the inspection that catches it against the real thing.
It is also what turns a claim of quality into proof. A passed QC check with a timestamped photo tagged to the location is defensible; a verbal assurance is not.
How it shows up on site
Trade-specific inspection checklists run at rough-in and final, measurements taken and recorded, and any failed item written up as a nonconformance instead of quietly waved through.
Guides that use it
- How to run a construction inspectionRun a construction inspection end to end: know what you're inspecting against, walk the work in order, document what you see, and disposition every finding.
- How to choose construction inspection softwareEvaluate construction inspection software on what actually matters in the field: offline capture, photo proof tied to items, real reporting, and adoption by the crew.
- How to roll out inspections to your field crewGet a field crew to actually run inspections: start with one scope, make the tool dead simple, show the win early, and hold the standard until it's habit.
- How to keep a defensible inspection recordBuild inspection records that hold up in a dispute: location-tied, dated, backed by photos, and traceable from acceptance criteria to signoff.
Checklists that put quality control (qc) to work
Free, field-ready checklists, each with the photo every item needs before it can be submitted.
Related terms
- Quality assurance (QA)The planned system of procedures, plans and checkpoints set up before work starts so the right result is built the first time.
- Nonconformance report (NCR)A formal record raised when installed work does not meet the drawings, specs or an accepted standard, and the plan to resolve it.
- Acceptance criteriaThe stated, measurable conditions installed work has to meet before it can pass: the yardstick an inspection judges against.
- DefectA flaw in materials or workmanship that makes the work fall short of what was specified or of accepted trade practice.
- ToleranceThe allowable amount a dimension or condition can vary from the target and still be acceptable: the plus-or-minus on a spec.
- VerificationConfirming that installed work matches the drawings and spec: checking you built the thing right against a stated requirement.
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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