Roles & authorities
Testing and inspection agency
Also called: testing agency, inspection agency
A testing and inspection agency is an independent firm brought onto a project to test materials and inspect defined scopes of work — concrete, soils, steel, welds, bolting and the like. On many jobs the agency is who actually performs the special inspection the code requires, providing qualified inspectors and a testing lab under one roof. What they inspect, how often, and to what standard is set by the project's inspection program and the engineer of record, and their approvals are enforced by the AHJ.
How it shows up on site
The agency's inspector is scheduled to the operation — present while concrete is placed or welds are laid — and their lab tests the samples taken from that work, like concrete cylinders broken at set ages. Continuous scopes need the inspector there for the whole operation; periodic scopes are checked at intervals.
Their work runs in parallel with the building department's inspections and answers to the inspection program, not the installer. Independence is the point: an agency that doesn't work for the crew has no reason to pass marginal work.
What proves it
Signed reports on the agency's letterhead, tied to the specific pours, welds or connections and the standard applied, plus lab results for the samples. Photos captured at the time of inspection and filed with each report keep the finding verifiable after the work is covered.
Standards it's verified against
Checklists that put testing and inspection agency to work
Free, field-ready checklists, each with the photo every item needs before it can be submitted.
Related terms
- Special inspectorA qualified inspector who verifies specific high-risk work — welds, bolting, concrete, anchors — beyond the routine building inspection.
- Materials testing laboratoryA laboratory that tests construction materials — concrete, soils, steel, asphalt — to confirm they meet the specified properties.
- Third-party inspectionInspection performed by an independent agency retained for the project rather than by the installer or the building department.
- Engineer of record (EOR)The licensed engineer who stamps a design discipline and stays responsible for its intent through construction.
- Authority having jurisdiction (AHJ)The office or official empowered to enforce a code and approve materials, methods and completed work on a given project.
- Owner's representativeThe person who acts for the owner on site, protecting the owner's interests in scope, quality, schedule and cost.
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.