Code-required inspection carried out on site by inspectors holding the specific certification for that scope. Findings are recorded in the field and the report is filed the day the work is inspected, so the record keeps pace with the build rather than trailing it.
Verification of reinforcing steel size, grade, spacing, cover and splice lengths against the approved drawings, followed by observation of placement and consolidation during the pour. The steel inspection happens after tying and before the pour is released; placement inspection runs continuously while concrete is being placed.
Verification of unit placement, mortar joints, reinforcement position, grout lift heights and cleanouts as the wall goes up. Depending on the design strength and the risk category, inspection is either periodic or continuous through laying and grouting.
Verification of tendon profile, support bar spacing, anchorage hardware and end-block reinforcement before the pour, then witness of the stressing operation. Measured elongations are checked against the calculated values on the stressing record before tails are cut.
Verification of member identification, connection fit-up, faying surface condition and bolt grade, along with installation method and pretension verification for slip-critical and pretensioned joints. Carried out during erection, ahead of deck or fireproofing.
Review of welder qualifications and the applicable procedure specification, then inspection of joint preparation, preheat, interpass temperature and completed welds. Visual inspection is continuous for complete-joint-penetration welds; volumetric methods are applied where the drawings or code require them.
Observation of subgrade preparation and fill placement, with in-place density and moisture measured lift by lift against a laboratory maximum dry density. Performed during grading, trench backfill and pavement subgrade work, before the next lift is placed.
Verification that sprayed fire-resistive material matches the listed assembly for thickness, density and bond. Inspection happens after application and before the material is concealed by ceilings, walls or cladding.
Verification that penetration firestops and joint systems match the tested and listed system for the rated assembly they occur in, including annular space, fill depth and backing. Inspected during installation, before the penetration is covered.
Verification of hole diameter and depth, hole cleaning, adhesive handling and embedment for post-installed anchors and dowels, plus proof-load testing where specified. Adhesive anchors in sustained tension require continuous inspection during installation.
Verification of shear wall sheathing, nail size, edge distance and spacing, hold-down installation and anchor bolt placement against the approved drawings. Inspected after framing and before insulation or drywall closes the assembly.
Observation of nozzle technique, placement sequence and encasement of reinforcement, with test panels shot for later coring. Inspection is continuous during placement, since defects are concealed by subsequent material.
Recording of installation data for deep foundations: driving resistance and tip elevation for driven piles, or shaft dimensions, bearing material and cleanliness for drilled elements, plus reinforcement and concrete placement. Inspection is continuous through installation and the record forms part of the foundation documentation.
Verification of panel and member grade stamps, connection hardware, fastener type and installation, and erection tolerances for cross-laminated and glue-laminated assemblies. Moisture content and weather protection are checked during erection, before enclosure.
In-plant inspection of prefabricated units against the approved plans, followed by inspection of the on-site work — foundations, module connections, and the utility and structural tie-ins that the factory could not complete. Plant inspection has to be scheduled against the fabrication programme, not the site programme.
Observation of mix delivery temperature, lift thickness, joint construction and rolling pattern, with in-place density measured behind the breakdown roller. Inspection runs during paving, since compaction cannot be corrected once the mat has cooled.
Ultrasonic, magnetic particle, dye penetrant and radiographic examination of welds and materials where volumetric or surface verification is required without disassembly. Applied to complete-joint-penetration welds and to locations called out on the drawings or by the engineer of record.
Verification of stud gauge and spacing, track attachment, screw type and pattern, and bracing for load-bearing and shear wall assemblies in cold-formed steel. Inspected before the assembly is closed in.
Proof-load and torque verification of post-installed anchors, dowels and fasteners to the load specified by the engineer of record. Usually performed on a sampling basis after installation, with the tested anchors identified on the report.
Verification of surface preparation, ambient and substrate conditions at application, wet and dry film thickness, and adhesion of protective coatings on structural steel. Conditions are recorded at the time of application because they cannot be reconstructed afterwards.
The current drawing set, including structural and the relevant specification sections.
The statement of special inspections, or the schedule the building department has approved.
The site address and the jurisdiction reviewing the work, since requirements vary between them.
Approximate start date and duration, so inspectors can be committed against your programme.