TablesN Quality control and quality assurance
Table N5.6-1: Inspection Tasks Prior to Bolting
PDF page 259 · AISC 360-22
| Inspection Tasks Prior to Bolting | QC | QA |
|---|---|---|
| Manufacturer’s certifications available for fastener materials | O | P |
| Fasteners marked in accordance with ASTM requirements | O | O |
| Correct fasteners selected for the joint detail (grade, type, bolt length if threads are to be excluded from shear plane) | O | O |
| Correct bolting procedure selected for joint detail | O | O |
| Connecting elements, including the appropriate faying surface condition and hole preparation, if specified, meet applicable requirements | O | O |
| Pre-installation verification testing by installation personnel observed and documented for fastener assemblies and methods used | P | O |
| Protected storage provided for bolts, nuts, washers, and other fastener components | O | O |
- (a) For snug-tight joints, pre-installation verification testing as specified in Table N5.6-1 and monitoring of the installation procedures as specified in Table N5.6-2 are not applicable. The QCI and QAI need not be present during the installation of fasteners in snug-tight joints.
- (b) For pretensioned joints and slip-critical joints, when the installer is using the turn-of-nut or combined method with matchmarking techniques, the direct-tension-indicator method, or the twist-off-type tension control bolt method, monitoring of bolt pretensioning procedures shall be as specified in Table N5.6-2. The QCI and QAI need not be present during the installation of fasteners when these methods are used by the installer.
- (c) For pretensioned joints and slip-critical joints, when the installer is using the turn-of-nut or combined method without matchmarking, or the calibrated wrench method, monitoring of bolt pretensioning procedures shall be as specified in Table N5.6-2. The QCI and QAI shall be engaged in their assigned inspec- tion duties during installation of fasteners when these methods are used by the installer.
As a minimum, bolting inspection tasks shall be in accordance with Tables N5.6-1, N5.6-2, and N5.6-3. In these tables, the inspection tasks are as follows:
- (a) Observe (O): The inspector shall observe these items on a random basis. Operations need not be delayed pending these inspections.
- (b) Perform (P): These tasks shall be performed for each bolted connection.