Purlin and Girt Punching Dimensional Check

This template covers the inspection points that affect fit-up on cold-formed Z and C purlins and girts: hole count, hole location, spacing, edge distance, diameter, lap length, overall length, and end-cut consistency. It also includes setup checks such as part orientation, handedness, and revision control so the inspector is comparing the right part to the right print. It is designed for pre-shipment verification before parts leave fabrication. If your process includes secondary operations such as slotted holes or field-drilled modifications, those can be added as custom checks.

Use it after punching and cutting, and before parts are bundled, labeled, or shipped. It is especially useful when a job has mirrored left-hand and right-hand members, multiple part numbers, or tight connection tolerances. The best time to run it is while the part is still at the fabrication station and the print is open on the traveler. That makes it easier to correct a non-conformance before the whole lot is affected.

A trained quality inspector, lead fabricator, or other assigned verifier can complete it, as long as they can read the fabrication drawing and measure against the specified tolerances. The person doing the check should understand profile orientation, punch direction, and how lap holes must align with the mating member. If your shop uses a separate sign-off for critical dimensions, this template can support that workflow. The key is consistent assignment and clear accountability.

For high-volume runs, inspect the first piece, then sample at the cadence defined by your quality plan, and always recheck after setup changes, tool changes, or revision changes. For custom or short-run jobs, a full check on each part or each bundle is often appropriate because the risk of wrong-handed parts or print drift is higher. If a defect is found, increase inspection frequency until the process is confirmed stable. The template can be used for first article, in-process, and final inspection.

Common misses include punched holes that are shifted from the print, wrong hole count, incorrect lap length, and parts cut to the wrong overall length. Shops also catch wrong-handed Z or C members, burrs or tearing that interfere with fit-up, and ovalized or cracked holes from tooling issues. Another frequent issue is using an outdated revision or the wrong part number at the station. This template makes those failure modes visible before shipment.

Yes. It aligns well with ISO 9001-style control of documented information, in-process verification, and non-conformance handling. It also supports general fabrication quality expectations by requiring the approved print, revision control, and disposition of rejected parts. While it is not a regulatory form by itself, it helps prove that the shop checked the product against the specified drawing before release. You can also adapt it to customer-specific hold points or inspection records.

Yes. You can add fields for punch size, slot orientation, coating damage, end prep, or special connection patterns if your product line requires them. Many shops also add separate checks for left-hand versus right-hand members, bundle labeling, or specific erection marks. If you fabricate both Z and C shapes, keep the profile identification field prominent so the inspector does not compare the wrong geometry to the print. Customization works best when the core dimensions stay unchanged and only job-specific fields are added.

An ad-hoc check usually depends on memory and verbal handoff, which makes it easier to miss revision changes, handedness, or a small hole-location error. This template gives the inspector a repeatable sequence: identify the job, verify setup, check the hole pattern, confirm lap and length, then record any non-conformance. That structure reduces ambiguity and makes the record easier to review later. It also helps supervisors spot recurring process issues instead of isolated mistakes.