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Peer review and constructability · Lesson 4 of 4

Peer review and constructability: defects, verification and case study

The defect families a review finds, why attachments to tested edge metal matter, the verification steps of mock-up, preparatory, initial and follow-up phases, and a constructed case where a lightning conductor is clamped through a coping cap.

You will be able to: Diagnose a plausible edge-metal defect, name the defect families a review looks for, work through the verification steps from mock-up to follow-up inspection, and document the finding with evidence and corrective options.

10 min · 12 slides · 6 questions

All lessons in this module
Slide 1 of 12

Six defect families

Six defect families recur: gaps at interfaces, no allowance for movement, edge metal that was never tested, attachments that defeat edge metal, incompatible metals, and piece lengths or laps that do not match the shop's limits.

This is a working list for this module, built from the sources in lessons 1 to 3.

Sources

Glossary

Mock-up
A sample assembly built and tested before production. NIBS Guideline 3 says mock-up construction and testing must be scheduled with float time for fixing unforeseen issues and retesting.
Initial phase
In UFGS 01 45 00, observing the first segment of a definable feature of work to set the workmanship level; it is repeated for each new crew when the specified quality is not being met.
Follow-up inspection
In UFGS 01 45 00, an inspection after the initial phase that compares ongoing work with the location and workmanship recorded at the initial phase.
Edge system
Metal at the edge of a low-slope membrane roof, such as coping or fascia. SPRI says edge metal needs to remain attached in high winds even if it does not secure the roof.