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Issue link: http://coatingspromag.epubxp.com/i/796818
26 MARCH 2017 COATINGSPROMAG.COM in-place work will be employed with clear references to industry standard test procedures and accep- tance criteria. 4. W ho is responsible for the air barrier submittals and shop drawings? Should the submittals and shop drawings be composed solely of manufacturer standard details? The GC and subcontractors are respon- sible for providing project-specific shop drawings that include input from the manufacturer. A ll details relevant to the project should be provided, including, but not limited to, intersections with other envelope assemblies, details showing how gaps in the construction will be bridged, inside and outside corner transitions, how claddings are secured while maintaining the air-tightness, and how miscellaneous penetrations, such as conduits, pipes, electric boxes, and similar items, are sealed. The shop drawings need to be reviewed and coordinated with related trades and ref lect the sequencing of construction. e manufacturer's standard details can be used as shop drawings when they mimic the jobsite conditions. However, when the manufacturer's standard details do not mimic the jobsite conditions, they are to be modified by the contractor with input by the manufacturer to replicate project-specific conditions. 5. Do preconstruction meetings for the air barrier have value? W hen should an air barrier preconstruction meeting be scheduled? W hat should the agenda be for the preconstruction meeting? Yes, preconstruction meetings have value. T hey set the expectations for each participant and are an opportu- nity for all parties involved to raise questions and concerns. Having discussions up front, before the project is under way, is invaluable in heading off sequencing and compat- ibility issues that might other w ise become an issue w ith compliancy later. e meeting should take place between two and four weeks prior to installation start-up. T he preconstruction meeting's agenda should be outlined in the specification and include a discus- sion of the substrate acceptability, material installation limitations, communication of special project site considerations, discussion of installation sequencing and logistics, interface detailing review, discussion of constructability issues, response to questions provided by the subcon- tractors, and how non-compliant conditions can cause an interruption of the work (and so should include a procedure for restarting the work after corrections have been made). 6. W hy should site constructed mockups be required in project specifications? It is necessary to establish that the assembly is a repeatable representation of the site-specific work that meets the specified performance requirements, demonstrates material installation, and addresses work sequencing and workmanship. 7. W ho is responsible for the coordination necessary for the successful installation of the air barrier? How is coordination implemented? e CM/GC is responsible for the air barrier installation coordination. Implement the coordination effort by stating in the Division 1 specifications that the CM/GC is required to provide a specific coordinator responsible for sequencing the air barrier/building enclosure interfaces that involve multi- ple subcontractors and manufacturers. 8. W ho should be responsible for verifying the continuity of the air barrier installation and for field performance testing? e specifications should state that the CM/GC shall be responsible for the quality control (QC)/quality assurance (QA) of the air barrier installation and for creating and implementing a strict documentation program that includes a reporting system to inspect and track non-conforming installations. Repairs to the air barrier should be conducted in accordance with manufacturer's requirements and should become part of the documentation. Specifying Success