Changes in CISCA Ceiling Systems Hand...

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Author Message Michael Chusid, RA FCSI CCS Senior Member Username: michael_chusid Post Number: 506 Registered: 10-2003 Posted on Tuesday, November 05, 2019 - 12:14 am:    If you mention the Handbook in your documents, note that the new Handbook, the tolerance for ceilings has increased from 1/4" in 12 ft. to 1/4" in 10 ft. This puts it into agreement with ASTM C636. Michael Chusid, RA FCSI CCS 1-818-219-4937 www.chusid.com www.buildingproduct.guru