Draftstopping

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Author Message Richard Hird (Unregistered Guest) Unregistered guest Posted on Wednesday, May 09, 2012 - 06:36 pm:    Draftstopping. By code I need to provide draftstopping above the ceiling on a multi story apartment complex. The extent of the draftstopping is shown on the architectural drawings, but the method is a performance is not . Since it is just wood or gyp sheathing, it could easily go in the rough carpentry, but the structural engineer may or may not provide specs, and I doubt it would cover smoke/fire blocking if he did. He does not work for me. Since it could ne an insulation product I would like to cover it in the specs like firestopping (do it and here are the ways how), but there is nothing in masterformat for draftstopping, or fireblocking for that matter. Any ideas on where it should go Div 6 Div 7 etc. Ronald L. Geren, AIA, CSI, CCS, CCCA, SCIP Senior Member Username: specman Post Number: 1011 Registered: 03-2003 Posted on Thursday, May 10, 2012 - 12:42 am:    07 87 00 Smoke Containment Barriers Ron Geren, AIA, CSI, CCS, CCCA, SCIP www.specsandcodes.com John Bunzick, CCS, CCCA, LEED AP Senior Member Username: bunzick Post Number: 1392 Registered: 03-2002 Posted on Tuesday, May 15, 2012 - 11:35 am:    If it is detailed on the drawings, and the structural specifications (and gypsum board) include the particular materials to construct the it, it seems to me you don't need to add a separate draftstopping specification section. Mark Gilligan SE, Senior Member Username: mark_gilligan Post Number: 476 Registered: 10-2007 Posted on Tuesday, May 15, 2012 - 12:16 pm:    John is right that if the work is shown on the documents and using common materials you do not need to have a seperate specification section. The problem is that gypsum board is not normally included in the rough carpentry or other structural specifications. You will thus need to make sure that there is a specification section defining gypsum board. If you decide to construct the draft stopping out of wood suggest that you coordinate the structural and architectural drawings. It would not surprise me to see the graphics of the wall framing shown on the architectural drawings differing from what is shown on the structural drawings. Ronald L. Geren, AIA, CSI, CCS, CCCA, SCIP Senior Member Username: specman Post Number: 1013 Registered: 03-2003 Posted on Tuesday, May 15, 2012 - 01:01 pm:    John and Mark, I agree with you both, but the original post seemed to indicate that the product was not defined and that it was a performance-based requirement. Thus, the Division 07 section I mentioned would provide a place for specifying those requirements without having to define the material used to achieve those requirements. Ron Geren, AIA, CSI, CCS, CCCA, SCIP www.specsandcodes.com