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Richard Hird (Unregistered Guest)
Unregistered guest
Posted on Wednesday, May 09, 2012 - 06:36 pm:   Edit PostDelete PostPrint Post

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:   Edit PostDelete PostPrint Post

07 87 00 Smoke Containment Barriers
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:   Edit PostDelete PostPrint Post

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:   Edit PostDelete PostPrint Post

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:   Edit PostDelete PostPrint Post

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.

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