| Author |
Message |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1445
Registered: 05-2003
| | Posted on Thursday, August 27, 2015 - 03:51 pm: |    |
Request for spec from a new client, any interpretations from my peers, before I ask a stupid question. |
Colin Gilboy
Senior Member
Username: colin
Post Number: 410
Registered: 09-2005
| | Posted on Thursday, August 27, 2015 - 03:53 pm: | |
from NTMA
http://ntma.com/rustic-terrazzo/
Colin Gilboy
Publisher, 4specs.com
435.200.5775 - Utah
800.369.8008 |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1446
Registered: 05-2003
| | Posted on Thursday, August 27, 2015 - 04:01 pm: | |
Thanks Colin, but my confusion is because the architect wants to install rustic terrazo over a waterproofing coating, unless the rustic terrazzo is precast, I don't know how to do that? |
Colin Gilboy
Senior Member
Username: colin
Post Number: 411
Registered: 09-2005
| | Posted on Thursday, August 27, 2015 - 04:03 pm: | |
The NTMA drawing shows a vapor barrier - looks like a sheet, could be a liquid or sheet waterproofing.
Colin Gilboy
Publisher, 4specs.com
435.200.5775 - Utah
800.369.8008 |
Liz O'Sullivan
Senior Member
Username: liz_osullivan
Post Number: 196
Registered: 10-2011
| | Posted on Thursday, August 27, 2015 - 04:06 pm: | |
Sounds as if the architect wants to skip an essential step or two. |
J. Peter Jordan
Senior Member
Username: jpjordan
Post Number: 864
Registered: 05-2004
| | Posted on Thursday, August 27, 2015 - 04:06 pm: | |
Contact NTMA for clarification; ask for Richard Bruns and say I said for you to call him. |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1447
Registered: 05-2003
| | Posted on Thursday, August 27, 2015 - 04:11 pm: | |
I am not concerned at the moment with vapor, I am concerned with how the terrazzo bonds to a waterproofing product over a concrete slab, could be a polymer cement waterproofing I guess, I've never done this, or it could be a precast terrazzo, I've asked client for clarification. The other problem is this is to be located in SFL, the deck will require an NOA, because this is a roof deck. So much fun for a late Thursday afternoon with a potential hurricane coming.
Thanks for the nifty link Colin. |
Guest (Unregistered Guest)
Unregistered guest
| | Posted on Thursday, August 27, 2015 - 04:31 pm: | |
I don't suppose the architect would consider doing a split-slab with hot rubber for waterproofing ... would they? |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1448
Registered: 05-2003
| | Posted on Thursday, August 27, 2015 - 04:58 pm: | |
Slabs with overburdens are a standard effective solution for waterproofing in SFL, but once again I am asking for an interpretation of what is meant by "Rustic Terrazo on waterproofing coating on concrete", in reality I have not be contracted for this project and have only been exposed to preliminary information. |
Michael Chusid, RA FCSI CCS
Senior Member
Username: michael_chusid
Post Number: 69
Registered: 10-2003
| | Posted on Thursday, August 27, 2015 - 05:15 pm: | |
Another TLA (three letter acronym)...
What is "NOA"?
Michael Chusid, RA FCSI CCS
www.chusid.com www.buildingproduct.guru |
Wayne Yancey
Senior Member
Username: wayne_yancey
Post Number: 757
Registered: 01-2008
| | Posted on Thursday, August 27, 2015 - 05:35 pm: | |
Miami-Dade County Notice of Acceptance. |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1449
Registered: 05-2003
| | Posted on Thursday, August 27, 2015 - 05:43 pm: | |
Sorry Michael, for those who have never written specs for Dade or Broward Counties, an NOA or Notice of Acceptance is required for certain products/assemblies exposed to exterior elements, these assemblies must go thru "Product Approval". The NOA is government generated and is required for construction in Dade and Broward and other areas of Florida per the Florida Building Code. Here is a link to finding NOA's for products:
http://www.miamidade.gov/building/pc-search_app.asp
To use this link,
Go to File Classification and select High Velocity Zone; Go to Applicant to select Manufacturer, etc.
For other areas of Florida not having to comply with resistance to high velocity hurricane winds, a Florida Product Approval assembly is required:
http://www.floridabuilding.org/pr/pr_app_srch.aspx
Ron Geren can probably provide a better Code explanation than I. Let's just say that for WP over habitable space the FBC requires a current NOA. |
Greta Eckhardt
Senior Member
Username: gretaeckhardt
Post Number: 24
Registered: 08-2013
| | Posted on Friday, August 28, 2015 - 09:25 am: | |
Note that rustic terrazzo is a cementitious material as opposed to the resinous terrazzo material most commonly used for interior terrazzo flooring these days. It is therefore more vapor permeable, which will help avoid problems that occur when moisture is trapped between waterproof layer and impermeable flooring.
Depending on the type of waterproofing, a bonding agent, primer, surface-roughening or other preparation will most likely be needed before the terrazzo is installed. I suggest that you consult the waterproofing manufacturer and NTMA for advice. |
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