| Author |
Message |
Jerome J. Lazar, RA, CCS, CSI, NCARB
Senior Member
Username: lazarcitec
Post Number: 1777
Registered: 05-2003
| | Posted on Thursday, August 03, 2017 - 05:10 pm: |    |
for polished concrete floors (exterior)? |
David G. Axt, CCS, CSI ,SCIP
Senior Member
Username: david_axt
Post Number: 1586
Registered: 03-2002
| | Posted on Thursday, August 03, 2017 - 07:12 pm: | |
Wet or dry?
David G. Axt, CCS, CSI, SCIP
Specifications Consultant
Axt Consulting LLC |
ken hercenberg
Senior Member
Username: khercenberg
Post Number: 1089
Registered: 12-2006
| | Posted on Friday, August 04, 2017 - 10:34 am: | |
My understanding is that both ADA and OSHA have opted to not define a COF minimum, leaving that decision to the industry to define.
Typically I see 0.5 based on ASTM D2047 but as you can see from this article, there are other options. Keep in mind that results from different testing methods are not interchangeable.
https://www.concretedecor.net/decorativeconcretearticles/vol-14-no-2-feb-mar-2014/new-research-says-polished-concrete-is-the-most-slip-resistant-flooring/
I often see terrazzo sealers used on polished concrete to prevent staining though you might want to call a few and ask about using them in exterior applications. If you look in the MasterSpec epoxy terrazzo spec, you'll find language for sealers meeting ASTM D2047 at 0.50 COF.
Hope that helps. |
ken hercenberg
Senior Member
Username: khercenberg
Post Number: 1090
Registered: 12-2006
| | Posted on Friday, August 04, 2017 - 10:42 am: | |
A great resource regarding polished concrete is Jim Cuviello in Maryland.
His website is https://www.cuvielloconcrete.com/.
Jim is a wealth of information and gives freely of his knowledge. |
Louis Medcalf, FCSI, CCS
Senior Member
Username: louis_medcalf
Post Number: 89
Registered: 11-2010
| | Posted on Monday, August 07, 2017 - 09:31 am: | |
Another resource is the National Floor Safety Institute at https://www.nfsi.org. The director was a guest presenter in the Specifying Practice Group session in October 2016 that can be viewed here: https://www.youtube.com/watch?v=FCECrX0ereI . |
ken hercenberg
Senior Member
Username: khercenberg
Post Number: 1091
Registered: 12-2006
| | Posted on Monday, August 07, 2017 - 11:17 am: | |
Just received from Jim Cuviello (he's not permitted on our Discussion Forum):
OSHA and ADA have bowed out of dealing with slip coefficient. The information in the referenced article is the most current. The article references highly polished concrete.
If it was myself considering polished concrete where it may get wet on a regular basis I would hone it to a 200 or 400 grit and apply a sealer or coating as the wear surface.
Jim Cuviello
410-703-0376 Cell
410-643-4073 Office |
Michael Chambers FAIA FCSI CCS (Unregistered Guest)
Unregistered guest
| | Posted on Monday, August 14, 2017 - 06:23 pm: | |
There is a new ANSI Standard out for slip resistance using DCOF. ANSI A326.3 by the Tile Council of NA. Attached. |
ken hercenberg
Senior Member
Username: khercenberg
Post Number: 1093
Registered: 12-2006
| | Posted on Tuesday, August 15, 2017 - 08:59 am: | |
Thanks Michael. This is great.
I see that it references the same BOT3000 testing device that the concretedecor.net article identified.
Do we know how much this standard has changed from the previous ANSI A137-1-2012 standard the TCNA used to reference? |
ken hercenberg
Senior Member
Username: khercenberg
Post Number: 1094
Registered: 12-2006
| | Posted on Thursday, August 17, 2017 - 09:50 am: | |
Michael, do we have permission from ANSI to post this on our company intranet? Can we keep the copy on our servers?
Thanks again.
ken |
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ANSI A326.3