Decomposed Granite + ADA = Not Permitted in COA

June 1, 2011 by Brad Lingvai

If you are not already aware, the City of Austin no longer allows decomposed granite to be utilized on an ADA route.  Despite what your licensed RAS might say, COA issued an interpretation memo on March 31, 2011 (shown below) stating that “granite gravel” is classified as soft, loose material pursuant to TAS Chapter 4.5.1 and therefore, not permitted.


We encountered this issue on a recent project and just thought we would share with the community in effort to prevent similar issues on your projects.  Feel free to contact us with questions regarding this post, we’d be happy to talk with you.

Written by Brad Lingvai

Brad Lingvai

Mr. Lingvai received his BSCE from the University of Virginia (Charlottesville, VA) in 2000 and is registered as a Professional Engineer in the State of Texas. Since co-founding BIG RED DOG in 2009, Mr. Lingvai has been the Principal in Charge of hundreds of projects in the City of Austin, City of Round Rock, and surrounding communities. As President of our Austin office, Mr. Lingvai is responsible for managing our Austin team of over 30 engineers and designers, overseeing the operations of the office, and for managing our Raving Fans and prospective clients. Austin-area projects of note that have benefited from his expertise since his arrival in Austin in 2000 include Waller Creek, the Robert Mueller Municipal Airport (“Mueller”) redevelopment project, and The Domain shopping center. Brad is currently the Principal in Charge of the Waller Creek redevelopment effort in downtown Austin. He and his wife Rachel live in the Allandale neighborhood of Austin.