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 is the Commercial Services Market Leader in the BIG RED DOG Austin office. He is also a co-founder of the firm and has been a leader on hundreds of central Texas projects since the founding of BIG RED DOG in 2009. Austin-area projects of note that have benefited from his expertise include Belterra, Waller Creek, the Robert Mueller Municipal Airport (“Mueller”) redevelopment project, and The Domain shopping center. He has extensive experience with design and coordination of water, wastewater, and drainage studies and systems, water quality and detention ponds, and conceptual layouts of gas, electric, and telecommunication lines. Mr. Lingvai received his Bachelor of Science in Civil Engineering from the The University of Virginia (Charlottesville, VA) and is registered as a Professional Engineer in the State of Texas.