ICC-ES Evaluation

Keystone Retaining Wall Systems LLC has received confirmation from ICC Evaluation Service, LLC (ICC-ES), that its Keystone Retaining Wall System complies with the provisions of the 2009/2012/2015 International Building and Residential Codes and the 2016 California Building Code. The ICC-ES confirmation, published in evaluation report ESR-2113, will help code officials approve use of Keystone products under the codes. The Keystone evaluation report is available online at