Don Armstrong, PE, is a National Engineer for Oldcastle Architectural Products Group and provides technical support for the design and construction of segmental retaining walls and unit concrete pavement systems. He regularly presents to the engineering community the design philosophy, methodologies, and best practices that are the current standard of practice in the design of segmental retaining walls and interlocking pavement systems. In addition, he is part of the forensic team for both Anchor Wall Systems and Oldcastle in investigating issues related to the performance of retaining walls.
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