Concrete Clarity: Why Specs, Sustainability & RFIs Still Trip Us Up
In the latest episode of "What the RFI," host Matt Brennan discusses the complexities of concrete construction with experts Christopher Benn...

Ryan Stoltz is a Principal at Structures, a leading structural engineering firm based in Austin, Texas. With over 15 years of experience in design, construction, and project leadership, Ryan is known for bridging the gap between technical rigor and real-world constructability. He has led structural design efforts on a wide range of project types, including K–12 schools, civic facilities, higher education campuses, and commercial developments.
A licensed Professional Engineer and LEED Accredited Professional, Ryan brings a sustainability-minded lens to every phase of design. He’s a strong advocate for early coordination between architects, engineers, and contractors, especially on complex projects involving exposed concrete, mass timber, and innovative material strategies.
Ryan has become a thought leader in the application of performance-based concrete specifications, working to reduce construction RFIs and clarify intent through measurable benchmarks and practical field knowledge. His collaborative approach and field-forward mindset have helped deliver high-performing, resilient structures across Texas and beyond.
When he’s not working on specs or steel, you’ll find Ryan mentoring young engineers, speaking at industry panels, or out on the job site—turning drawings into built reality.
In this episode, Matt Brennan hosts Chris and Ryan to discuss the complexities of concrete construction, focusing on RFIs, specifications, and sustainability. They share insights from their experiences, emphasizing the importance of clear communication, innovative mix designs, and the need for training in the industry. The conversation also touches on the challenges of concrete production and the future of sustainable practices in construction. Takeaways Clarity in specifications can reduce R...
In the latest episode of "What the RFI," host Matt Brennan discusses the complexities of concrete construction with experts Christopher Benn...
