Why Concrete Fails (And How to Fix It) | RFIs, Specs & Sustainability in Construction
July 20, 202501:01:37

Why Concrete Fails (And How to Fix It) | RFIs, Specs & Sustainability in Construction

In Episode 33 of What the RFI, host Matt Brennan is joined by concrete expert Christopher Bennett (Tau Group Solutions) and structural engineer Ryan Stoltz (Structures) to explore the real-world challenges of working with concrete in design and construction. If you’ve ever dealt with confusing concrete specs, frustrating RFIs, or costly rework during construction administration, this episode is for you.

This deep dive into concrete construction covers everything from refined finishes, mass concrete mix design, and low-carbon concrete strategies, to early design coordination and field quality control. It’s a must-listen for architects, structural engineers, contractors, owner reps, and construction administrators navigating CA on complex builds.

📌 In This Episode:
- Why concrete is the most misunderstood building material
- Common causes of RFIs related to concrete finishes, curing, and mix specs
- How one unified concrete mix design streamlined a K–12 project and saved 100,000+ gallons of water
- What the new Refined Concrete Finishing Specification means for architects and owners
- How to write measurable concrete specs that reduce change orders and disputes
- Why training field crews on sustainable materials is critical to project success
- How to talk about embodied carbon and LEED v4.1 in real-world jobs
- When polished concrete becomes a legal and budget nightmare
- What a “linguistic” approach to concrete specs teaches us about cross-discipline communication

🧱 Ideal For:
- Architects writing Division 03 or managing exposed concrete finishes
- Structural engineers seeking better collaboration with design teams
- Construction admin professionals dealing with submittals, RFIs, and concrete field reports
- Contractors & GCs aiming to reduce rework and improve sustainability outcomes
- Spec writers looking to update outdated polished concrete language
- Owners & Reps who want better performance and lower lifecycle costs from concrete

📚 Chapters for Navigation:
00:00 – Intro: From Rebar to Redlines
02:40 – Meet the Guests: Chris & Ryan’s Concrete Origins
08:15 – What’s Changed in Concrete?
13:45 – The Kendrick Elementary Experiment
19:20 – Training & The Human Factor
24:30 – “It’s Not Your Grandpa’s Concrete”
29:10 – From Polished to Refined: Defining the Finish
35:40 – Field Testing & Numerical Specs
41:00 – Sustainability That Works (and Saves Money)
47:10 – RFI Horror Stories: Concrete Gone Wrong
53:30 – What Needs to Change in the Industry?
59:00 – Closing Thoughts & Where to Find the Guests

🔊 Featured Quotes:
• “Clarity is the new foundation.”
• “Concrete doesn’t have to crack.”
• “Concrete is in every job — but that doesn’t mean it’s being done right.”

🔗 Resources Mentioned:
• National Concrete Refinement Institute: thencri.com
• Tau Group Solutions: taugroup.solutions
• Structures Engineering: structurestx.com

📣 Subscribe for more episodes covering construction admin, specs, sustainability, and how to make CA suck less.
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