In this clip from Episode #126 of the Concrete Logic Podcast, Seth Tandett points out how the industry’s shift to Type IL cement is still rooted in a foundational 2011 report. Even the 2024 update leans heavily on the original. If you’re relying on the latest specs without ever reading the source material, you might be missing the assumptions and limitations baked into that early research. Sometimes the most important answers are hiding in the oldest documents.