What Is a Concrete Contractor?




What Is the 20/30/40 Rule in Concrete?

Short answer: The “20/30/40 rule” is an informal rule-of-thumb people use in different ways—most commonly to describe a three-size coarse aggregate blend (roughly 20% small, 30% medium, 40% large stone), sometimes a simplistic sand–stone–cement split, and occasionally a budgeting shorthand. It...

January 1, 2026