Guides for people who actually order concrete and aggregate

Straightforward answers to the questions we get asked on site, written by the people who batch and quarry the material.

Which RMC grade should you choose?

A plain guide to M10 through M50, what each grade is actually rated for, and how to avoid over-ordering or under-specifying.

Aggregate is 70 to 80 percent of concrete by volume, yet it gets the least attention on site. Here is why that is a mistake.