For any one in the construction business. I am asked to construct an ABC base for a concrete slab. any ideas?

Question

I am participating in a truck shop construction project in Mexico, and the floor of this project is a reinforced concrete slab of 16" thick, on ABC base, and the materials for this ABC base are not specified, only the thick. Does any body could give me any idea of what this materials could be?

Answer 1

Flex base is a compactable base material made up of crushed stone with all the fines included to be able to be compacted to a very hard base.