506.2

Section 506.2 is titled 'Site preparation' and covers requirements for concrete floors on ground. The requirement to remove certain materials before placing fill, base, and a concrete floor is established. The purpose of this section is to prevent premature degradation of concrete floors.

The model shows an area within a foundation wall being prepped for a concrete floor by removal of vegetation, construction debris, and loose top soil, and then a base and concrete being placed.