Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture·Page 7·25(3)
Definitions – Floor
Floor is defined as any base or structure between the ground surface (or hardcore laid on ground) and the upper surface of the floor.
"Floor" includes any base or structure between the surface of the ground, or the surface of any hardcore laid upon the ground, and the upper surface of the floor;
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet C - Site Preparation and Resistance to Contaminants and Moisture.pdf