“Smooth” defined.

“Smooth” means: 1. In the case of food-contact surfaces, a food-contact surface which is free of pits and inclusions with a cleanability equal to or exceeding that of (100 grit) number 3 stainless steel. 2. In the case of nonfood-contact surfaces, a nonfood-contact surface of equipment having a surface equal to that of commercial grade hot-rolled steel free of visible scale. 3. In the case of floors, walls and ceilings, a floor, wall or ceiling having an even or level surface with no roughness or projections that render it difficult to clean.