>> Maybe we should ban slick bathtubs, tile floors, and raised floors. You can usually look on the box and find the coefficient of friction (COF) for any floor

>> Maybe we should ban slick bathtubs, tile floors, and raised floors. You can usually look on the box and find the coefficient of friction (COF) for any floor tile you buy. OSHA has requirements for what COF is appropriate for various uses (dry and flat or wet and sloped, for example). It wouldn't surprise me if that sort of thing eventually makes it into the residential building code.