What type of slippery surface must be avoided in areas where plumbing fixtures are located?

In areas where plumbing fixtures are located, avoiding slippery surfaces is essential for safety. Slippery surfaces can pose a significant risk of accidents such as slips and falls, especially in environments where water may accumulate, such as bathrooms or kitchens. The presence of water from plumbing fixtures can exacerbate the danger posed by these surfaces, as they can become even more slick and increase the likelihood of injury.

Rough surfaces, while they may not be ideal for all applications, typically provide better traction than smooth, slippery surfaces. Nonabsorbent surfaces are often beneficial for sanitation and can help prevent the growth of mold and mildew, but they can also be slippery if they are smooth. Soft surfaces, on the other hand, are generally not used in areas with plumbing fixtures due to hygiene concerns and the potential for water retention and damage.

Thus, the focus on avoiding slippery surfaces is crucial in ensuring the safety and usability of spaces around plumbing fixtures.