A rope and float line shall be provided for all of the following situations:
- Separation of activity areas.
- Identification of a break in floor slope at water depths of less than 5 feet (1524 mm).
- Identification of a water depth greater than 4.5 feet (1372 mm) in constant floor slope in Class D-2 pools.
Exception: Class D-1 pools or any other pool where the designer indicates that such a line is not required or that the line would constitute a hazard.