According to standards, what is the minimum depth for recessed treads in residential spas?

The minimum depth for recessed treads in residential spas is established to ensure safety and functionality. A depth of 5 inches provides an adequate step for users, making it easier to enter and exit the spa without slipping. This standard reflects considerations for stability and comfort, allowing sufficient space for foot placement and preventing potential accidents.

A depth of less than 5 inches may not provide enough support or grip, increasing the risk of falls. Safety regulations prioritize user accessibility while maintaining structural integrity within the spa environment, which is why the 5-inch measurement is key in promoting safe usage.