What is the maximum allowable height for the walls in a shower above the shower drain?

The maximum allowable height for the walls in a shower above the shower drain is typically set to ensure proper drainage and avoid water pooling. In many plumbing codes, a height of 70 inches is specified as the standard maximum for shower walls. This height provides adequate coverage to prevent splashing outside the shower area while still being effective for user convenience.

Exceeding this height can introduce complications, such as less effective drainage or difficulties in reaching water controls, which could be a concern in situations where the user needs to adjust water temperature or pressure while showering. Therefore, adhering to the 70-inch maximum ensures compliance with safety and functionality standards in shower design.