Which requirement ensures proper space between toilets and adjacent fixtures?

The requirement of 15 inches from the centerline of the toilet to the side of adjacent fixtures is supported by plumbing codes to ensure adequate space for the user. This dimension allows for comfortable access and use of the toilet, promoting proper functionality and safety within the restroom environment.

Having at least 15 inches of space helps ensure that individuals can sit or rise comfortably without obstruction and provides enough room to avoid accidental contact with adjacent fixtures like sinks or cabinets. This careful consideration of spacing reflects the attention to user experience and safety in restroom design, which is essential for residential inspections.

In contrast, larger distances may be designated in other contexts or codes, but the 15-inch distance is specifically aligned with common residential applications. This standard has been widely adopted and is critical for maintaining accessibility, thereby ensuring the restroom meets necessary building and health codes.