What is the minimum distance required from the center of a water closet to the end of an adjacent tub or vanity?

The minimum distance required from the center of a water closet to the end of an adjacent tub or vanity is 15 inches. This measurement is established to ensure that there is adequate space for comfortable use of the water closet without interference from nearby fixtures. Maintaining this distance promotes accessibility and helps prevent discomfort or accidents when transitioning between fixtures in a bathroom layout. Moreover, this spacing is often dictated by plumbing codes to ensure safety and functionality in residential or commercial bathroom designs. A distance of 15 inches strikes a balance between efficient use of space and ensuring user comfort, which is essential in effective bathroom planning.