What is the minimum required distance from the center of a water closet to the center of a urinal?

The minimum required distance from the center of a water closet to the center of a urinal is 31 inches. This measurement is established to ensure adequate space for comfort, accessibility, and ease of use. This standard is particularly important in public restrooms where multiple fixtures are installed, as it prevents overcrowding and allows individuals sufficient room to use the facilities without feeling cramped or restricted.

While some other options may seem plausible, they do not adhere to the established guidelines in plumbing codes, which emphasize the necessity of providing a minimum space to promote sanitation and user comfort. Standard codes often reference this dimension to ensure consistency and code compliance across different restroom designs, thereby improving the overall functionality of the facility.