What is the required clearance for rodding cleanouts on 2-inch pipes or less?

The required clearance for rodding cleanouts on pipes that are 2 inches or less in diameter is specified as 12 inches. This clearance is necessary to allow for access to the cleanout for maintenance and cleaning purposes. Rodding, which involves using a flexible rod to clear blockages, necessitates sufficient space around the cleanout to maneuver tools and equipment effectively.

Having a clearance of 12 inches ensures that plumbing professionals can easily work around the cleanout without obstruction, leading to more efficient service and maintenance. Adequate clearance also contributes to safety, as it prevents any risk of damage to surrounding structural elements during maintenance tasks.

The other options suggest clearances that are either too small or excessively large for practical applications in typical plumbing scenarios, thus reinforcing the appropriateness of 12 inches as the standard requirement for cleanouts in this particular size range.