Cleanouts smaller than 3 inches must have at least how many inches of clearance for rodding?

For cleanouts smaller than 3 inches, maintaining adequate clearance is crucial for effective rodding and maintenance. The requirement is set at a minimum of 18 inches of clearance to ensure that there is sufficient space for tools to access the cleanout easily and perform necessary tasks. This clearance allows for maneuverability and helps to prevent damage to the surrounding plumbing or structures during maintenance activities.

In the context of plumbing code, these specifications are essential for safety and efficiency, as they facilitate proper access to drainage systems, which in turn supports the overall effectiveness of the plumbing infrastructure. Adequate clearance also reduces the risk of injury to the technician by providing a safer working environment when servicing a cleanout.