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How should a cleanout be positioned in relation to the drainage line?

  1. Diagonal

  2. Opposite direction

  3. At right angles

  4. Parallel

The correct answer is: At right angles

The correct positioning of a cleanout is at right angles to the drainage line. This configuration facilitates easier access for maintenance and cleaning, ensuring that blockages can be effectively cleared. By placing the cleanout perpendicular to the flow of the drainage line, it allows for a direct line of sight and access into the pipe, making it simpler to insert cleaning tools or cameras for inspection. Positioning a cleanout at right angles also helps maintain the integrity of the drainage system. It minimizes potential flow disruptions and reduces the likelihood of debris collecting in a way that could obstruct the flow. Additionally, this orientation complies with plumbing codes, which often require cleanouts to be installed in such a manner to ensure they can function effectively without causing additional issues in the drainage system. Other positioning options, such as diagonal, opposite direction, or parallel, might complicate access or negatively impact the efficiency of the drainage system, which is why they are not recommended within the code.