What is the installation interval for supports for ASD plastic piping?

The correct answer identifies the standard installation interval for supports for Acrylonitrile Butadiene Styrene (ABS) plastic piping. In construction and plumbing, it is essential to support plastic piping adequately to prevent sagging, stress, and potential damage over time. The intervals specified in the correct choice reflect industry standards for maintaining the integrity and functionality of the piping.

Understanding the right support intervals helps ensure that the piping remains secure and correctly aligned, reducing the risk of leaks or structural failures. The intervals of 10 feet vertical and 4 feet horizontal provide a balance between adequate support and practical installation, allowing for effective installation while still allowing for flexibility in piping layout.

The other choices do not conform to the established standards for support intervals. For instance, intervals that are too far apart might fail to provide the necessary support, leading to potential mishaps, while those that are too close could complicate installation and increase material costs unnecessarily. Thus, recognizing the appropriate installation intervals, like the one noted in the correct answer, is crucial for successful and safe plumbing system installations.