On vertical plumbing connections, how often are hangers required?

In Massachusetts plumbing code, hangers on vertical plumbing connections are required every story height. This requirement is designed to ensure the stability and support of vertical piping systems, preventing sagging or shifting that could lead to leaks or damage. By supporting pipes at each story height, the plumbing system is maintained in a vertical position, aiding in both functional performance and compliance with safety standards.

The need for hangers at this interval considers the weight and movement of the pipes during use, as well as thermal expansion and contraction. This guideline helps to effectively distribute the weight and pressure throughout the plumbing system, ensuring its durability over time.

Other intervals such as every floor, every 10 feet, or every 15 feet are not suitable, as they do not adequately address the specific conditions and vertical alignment challenges faced by plumbing systems installed over multiple stories. Thus, every story height is the most logical and code-compliant choice for proper support in vertical plumbing installations.