What is the minimum spacing requirement for hangers on horizontal 1" copper pipes?

The minimum spacing requirement for hangers on horizontal 1" copper pipes is indeed 6 feet. This requirement is dictated by plumbing codes, including those in Massachusetts, to ensure that pipes are properly supported. Proper spacing of hangers is crucial to prevent sagging and ensure the integrity and longevity of the piping system. If hangers are placed too far apart, the weight of the pipe and any fluids it carries can cause undue stress and potential damage. Therefore, establishing a 6-foot spacing ensures that the pipes remain securely in place and function optimally without the risk of bending or breaking over time. This also facilitates easier maintenance and reduces the risks associated with inadequate support in plumbing systems.