What is the maximum spacing of hangers on 1 1/2" or larger thin-wall pipe?

The maximum spacing of hangers for 1 1/2" or larger thin-wall pipe is specified as 15 feet. This guideline ensures that the pipe is adequately supported to prevent sagging, deformation, or damage, especially when it is filled with water or other fluids that may exert additional weight and stress on the piping system.

Proper spacing of hangers is essential for maintaining the structural integrity of the piping. If hangers are too far apart, it can lead to excessive movement or flexing of the pipe, which may result in joint separation or leaks. By adhering to the 15-foot spacing requirement, you are following industry standards that enhance safety and reliability in sprinkler systems.

This specific standard aligns with the National Fire Protection Association (NFPA) codes and local building codes, which are designed to ensure the effectiveness of sprinkler systems during fire suppression and other operational scenarios. Understanding and applying these standards in practical settings is crucial for any sprinkler fitter.