What is the maximum distance allowed from the last hanger to the end of a 1" branch line?

The maximum distance allowed from the last hanger to the end of a 1" branch line is specified as 36 inches. This is important for maintaining the structural integrity of the piping system. Properly spacing hangers prevents excessive sagging and potential damage or leakage from the piping due to unsupported spans.

In sprinkler systems, the guidelines regarding hanger spacing are designed to ensure that the piping is sufficiently supported throughout its length, particularly in areas where it may experience load or thermal expansion. Following these specifications helps to ensure the reliability and safety of the installation.

Proper support of branch lines also aids in effective maintenance and inspection, as it allows for easy access and visibility of the pipes. A 36-inch distance strikes a balance between support needs and practicality, making it the standard maximum allowable distance in such configurations.