In a steel pipe sprinkler system, how many branch lines can omit an intermediate hanger if a branch line hanger is installed on the starter piece?

In a steel pipe sprinkler system, specific guidelines dictate the installation of hangers to ensure the integrity and support of the piping system. According to industry standards, if a branch line hanger is installed on the starter piece (the section of pipe that connects directly to the main line), it allows for the omission of an intermediate hanger for a maximum of three additional branch lines.

This practice is based on the need to maintain proper support and alignment of the piping while also preventing undue stress on the connections. Each branch line creates a moment that may affect the alignment of the starter piece, and the provision for omitting an intermediate hanger is designed to provide a balance between structural support and efficiency in installation. Therefore, when a branch line hanger is placed on the starter piece, it effectively allows three additional branches to be supported without requiring further intermediate hangers in this specific configuration, leading to greater flexibility in the design and layout of the sprinkler system.

Understanding these guidelines is crucial for ensuring that the sprinkler system operates effectively and is compliant with safety standards.