What distance can a riser supported section span before requiring additional support?

In the context of sprinkler fitting and pipe support requirements, the correct distance that a riser-supported section can span before needing additional support is indeed 25 feet. This standard is typically based on industry codes and regulations that ensure adequate support for piping systems to prevent sagging, bending, or potential failure due to unsupported spans.

When a riser-supported section spans up to 25 feet, it is considered that the structural integrity is sufficiently maintained under normal operating conditions. Beyond this distance, stress and load factors can increase, leading to potential issues with pipe alignment and the overall functionality of the system. Therefore, additional support becomes necessary to ensure that the pipes remain secure and operational over time.

It's essential for professionals in the field to be familiar with these specific measurements to comply with local codes and safety standards, ensuring that installations are not only effective but also safe and durable.