Support hangers for 10-foot lengths of cast-iron soil pipe suspended from a ceiling shall be spaced not more than _____ feet.

In plumbing and construction, proper support for pipes is crucial to ensure stability and prevent damage or failure over time. For cast-iron soil pipes, which are relatively heavy due to their material composition, the spacing of support hangers is specifically regulated.

When it comes to supporting 10-foot lengths of cast-iron soil pipe, the recommendation is to space hangers no more than 10 feet apart. This spacing helps to distribute the weight of the pipe evenly and minimizes the risk of sagging or movement that could lead to stress on joints or connections. Moreover, having adequate support ensures that the installation remains aligned and functions correctly, reducing the likelihood of leaks or other plumbing issues.

In some contexts, different materials or pipe sizes may have varied support requirements, which can make other spacing options less suitable for cast-iron pipes. The 10-foot recommendation aligns with standard plumbing practices that prioritize the longevity and reliability of piping systems.