Which pipe type is recommended for building connections in storm sewers?

The recommended pipe type for building connections in storm sewers is cast iron soil pipe. Cast iron has several beneficial properties that make it suitable for storm sewer applications. It boasts exceptional strength and durability, which is crucial for withstanding the weight of soil and any potential traffic loads above ground. Additionally, cast iron pipe is resistant to corrosion, especially in comparison to other materials that might degrade over time when exposed to the elements and various chemicals found in stormwater runoff.

Cast iron pipe also provides excellent flow characteristics and is less prone to damage during installation or in service, which can reduce the likelihood of leaks or failures in the system. Its ability to handle varying thermal expansion and contraction further enhances its effectiveness in storm sewer applications.

In contrast, other materials like PVC pipe may be more commonly used in residential applications due to their lightweight and ease of installation, but they might not provide the same level of durability and resistance to environmental stresses as cast iron. Vitrified tile pipe, while once a popular choice, has largely fallen out of favor for new installations due to concerns over brittleness and the potential for cracking. Steel pipe, while strong, is also prone to corrosion unless adequately coated, making it less ideal for long-term use in storm sewers where reliability and