International Residential Code (IRC) Plumbing Practice Test 2025 – Complete Exam Prep

In multipurpose piping systems, fire sprinkler piping is required to be integrated into the cold water distribution system. This requirement ensures that the fire sprinkler system has a reliable and adequate water supply to function effectively during a fire emergency. By connecting to the cold water system, the fire sprinklers can utilize the main water supply while also maintaining sufficient pressure and flow needed for fire suppression.

This integration is also crucial for simplifying the plumbing infrastructure within a building. It helps to reduce the total number of pipes needed, which can lead to cost savings in both materials and labor, while still adhering to safety standards for fire protection. Additionally, having the fire sprinkler system part of the cold water distribution helps to ensure that it complies with the specific design and performance requirements outlined in the International Residential Code concerning water supply and system capabilities.