In cold storage areas, what is the pitch required for all branch lines?

In cold storage areas, the required pitch for all branch lines is essential to ensure proper drainage and prevent water accumulation, which could lead to freezing and operational issues. The standard for these applications often stipulates a pitch of 1/4 inch per 10 feet. This specific slope allows for adequate flow back to the main drainage points, minimizing the risk of low spots where water could collect.

Maintaining this pitch is crucial since any stagnation in water can lead to freezing, particularly in cold storage environments where temperatures are low. Therefore, the requirement for branch lines to have this specific pitch is based on practical considerations surrounding system functionality and safety. Keeping water flowing toward drain points ensures that the system remains efficient and reduces the risk of damage and maintenance problems.