|Question: 08-14||Code Section: 7||Date: 10 May 2008||OBC 2006 Reference: 18.104.22.168., 22.214.171.124.|
Question: Recently a question has arisen concerning the use of Type L soft copper for use in fire service mains. 126.96.36.199. says both, Type K and L soft copper can be used in a water distribution system. In Table 188.8.131.52., the chart only mentions Type K. Our question is ‘Why Type L soft copper is excluded from Table 184.108.40.206. ?’
Interpretation: The trouble with Type L goes way back to the times when flared joints were a common method of connections. Type L would not flare well without splitting. 220.127.116.11. is for “the distribution system” and 18.104.22.168 refers to “service pipes“. Therefore, the restriction for Type L as a service pipe is identified in the body of the code in Table 22.214.171.124. The new Code requires only Type K for services…..ALL services… not just fire mains as the question mentions. Also take note of the requirements of 126.96.36.199.(4) for joining of copper underground.
Interpretation: Approved at AMES 2008