08-10 Insulation of support

Question: 08-10Code Section: 7Date: 9 March 2008OBC 2006 Reference:

Question: Recently a question has arisen concerning the use of a copper fitting for use with plastic piping that has an integral support plate. The fitting in question appears to have a copper support plate; however, if you apply a magnet to the plate, the magnet is attracted and will attach itself to the plate. The plate is obviously steel and has been copper coated. The tubing itself is of a heavier gauge copper than type M. The question is should this fitting be allowed for use under given the potential galvanic action. Any part of the plate where the copper coating has not been completed, defective or otherwise ineffective could lead to leaks in the future. The fitting in question has apparently been approved for use.

Interpretation: According to the Building Code ” ….it shall be suitably separated”. This fitting meets that requirement. There is a coating on the metal to separate the copper from the metal. This fitting is “manufactured” for this purpose.

Interpretation: Approved at AMES 2008