What additional support is necessary when copper piping is installed in concrete?

When copper piping is installed in concrete, it is crucial to use plastic sheathing as an additional support measure. This is primarily to protect the copper pipes from corrosion that could occur due to the concrete’s alkalinity and moisture. The plastic sheathing acts as a barrier, preventing direct contact between the copper piping and concrete, which could lead to deterioration over time.

Moreover, the installation of copper pipes in concrete can expose them to shifts or movements in the concrete structure, and plastic sheathing allows for some flexibility to accommodate these movements without stressing the pipes. This method is aligned with best practices outlined in the International Mechanical Code (IMC), ensuring that piping systems maintain their integrity and durability over time.

Using alternative options such as heat insulation or rubber grommets may not provide the necessary protection against corrosion, while metal brackets might not effectively address the risk of chemical reactions between the concrete and the copper. Thus, plastic sheathing is the most appropriate choice for safeguarding copper piping in such environments.