The embedded joints of piping in a building must be compliant with what joining method for copper?

The correct joining method for embedded joints of piping in a building for copper is brazing. This method is particularly well-suited for applications where high strength and good thermal performance are required, especially in a construction environment.

Brazing involves joining two metals by melting and flowing a filler metal into the joint. Unlike soldering, which typically occurs at lower temperatures, brazing is conducted at higher temperatures, allowing for a stronger bond that can withstand higher pressures and challenging environmental conditions. This characteristic makes brazing an appropriate choice for embedded piping applications, as it provides durability and reliability over time.

In addition, brazing offers the advantage of requiring less thermal precision during the joining process compared to welding, which is crucial in building settings where surrounding materials may be affected by high heat. Therefore, when considering the best method for embedded copper piping, brazing stands out as the preferred technique due to its ability to create robust, long-lasting joints suitable for various mechanical and environmental stresses.