How should copper tubing be installed for water piping under a concrete slab?

Installing copper tubing for water piping under a concrete slab should be done in a straight line without joints where possible. This approach minimizes the potential for leaks and provides a continuous flow path for water. By reducing the number of joints, the likelihood of failure at those junctions is decreased. Joints can be points of weakness, especially if subjected to movement, temperature changes, or corrosion over time, all of which can compromise the integrity of the piped system.

While having joints at regular intervals, using additional protective casing, or installing in specified sections may offer certain benefits, they do not provide the same level of structural integrity or reduce the risk of leaks as effectively as minimizing joints. A straight line installation is the most efficient and reliable method, ensuring that the copper tubing can withstand the conditions under a concrete slab.