When metal piping is installed in plumbing systems, soil conditions and water content can affect the piping’s performance. This is especially true when different metals are connected, such as stainless steel and copper.
The American Society of Sanitary Engineering’s (ASSE) 1070 Standard, Performance Requirements for Water Temperature Limiting Devices is an industry standard for a point-of-use or in-line temperature-actuated mixing valve with a maximum temperature limit feature.
In Part 1, published in this magazine’s February 2022 issue, we talked about why buildings lean, how this phenomenon affects plumbing systems and drain lines, and how low-flow fixtures compound this problem.
With modern buildings, leaning just a little amount can affect the flow of waste in sloping drains. Settling drains can create shear stresses and rupture pipe penetrating foundation walls; they also can cause pipe to lose slope or experience reverse slopes.