Understand that if the earthquake is sufficiently large, Mother Nature will always win. However, studies performed after several recent major earthquakes (Kobe, Japan – magnitude 6.9 – 1995, Northridge, CA – magnitude 6.7 – 1994, and Loma Prieta, CA – magnitude 7.0 – 1989) show that ductile iron piping systems suffered significantly less damage than other piping materials.

TR-XTREME®, is our restrained joint pipe that is used for seismic applications, and have often been used to cross fault lines to increase the survivability of the pipeline. When used for this purpose, the TR-XTREME is installed only partially extended. TR-XTREME® pipe is designed for areas of seismic activity. TR-XTREME is the first and only domestic earthquake resistant ductile iron pipe that provides expansion/contraction and deflection within a single restrained bell joint connection.

TR-XTREME joints provide 2.9″ of extension capability to accommodate ground settlement and soil liquefaction during earthquakes while providing joint flexibility up to 5° for 6″, 8″, 12″, and 16″ diameters. TR-XTREME is also available in 20″ and 24″ diameters, and 20″ provides up to 4° deflection, and 24″ provides up to 3° deflection respectively.

Click here to learn more about TR-XTREME Restrained Joint Pipe