Who are we

North American Society for Trenchless Technology

Founded in 1990, the North American Society for Trenchless Technology (NASTT) is a not-for-profit educational and technical society that is dedicated to promoting the benefits of trenchless technology for public awareness through education, training and research. Membership is open to individuals, agencies and companies involved with providing gas, water, sewage, communications and electrical services. NASTT has a network of seven regional chapters throughout North America.

NASTT-Northwest Chapter

The NASTT-Northwest (NASTT-NW) chapter was founded in 1995. To view a slide show which describes the history of the chapter and provides additional background information, please click here.

The Chapter’s goals are:

• To advance the science and practice of trenchless technology for the public benefit;
• To promote and conduct education, training, study and research in said science and practice for the public benefit; and to make available information thereof to all interested and concerned parties.

For information on trenchless conferences, technical lunches, and training opportunities offered in various regions by the chapter, please see the Upcoming Events Calendar on the sidebar or check out the Events page.

Trenchless Technology

Trenchless technology includes techniques for utility line installation, replacement, rehabilitation, renovation, repair, inspection, location and leak detection, that require minimum excavation from the ground surface. This includes directional drilling, microtunneling, moling, pipe ramming/pushing, auger boring, pipe jacking, utility tunneling, pipe relining, and various underground rehabilitation approaches. The technology is particularly suited for crossing projects and projects located within urban areas where surface disturbance must be minimized.