The International Society for Trenchless Technology

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1. Conductor Casing
Steel casing hammered or pushed into place where soil strata are high in gravel and cobble content or where formation strength is low and the bore would be unstable. ...
2. Contact Grout
A cement or bentonite-cement based mixture injected to fill annular space between pipe and the surrounding formation, or other voids. ...
3. Control Console
An electronic unit inside a container located on the surface that controls the operation of the microtunneling machine. Electronic information including head position, steering angle, jacking force, progression ...
4. Hole Openers
Downhole tool that uses rolling cutters to enlarge a hole in hard soil and rock formations.  ...
5. Washover pipe
... pipes may also be used to stablilize the bore when drilling in difficult unstable formations.  ...
6. Pipe Jacking & Microtunneling
... the MTBM has in-line cameras to relay information to the operator and a target system for guidance control. Precise control of line and grade is accomplished using the guidance system and steering ...
... hand to determine position and depth as well as clock-face position of the drill bit. This information allows the operator to track location along the planned bore and to make changes as needed. Drilling ...
There are currently almost 1500 papers available in the ISTT database. Papers from the International No Dig (2000 - 2017), North American shows  (2001 - 2007) are available in the PDF format. Abstracts ...
9. Communication & Outreach
... informative articles on trenchless projects and activities, reports on the activities of Affiliated Societies and of ISTT, carries timely messages from the Chairman and Executive Director of ISTT, and ...
10. Close-Fit Slip Lining
... static die systems, and compression deformed liners.  The tension deformation techniques use either a roller reduction die or static die to reduce the diameter of the thermoplastic pipe. Tension reduction ...
11. Gold Medal History
... history of ISTT. Below is the trenchless leaders who have received ISTT’s highest award. 1992, No-Dig Paris Mathieu le Chatelier served the ISTT from its formation until 1991. His drive and enthusiasm ...
12. CCTV
... to the point where the camera image records the edge of maintenance hole and pipe interface. As the camera progresses down the pipe, the distance from its launch point is recorded. Other information such ...
13. Join ISTT - Thank you page
We have sent an email to your registered email address.   Please check your inbox to find the bank account information (and Paypal link)  for your payment We will contact you  as soon as we confirm ...
14. The ISTT Team
(Uncategorised Content)
Enrico Boi - Chairman -NASTT Enrico Boi is a Civil Engineering graduate with a background in electronic and information technology. For the past 15 years, ...
15. Programs and Activities
(Uncategorised Content)
The 2011-2013 Strategic Operating Plan address three operational elements: (1) Trenchless Education and Training; (2) Trenchless Information; and (3) Trenchless Outreach. Trenchless Education and Training. ...
... Illustrations should be inserted to the text (one file per entry). Specify the category of the award from below. There is no template but to include all the necessary information (especially for project ...
17. Awards and Recognition
(Uncategorised Content)
...  Click here for more information on applying for an ISTT No-Dig Award. ISTT Affiliated Society Lifetime Service Award In the mid to late 80s, leaders in the trenchless construction community ...
18. Credits
(Uncategorised Content)
... web/digital agency. Note: All digital drawings by Pavoneggi. For more information, please contact us:  ...
19. Disclaimer
(Uncategorised Content)
1. ContentThe author reserves the right not to be responsible for the topicality, correctness, completeness or quality of the information provided. Liability claims regarding damage caused by the use of ...
20. Lifetime Service Award
(Uncategorised Content)
... in the Czech Republic. Mr. Drabek is the first to receive this award, which is given to a retired affiliated society member who has been instrumental in the formation of the society and in the promotion ...
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