The International Society for Trenchless Technology

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Total: 13 results found.

1. Slip Lining
(News/Guidelines)
Slip lining is perhaps the oldest of all trenchless techniques. It involves the insertion of a new pipe into an existing pipe. Under the right conditions, slip lining is also the simplest trenchless technique. ...
2. Close-Fit Slip Lining
(News/Guidelines)
... i.e., concentric reduction/expansion liners and folded liners. Concentric Reduction / Expansion Liner Techniques can be subdivided into two categories tension deformed liners, i.e., the roller die and ...
3. Cement mortar Liner
(News/Guidelines)
... of the coating to ensure good adhesion between the liner and the pipe wall. Cleaning techniques include high-pressure water jetting, scraping, pigging, rack-feed boring, and mechanically-driven devices ...
4. Mole Ploughing
(News/Guidelines)
... traditional underground construction methods requiring wide trenches. These two techniques use plows, cutter chains, or disc to open a furrow or narrow trench in which a flexible pipe or cable is inserted.  ...
5. Narrow Trench
(News/Guidelines)
... traditional underground construction methods requiring wide trenches. These two techniques use plows, cutter chains, or disc to open a furrow or narrow trench in which a flexible pipe or cable in inserted.  ...
6. Ground Pentrating Radar
(News/Guidelines)
There are a wide range of techniques available to locate buried pipes. Most of these systems use electromagnetic waves or signals transmitted into the ground or from underground utilities. These technologies ...
7. ISTT
(News/News head home)
...  What is Trenchless Technology? Trenchless technology covers any techniques, processes or procedures, including the equipment, machines and materials involved, which minimises or eliminates the need ...
8. Why Trenchless? ('No-Dig')
(Uncategorised Content)
Trenchless Technology involves the installation, replacement or renewal of underground utilities with minimum excavation and surface disruption. Several construction techniques and methods qualify as trenchless. ...
9. ISTT International NO-DIGS
(Uncategorised Content)
... have promoted trenchless applications and techniques for the public benefit by offering high-quality peer-reviewed technical papers presented by trenchless experts from the world over. An associated exhibition ...
10. 2012 ISTT No-Dig Award Winners
(Uncategorised Content)
... team soon discovered that site conditions required also using CIPP and pipe bursting at certain locations. Altogether, the project used five different trenchless techniques – spiral wound expanded ...
11. 2015 ISTT No-Dig Award Winners
(Uncategorised Content)
... of the turbines. The pipes are more than 60 years old and lie partially under plant surface structures. The owner could not replace the leaky pipe using conventional dig-out and replace techniques ...
12. Past Winners
(Uncategorised Content)
... Marianske Lazne Spa town with 80% of the sewers being rehabilitated using trenchless technologies Project 2 Community association of Cergy Pontoise France Cergy Pontoise trenchless multitechniques ...
13. Affiliated Societies no
(Uncategorised Content)
... was formed in 1991 and affiliated in 1992. There are 56 members, including 14 Corporate Members. The Association has published a Handbook on trenchless techniques available in Austria and national events ...

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