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combine a carrier (felt or fibreglass) impregnated with heat, ultraviolet light, or ambient curable resin to form a "pipe within a pipe". Pipe bursting fractures a pipe from the inside and forces the fragments outwards while a new pipe is drawn in to replace the old. The other methods are primarily for fixing spot leaks. Trenchless rehabilitation methods are generally more cost-effective than traditional exhume (dig) and replace methods.
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The method requires considering soil characteristics and the loads applied to the surface. In cases where the soil is sandy, the water table is at shallow depth, or heavy loads like that of urban traffic are expected, the depth of excavation has to be such that the pressure of the load on the surface
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is applied where damaged pipelines require the reinstatement of structural integrity. Sliplining, CIPP, and thermoformed pipe lining involve pulling or inverting a new liner into an existing pipe, then applying heat and/or pressure to force the liner to expand to fill the pipe. CIPP technologies
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industry. It can be defined as "a family of methods, materials, and equipment capable of being used for the installation of new or replacement or rehabilitation of existing underground infrastructure with minimal disruption to surface traffic, business, and other activities."
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techniques are larger versions of subsurface construction. The difference between trenchless and other subsurface construction techniques depends upon the size of the passage under construction.
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The trenchless technology industry is represented by several industry associations in addition to standing committees within almost every water and sewer related industry association. The
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is a type of subsurface construction work that requires few trenches or no continuous trenches. It is a rapidly growing sector of the
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184:(HAB) and other methods for the installation of pipelines and cables below the ground with minimal excavation. Large diameter
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Several organizations bring out technical
Journals for sensitizing the readers about such techniques.
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283:(NASSCO) was established in 1976 and is the oldest such association with a trenchless focus. The
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Trenchless rehabilitation includes such construction methods as spiral wound lining,
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335:"Evaluation of Trenchless Technology Methods for Municipal Infrastructure System"
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does not affect the bore, otherwise there is a danger of the surface caving in.
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379:. U.S. Army Corps of Engineers Engineering Research and Development Center.
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Kramer, Steven R.; McDonald, William J.; Thomson, James C. (2012-12-06).
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Center for
Underground Infrastructure Research and Education CUIRE
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Trenchless construction includes such construction methods as
374:"Guidelines for Pipe Bursting, TTC Technical Report #2001.02"
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Simicevic, Jadranka & Sterling, Raymond L. (March 2001).
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Underground construction that minimizes surface disruption
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to assist people in all area's of trenchless technology.
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United
Kingdom Society for Trenchless Technology (UKSTT)
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China Hong Kong
Society of Trenchless Technology CHKSTT
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60:. Unsourced material may be challenged and removed.
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419:United Kingdom Society for Trenchless Technology
285:North American Society for Trenchless Technology
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281:National Association of Sewer Service Companies
263:International Society for Trenchless Technology
333:Jung, Yeun J.; Sinha, Sunil K. (June 2007).
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459:Subterranean excavating equipment companies
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312:. Springer Science & Business Media.
120:Learn how and when to remove this message
309:An Introduction to Trenchless Technology
272:was established in 1993. UKSTT offers a
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351:10.1061/(ASCE)1076-0342(2007)13:2(144)
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58:adding citations to reliable sources
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339:Journal of Infrastructure Systems
287:(NASTT) was established in 1990.
212:Pipe replacement by pipe bursting
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424:How Trenchless Technology Works
188:such as those constructed by a
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414:Trenchless Technology Magazine
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274:Trenchless Enquiry Service
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69:"Trenchless technology"
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250:Mechanical spot repair
246:mechanical spot repair
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454:Trenchless technology
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194:drilling and blasting
190:tunnel boring machine
133:Trenchless technology
164:(HDD) also known as
162:directional drilling
54:improve this article
464:Tunnel construction
242:grout-in-place pipe
238:cured-in-place pipe
180:, horizontal auger
257:Trade associations
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166:directional boring
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52:Please help
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192:(TBM), and
110:August 2013
448:Categories
294:References
218:sliplining
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18:Trenchless
359:1076-0342
230:shotcrete
154:tunneling
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