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PIPE JACKING

All though Pipejacking is a tried and accepted method of pipe installation, here in South Africa, and mainly used for the installation of pipelines and ducts at crossings, under railways and highways, the benefit of minimum disruption to both traffic and the public can be emphasized.

Trenchless technology has become an accepted, both as a principle and as a technique and is a trenchless method of piplaying. It describes a specific trenchless technique for installing pipes.Lately it has been used as a more general term for a principle to a number of trenchless techniques.

Pipejacking is the name given to the technique of installing pipe of man-entry size, by pushing sections from a drive shaft into a hole formed, to provide a continuous tunnel lining.

These sections do not have to be circular, but can be of almost any dimension. Diameters considered man-entry, may vary slightly from one country to the next.

Here at TRG International a 900mm Internal diameter pipe is installed and accepted as the lower limit. Typically diameter jacking pipe are.

Pipe Jacking by TRG International
 
Nominal
Diameter
Inside
Diameter
Outside
Diameter
Wall
Thickness
Standard
Lead
Length Mass
(mm) (ID mm) (OD mm) (T mm) (mm x mm) (mm) (Kg/unit)
840 Butt 810 1034 112 50 x 10 2260 1878
900 880 1100 110 200 x 20 2500 2190
1050 1030 1250 110 200 x 20 2500 2523
1117 1117 1375 129 424 x 20 2260 2922
1200 1150 1390 120 200 x 20 2500 3065
1350 1350 1600 125 200 x 20 2500 3708
1473 1473 1780 154 560 x 20 2260 4540
1500 1460 1720 130 200 x 20 2500 4158
1800 1760 2120 180 200 x 20 2500 or2300 7025
1880 1880 2236 178 756 x 20 2000 5760
2000 Butt 2032 2432 200 80 x 12 2000 7000
2100 2100 2500 200 200 x 20 2000 7400
2350 2350 2950 300 200 x 20 2000 12795
2400 2400 2800 200 80 x 12 1000 4180
2500 2500 3000 250 200 x 20 1500 or 2440 13493