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Work from a manhole usually becomes necessary when dirty water and sewer pipes are newly installed or when a collapsed sewer demands renewal, as shown in the example. First of all, the pipe line is established with a GRUNDOPIT. Then the pipe was renewed with the manhole pipe bursting machine.

Application example:
Total collapse of a storm water sewer beneath a building
Old pipe: concrete ND 300
New pipe: PP-HM, OD 280 x 18.0 mm
Replacement length: 30 m

Schematic illustration
New installation from out of or in direction of the manhole, i.e. for dirty water and sewer pipes or data cables installed in the sewer.
1. Boring line with GRUNDOPITM 2. Pipe renewal with GRUNDOBURSTM

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