Diaphragm Wall Grabs
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Diaphragm Wall Grab
Introduction
Diaphragm Wall Grabs for digging diaphragm walls by building tunnels etc. This diaphragm wall will be filled with concrete, because of this there will arise a carrying, a water- a or sand baffling construction.
During the digging, a Bentonite liquid will be added to support the diaphragm wall. The stability of the diaphragm wall will arise because of the hydrostatical pressure of the liquid.
Digging diaphragm walls will take place at great depths, 50 meters or more isn’t unusual.
This type of grab is available in every capacity and weight required.
Mechanical grabs are the best solution to excavate diaphragm walls in all soil conditions up to a soil hardness of 70 mPA as light chiseling work is possible. The SWG series of diaphragm wall grabs is available with grab extensions for a total length of 10 or 12 m and also with extra ballast to reach a total weight of up to 22550 kg for even the most demanding projects.
Jaws may be rectangular or round shape. Jaws, ropes, pulleys and different teeth can be quickly replaced on site without any problems. All rope and guide pulleys have adequately dimension-ed , maintenance-free bearings filled with grease.
We also supply hydraulic diaphragm wall grabs with inclination measuring and monitoring systems to guarantee a verticality of the diaphragm wall of 1 : 800.