ALL ABOUT DIAPHRAGM WALLS
Cut it, to Seal it !
Prologue
THE WORLD OF DIAPHRAGM WALLS WELCOMES YOU
A diaphragm wall is a reinforced concrete wall that is cast in situ, with the surrounding soil providing an encasement. Diaphragm walls provide rigid, cost effective solutions for permanent retaining walls and shafts with the least construction joints. They are particularly suitable for large, more open sites where structures greater than 25m deep are required.
WHY, WHEN AND WHERE ?
Highly saturated soils, high groundwater, unstable soils, and confined or restricted job sites are typical problems encountered on deep, urban excavation projects. Treating these problems individually by conventional methods can be prohibitively expensive and time consuming. Conventional approaches also often involve vibration-intensive techniques that may create unacceptable risks to adjacent structures. The concrete diaphragm wall construction method addresses all of these concerns in a single, safe operation. In addition to providing effective groundwater control and earth retention, they can also act as temporary or permanent load bearing support. In many cases, the technique eliminates the need to underpin adjacent structures. The virtually vibration-free operation minimizes the potential for ground movement and its resulting detrimental settlement.
The Diaphragm walling technique offers improved verticality tolerances compared to piled walls, and delivers a smooth wall finish.
THE EQUIPMENT
A typical Diaphragm Wal construction operation employs equipment which can be broadly classified into the following heads :
Trenching Equipment;
Lifting Equipment;
Miscellaneous Equipment
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Although the equipment are important to the success of the operation, the Diaphragm Wall Grabs in particular are the heart and soul of the operation.
