35 +
Completed Projects
5 +
Years of Experience
10000 +
RMC Diaphragm Wall Done
20 +
Projects with Depth > 15m

What is Diaphragm Wall?

A diaphragm wall is a structural concrete wall constructed in a deep trench excavation, either cast in situ or using precast concrete components. Diaphragms walls are often used on congested sites, close to existing structures, where there is restricted headroom, or where the excavation is of a depth that would otherwise require the removal of much greater volumes of soil to provide stable battered slopes.

Diaphragm walls are suitable for most subsoil and their installation generates only a small amount of vibration and noise, which increases their suitability for works carried out close to existing structures. In addition, floor slab connections and recessed formwork can be incorporated into the walls.

The walls generally range in thickness from 500 - 1,500 mm and can be excavated to depths of over 50 m. Excavation is typically carried out using rope-suspended mechanical or hydraulically-operated grabs.

The excavation stability is maintained by the use of a drilling fluid, usually a betonies slurry. This is a controlled mixture that has thixotropic properties, meaning that it exerts a pressure in excess of the earth and hydrostatic pressures on the sides of the excavation. The walls are constructed, using reinforced or unreinforced concrete, in discrete panel lengths generally ranging between 2.5 - 7 m. Purpose-made stop ends can be used to form the joints between adjacent panels, with a water bar incorporated across the joints.

Difference of Traditional Piling and Diaphragm Wall

Particulars Traditional Piling Diaphragm Wall
Cost of Construction More Less
Time of Construction More Less
Grout Usage Less Zero Usage
Effectiveness in Soil Less More
Effectiveness in high water table Less More
Need of basement wall to cover piling Yes No
Usage of Material More Less
Stability & Verticality Less More
Advantage of digging deep Less More


- Top-Down Construction
- Cantilever Design Construction
- Strut System for Anchor Free Solution
- Soil Anchoring
- Top-Down Construction
- Diaphragm Wall Design
- Concreting Work
- Piling works – Micro Piling and Sheet Piling
- In deep basements in unstable soil profile
- In high water table area as a retaining wall
- Can be installed from 10 m to 30 m depth
- Widely used in riverfront and sea front projects
- Suitable for Top-Down Construction in Metro Projects
- Formation of Diaphragm Wall thickness of 400 mm to 1500 mm width
- Carrying vertical loads
- Considerably lower basement construction time
- Economical and Positive solution for deep and large basements
- For Seepage Control in Dams


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