Diaphragm Walls

Creates temporary or permanent deep foundation and earth retention walls

For shaft construction

01/03
I-35 Stormwater Storage Facility  |  Minneapolis, MN

Say something about why this technique was used on this project. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent eu enim ut neque hendrerit ullamcorper vitae nec ipsum. Nullam vehicula hendrerit tortor sed imperdiet.

For shaft access

02/03
Shoreline Storage Tunnel  |  Cleveland, OH

A new CSO tunnel in Cleveland was constructed as part of Project Clean Lake, a 25 year clean water initiative to keep the waterways of Lake Erie clean. We were contracted to install three deep diaphragm wall access shafts at three sites along the tunnel alignment to launch and retrieve the TBM.

For support of excavation

03/03
Portland CSO Basin  |  Louisville, KY

The Portland CSO Basin was one of many constructed by the Louisville and Jefferson County Metropolitan Sewer District to control overflows. We were contracted to construct a 42-inch thick unreinforced concrete diaphragm wall to act as the support of excavation shaft.

arrow rightleft arrow

For shaft construction

01/02
I-35 Stormwater Storage Facility  |  Minneapolis, MN

Say something about why this technique was used on this project. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent eu enim ut neque hendrerit ullamcorper vitae nec ipsum. Nullam vehicula hendrerit tortor sed imperdiet.

For shaft access

02/02
Shoreline Storage Tunnel  |  Cleveland, OH

A new CSO tunnel in Cleveland was constructed as part of Project Clean Lake, a 25 year clean water initiative to keep the waterways of Lake Erie clean. We were contracted to install three deep diaphragm wall access shafts at three sites along the tunnel alignment to launch and retrieve the TBM.

arrow rightleft arrow

What are diaphragm walls?

Diaphragm walls are used to create temporary or permanent deep foundations and earth retention walls for deep basements, shafts, parking garages, marine structures, dams and permanent cutoff walls.

How do they work?

Also known as slurry walls, diaphragm walls are formed when deep trenches are excavated into the soil, where reinforced concrete is then placed. Mechanical or hydraulic clamshell grabs or hydrofraise mills are used to excavate the panels, and then the trenches are stabilized by the use of a supporting slurry.

Why do you need diaphragm walls?

Diaphragm walls can be used for earth retention schemes for highway and tunnel projects, as permanent walls for deep shafts for tunnel access and as permanent cut-off walls through the core of earth dams.

Nicholson’s advantage

Nicholson’s advantage

  • Developed the first Hydrofraise through our parent company, Soletanche Bachy.
  • Experience in a variety of applications (CSO, SOE, cut-walls)
  • Extensive design knowledge in all types of soil conditions.
  • Access to equipment and experts from our global network.
plus icon

Did you know?

The Portland CSO diaphragm wall contains no reinforcing steel, but is held together by compression hoop stresses.

Did you know?

Have a question? Need advice? Just want to catch up?

Let’s connect.

Contact Us