Deep foundations provide support to structural loads when competent soils or rock in shallow foundations are not feasible due to weak, compressible soils near ground surface. RECON is experienced in a variety of deep foundation methods and techniques to provide long-term and cost-effective solutions, such as:

  • Driven Piles
  • Drilled Piles
  • Diaphragm Walls
  • Grouting

Driven / Drilled Piles:

Driven piles are deep foundation methods that are driven to a predetermined depth. Common types of driven piles include sheet piles, pipe piles, and concrete piles. Driven piles methods resist compressive, uplift, and lateral loads. These techniques have been used to provide support for buildings, tanks, towers, and bridges. They have also been used to provide lateral support as an earth retention wall. Common types of drilled piles that RECON is experienced with include auger-cast piles and caisson piles.

Diaphragm Walls:

Diaphragm walls are commonly used in congested areas for retention systems and permanent foundation walls. They can be installed in close proximity to existing structures with minimal loss of support to existing foundations. In addition, construction dewatering is not required, so there is no associated subsidence. Due to a diaphragm walls’ ability to keep deformation low and cause little vibration, they are convenient for civil engineering projects in densely populated metropolitan areas.

Grouting:

RECON’s grouting methods provide solutions to a variety of complex geotechnical solutions. We self perform work on our own equipment with our experienced operators. Our in-house subject matter experts understand the grouting processes thoroughly and help clients with solutions to their complex geotechnical challenges.

Jet grouting is a soil improvement technique used for solidifying soils. To complete the process, RECON injects liquids containing grout or binders into the soil at a high velocity. These binders break up the soil structure and mix the soil particles in-situ to create a homogeneous mass that solidifies. This technology is applicable for increasing soil strength to support foundations and for reducing consolidation. Jet grouting can also lower the permeability of soil and thereby controlling the flow of groundwater for tunnel construction and basements, and mitigate the movement of contaminated groundwater.

The technique of permeation grouting consists of pumping a low-viscosity grout into affected granular soils through a predrilled hole and injection pipe to modify the ground characteristics with the hardening or materializing of the grout.  Permeation grouting serves to increase the strength and stability of the soils or to reduce the permeability of the soil.