Stratum® Cellular Foundation Mattress System

3D Cellular Foundation Mattress
4 Decades of Proven Technology
  • Proven foundation improvement solution
  • Provides stability without the need for piles or other ground improvement measures
  • No need for excavation of subsoil
  • Allows faster construction
  • Suitable for many applications where weak soils are present
  • Control differential settlement

When faced with soft foundation soils where expensive piling and other deep ground improvement solutions are unviable or too costly, the Tensar Stratum® cellular foundation mattress system provides an alternative approach for construction, often delivering time and cost savings. With Stratum cellular foundation mattress system, there is usually no need for excavation and removal of subsoil; the cellular foundation mattress is constructed directly over the weak soil and filled with granular material to create a competent mattress system.

Used when new embankments and/or heavy loads are sited over weak and variable ground, including waste deposits and brownfield sites, the Tensar Stratum system creates a cellular and stiff foundation platform that reduces the potential for differential settlement and increases bearing capacity.

The Tensar Stratum system is a continuous cellular structure, rapidly fabricated onsite using a base geogrid and cell walls formed with uniaxial geogrids. If required, the mattress can easily accommodate vertical wick drains to further accelerate consolidation.

System Components

The Tensar Stratum cellular foundation mattress system is primarily composed of a base geogrid and uniaxial geogrids.

Rapid Construction

The Tensar Stratum cellular foundation mattress system can provide initial construction access onto soft sites and is rapid to assemble, keeping your project moving quickly. Once filled with granular material, it acts as a stiff platform that provides a stiffened foundation with even and controlled settlement.

Improved Slope Stability

The Tensar Stratum cellular foundation system intersects potential failure planes. The rigidity of the Stratum system forces the failure planes deeper into the firm strata below. The critical failure mechanism then becomes that of plastic failure of the soft layer and the stability can be improved.

Reduced Lateral Shear Failure

The rough interface at the base of a Tensar Stratum cellular foundation reduces lateral spread and ensures mobilization of the maximum shear capacity of the foundation soil, further increasing stability.

For Whenever You Encounter Weak Soils

Tensar's Stratum system can be used for a variety of applications where weak or difficult soils are present, including roadway embankments over weak and wet ground, embankments over weak sub-structures with high levels of ground water, buildings constructed on variable ground and waste deposits, and crane pads and working surfaces with heavy loading.

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Design with confidence, from anywhere.

  • Design & evaluate pavement and gravel sections, working platforms, sub-ballast sections & more
  • Easily compare alternative materials
  • Determine initial and lifecycle cost savings, time savings, and sustainability metrics
  • High-level summary of the design alternatives for project stakeholders
  • Sharing features that aid collaboration

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