Tensar® Stratum® Cellular Foundation Mattress System

3D Cellular Foundation Mattress
1.3 Metres Deep Structure
35 Years of Proven Technology
  • Proven foundation improvement solution
  • Provides stability without the need for piles or other ground improvement measures
  • No need for excavation of weak foundation soils
  • Allows faster construction
  • Suitable for many applications where weak soils are present
  • Control differential settlement
Overview

When dealing 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, there is usually no need for excavation and removal of subsoil as the cellular foundation mattress is constructed directly over the weak soil and filled with granular material to create a competent mattress system. 

Product Range

Components used to fabricate the TensarTech Stratum system include transverse geogrid diaphragms, diagonal geogrid diaphragms, base geogrid and ancillary items

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. 

 Stiff Raft Foundation 

Used when new embankments are sited over weak and variable ground, including waste deposits and brownfield sitesThere is usually no need for excavation and removal of the subsoil as the cellular foundation mattress is constructed directly over the weak soil and filled with granular material to create a stiff raft foundation.  

Cellular Structure – Built in place   

The TensarTech Stratum System is a continuous cellular structure, rapidly fabricated on site using a Tensar TriAx geogrid base, and cell walls formed with Tensar uniaxial geogrids secured at their intersection using simple polymer rods or bodkins. If required, after filling, the mattress can easily accommodate vertical wick drains to further accelerate consolidation.  

Improved Stability 

The Tensar Stratum Cellular Foundation Mattress 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.