The GDSTTA allows independent control of stresses applied in three dimensions to a cuboidal soil sample. The ability to independently control the stresses applied in three dimensions allows the true stress-strain-strength behaviour of soil to be studied. Technical specification: Maximum Cell Pressure: 2 MPa. Actuators: 4 off 28kN Hydraulic sealless, hydro-static bearing actuators. Sample Visibility: Via large sample viewing window (also in place for PIV applications). Sample Access: Via front opening cell door. Data Acquisition: 16 Channel 16-bit data acquisition. Electrical Access Ports: 16 access ports for pressure or electrical feed throughs into the cell. Hydraulic Power Pack: Optional air or water cooled.

Unit 32 Murrell Green Business Park, London Road, Hook, Hampshire, RG27 9GR, UK. Tel.:+44 (0) 1256 382450, FAX:+44 (0) 1256 382451, e-mail:sales@gdsinstruments.com