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Direct Simple Shear Test System

PDFDirect Simple Shear Product Specification PDFSample Geotechnical Report pdfCap and Pedestal Options


The ShearTrac II direct simple shear (DSS) system is used to measure undrained shear strength of soils to reflect the average shear strength mobilized in the field during failure of embankments on soft soil foundations and deep excavations in clay. The DSS test generates a fairly homogeneous state of shear stress throughout the specimen, which provides initial stress condition, stress path, and deformation configuration that models numerous field loading conditions more closely than any other test system.

Applicable Test Standards

  • ASTM D2435, D6528
  • AASHTO T 216


  • Choose load capacity to fit user needs up to 11 kN (2,500 lbs.)
  • Total automation of data collection and reporting of test results
  • Prepare tables and plots of report quality within minutes of completing a test
  • Generate columns of data for easy reduction using your own spreadsheet software
  • Ability to access and control the unit over a computer network using Geo-Net option
  • Accurate displacement rate control from 0.00003 to 15 mm/min (0.000001 to 0.6 in/min)
  • Stand alone through front keypad and LCD menu capability
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