Soft Inclusion Stress Cells (VW)


The Model 4360 Vibrating Wire Soft Inclusion Stress Cells (SISC) are larger versions of the Model 4300 Borehole Stressmeters. The SISC is pre-loaded by wedging it into a large size diamond drill hole using an integral screw mechanism or hydraulic piston and can be set to measure both tensile and/or compression stress changes. It has been used successfully in 152 mm diameter overcoring holes (drilled to measure in situ stresses) to measure Aggregate/Alkali Reactions (AAR) in concrete dams.


  • Standard Range¹ : ±35 MPa
  • Resolution¹: 35 KPa
  • Accuracy² : ±0.5% F.S.
  • Temperature Range³ : −20°C to +80°C
  • Borehole Diameter³ : NX, PQ, HQ, 152 mm


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