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Soft Inclusion Stress Cells (VW) | Model 4360

  • Model 4360-1-1 Soft Inclusion Stress Cell (hydraulically actuated).
  • Model 4360-1-1 Soft Inclusion Stress Cell (hydraulically actuated), in setting tool assembly.
  • Model 4360-1-2 Soft Inclusion Stress Cell (mechanically actuated).
  • Model 4360-2-2 Soft Inclusion Stress Cell (mechanically actuated).
  • The GO Gage (NX size), attached to the installation tool, is used to check for the correct borehole diameter.
  • The NX GO and NO-GO Gages, shown disassembled with installation tool.
Model 4360

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
35 kPa
±0.5% F.S.
Temperature Range³
−20°C to +80°C
Borehole Diameter³
NX, PQ, HQ, 152 mm

¹Proportional to rock modulus; figures given are for E = 0.03 × 106 MPa.

²Established under laboratory conditions.

³Other ranges and diameters available on request.

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.