Vane shear (lab / field) calculator

Inputs in the worked example

The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.

Worked example — results

• ✓ Vane H/D = 2

Method, formulas and assumptions

• Vane constant π D²(H/2 + D/6) = PI()*(65/1000)^2*(130/2000+65/6000) = 0.0010066 m³
• su (peak) = 42/0.0010066/1000 = 41.727 kPa
• su (remoulded) = 11/0.0010066/1000 = 10.928 kPa
• Sensitivity = 41.727/10.928 = 3.8182
• Bjerrum μ = 1.7 − 0.54 log PI = 1.7-0.54*LOG10(35) = 0.8662
• Corrected su = 0.8662*41.727 = 36.144 kPa

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