CiviLab 2027 · Soil tests

Standard penetration test (SPT)

The standard penetration test (SPT) is an in-situ geotechnical test used to measure soil properties. The SPT consists of driving a standard sampler into the soil with blows from a 63.5 kg hammer falling from a height of 76 cm.
The SPT result is the number of blows N (penetration resistance) required to drive the sampler into the soil over a depth interval of 0.3 m (1 ft).

Sample test sheet (PDF) CiviLab pricing

With our soil software "CiviLab", you can easily perform the calculations and plot the SPT profiles. CiviLab also produces high-quality reports and archives them properly


For the standard penetration test, CiviLab applies the following standards:

  • NF EN ISO 22476-3;
  • BS EN ISO 22476-3.

CiviLab calculates (according to the standard):

  • The correction factor for vertical stress CN;
  • The user correction factor λ;
  • The corrected values N60 and (N1)60;

Screenshots

Standard penetration test (SPT): screenshot No. 02, Soil laboratory software CiviLab 2027 — BAKHTI Software
Standard penetration test (SPT): screenshot No. 03, Soil laboratory software CiviLab 2027 — BAKHTI Software
Standard penetration test (SPT): screenshot No. 04, Soil laboratory software CiviLab 2027 — BAKHTI Software

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