Standard Penetration Test

The Standard Penetration Test (SPT), a widely used in-situ dynamic penetration test, is conducted to gather essential information about the geotechnical engineering properties of soil. As a globally recognized subsurface exploration drilling method, the SPT serves a dual purpose: providing soil samples for identification and determining the penetration resistance (N-value). This N-value is crucial for various geotechnical design applications. The standard test procedures outlined in IS:2131-1981 (Reaffirmed 2021) are adhered to. Furthermore, the established local and international correlations that link the obtained blow count or N-value to key engineering properties of the soil are utilized, enabling comprehensive geotechnical insights.