🧱 Standard Penetration Test (SPT) 🔹 Definition: The Standard Penetration Test (SPT) is a field test performed in boreholes to determine the strength, density, and bearing capacity of soil at different depths. It is one of the most commonly used in-situ soil tests in geotechnical investigation. 🔹 Objective: To find the SPT N-value, which indicates the resistance of soil to penetration — used to design foundations, piles, and footings safely. 🔹 Equipment Used: Tripod stand with pulley Hammer (

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