Jayanarayanan u

Standard Penetration Tests is conducted as per IS: 2131-1981 at 1.50meter interval in all the bore holes. The number of blows for each 15 cm of penetration was recorded. The blows required to penetrate the initial 15 cm of the split spoon for seating the sampler is ignored . The cumulative number of blows required to penetrate the balance 30cm from the 45 cm of split spoon sampler is termed the SPT value or the ‘N’ value #CivilEngineer #structuralengineering #foundation #constructionsite