High Strain Dynamic Pile Testing and Static Load Test- A Correlation Study

High Strain Dynamic Pile Test (HSDPT) is increasingly being used for pile load testing. HSDPT offers a considerable savings of time, cost and requires very little space compared to the conventional static test. This study presents results of nine HSDPT carried out on rock socketed bored piles of 600mm, 800mm and 1000mm diameter. The load-settlement response derived from HSDPT is compared with that observed in conventional static load test. In all the piles, first static load testing was completed. The settlement values observed in HSDPT and static load test compare well up to 150% of working load. The paper also explains the test pile selection criteria adopted in the study.