Comparison of conventional and Osterberg cell pile load tests

Osterberg cell and conventional compression pile load tests have been conducted on two adjacent large diameter cast-in-situ bored piles to compare the pile performance under the two loading cases. It is found that the O-cell pile demonstrates different load transfer characteristics along the pile shaft to that of conventional load test pile. However, the equivalent pile head load-displacement curve can be constructed with reasonable accuracy from both bottom O-cell test and mid O-cell test as compared to that of conventional load test.