TY - JFULL AU - Thanawat Chuleekiat PY - 2019/4/ TI - Shaft Friction of Bored Pile Socketed in Weathered Limestone in Qatar T2 - International Journal of Geotechnical and Geological Engineering SP - 136 EP - 140 VL - 13 SN - 1307-6892 UR - https://publications.waset.org/pdf/10010131 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 147, 2019 N2 - Socketing of bored piles in rock is always seen as a matter of debate on construction sites between consultants and contractors. The socketing depth normally depends on the type of rock, depth at which the rock is available below the pile cap and load carrying capacity of the pile. In this paper, the review of field load test data of drilled shaft socketed in weathered limestone conducted using conventional static pile load test and dynamic pile load test was made to evaluate a unit shaft friction for the bored piles socketed in weathered limestone (weak rock). The borehole drilling data were also reviewed in conjunction with the pile test result. In addition, the back-calculated unit shaft friction was reviewed against various empirical methods for bored piles socketed in weak rock. The paper concludes with an estimated ultimate unit shaft friction from the case study in Qatar for preliminary design. ER -