Description of the Unified CPT method for driven piles

The formulations employed by the program are described in the following links:

Sand Method

Lehane B.M., Liu Z., Bittar E., Nadim F., Lacasse S., Jardine R.J., Carotenuto P., Jeanjean P., Rattley M., Gavin K., Gilbert R., Haavik J. and Morgan N. (2020). A new CPT-based axial pile capacity design method for driven piles in sand. Proc 4th Int. Symposium on Frontiers in Offshore Geotechnics, ISFOG-4, Austin, Texas, 462-477.

Clay and silt method

Lehane B.M., Liu Z., Bittar E., Nadim F., Lacasse S., Bozorgzadeh N., Jardine R.J., Ballard J-C, Carotenuto P., Gavin K., Gilbert R.B., Bergan-Haavik J., Jeanjean P. and Morgan N. (2022). CPT- based axial pile capacity design method for driven piles in clay. J. Geotech. & Geoenv. Engrg., ASCE, 148(9):04022069; https://doi.org/10.1061/(ASCE)GT.1943-5606.0002847

Static resistance to driving (SRD) in sand

SRD can be determined by adjusting the program output for pile capacity in sand in line with formulations provided at this link.

Driven Pile Illustration

The Unified CPT method was developed as part of a joint Industry project (JIP) managed by the Norwegian Geotechnical Institute in collaboration with The University of Western Australia. The JIP was supported by Equinor, Lundin Oil, Ørsted, ONGC, BP, TOTAL, ExxonMobil, EnBW, EDF, Aramco, SSER and HDEC.

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