Pile design in permafrost

Principles for designing piles in permafrost on the basis of both ultimate capacity and limiting deformations are reviewed. Procedures developed previously for predicting settlement of piles in ice-rich soils are extended to ice-poor materials and shown to be in reasonable agreement with the modest amount of field data currently available. A compilation of data on allowable adfreeze strength data, frozen soil creep data, and pile design procedures has been undertaken to facilitate selecting allowable loads on piles in a broad range of permafrost soils. Illustrative examples are given in an Appendix.