The book, Helical Piles, by Howard Perko attempts to cover all aspects of design and installation. However, the field of helical piles is constantly changing and new discoveries are being made. Also, some material is better presented on-line. Below are some electronic materials from the book as well as some bonus material.

Helical Pile Installation and Inspection Related Documents

Sample Inspection Form (Installation Record.xls)

Hand Signals for Helical Pile Installation (Figure 2-11.pdf)

General Installation Procedures (Figure 2-3.pdf)

General Geotechnical Engineering and Pile Load Testing Information

Index Soil and Rock Properties (soil classification and strength4.xls)

Load Test Data Base (Appendix D)

DRAFT DFI Helical Presentation

Please note these files shall be considered copyright material. Provided proper credit is given to the author and publisher by reference to the book, individuals and companies hereby are permitted to reprint figures and tables contained in these files as long as said reprinting is for technial/professional papers, in-house training, or external company literature intended for advancing the state of the art increasing public awareness about helical piles. Other commercial uses are hereby prohibited. Contact the author if you have any questions about this policy (

If you are an author, artist, designer, or illistrator and have a particular paper, design, specification, or article that you are interested in sharing with others, feel free to e-mail this document to the author and it will be considered for posting it in this section. Please be sure this information is not copyright protected.

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