The folks at Pile Dynamics, Inc. (PDI) produce a monthly newsletter that is always full of great information. This month, they celebrate their 100th edition, you can view it and all past editions at Pile.com. In this issue, Frank Rausche and Garland Likins, the PDI founders, reflect on 50 years of dynamic pile testing…essentially the 50th anniversary of the Pile Driving Analyzer (PDA). It’s a fascinating read! Congratulations Frank and Garland for your amazing legacy with PDA and all of the amazing products PDI has produced over the years, and I’m looking forward to reading the next 100 newsletters!
[Editor] The pile driving analyzer or PDA is used to measure the response of piles during driving. It was originally developed to analyze pile drivability, but is sometimes used as a substitute for pile static load tests to determine . Mr. Scott A. Barnhill, P.E., Executive Vice President of consulting firm GeoEnvironmental Resources, Inc. located in Virginia Beach, Virginia has seen PDA being used and misused over his 33-year career. In this article, Mr. Barnhill describes pitfalls in relying solely on the PDA for pile capacities, and also describes what PDA is good at and how it can be used successfully. [/Editor]
The FHWA recently released ‘GEC 12 – Design and Construction of Driven Pile Foundations’ (FHWA-NHI-16-009 and FHWA-NHI-16-010). A companion publication ‘Design and Construction of Driven Pile Foundations – Comprehensive Design Examples’ (FHWA-NHI-16-064) is also available. […]
Drilled shaft foundations as well as retaining walls such as tangent and secant pile walls typically have a verticality requirement as part of the specifications. These requirements ensure that the moments and stresses in the […]