More From Don Warrington

Improved Methods for Forward and Inverse Solution of the Wave Equation for Piles By Don Warrington
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This dissertation discusses the development of an improved method for the static and dynamic analysis of driven piles for both forward and inverse solutions. The finite element routine developed was... More > a three dimensional model of the hammer, pile and soil system. Soil properties were aggregated to simplify data entry and analysis. The three-dimensional model allowed for more accurate modeling of the various parts of the system and phenomena. Soil layering was flexible and could either follow the grid generation or be manually input. The forward method could either model the hammer explicitly or use a given force-time history, analyzing the pile response. The inverse method used an optimization technique to determine the aggregated soil properties of a given layering scheme. In both cases the static axial capacity of the pile was estimated using the same finite element model as the dynamic method and incrementally loaded. The results were then analyzed using accepted load test interpretation criteria.< Less
Vulcanhammer.info Guide to Pile Driving Equipment By Don Warrington
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Driven piles are the oldest known form of deep foundations, and remain the most reliable today. Vulcan Iron Works produced reliable, rugged pile hammers, some of which remain in service after a... More > century in the field. Now the hammers and the piles are put together in a complete reference that discusses all of the various types of pile driving equipment, including air/steam, diesel, hydraulic, vibratory and others. Extensive material on accessories and leaders is also included. A description of the drivability analysis process has a worked example to make the concepts more easily understood. In addition to this, extensive resources from the Vulcan and Raymond library are included, including the User’s Guide to Safe Operation, an expanded Data Manual, sections from the Raymond Superintendent’s Handbook, and field service manuals for Vulcan onshore and offshore air/steam hammers, diesel hammers, vibratory hammers and the DGH series hammers.< Less
Vulcanhammer.info Guide to Pile Driving Equipment II By Don Warrington
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In the tradition of the original, successful vulcanhammer.info Guide to Pile Driving Equipment, this volume contains more information on pile driving and driven piles in general and Vulcan pile... More > hammers in particular. Included is 1) an overview of pile driving and driven piles, 2) Bulletin 165, Field Service Manual, Vulcan Offshore Hammers, 3) Bulletin 168G, Field Service Manual for Vulcan Onshore Air/Steam Hammers, 4) Bulletin 171A, Field Service Manual, Vulcan Pile Extractors, and 5) Vulcan Offshore Specification Sheets.< Less
A Month of Sundays By Don Warrington
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These devotionals are designed to start the escape from the routine and set our course with God. Some are life lessons. Others are taken from the Bible and the world around it. But they are all... More > designed to provoke thought, to provoke prayer, and ultimately to provoke action to further God’s kingdom on this earth. There are thirty-one of these. My mother used to describe something that took a long time as taking a “month of Sundays.” Hopefully each of these will make reading them a little of the “Lord’s day” each day, preparing you for the long journey to eternal life.< Less

The Ten Weeks The Ten Weeks By Don Warrington Paperback:
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The CashPT® Blueprint: How I Built and Scaled a Successful Cash-Based Physical Therapy Practice Even When I Was Told It Was Unethical, a Bad Idea and That No One Would Pay More Than Their Copay for Physical Therapy! The CashPT®... By Aaron LeBauer
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