Engineering - PDI



Test Methods For Driven Piles

A variety of high- and low-strain load test procedures exist to determine the suitability of pile-soil systems for proposed pile design loads. The following article provides deep foundation contractors with a load test overview that discusses implementation and the differing methods commonly utilized. Conducting Load Tests All forms of load […]


An Introduction to Soil Mechanics

By applying the principles of physics, mechanics, hydraulics, strength of materials, and structural engineering – an approach dubbed soil mechanics – geotechnical engineers have gained an understanding of various soil behaviors for a century. Because the analysis of soil is more complex than that of steel or concrete, which are […]

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Saving Money With Foundations Testing

View complete article here. In the previous issue I wrote an article on sustainability which concluded that, when it comes to foundations, sustainability is really a win-win situation. Whether sustainability is achieved by reusing an existing foundation, using fly ash instead of cement in the concrete, or applying additional testing […]


The Importance of Geotechnical Engineering

A Foundational Profession Soil mechanic authorities, subsurface condition experts, foundation designers. These titles all reference geotechnical engineers, professionals that ensure the long-term stability of various structures and earthworks. Tasked with designing foundations, slopes and retaining walls, geotechnical professionals rely heavily on self-conducted site investigations, rather than code-based design. This reliance […]


Dr. Bengt Fellenius: Philospher, Teacher, Mentor

View complete article here. by Sarah Milstead Bengt Fellenius has changed little since our last meeting. Age seems to elude him as he remains boyishly- handsome and still carries a discernible Swedish ac- cent. He was wearing sneakers which seemed to ease his great stride as he energetically led the way […]


Sinkholes: Natural Phenomena And Headache

By Larry Madrid, PE, D.GE, F.ASCE, president of Madrid Engineering Group, Inc., and Brian Murphy, PG, Senior Geologist First off, what is a sinkhole and how is that different from sinkhole activity?   A sinkhole is a is a depression at the land surface that is the result of soils settling, […]