For more than 20 years, the Pile Dynamic instrument, Pile Integrity Tester (PIT), has offered an ideal means of ensuring that piles and/or shafts are free of cracks and voids before construction of the superstructure. PIT may be used on most deep foundation systems, including concrete and wood foundations, as well as on piles supporting bridges or towers, also assessing their length. It performs wave equation-based non-destructive foundation investigations known as Low Strain Impact Integrity Tests or Low Strain Dynamic Tests.
The American Society for Testing and Materials has issued a new standard, ASTM D7949 – 14, “Standard Test Methods for Thermal Integrity Profiling of Concrete Deep Foundations”. This Standard provides “minimum requirements for thermal profiling of concrete deep foundation elements” and may now be purchased from ASTM at www.astm.org/Standards/D7949.htm?A.
Pile Dynamics has recently announced the release of a new model of Pile Driving Analyzer® (PDA) System, the PDA-8G, billing it as the culmination of a complete redesign effort of the most widely employed system for Dynamic Load Tests of any type of deep foundation. Like previous PDAs, this 8th generation model performs the test normalized by the American Society of Testing and Materials standard ASTM D4945. The test, which for many decades has been accepted as an alternative for static load tests in more than 100 countries around the world, takes place either during pile driving or when a substantial mass impacts a non-driven pile. At each impact the Pile Driving Analyzer takes data obtained by sensors attached to the pile and calculates bearing capacity and other quantities.