The evolution and spread of techniques for the construction of foundation piles requires at the same time a qualitative and quantitative improvement of the verification of the behaviour of these works under operating conditions and the serviceability limit state.
Following in-depth experience, specifically at the Case Western Reserve University, regarding dynamic methods for the non-destructive testing of foundations, this dynamic survey method, known as the "Case Method", began to be used alongside the traditional static load test.
The method, defined as high-deformation dynamic test which, in compliance with American ASTM standards, replaces the use of static test in the United States is now also applicable in Italy based on the Consolidated Act published in 2008.
The CAPWAP interpretation software, which forms the ground-pile model, is standardised through the Eurocode 7.
The strengths of this method are, in addition to the speed and cost-effectiveness of execution, the possibility of knowing the trend of the resistances along the shaft of the pile and the bearing capacity at the serviceability limit state.
Below you will find the technical data sheets of the hammers used for the CASE test, depending on the test load to be reached: