ASTM D3966/D3966M-22 PDF Download

The ASTM D3966/D3966M-22 standard is a set of test methods for measuring the lateral deflection of deep foundation elements or groups of elements when subjected to static lateral loading. These methods are applicable to various types of deep foundations, including drilled shafts, micropiles, cast-in-place piles, driven piles, and more. The standard provides minimum requirements for testing and includes optional apparatus and procedures that may produce different test results when approved by the foundation engineer.

The scope of the standard emphasizes that the test results may not represent the long-term performance of the entire deep foundation system. It also highlights the importance of the foundation engineer's involvement in approving deviations and designing or specifying the test procedures. The test results obtained from this standard are to be interpreted by the foundation engineer to predict the actual performance and adequacy of the constructed foundation.

Furthermore, the standard mentions that an engineer qualified to perform such work should design and approve the loading apparatus, loaded members, and support frames. The use of the inch-pound gravitational system is specified for dealing with inch-pound units. It is also stated that observed and calculated values should conform to the guidelines for significant digits and rounding established in Practice D6026.