ASTM D8381/D8381M-21 PDF Download

The ASTM D8381/D8381M-21 standard provides guidelines for measuring the depth of vertical deep foundation elements such as micropiles, driven piles, caissons, and sheet pile walls. This standard is applicable when the top of the foundation element cannot be exposed for testing or when other testing methods are not suitable.

The standard includes two test methods: Method "A" involves using a vertical access tube adjacent to the deep foundation, while Method "B" utilizes a seismic cone inserted into the ground next to the foundation. These methods are provided as options and can be chosen based on the specific requirements of the test program.

The standard also emphasizes that any optional apparatus and methods may yield different test results or additional information and should be approved by the engineer responsible for the test. Additionally, the document provides guidelines for significant digits and rounding in accordance with Practice D6026 and acknowledges that data analysis may require consideration of material variation, special-purpose studies, and user objectives.

It is important to note that this standard does not recommend a specific course of action and should be used in conjunction with professional judgment. The ASTM D8381/D8381M-21 standard does not replace the standard of care in professional services and should consider the unique aspects of each project. The designation "Standard" in the title indicates that the document has been approved through the ASTM consensus process.