ASTM D6286/D6286M-20 PDF Download

ASTM D6286/D6286M-20 is a standard guide that provides descriptions of various methods for site characterization, along with their advantages and disadvantages. The purpose of this guide is to assist in selecting the appropriate drilling and direct push methods for geotechnical and environmental subsurface site characterization. The standard covers a wide range of drilling methods, such as fluid rotary drilling, hollow-stem auger drilling, sonic drilling, and direct push methods.

The guide recognizes that the selection of drilling methods depends on specific site characteristics and project requirements. It emphasizes that drilling methods should be chosen based on their suitability for sampling, testing, and installation of wells or other instrumentation. The standard distinguishes between geotechnical and environmental applications, as the requirements and considerations may differ.

The standard also acknowledges the existence of other guides and resources addressing drilling methods for geotechnical investigations. It lists Eurocode, U.S. Federal Highway Administration, U.S. Army Corps of Engineers, and U.S. Bureau of Reclamation as examples. Additionally, it references a Handbook on Environmental Site Characterization and Ground-Water Monitoring and major drilling guides from the National Drilling Association and the Australia Drilling Industry Training Committee.

Furthermore, the standard provides information on the predominant or typical drilling and push boring methods used for geotechnical and environmental applications. It highlights that different methods are favored depending on the nature of the subsurface materials, the presence of groundwater, and the need to minimize waste generation in environmental investigations.