When writing soil descriptions in the bore log, it is essential to record the information below according to the Unified Soil Classification System (USCS):Īlso, other soil descriptions might be required, so it is better to cross-reference the standards in the project location. Some samples will be stored, and the other portion will be sent to laboratories for further analysis. Usually, soil samples are taken through tube samplers attached to the drill. Soil description is an assessment based on the visual and tactile condition of the soil samples. Some countries might also require the inspector to include inferences about the stratum or layer the soil is from. This information refers to the soil’s description, name, and classification. This will be used to compare with the previous records of the natural groundwater table of the location. This information will be essential when studying the samples in the laboratory.Īnother necessary information that should be included in the bore log is the depth at which groundwater is encountered during the drilling process. This information refers to any information regarding the drilling process such as drilling methods, types of drill bits, sample types, and intervals, run lengths, core loss and recovery, and rock quality designation percentages. So, make sure to carefully cross-inspect the standard guidelines of the country where the site investigation will take place to prevent any issues upon submission of the documents. Take note that the required project and location information will vary depending on the country. Project Number/Code (Standard coding will vary from country to country).
The borehole log should include the details below: Geological Survey and Australia’s Geotechnical Borehole Logging Guideline.īefore starting the drilling and investigation process, inspectors would need to record the project and location information. The information below is referenced according to the U.S. What is Technical Information in a Borehole Log?Īlthough standard forms may vary from country to country, below are four technical information that is common among them.