2710 14TH ST BLDG A Geotech Report 2023-12-29

APPENDIX B LABORATORY TESTING ' Soil samples obtained from the test pits were visually classified in the field and/or in our laboratory using a system based on the Unified Soils Classification System (USCS) and ASTM classification methods. ASTM ' test method D 2488 was used to visually classify the soil samples, while ASTM D 2487 was used to classify the soils based on laboratory tests results. These classification procedures are incorporated in the exploration logs shown in Figures A-2 through A-18. ' Moisture Content Testing ' Moisture content tests were completed in general accordance with ASTM D 2216 for representative samples obtained from thetest pits. The results of these tests are presented on the test pit logs in Appendix A at the depths at which the samples were obtained. ' Percent Passing U.S. No. 200 Sieve Selected samples were "washed" through the U.S. No. 200 mesh sieve to determine the relative percentage ' of coarse- and fine-grained particles in the soil. The percent passing value represents the percentage by weight of the sample finer than the U.S. No. 200 sieve. These tests were conducted in general accordance with ASTM D 1140, and the results are shown on the test pit logs at the representative sample depths. ' Sieve Analyses Sieve analyses were performed on selected samples in general accordance with ASTM D 422. The wet sieve analysis method was used to estimate the percentage of soil greater than the U.S. No. 200 mesh sieve. The results of the sieve analyses were plotted, classified in general accordance with the USCS, and presented in Figure B-1. I GEOENGINEERS� October30.2019 PageB-1 File No. 21288-002-00