60-62 W Civic Center Plaza - Soils Report

Home Browse Search

Job No: 01-3058-002-01-06 Xy Log No: 2Tiâ‚¬*272713'1 Page C-2 "fâ‚¬,61 9 LABORATORY TESTING PROCEDURES 1 :, C-1. Classification M> 1 ' '6'i:rÂ»A<iÂ·ti. A Â¤ttÂ·Â·*39 a. Soils were classified visually,'.f'generally according to 1 4403*the Unified Soil Classification* System. Moisture content --1#24:.t#e and dry density determinations were made,4Â·: for i*;if:i:ti:f Mr.representative, undisturbed samples. .311*Â· 9 V : - 3.-t:i ;':j..7,1: b. Results of moisture-density diterminations, together with classifications, are shown onithe Logs of Borings, in Appendix B. ; .'7Â£ ... Uswk. C-2. Optimum Moisture Content/Maximum Drv Densitv The maximum dry density/optimum moisture content relationship -.vi: 4< Â» - was determined for representative samples of the on-site L The laboratory standard used was ASTM: D 1557. The results are presented in Table C-1. C-3. Expansion Index An Expansion Index test was performed on a representative remolded sample of the on-site materials in accordance with ASTM 4829.The test results are shown in Table C-2. C-4. Sulfate Content A water soluble sulfate content test was performed on a representative sample of the on-site soils.The laboratory standard used was California 417.The test result is presented in Table C-3. C-5. R-Value An R-Value test was performed on a representative sample of the near-surface on-site soils in accordance with California 301.The test result is presented in Table C-4. C-6. Direct Shear a.Direct shear tests were performed on a representative, relatively undisturbed sample of the on-site materials. To simulate possible adverse field conditions, the sample was saturated prior to shearing. A saturating device was used which permitted the sample to absorb moisture while preventing volume change. The test results are presented in Table C-5. -............. t Â·Â· j5'BiB UJU, ..4....4.-1.1 4