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Moisture/Density <ASTM D2216> <br />The filed density of the soils was detenniried by splittarrel sampling. The sampler was <br />Equipped trvitrh 2 %" brass rings and was driven manually. <br />Settlement <ASTM DE3080> <br />The settlement caracteristics of the in-situ soil we dotennineid by perkwming standard <br />Consolidation tests on undisturbed specimens The samples we tested in the original <br />Sampler liner ring and the increment loads for consolidation we applied for periods <br />Of 24 hrs by means of a single counterbalance lever systent. The pressure settlement <br />Curves are ShOWII on the attached plates. <br />Shear Strength <ASTM 03080> <br />The shear strength of the soil is determined by performing direct shear tests and <br />Unconfined compression tests. <br />The direct shear tests are performed on both undisturbed specimens and on samples <br />Remolded to 90% of ASTM: D-1557-(Current Version) Method A. The samples are either <br />Tested at in-situ moisture or are saturated to simulate the troorst field condition and <br />Sheared at a constant rate of 0.1 inches per minute. The relationship between normal <br />Stress is shown on the attached Direct Shear Summary. <br />The unconfined shear strength of selected undisturbed specimens and is determined in <br />accordance with ASTM:DE-2166. These tests we perfonned at the existing moisture <br />Content. The results of the tests are shown on the Boring Logs. <br />Maximum Density/Optimum Moisture<ASPA D1557> <br />The maximum density relationship to optimum moisture was determined in accordance <br />With ASTM:D1557-(Current Version) Method A(5 layer method). <br />Exparisivi Index <ASTM D4829> <br />The expansive potential was determined in accordance with the "Expansion Index Test". <br />Samples are remolded at 49% to 51% saturation using a specific gravity of 2.7. A total load of <br />12.63 lbs is applied to the sample and allowed to consolidate for 10 mine. The sample is then <br />saturated with distilled water and allowed to swell for a minimum of 24hrs. <br />Soluble Sulfate Content <ACI 318> <ASTNIC 1580> <br />The concentration of soluble sulfates in the soils is determined by meastring the optical <br />density of a barium sulfate precipitate. The precipitate results from a reaction of <br />Barium chkwide with water extractions from the soil samples. The measured optical density is <br />correlated with a calibration curve obtained from readings on precipitates of known sulfate <br />concentrations. <br />Particle Size Analysis of Soils <ASTM D 422> <br />The method covers the quantitative determination of the distribution of particle sizes in soils. <br />The distribution of particle sizes retained on the No. 200 sieve-is determined by sieving while <br />the distribution by a sedimentation process, using a hydrometer to secure the necessary data. <br />524 S Shawnee Dr Santa Ana Ca 92704 Laboratory Testing Procedures 13 <br />524 S Shawnee Dr & <br />Unit# 22/7/2025