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Planning and Building Ager <br />LABORATORY TESTING PROCEDURES <br />Approved <br />FOR PERMIT ISSUANC <br />Moisture/Density <ASTM D2216> <br />The field density of the soils was determined by split barrel sampling. The sampling. The ampler was <br />equipped with 2'/z" brass liner rings and was driven manually. Master ID: <br />Date: <br />Settlement <ASTM D2435> <br />The settlement characteristics of the in -situ soil are determined by performing standard consolidation <br />tests on undisturbed specimens. The samples are tested in the original sample liner ring and the <br />increment loads for consolidation are applied for periods of 24 hrs by means of a single counterbalance lever <br />system. The pressure settlement curves are shown on the attached plates. <br />Shear Strength <ASTM D3080> <br />The shear strength of the soil is determined by performing direct shear tests and unconfined compression <br />tests. <br />The direct shear tests are performed on both undisturbed specimens and on samples remolded to 90% of <br />ASTM: D-1557-(Current Version) Method A. The samples are either tested at in -situ moisture or are saturated <br />to simulate the worst field condition and sheared at a constant rate of 0.1 inches per minute. The relationship <br />between normal stress is shown on the attached Direct Shear Summary. <br />The unconfined shear strength of selected undisturbed specimens and is determined in accordance with <br />ASTM: D2166. These tests are performed at the existing moisture content. The results of these tests are <br />shown on the Boring Logs. <br />Maximum Density/Optimum Moisture <ASTM D1557> <br />The maximum density relationship to optimum moisture was determined in accordance with ASTM D1557- <br />(Current Version) method A (5 layer method). <br />Expansive 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 12.63 Ibs is <br />applied to the sample and allowed to consolidate for 10 minutes. The sample is then saturated with distilled <br />water and allowed to swell for a minimum of 24 hrs. <br />Soluble Sulfate Content >ACI 318> <ASTMC1580> <br />The concentration of soluble sulfates in the soils is determined by measuring the optical density of a barium <br />sulfate precipitate. The precipitate results from a reaction of barium chloride with water extractions from the soil <br />samples. The measured optical density is correlated with a calibration curve obtained from readings on <br />precipitates of known sulfate concentrations. <br />Particle Size Analysis of Soils <ASTM D422> <br />This method covers the quantitative determination of the distribution of particle sizes in soils. The distribution of <br />particle sizes retained on the No. 200 sieve is determined by sieving while the distribution by a sedimentation <br />process, using a hydrometer to secure the necessary data. <br />1225 N West St Santa Ana Ca 92703 <br />Laboratory Testing Procedure `B' <br />PRIORITY ENGINEERING GROUP <br />