Opening of Quotes - Laurel Woods Drainage Improvements Proj No. 121-007 - Selge Construction Co., Inc.

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K:\Wbgm\Appendices for Geo. Rpts\Field Exploration Appendix\Lab\Lab Testing Proced+Grain-size_MC_Qp.doc_09/24/20 11:41 AM LABORATORY TESTING PROCEDURES Representative soil samples were selected and tested in our laboratory in order to check field classifications and to evaluate pertinent engineering properties. The laboratory testing program included visual classification of all samples and hand penetrometer tests on all cohesive samples. In the hand penetrometer test, the unconfined compressive strength of a cohesive soil is estimated by measuring the resistance of the soil sample to penetration by a small spring calibrated cylinder. Any additional tests are described below or on the following sheet(s). Appropriate data obtained from laboratory tests are also included on the respective boring logs. A geotechnical engineer classified each soil sample on the basis of texture and plasticity in accordance with the Unified Soil Classification System (ASTM D 2487 and/or ASTM D 2488). The group symbol for each soil type is indicated in parentheses following the soil descriptions on the boring logs. A brief explanation of the Unified System is included with this report. Data obtained from the field logs and appropriate laboratory tests have been shown on the boring logs. The procedures used in preparing the final boring logs are described on the sheet entitled “Field Exploration Procedures.” It should be noted that the geotechnical engineer grouped the various soil types into the major zones noted on the boring logs. The stratification lines designating the interfaces between earthen materials shown on the boring logs and profiles are approximate; in-situ, the transitions may be gradual. All samples will be retained in our Granger, Indiana laboratory for a period of thirty (30) days after which they will be discarded unless other instructions as to their dispos al are received. Grain Size Tests Grain-size tests are performed to determine the soil classification and the grain-size distribution. The soil samples are prepared for testing according to ASTM D 421 (dry preparation) or ASTM D 2217 (wet preparation). The grain-size distribution of soils coarser than a No. 200 U.S. Standard sieve (0.074 mm opening) is determined by passing the samples through a standard set of nested sieves. Materials passing the No. 200 U.S. Standard sieve are either suspended in water and the grain-size distribution calculated in accordance with ASTM D 422, or are washed over the No. 200 sieve in accordance with ASTM D 1140.