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LABORATORY PROCEDURES <br />Water Content(Wc) <br />The water content of a soil is the ratio of the weight of water in a given <br />soil mass to the weight of the dry soil. Water content is generally <br />expressed as a percentage. <br />Hand Penetrometer (Qp) <br />In the hand penetrometer test, the unconfined compressive strength of a <br />soil is determined, to a maximum value of 7 tons per square foot (tsf), by <br />measuring the resistance of the soil sample to penetration by a smaI.l, <br />spring -calibrated c under. The hand penetrometer test has been carefully <br />correlated with unco- ined compressive strength tests, and thereby provides <br />a useful and a relatively simple testing procedure in which soil strength <br />can be quickly and easily estimated. <br />Unconfined Compression Tests (Qu) <br />In the unconfined compressive strength test, a soil is loaded axially until <br />failure or until 20% strain has been reached, whichever occurs first. This <br />test is performed can undisturbed samples obtained from the Shelby tube <br />sampling procedure. <br />Classification Samples <br />In conjunction with the sample testing program, all soil samples were <br />examined in our laboratory and classified on the basis of their texture and <br />plasticity in accordance with the Unified Soil Classification System <br />(USCS). The soil descriptions on the boring, logs are in conformance with <br />this system and the estimated group symbols according to this system are <br />included in parentheses following the soil descriptions on the boring logs. <br />Included on a separate sheet is a brief explanation of this system of soil <br />classification. <br />STS Consultants, Ltd. <br />