Agenda Packets - 1993/10/25 - Laserfiche WebLink

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Ms. Samantha Orduno 2 August 13 , 1993 A. GEOTECHNICAL EXPLORATION Field Exploration We recommend that two borings be drilled at the club house/pro shop, both to a depth of 20 feet since the building may have a full basement. We recommend that two borings be drilled to a depth of 15 feet at the maintenance building. In the paved parking areas and other areas of the site, we recommend that five additional borings be drilled to depths of 8 to 10 feet. The total estimated drilling footage is 120 lineal feet. We will stake the borings in the field by measuring from available site features. Our crew will shoot surface elevations at the borings referenced to a convenient benchmark on or near site. Before we drill, we will contact Gopher State One Call to locate underground utilities, as required by state law. We plan to drill the borings with a CME 55 or 750 rig. Our crew will keep logs noting the methods of drilling and sampling, along with Standard Penetration Values, preliminary soil classifications, and observed groundwater levels. Representative portions of recovered soil samples will be preliminarily classified in the field, sealed in jars to reduce moisture loss, and returned to our laboratory for examination and classification by a Geotechnical Engineer. After we complete the drilling, we will backfill the boreholes with cuttings. Geotechnical Report In our laboratory, a Geotechnical Engineer will examine and classify the recovered soil samples, and prepare the boring logs and the report. In the report, we will describe the soil and groundwater conditions which we encounter and present recommendations for feasible methods of foundation and earthwork design and construction. For the buildings, we will present our recommendations for foundation support. Assuming that conventional spread footing foundations could be used, we will present allowable design bearing pressures and estimated settlements. If a basement is to be included with the club house, we will present recommendations for backfilling around the outside of the basement, with estimated lateral earth pressures and recommendations for dampproofing the outside walls. For the maintenance building, we will present an estimated modulus of subgrade reaction, which the Structural Engineer can use in designing the building floor slab. We will present recommendations for preparation of the parking area subgrade. We will evaluate whether existing bituminous materials on site can be pulverized and used as part of the subgrade for the pavement. We will give an estimated stabilometer value (R-value) , which can be used in designing the pavement thickness.