Laserfiche WebLink
3.0 RESULTS <br /> 3.1 Soil Conditions <br /> The soil borings encountered about 4 feet of existing fill soils. The fill consisted of about 1 to <br /> 2 feet of silty sand topsoil fill over 2 to 3 feet of sandy silt that was dark brown to black in color <br /> and contained traces of roots and fibers. <br /> Underneath the fill sandy lean clay glacial till soils were encountered to the boring termination <br /> depths. The N-Values within the native clay till ranged from 6 to 27 bpf. These values indicate <br /> these soils had a medium to very stiff consistency. <br /> 3.2 Groundwater <br /> Groundwater was not encountered in either soil boring while drilling and sampling or after <br /> removing the augers from the boreholes to cave-in depth of 12 feet. However, given the <br /> cohesive nature of the soil encountered, it is likely that insufficient time was available for <br /> groundwater to seep into the boring(s) and rise to its hydrostatic level. Groundwater <br /> measurements were made as noted and shown on the boring logs. Groundwater monitoring <br /> wells or piezometers would be required to more accurately determine water levels. Seasonal <br /> and annual fluctuations in the groundwater levels should be expected. <br /> The ordinary high water level of Lake Minnetonka is 929.4 feet. <br /> 3.3 OSHA Soil Classification <br /> The soils encountered in the borings at the anticipated excavation depths consisted mainly of <br /> silty sand topsoil and silty fill over native sandy lean clay soils which correspond to the ASTM <br /> Classifications of SM/ML and CL.The SM/ML fill soils identified in the borings will generally <br /> be Type C and the CL clay till soils identified in the borings will be generally Type A under <br /> Department of Labor Occupational Safety and Health Administration(OSHA)guidelines. <br /> 4.0 DISCUSSION AND RECOMMENDATIONS <br /> 4.1 Proposed Construction <br /> It is proposed to construct a new garage building which will be slab-on-grade and constructed <br /> with wood framing.. We anticipate the main floor will be constructed slightly above existing <br /> site grades at or near about elevation 965 feet MSL. We assume construction will consist of <br /> cast-in-place concrete foundation walls supported on concrete spread footings. The above <br /> grade construction will consist of wood framing,a pitched roof and asphalt shingles. <br /> Based on the assumed construction we estimate wall loadings will range from about 1 to 2 <br /> kips (1,000 to 2,000 pounds) per lineal foot and column loads,if any,will be less than 50 kips <br /> (50,000 pounds). <br /> 3 <br />