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T <br /> ITCO ALLIED ENGINEERING CO. <br /> AN ALLIANCE OF INSTANT TESTING COMPANY AND ALLIED TEST DRILLING <br /> Jobsite and Laboratory Testing, Geotechnical Services, Commercial, Residential and Municipal <br /> 7125 West 126th Street, Suite#500- Savage, MN 55378 <br /> Telephone: (952) 890-7366 Fax: (952) 890-5883 <br /> October 20, 2017 <br /> DSM Excavating (Cell) 612-221-2260 <br /> 2916 Enterprise Avenue <br /> Hastings, Minnesota 55033 <br /> RE: 780 Tonkawa Road <br /> Minnetonka Beach, Hennepin County, Minnesota <br /> At the request of the excavating contractor, a site visit was made on October 20, 2017 at 12:27 P.M. to <br /> test engineered fill placed adjacent to the foundation walls of a sport court within a single-family <br /> residence under construction. It is our understanding that some areas of the backfill zones will be <br /> supporting footings for other structural elements of the building. Backfill soils consisted of a sandy lean <br /> clay, elevated in moisture in some areas. <br /> To evaluate the bearing capacity of the fill, a dynamic cone penetrometer test was conducted <br /> approximately 2' out from each wall of the sport court. The dynamic cone penetrometer(DCP), employs <br /> an eight kilogram (17.6 pound) hammer to drive a 20 millimeter diameter conical point into the soil, with <br /> the penetration recorded in millimeters per blow. From the DCP readings, a per blow, penetration <br /> average was recorded and an N-value derived. This N-value is an empirical relationship we have <br /> established to equate the dynamic cone data to the more familiar blows per foot(BPF) standard <br /> penetration soil boring test. <br /> Test#1 — Right Wall (Near Mid-point) <br /> DCP Depth Per Blow Avg. / N-Value Estimated Load <br /> 1015 MM (40.0") 46.9 MM/ N—6.2 2255 PSF <br /> Test#2— Front Wall (Near Mid-point) <br /> DCP Depth Per Blow Avg. / N-Value Estimated Load <br /> 1025 MM (40.4") 82.9 MM / N—3.75 1240 PSF <br />