1984-09-01 Soil Report - Laserfiche WebLink

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All perimeter footings in heated portions of the building must be a minimum of 3h feet below outside finished grade for frost protection purposes. Perimeter footings in unheated portions such as the outside garage walls should be at least 4 feet below outside grade. Continuous strip footings under bearing walls should be at least 18 inches wide, for practical reasons. To inhibit potential problems due to seasonal freeze -thaw cycles, all exterior items that are not structurally supported including sidewalks, garage aprons, patio slabs etc. should be structurally independent of the building, and unrestrained in their movement. The site should be graded to provide positive drainage of runoff away from the building in all directions. Driveway Pavement Organic soils and inadequate:y compacted fill remaining bolo driveway areas should be stripped and removed to a minimum 24-inch depth, and replaced with approved compacted fill. The base of the excavation should be compacted to a minimum of 95% Maximum Modified Proctor Dry Density, A.S.T.M. D-1557. Fill necessary to reach design pavement grade should be an approved inorganic soil, free of any foreign material or debris. It should be spread in 6 to 8-inch maximum loose lifts and should be compacted to achieve at least 95% Maximum Modified Proctor Dry Dens ty A.S.T.M. D-1557. Conventional flexible pavement design may be used above such a prepared subgrade. This pavement recommendation is based on economics and the relative risks involved. It is similar to those used successfully at sites with similar soil conditions. However, where buried organ c soils remain below the pavement, some subsidence may occur and future additional maintenance of the pavement should be anticipated In order to reduce the potential for pavement distress, the uncompa cted mixed fill and organic soils beneath the pavement section woul have to be entirely removed. SUBTERRANEAN ENGINEERING CORP. MINNEAPOLIS, 'AINNESOTA