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Use of Rigid Insulation Below Grade for Roadways and Parking Areas

by Lauren A. Larsen, LHB Engineers & Architects, Duluth, United States,
Thomas G. Krzewinski, LHB Engineers & Architects, Duluth, United States,
Jay B. Bergman, LHB Engineers & Architects, Duluth, United States,



Document Type: Proceeding Paper

Part of: Cold Regions Engineering

Abstract:

Minnesota Power's Herbert Service Center is located 3 miles north of downtown Duluth, Minnesota. The facility, constructed in 1967, consists of primary buildings, cold storage buildings, garages, security fences, roadways, parking areas and yards. To date, these buildings have performed well. Less consideration of frost action was given to the pavements and remaining structures. Since construction, the paved areas and cold storage facilities have experienced differential frost heave and loss of support during spring thaw, both problems requiring excessive amounts of maintenance. In addition, the security fence posts have uplifted as much as 18 inches. This case history summarizes the pavement evaluation and designs considered to minimize the future maintenance required for reconstruction. An insulated pavement section was selected and Phase One reconstruction was completed during the dsummer of 1989. Phase Two is being completed in 1990.

Subject Headings: Parking facilities | Storage facilities | Pavement design | Highways and roads | Building insulation | Pavements | Frost | Minnesota | United States

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