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Title: Spread footing foundations on snow
Authors: Reed, Sherwood C.
Keywords: Foundations
Snow foundations
Cold weather conditions
Foundation construction
Snow creep
Snow mechanics
Snow construction
Cold regions
Arctic regions
Polar regions
Camp Century, Greenland
Issue Date: Apr-1966
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 175.
Description: Technical Report
Abstract: A series of nine spread footing tests was installed on snow at Camp Century, Greenland, in 1961 and continuously observed through the 1963 summer. The influence of footing load, size and shape on settlement were investigated and the effects of the uncontrolled parameters (temperature and snow density) were recorded. The results indicate that settlement is dependent on 6 basic parameters: time, snow density, temperature, load intensity, footing size, and footing shape. Snow deformation beneath a footing occurs in a bulb-shaped zone whose lateral and vertical dimensions approach 1.5 times the footing width. In general, spread footings placed on snow in the density range 0.4 to 0.5 g/cm^3 can be expected to show a high initial settlement rate, occurring during the construction period in an actual installation. Rectangular spread footings will produce the least settlement if all other factors are equal, but care should be exercised in the design of large or very long shapes as differential settlement could induce severe stresses in any rigid structure. To minimize differential settlements all footings should be placed on snow having similar characteristics with a density approaching 0.5 g/cm^3 and all footings should be designed to have about the same size and load intensity.
Appears in Collections:CRREL Technical Report

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