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Title: Regionalized feasibility study of cold weather earthwork
Authors: Purdue Research Foundation.
Roberts, William Stephan.
Keywords: Cold weather operations
Frozen ground
Frozen soils
Soil structure
Inefficiency curves
Physiographic charts
Soil texture maps
Economic feasibility
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 76-2.
Description: Special Report
Abstract: A regional approach is used to delineate areas in Canada, Alaska, and the conterminous United States, in which selected earthwork operations should receive careful consideration for winter execution. Soil texture and soil "form" or physical site environment are deemed important physical factors in the economic feasibility of cold weather earthwork. A compatible modern physiographic map of Canada, Alaska, and the conterminous United States compiled for this study is presented. The physiographic section is the basic areal unit used in the evaluation of winter earthwork feasibility. A generalized soil texture map for Canada, Alaska, and the conterminous United States is developed from geologic and pedologic information. Summary maps showing a really significant soil forms related feasible earthwork operations are presented. A general discussion of the importance of the soil form in the economic feasibility of winter earthwork is included. A summary matrix is presented which shows, with respect to physiographic sections, the salient information and conclusions developed by this study. At least 94% of physiographic sections have two or more winter earthwork operations that are deemed feasible. Only 5 of 213 sections considered do not have any earthwork operations that appear feasibly implemented in the winter season. Inefficiency curves for manual labor, excavation, and hauling operations, as a function of season and geographic location, are shown. These curves are based on efficiency data published in a Swedish survey, and are calculated from the meteorological factors of temperature, lighting, and precipitation. Such curves can serve as a qualitative guide for those involved in scheduling earthwork in geographic areas where there is little or no previous experience.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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