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Abstract:With approximately 450 snow plow trucks, the Maine Department of Transportation (MaineDOT) uses in
excess of 10,000 linear feet of plow cutting edges each winter season. Using the 2008-2009 cost per linear
foot of $48.32, the Departments total cost for cutting edges for the winter of 2008-2009 is estimated to
exceed $500,000. Considering this significant annual expenditure, MaineDOT is continually looking for
alternatives to its existing carbide-insert cutting edges.
During the winter of 2007-2008, MaineDOT’s maintenance crew in Baileyville found themselves running
low on carbide cutting edges. As an alternative, the crew installed carbide-insert underbody scraper
blades. The underbody blade is approximately 1/8 inch thicker than the conventional plow blade (see
Photo 1). The crew quickly noticed the underbody blades appeared to last longer than their conventional
blades. These promising preliminary results made a more formal evaluation warranted for the winter of
2008-2009.
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