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Title: Better load-weight distribution is needed for tandem-axle logging trucks
Author: Baumgras, John E.;
Source: Res. Pap. NE-342. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 9p.
Publication Series: Research Paper (RP)
Description: To determine the GVW and axle weights of tandem-axle logging trucks hauling into two West Virginia sawmills, 543 truckloads of hardwood sawlogs were weighed. The results showed that less than 2 percent of the truckloads exceeded the 48,000 pound GVW limit. While 58 percent of the truckloads exceeded the 32,000 pound tandem-axle weight limit, the front-axle weights never exceeded the 18,000-pound single-axle limit and seldom exceeded 10,000 pounds. Because the trucks sampled carried an average of 93 percent of the load weight on the rear axles, they could not haul maximum payloads without exceeding the tandem-axle weight limit on the rear axles. The wheelbase dimension of the trucks and the location of the body on the truck determined the distribution of load weight. From these results, a truck design guide was developed in the form of an easy-to-use nomogram. The configuration of tandem-axle logging trucks needs to be changed, and loggers should select a truck design that will provide the correct distribution of load weight and have the capacity to handle the front- and rear-axle loads needed for maximum payloads.
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Baumgras, John E. 1976. Better load-weight distribution is needed for tandem-axle logging trucks. Res. Pap. NE-342. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 9p.
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