More than 27,000 trucks were weighed in seven states using a Bridge Weigh-in-Motion system. The system used instrumented highway bridge girders to act as equivalent static scales to obtain truck gross and axle weights, dimensions and speed. Improvements were made in the system software and hardware such that weighing can now be performed automatically with no traffic observer necessary. The accuracy of the in-motion weighing has been established by repeatability tests. Three systems have been designed, developed, tested and delivered to FHWA for operation by two crew members at the technician level with part time supervision by an engineer. Weighing rates in excess of 200 trucks per hour have been realized.
Loading Spectrum Experienced by Bridge Structures in the United States
1985
169 pages
Report
Keine Angabe
Englisch
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