Browsing by Subject "Summary"

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    OFR22-03, Geologic Mapping Forum 2018 summary
    (Minnesota Geological Survey, 2022) Thorleifson, L Harvey
    At the Geologic Mapping Forum in Minneapolis from March 27th to 29th, 2018, ~100 geological map authors, program managers and allied professionals from geological surveys and allied agencies met to discuss the status and future of geologic mapping in the USA. The meeting was hosted by Minnesota Geological Survey on the University of Minnesota campus. The meeting was held near the Mississippi River, at the Humphrey School of Public Affairs on the West Bank campus, in the Humphrey School Conference Center at 301 19th Avenue South, Minneapolis, MN 55455. Unless they had been invited to speak in a plenary, all participants were urged to present a 15-minute talk in a concurrent session or a poster. Plenary, concurrent session, and poster presenters were asked to submit a 1 to 2-page abstract. The meeting commenced with registration and a reception at the hotel with light food and drinks on Monday from 5 to 7 PM, followed by conference sessions from 8:30 AM Tuesday until 4:30 PM Thursday.
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    Relationship Between Timber Bridge Characteristics and Asphalt Pavement Wear Surface Performance: Summary
    (Minnesota Department of Transportation, 1997-06) Lange, Douglas A.; Larson, Timothy D.; Seavey, Robert
    This summary offers an overview of on a research study that assessed the magnitude of premature asphalt deterioration on timber bridges; identified the primary mechanisms responsible for wear surface deterioration; and suggested methods for improving asphalt pavement performance on timber bridges. The study revealed that approximately 50 percent of counties experience some problems with premature reduced serviceability of the asphalt pavement wear surfaces that cover their timber bridges. The summary looks at possible pavement failure mechanisms and presents the following proposed solutions for controlling timber bridge asphalt pavement cracking: asphalt pavement saw & seal, asphalt pavement fabric or material underlay, removal of extruded oil-type preservative before surfacing, conditioning of bridge timbers to the expected equilibrium moisture content before bridge installation, and tightening of timber decks through maintenance practices.