The National Asphalt Pavement Association is the only trade association that exclusively represents the interests of the Hot Mix Asphalt producer and paving contractor on the national level with Congress, government agencies, and other national trade and business organizations. NAPA supports an active research program designed to answer questions about environmental issues and to improve the quality of HMA pavements and paving techniques used in the construction of roads, streets, highways, parking lots, airports, and environmental and recreational facilities. The Association provides technical, educational, and marketing materials and information to its members, and supplies technical information to users and specifiers of paving materials. The Association, which counts more than 1,100 companies as its members, was founded in 1955.
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geotechref
A Wiki-based collection of geotechnical engineering information, tutorials, resources, and downloads. Visit geotechref
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Moretrench
Moretrench: dewatering and groundwater control, ground freezing, underpinning, deep foundations, grouting systems, earth retention and excavation support, and environmental remediation. Through offices in New Jersey, Florida, New York, Massachusetts, Pennsylvania, Delaware, and Washington D.C. Visit […]
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Geo Photo Album
A very nice collection of photos of geotechnical failures, geotechnical construction projects and methods. Put together by Ross W. Boulanger at UC Davis and James Michael Duncan from Virginia Tech, Blacksburg. Visit Geo Photo Album
