Roadheader
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Roadheaders in North America

Drill and Blast and Tunnel Boring Machine are two common types of tunnel construction methods. But roadheaders have been around for many years, getting their start in the coal mining industry. So where do they […]

Suggested Guidelines for Investigating Land Subsidence and Earth Fissure Hazards in Arizona
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Suggested Guidelines for Investigating Land Subsidence and Earth Fissure Hazards in Arizona

From the AZGS Document Repository: These guidelines provide professionals evaluating site-specific conditions in areas known or suspected to be subsiding with a standardized minimum level of investigation for land-subsidence and earth-fissure hazards. The guidelines do […]

Geofoam project in Gary, Indiana
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Highway Reconstruction with Geofoam

This is a nice little overview with Geofoam for people unfamiliar with the material and its applications. It was written by Mr. Nico Sutmoller with Insulfoam, who also contributed this article on a Geofoam project […]

No Picture
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Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments

TRB’s National Cooperative Highway Research Program (NCHRP) Report 611: Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and Embankments explores analytical and design methods for the seismic design of retaining walls, buried structures, […]

Mix Design Practices for Warm-Mix Asphalt from TRB
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Mix Design Practices for Warm-Mix Asphalt

TRB’s National Cooperative Highway Research Program (NCHRP) Report 691: Mix Design Practices for Warm-Mix Asphalt explores a mix design method tailored to the unique material properties of warm mix asphalt technologies. Warm mix asphalt (WMA) […]