Construction has started on the tunnel boring machine launch pit for the WSDOT SR 99 Tunnel Project (Viaduct Replacement). The 420 foot long pit is being constructed using secant pile retaining walls, with 2 rows […]
Specialty geotechnical drilling contractor, Crux Subsurface, Inc. of Spokane, Washington was acquired Quanta Services (NYSE: PWR), an S&P 500 company and a leader in infrastructure services for the electric power, pipeline and telecommunications industries according […]
Text from TRB: TRBâ€™s National Cooperative Highway Research Program (NCHRP) Web-Only Document 187: Seismic Design of Geosynthetic-Reinforced Soil Bridge Abutments with Modular Block Facing explores design methods and construction guidelines for using geosynthetic-reinforced soil (GRS) […]
A New Mexico mountain resort recently unveiled their new fitness complex which featured a large indoor swimming pool and 32 person spa. Built on the side of a mountain, on side of the spa structure sits on top of approximately 12.0’ of fill material. When the spa and portions of the deck began to show telltale signs of settlement, the spa was drained and taken out of service, and an investigation was conducted. This investigation revealed a large plumbing leak which had occurred under the pool/spa deck, causing compaction and consolidation of the supporting fill materials. The general contractor on the job broke out a section of the pool deck to make the plumbing repair, and then turned to URETEK ICR for the remediation of the settlement issues.
Management was pleased that the process meant no disruption for their guests. URETEK’s solution was less than 20% of the cost of replacement of the structure.
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Cloud-based 3D modelling technology advances exploration geophysics for improved geologic understanding and drill targeting.
Geosoft announced the release of VOXI Earth Modelling, a cloud-based geophysical inversion software service that generates 3D voxel models from airborne or ground gravity and magnetic data. VOXI is available as part of the Geosoft 2012 Software Release.
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A new synthesis report by the NCHRP aims to identify the current state of the practice in site-specific earthquake design. TRBâ€™s National Cooperative Highway Research Program (NCHRP) Synthesis 428: Practices and Procedures for Site-Specific Evaluations […]
This post contains a list of new, revised and otherwise updated ASTM standards that pertain to the geotechnical engineering, materials testing and related fields. Standard C39/C39M for testing the compressive strength of concrete cyllinders was updated, as was C42/42m for obtaining and testing drilled cores and sawed beams of concrete. The month of March also saw several geosynthetic standards being updated or added, including new standards for selecting the test method for geomembrane seams, and for testing the flexural rigidity of geogrids and other geosynthetics. There are also a few updated standards related to asphalt mix design and sampling of asphalt. Click through for updated ASTM Standards relating to geoprofessionals.
A marine geologist with Natural Resources Canada, Steve Blasco, wondered why the wreck of the Titanic did not sink completely into the ocean sediments at its resting place 4 km below the surface. Mr. Blasco […]
A 2004 paper by J.P. Giroud and Jie Han provides a practical design method for geosynthetic-reinforced unpaved roads. The method outlined in the paper was very detailed, and the authors wanted to provide a summary […]