GEOTECHNICAL |engineering geology|foundation engineering|geology|hydrogeology Golder has been involved with design and construction implementation of various tunnelled crossings under major rail, highway and waterway corridors. Many of these projects have involved significant geotechnical and construction risk minimisation. These have included the complete evaluation of stability conditions for the approaches to these structures.Our service areas have grown to accommodate client needs, from specialist services to total project management and turnkey solutions. From our soil science and geotechnical foundations, our expertise has expanded into all aspects of environmental science. With our stateof-the-art equipment and advanced technologies, we can conduct more than 60 geosynthetic and geotechnical tests — all standardized by the American Society for Testing and Materials (ASTM). For some materials, ASTM standards have not yet been created. In those situations, we draw on our professional experience to develop testing techniques that can provide you with a comfortable level of quality assurance. When your technical needs go beyond normal lab testing, we can also draw upon the environmental and/or civil geotechnical experience of Golder Associates’ 1,900 professional staff located throughout a worldwide network of offices. Geotechnical Testing - State-of-the-art equipment and advanced technology allow our geotechnical labs to offer the most complete range of standardized geotechnical soils testing available in the industry. For example, our labs have more than 60 permeability cells located in our offices worldwide with their heaviest concentration in the United States. These perm cells make use of a flow pump, which expedite results faster than typical falling head results. From grain size distribution to permeability and strength testing, the geotechnical labs produce accurate results that are presented in a technical, but simple, format making interpretation easy. Golder works towards ensuring the quality of procedures, staff and results by membership in the ASTM D18 Committee on Soils and participation in the American Association of State Highway and Transportation Officials (AASHTO) standardization program. AASHTO has accredited our Atlanta and Philadelphia office labs and the US Army Corps of Engineers has also accredited our Atlanta office lab. A list of the ASTM tests we are able to conduct are listed to the right. Geotechnical Tests Atterberg Limits ASTM D4318 Calif. Bearing Ratio ASTM D1883 Carbonate Content ASTM D3042 ASTM D4373 Consolidation ASTM D2435 Direct Shear ASTM D3080 Moisture Content ASTM D2216 ASTM D4643 Organic Content ASTM D2974 pH Determination ASTM D1293 Permeability (granular) ASTM D2434 Permeability (flex membr) ASTM D5084 Pinhole Dispersion ASTM D4647 Proctor ASTM D698 ASTM D1557 Resistivity ASTM G57 Settlement of Cohesive Soils ASTM D4546 Sieve Analysis (Wet) ASTM D1140 Sieve Analysis (#200) ASTM C117 Sieve w/Hydrometer ASTM D422 Triaxial ASTM D2850 ASTM D4767 Unconfined Compression ASTM D2166 Unit Weight & Moisture ASTM D2937 Visual-Manual Class ASTM D2488 |
