Laramie County Central LibraryGeolocation: 41.14, -104.8202

Terracon performed the initial geotechnical feasibility/site selection study for the new county library and the final geotechnical exploration and engineering evaluation for the selected site at Pioneer Avenue and West 22nd Street. For the final geotechnical study, Terracon performed a total of 12 soil borings, ranging in depths from 6 to 62 feet, to determine the subsurface conditions within the proposed building and car parking areas. Based on the soil subgrade conditions encountered, detailed geotechnical design recommendations were provided for deep foundations to support the heavy column loads. In addition, design and construction recommendations were provided for floor slabs, site drainage, earthworks, and pavement. Terracon proposed a value engineered solution to the costly foundations, including the use of more advanced methods of subgrade exploration and insitu soil testing. Down hole pressure meter testing was employed to enhance the evaluation of the soil moduli and strength properties in the depth ranges most critical for the pier design. Based on the results of the pressure meter testing, Terracon was able to work in close association with the structural engineer to refine and enhance the foundation design parameters. The value engineered drilled pier design was reported to have saved approximately $280,000 over the preliminary design. Terracon also performed construction materials and quality control testing during construction phases of the project. Construction materials and quality control testing services included pre-construction mix designs for concrete and asphalt, concrete testing, masonry observations and testing, structural steel observations, and asphalt testing.

Cheyenne, WY


Associated Office

CheyenneGeolocation: 41.1314, -104.8302
Terracon's Cheyenne office has provided engineering services since 1972. Our professional and field staff routinely work on projects throughout Wyoming. Our office is often a project center providing a full range of materials engineering and testing, geotechnical engineering, and environmental engineering services. The Cheyenne office specializes in Alkali-Silica Reactivity testing (ASR), and the environmental department has expertise in solid waste management.