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The Program Committee cordially invites you to attend Geo-Congress 2019: The Eighth International Conference on Case Histories in Geotechnical Engineering, which will be held March 24–27, 2019.
From the early days of modern geotechnical engineering, sharing field experiences of the performance of geostructures – dams, foundations, tunnels, landfills – in the form of case histories has driven the advancement of knowledge for the geotechnical profession. Geo-Congress 2019 will continue this tradition and feature experiences and observations from hundreds of geoengineering projects, including recent “MegaProjects.” The conference will include a wide range of informative technical and panel sessions, short courses, and workshops. Join us in Philadelphia to celebrate our geo-accomplishments!
Short Course 7: Foundation Cost Estimating for Geotechnical Engineers
Rockin’ the Foundations at the Hard Rock Casino
The Seminole Tribe of Florida initiated construction of a $1.8 billion extension to its Hard Rock Hotel and Casino in Hollywood, Florida. The overall project includes an iconic, guitar-shaped, 36-story hotel structure on the edge of a lake, a subsurface valet tunnel accessing an existing, multi-story parking structure, and various low-level structures housing resort amenities. Extensive ground improvement and geotechnical construction was required for both the building foundations and the tunnel construction, requiring several different techniques to address the subsurface conditions, site restraints, and project requirements.
Rigid Inclusions Ground Improvement for A New Energy Facility: Design, Construction and Full-Scale Embankment Load Testing and Results
This presentation describes the use of rigid inclusion ground improvement techniques at an energy facility located in a coastal New England city. Difficult geotechnical conditions and proposed loading at the site drove the recommendation of typical deep foundations for structural support, e.g. piles or drilled shafts. However, in some areas, rigid inclusions ground improvements were employed. Rigid inclusions, when designed and constructed properly (that is, grid spacing, element depth, diameter, etc.), allows traditional, cost-effective spread footing and slab-on-grade foundation support. This approach often reduces overall project schedule and budget when compared to deep foundations with pile caps and structural slab construction.
Verification Load Testing of Micropiles Under Combined Axial and Lateral Forces
Micropiles were installed at a school site in California to underpin an existing building to mitigate liquefaction hazards. They were installed through predominately silty and clayey strata with intermediate sand lenses and drilled to a gravel layer approximately 21.3 m (70 ft) below the ground surface. They were grouted under pressure to create an end-bearing zone in the gravel layer. Because of seismic concerns, the regulatory agency (DSA) required that verification tests be conducted under combined lateral and axial loading. Full scale pile load testing under combined axial and lateral loads is sparsely recorded in the literature. A case history is presented including the results of the combined tests on four of the micropiles.
The Ground Improvement Toolbox for Liquefaction Hazard Mitigation: Three Case Histories
Following a brief discussion on liquefaction triggering and the engineering mechanics involved for using ground improvement for liquefaction-hazard mitigation, three case histories are presented herein. The case histories will describe the design and execution of projects using the following ground improvement methods: 1) vibro replacement for soil densification, 2) deep soil mixing for soil shear reinforcement, and 3) earthquake drains for improved drainage conditions.