GROUP DELTA OPENS NEW OFFICE IN SAN DIEGO!

Group Delta is pleased to announce the opening of our San Diego office (the former operation of Geotechnics, Inc.), effective July 31, 2010.

Area Manager Dick Roberts, Senior Geotechnical Engineers John Theissen and Tom Canady, and a staff of over 20 Engineers, Geologists, Technicians, Accounting and Support Personnel will remain from the former company. Read More

THE CAMPUS AT PLAYA VISTA

The Campus at Playa Vista is a Class A office space consisting of four buildings totaling 325,000 square feet. It features a nine acre Central Park adjacent to the south and sweeping views from the Santa Monica Mountains to Downtown Los Angeles. Due to the presence of liquefiable soils and highly compressible clayey soils, this building was supported on driven piles. Due to high variability of the subsurface soil condition, Group Delta’s design involved two different pile lengths based on a refined subsurface exploration program. This unique design saved our client approximately $200,000 dollars in foundation costs. Our design also prevented potential claims from the foundation contractor regarding difficulties in installation of pile foundation. Due to high liquefaction potential, and to satisfy the regulatory agency’s requirements, we also performed a site-specific seismic response study using appropriately selected ground motion time histories. Our unique specialty in deep foundation design and seismic study saved our client appreciable amount of time and cost on this specific project.

VIEJAS BLVD BRIDGE OVER SWEETWATER RIVER SELECTED AS PROJECT OF THE YEAR!

The Viejas Boulevard Bridge over Sweetwater River near the community of Descances was named as 2010 Project of the Year by the American Public Works Association San Diego and Imperial Counties chapter. The new arched bridge replaces one built in the 1950s that had posted weight restrictions preventing large vehicles form crossing it and Caltrans determined did not have adequate shoulders. Group Delta provided the geotechnical and seismic recommendations for the design of the replacement bridge.

2009 CALTRANS SEISMIC DESIGN CRITERIA SEMINAR

Effective September 30, 2009, Caltrans requires that all projects without previous Type Selection approval are to be designed in accordance with the 2007 Caltrans Fault Data Set and the 2009 Caltrans Seismic Design Criteria (SDC)

Group Delta has obtained Caltrans approval on application of the new procedure on a number of Caltrans highway bridge projects.

For consulting engineers practicing bridge and highway engineering in Southern California, Group Delta would be happy to come to your office and give our presentation.  It is an informal brown bag style PowerPoint presentation and seminar and takes about 45 minutes followed by Q+A.  More Details

RECENTLY AWARDED PROJECTS

The Los Angeles Unified School District (LAUSD) has selected Group Delta Consultants to provide On Call Geotechnical Engineering Support Services to the Facilities Services Division, Existing Services Branch. We will provide both design and construction phase services, including performing Comprehensive Geotechnical Investigations and Geologic Seismic Hazard Evaluations in accordance with Title 24 of the California Code of Regulations and the CDMG Checklist for the Review of Engineering Geology and Seismology Reports for California Public School, Hospitals and Essential Buildings. Over the past 10 years, Group Delta has provided geotechnical services on over 100 Task Orders for the District , involving the design and construction of new campuses, classroom buildings, parking structures, playgrounds and other facilities. In addition, the firm has also provided materials inspection and tesing services for almost $1 billion of new school construction.

The Parsons Team which included Group Delta Consultants for geotechnical engineering and materials testing was recently awarded the contract for Project and Construction Management (PCM) for the SR-91 Corridor Improvement Project by the Riverside County Transportation Commission (RCTC). The project which spans roughly 11 miles is expected to include 16 new/replacement bridges, 21 widenings, and associated new tie-back walls, retaining walls, soundwalls, and roadways.