San Fernando Valley, CA
Geotechnical Investigation, Materials Inspection and Testing Services
The project consisted of a 14-story hotel building with 3 subterranean parking levels below grade. The 3 level subterranean parking levels extended the entire area of the property. During construction, a shoring system with tie-backs was utilized to support the excavation.
A total of 112 soldier piles were drilled with depth varying from 35 feet to 60 feet at four sides from east to west and from north to south. A total of 262 tiebacks were drilled with an angle varying from 15 degrees to 25 degrees and with depth varying from 36 feet to 90 feet. Core barrels had to be used to drill through rocks (cobbles and boulders) and to overcome the hard surface.
Converse conducted a geotechnical investigation including borings, laboratory testing and the preparation of a report presenting our findings, conclusions and recommendations for seismicity, liquefaction analysis, bearing capacity, settlement and earthwork for the proposed facility.
During construction we provided soils and materials testing and inspection including shoring and tie-back installation and grading observation. Concrete, masonry, grout and mortar were tested in our in-house laboratory. We also provided continuous inspection of steel welding in the fabrication shop and in the field to include UT and NDT testing.