25G - ENGINEERING SRVS GRADE SEPARATION

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II ~ . II rc Mr. Cheang has provided foundation design for close to three hundred new, re- placed and widened structures, statewide, for various transportation and public Geotechnical Services works agencies. These structures include railroad bridges, major water crossings, IIIIIIIII~' °~°'il ~ iil III II"' "ii III 'iii iil II i long viaducts, and overcrossings and undercrossings at major interchanges. He is currently providing foundation design recommendations for two grade separation MS/1979/Civil Engineering BS/1978/Civil En ineerin projects (Streeter Avenue and Riverside Avenue) in the City of Riverside. He is fa- g g miliar with Caltrans design philosophy and criteria, and the review process. He has PE/1987/California No: C41401 (Civil) worked closelywith civil and structural engineers to develop and refine cost-saving GE/1997/California No. 2345 schemes for foundations. Mr.Cheang iscurrently apart-time faculty at California State University, Long Beach, teaching courses on soil mechanics and soil labora- torytesting. ~ I I I wow ui ui ur i These two grade separation projects involve depressed roadways with R/R tracks on a R/R bridge. This project is currently in the field exploration phase. . _ ° I . ° . I ,I ° ° ~ ;;The project i ncludes providing geotechnical recommendations for construction of a R/R bridge and adjoining high retaining walls. I I, I II ° Provided all aspect o foundation design including design of a subdrain system for the depressed roadway. I ~ ~ ' Provided foundation .III ~ ~ design recommendations fora 16-span railroad overpass including several tall retaining walls at the approaches. I i .I x u sill' Collected and reviewed field and laboratory test results to assist Civil and Structural engineers in foundation design for bridges, retaining walls and cut-and-cover structures. I i I ~ I I I ~ T is is a mayo r I I south-end project for the Alameda Corridor. The project includes 2 bridges crossing Dominguez Channel and a long R/R viaduct. I ,I I ' I e~~~ Provided preliminary foundation design recommendations for alternative analyses. II , ~ II II I„ Co llected a nd reviewed field and laboratory test results to assist Civil and Structural engineers in foundation design for bridge alternatives, one of these alternatives is an underpass option with groundwater issues. I I I _ ~ ~ ~ ~ ~ ~ ' ~ _ i ~ This is a underpass but no groundwater issues. The foundation system consists of large-diameter drilled shafts atthe bents and driving piles attheabutments. a . i , II II ~ ~ II x „N~~~ ~~~~~~~W ~ ~ I ' ~ III II I I ir~ ~ ~ .