Item 21 - On -Call Material Testing and Special Inspection Services

Home Browse Search

S. Niranjanan, PE, GE Geotechnical Principal Emphasis • Street Widenings and Improvements • New Pavements and Pavement Rehabilitation • Project Management • Construction Support Professional Overview DIAZ•YOURMAN & ABSOCIAxes -10 G6.4dil"I S Education 2000/Master of Civil Engineering/Civil Engineering/Washington State University 1997/Bachelor of Science/Civil Engineering/University of Peradeniya Sri Lanka Professional Registration 2009/Geotechnical Engineer/CA/2819 2004/Professional Engineer/CA/67023 Mr. Niranjanan is a registered geotechnical engineer with 20 years of geotechnical engineering experience, including street widenings, highway improvements, sound walls and retaining walls, bridges, grade separations, bike paths, pavement evaluation and rehabilitation, buildings, and other transportation infrastructure projects. He has coordinated, performed, or directed geotechnical investigations for over 200 projects, many of which have been for Cities in Orange, Los Angeles, Riverside and San Bernardino Counties. He has practical experience in all aspects (design and construction) of geotechnical engineering, including site selection, field investigations, engineering analyses, recommendations, construction observation and testing, and preparation of geotechnical reports and recommendations. Professional Experience OCTA OC Street Streetcar, Orange County, CA — Geotechnical manager for the design and construction of a two -track streetcar system from the Santa Ana Regional Transportation Center (SARTC) in Santa Ana to the proposed Regional Transit Connection and station in Garden Grove, approximately 4 miles. The project also includes design and construction of maintenance and storage facility and two new bridge structures. DYA provided a geotechnical investigation for the entire alignment, including soil borings, laboratory analysis, engineering analyses, and preparing reports; they also performed an environmental site assessment in OCTA's Pacific Electric Railway right-of-way from Harbor Boulevard to North Raitt Street. Mr. Niranjanan reviewed existing geotechnical/geological data, coordinated permitting process for geotechnical encroachment permits from various agencies such as OCTA, City of Santa Ana, and County of Orange, coordinated subsurface explorations, assigned laboratory testing performed engineering analyses, attended design meetings, prepared reports with geotechnical recommendations, and is providing direction for construction observation services. MWDOC Seismic Retrofit Project, Fountain Valley, CA — Geotechnical manager for engineering and construction management services for a seismic retrofit of MWDOC's Administration Building located in Fountain Valley, CA. DYA's scope of work included spectral acceleration parameters for two ground motions. Mr. Niranjanan prepared a technical memorandum summarizing the seismic design parameters. Edinger Avenue over Santa Ana River, Santa Ana, CA — Geotechnical project engineer for widening the existing Edinger Avenue Bridge over the Santa Ana River. The bridge is located within the County of Orange jurisdiction; the City of Fountain Valley boundary is immediately west of the bridge and the City of Santa Ana boundary is immediately east of the bridge. The existing bridge is a 7-span structure that is approximately 300 feet long and supported on piles. Associated roadway improvements on Edinger Avenue and retaining walls up to 12 feet high were proposed west of the proposed bridge widening. The Santa Ana River is concrete lined at the bridge location. DYA's scope of services included reviewing geotechnical data, performing geotechnical explorations, conducting laboratory testing, performing engineering analysis and reporting. DYA's work was completed on time and on budget. Mr. Niranjanan developed and coordinated the field investigation and analyses and prepared the geotechnical report with recommendations.