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Eric Yuen, PE, SE
<br />Design Engineer — Building Rehab & Structural
<br />Seismic
<br />Mr. Yuen has more than 12 years of experience in the design, analysis
<br />and detailing in structural engineering. Mr. Yuen is knowledgeable in
<br />reinforced concrete, masonry, structural steel and wood frame design,
<br />and construction for a variety of building and infrastructure projects
<br />including reservoirs, water/wastewater treatment facilities, as well as
<br />seismic retrofit of existing structures.
<br />EXPERIENCE
<br />3.7 MG Zone 1 Reservoir, Irvine Ranch Water District, Irvine, CA. Mr.
<br />Yuen served as structural Project Manager for the prestressed, circular
<br />3.7 MG concrete tanks, along with a few concrete vaults. The new
<br />reservoir is anticipated to be an AWWA D110, Type 1, prestressed
<br />circular concrete Reservoir. Due the height limitations, the freeboard of
<br />the reservoir is limited. The reservoir is roof is engineered to resist the
<br />upward pressure from the sloshing due seismic events. The reservoir is
<br />also designed to withstand the seismic loading from the modified
<br />Education:
<br />B.S., Civil Engineering,
<br />California State Polytechnic
<br />University, Pomona, 2007
<br />Registrations/Certifications:
<br />Registered Civil Engineer,
<br />California, No. 75983, 2009
<br />Registered Structural Engineer,
<br />California, No. 6177, 2014
<br />Professional Affiliations:
<br />American Institute of Steel
<br />Construction
<br />hydrodynamic characteristic caused by the restricted freeboard. As the structural project manager, Mr. Yuen
<br />helps in the shop drawings review process, RFI responding and preforms structural observations in the
<br />construction phase.
<br />Milliken Pump Station, Chino Basin Desaiter Authority, Ontario, CA. Structural Design Engineer for the
<br />design of a building for a booster pump station with separate pump and electrical rooms. The building has
<br />concrete block walls and a steel framed roof structure. Consideration was given to the appearance of the
<br />building so that it will complement the existing well building and 29 MG prestressed concrete tanks which share
<br />the site with the Milliken Pump Station.
<br />Simon Ranch Reservoir Project, City of Tustin, CA. Served as structural Design Engineer providing
<br />preliminary and final design for the demolition of existing and construction of replacement storage, consisting of
<br />a 1.0 MG prestressed concrete reservoir with pipelines and site improvements.
<br />Rawlings Reservoirs, City of Tustin, Tustin, CA. Mr. Yuen served as structural Design Engineer for the two
<br />prestressed, circular 3.5 MG concrete tanks located on a tight site, where space for excavation and material
<br />stockpiling during construction presented many challenges. Shoring for excavations was anticipated up to 35
<br />feet in depth would be required during construction. As the structural design engineer, Mr. Yuen helps in the
<br />shop drawings review process and does structural observations in the construction phase.
<br />Reservoir 1010-1 Piping Seismic Retrofit, City of Ontario, CA. Mr. Yuen served as Structural Designer for
<br />the design of piping retrofits and pipe supports at the inlet and outlet pipes of an existing circular welded steel
<br />tank. Flexible, double -ball expansion fittings were added to both the inlet and outlet piping. The pipe supports
<br />were bolted to the flanges of the flexible expansion fitting closest to the tank. The pipe supports are designed to
<br />resist the forces from the weight of the pipe, seismic loads and thrust loads. These pipe supports are not
<br />anchored to the concrete foundation directly; instead, they are attached to steel base plates that are welded to
<br />the existing steel tank floor plate. This design allows the tank to move independently of the foundation to prevent
<br />damage at the pipe to tank connection during earthquakes. Our analysis also included a check of the adequacy
<br />of the existing concrete thrust blocks buried in the ground to make sure that they have sufficient capacity to
<br />resist lateral seismic and thrust forces.
<br />Seismic Evaluation of Ten Water Storage Reservoirs, City of Ontario, CA. Mr. Yuen served as Design
<br />Engineer for the evaluation of four out of six buried flat bottom rectangular concrete reservoirs. Tetra Tech
<br />performed seismic and safety evaluations on ten of the City's twelve water storage reservoirs. The purpose of
<br />the evaluations was to determine what improvements would be necessary for each reservoir in order to meet
<br />current seismic design standards and OSHA requirements, as well as the estimated cost of the improvements
<br />(engineering design, construction inspection, and construction).
<br />TETRA TECH
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