Chevron Refinery Building 71 Seismic Upgrade

The Technology Center supports alternative fuel research and product improvements for the Richmond campus. Building 71 is composed of three separate structures with seismic isolation joints between them. The project includes a voluntary strengthening of existing concrete walls and columns in addition to new exterior concrete buttresses supported on new deep pile foundations. Shotcrete wall overlays, steel channel […]

UCSF Benioff Campus Infrastructure Improvements

Major infrastructure upgrades to an occupied hospital campus, including a large scale retention system along highway 24 and utility reconfiguration to make the site ready for UCSF Benioff’s vision for their new Oakland Children’s Hospital Campus. As part of the structural scope, Overaa will install a massive 30′ high by 500′ long retaining system along […]

Roosevelt Middle School Modernization

Modernization of the main classroom building and structural upgrade to the theater to meet current safety guidelines and general improvements to the learning spaces throughout the building. Scope also includes Interim Housing fit out and site utilities and permanent Modular Science & Restroom Buildings work including earthwork and concrete foundation, fit out and site utilities.

Palace Theater Bay Area Technology Charter School

The Palace Theater, first built in 1923, was used for vaudeville performances before it became a movie theater in 1931, then a church in 1952. Closed since 2013, the Palace Theater is being reimagined as a three-story STEM-focused charter school for Bay Area Technology Charter School, Oakland. It was named redevelopment of the year for […]

MCE Solar One Farm

MCE Solar One’s 10.5 megawatt (MW) solar system produces 22,000 megawatt hours (MWh) per year of pollution-free electricity, enough to power over 3,400 homes annually. A collaboration of the Richmond community and Chevron Refinery, we teamed up with RichmondBUILD to maximize the use of local residents through job training and engagement. Overaa’s scope of work […]

Chevron Richmond Lubricants Plant Seismic Retrofit Phase 1

Chevron Richmond Lubricants Plant (RLP) is a large, combined use laboratory and office building constructed in 1947. The mission-critical building distributes lubricant products from the refinery so operations could not be interrupted during construction.  The project included a voluntary seismic retrofit and subsequent ADA upgrades. Work included MEP modifications, and life safety and egress improvements. […]

Cutting Blvd. Distribution Center

For Prologis, this 144,843 SF concrete tilt-up warehouse will serve as a distribution center for a national vendor. Included was a 4,715 SF office space on the first level, 4,245 SF office at mezzanine and potential future office of 2,100 SF.  The building structural system consists of compacted aggregate piers (CAP), conventional steel tube columns, […]

Hayward High School Modernization

The Hayward High School Modernization project consists of 3 phases. Phase 1 was the renovations to the gymnasium. Phase 2 included interim housing, gym bleachers, and seismic strengthening. Phase 3 was the modernization of various buildings on the campus and HVAC upgrades.

Fairfield Suisun Bioenergy Generation

Upgrades will enable the Fairfield Suisun Sewer District to efficiently utilize the gases created from their solids-to-waste-water treatment process to generate their energy to fully power operations. They project includes demolition of existing cogeneration and gas conditioning equipment and installation of new spark-ignition generator and cogeneration equipment. Project includes new equipment pads, structures, five new […]

FedEx Distribution Center

FedEx’s new state-of-the-art distribution center is designed to have zero emissions within five years of operation and is considered to be one of the greenest distribution facilities in the western region. Construction included 80 concrete tilt-up panels averaging 42′ tall.  The facility includes 45 dock bays at the rear and front of the building for […]