Havens Elementary School – Ellen Driscoll Playhouse
Complete seismic upgrade and interior remodel of an existing playhouse. Scope included the protection of existing historic finishes, additional structural wood framing and concrete foundation for seismic improvements, new roof and fire sprinkler system, and a complete overhaul of interior finishes. We self-performed the extensive wood framing improvements, which was key to making the schedule […]
Sutter Health Alta Bates Summit Medical Center Parking Structure
Design and construction of a 393,000 SF cast-in-place parking structure in a congested urban environment. The seven-level facility was built on an existing on-grade parking lot in the heart of an operating hospital campus. A multi-story hospital was also being built concurrently on-site. Careful coordination with Sutter Health services and adjacent contractors was required. The […]
Hollister Wastewater Treatment Plant
Construction of a complete 10 MGD wastewater treatment plant from pretreatment through disinfection anchored by a Zeenon Membrane Bioreactor. Additional plant improvements included ground consolidation through the installation of over 250 geo piers, an 8,000 SF operations building, new RTU’s, and SCADA Systems. We self-performed cast-in-place reinforced concrete hydraulic structure with concrete quantities in excess […]
University of California, Berkeley – Underhill Parking & Athletic Field
Design and construction of a 380,000 SF pre-cast hybrid parking facility featuring a roof-level recreation field. The structure fits in seamlessly with and acts as a social hub for the adjacent student housing and private apartments. The four parking levels are either partially or completely below grade. As the site slopes downward, the facility emerges […]
Alameda Civic Center Parking Structure
Design and construction of a six-level, 350 stall parking garage. The new facility features two elevators, two stair towers, and an exterior skin comprised of plaster/metal/concrete/foam shapes/CMU. It is adjacent to a historic theatre built in 1932 that Overaa restored, as well as a new cineplex.
Pleasant Hill BART Garage Expansion
Design and construction of a cast-in-place expansion to an existing parking structure. In addition to developing a design that addressed massing sensitivities to the adjacent residential areas, Overaa developed a two-phased approach that allowed the public to park in the existing structure during construction. The new 525,500 SF, nine-level (1-below grade) parking structure includes three […]
Westlake Shopping Center Parking Structure
Design and construction of 204,670 SF cast-in-place parking structure in a congested retail site surrounded by a residential community. We held regularly scheduled site planning meetings with the owner to ensure pedestrian access to all retail destination points during construction of the six-level, 640 stall facility. Overaa self-performed structural excavation, layout, foundations, slab-on-grade, and vertical […]
Genentech – Concrete Foundations
Construction of new building additions, foundations, and structural elements in containment areas for a pharmaceutical manufacturing facility on 2.5 acre site. Scope covered large concrete pours and various projects at three buildings. Overaa completed two continuous concrete pours two weeks apart totaling 6,500 CY of concrete with 90 cement trucks and five concrete pumps. This […]
Saint Mary’s College Ageno Townhomes
Construction of two wood-framed deluxe student townhouses. The two-level townhouses accommodate 120 students and a courtyard is incorporated in the center of each.
Port of San Francisco Pier 48
Seismic retrofit included driving 30 pipe piles, 115-feet long and 6-feet in diameter, through the pier and bay mud. We used a special vibratory pile driving hammer to decrease loud pounding noises typically associated with pile driving. This alternative reduced noise pollution and caused less stress to aquatic life (and Giants fans in the Ball Park […]
