Elihu Harris State Office Building
Overaa built the foundation for the Elihu Harris State Office Building in downtown Oakland. At the time, it was the largest continuous concrete mat pour in the East Bay. The building spans an entire city block. A team of more than 100 people worked as long as 22 hours continuously to complete the 6,318 cubic […]
Delta Diablo Sanitation District Recycled Water Facility
The Delta Diablo Sanitation District Recycled Water Facility, built for Calpine, produces title-22 water to feed two power plants and 20 acres of parks and landscaped areas. It includes complex cast-in-place concrete structures using over 25,000 cubic yards of concrete to support the “purple pipline” that saves over 8600 acre feet of potable water every year.
Cal State East Bay Pioneer Heights Student Housing
Major 198,100 SF addition to existing campus student housing complex. Construction included three, four-story dormitory buildings all connected by an exterior walkway. The four buildings were located to create a large courtyard with grassy common areas and hardscape for students to gather. Many carefully integrated building components were included: built-up roofing and standing seam; conventional […]
Columbia Park Manor
Construction of a 62,000 SF affordable housing complex for seniors. The two-story, wood frame and structural steel building contains 80 units. Community involvement was an important priority – Overaa met all MBE/WBE/Local project requirement goals. The project was located in a congested residential urban area with adjacent occupied buildings.
De La Salle High School Music Building and Library
Construction of a new 4,400 SF music building and the 866 SF library addition on an occupied campus. The new music building features practice rooms, instructor offices, bathrooms, interior mechanical and electrical rooms, instrument and uniform storage rooms with cabinetry, block walls, and a curved metal roof over a curved wall. Additionally, the building has […]
Stewart Elementary School
Major remodel of three wood-framed, single-story buildings on an occupied campus. Work included abatement, demolition, modernization and adding additional classroom space, remodel and addition of roofs, MEP, air-handlers and finishes. Structural concrete and steel work also provided.
Moraga Valley Presbyterian Church
This project included a new sanctuary and administration building. Overaa craftsmen constructed the sanctuary with high-end architectural concrete work, a copper roof and elegant site work. The architectural symmetry and stained glass transform this house of worship into a stunning piece of artistry.
Piedmont High School and Middle School Renovations
Primary scope of work included renovations and seismic improvements for Piedmont High School’s Quad/Library (Building A) and Student Center (Building B). Building A included protection of existing historic type finishes, demolition and abatement, seismic improvements of new hand dug 12’-20’ deep foundations, concrete/shotcrete walls to roof structure for seismic reinforcing, a new roof plywood and […]
Kaiser Oakland Garage #1
3″-6″ thick mat slab foundation for a six-level (two below grade), 531-stall parking structure that Overaa built. We placed 5,339 CY of concrete for the foundation over a 24-hour period. This required 594 deliveries – one every 1.6 minutes with 66 mixer trucks. We self-performed the foundation and placing of all vertical concrete. Adjacent occupied […]
Tesoro Refinery Central Control Building
New state-of-the-art facility that serves as the nerve center for this Martinez, CA refinery. The new building consolidates all process controls and communications into a central hub for the refinery. Construction included precast concrete walls, steel joist with metal deck, metal stud wall, extensive HVAC system, sophisticated electrical system, parking lot with site concrete and […]
