At Silverado we thoroughly plan every part of the project, anticipate the problems and come prepared with solutions. Silverado can professionally complete your selective demolition project from extensive structural building renovations, condo conversions and multi-story seismic retrofits to removal of boilers, stairs, elevators, escalators, stacks, conveyors, as well as simple interior demolition projects. Silverado also performs drilling and installation of rebar dowels, concrete roughening, and surface preparation for building and bridge retrofit projects. From base isolations to bridge retrofits, we have the experience.
The Salesforce Tower formerly known as the Transbay Tower is a 1,100 foot tall office skyscraper in the South of Market District of downtown San Francisco. The building will be
the second tallest building west of the Mississippi River and 300’ taller than the Transamerica Building. The 61‐story tower is office space over ground floor retail and is directly connected to the Transbay Transit Center. The foundation work for the new Transbay Tower had 42 installed 5’ x 10’ load bearing elements (LBE) to a depth of approximately 200’ below street level. A post installation investigation found flaws in the finished product that required removal of top 5’ up to 25’ of the LBEs. The 180’ x 200’ site just outside the building footprint was shored and excavated to a depth of 60’ below street level below the top of the structural top of the LBEs. Micro‐pile and soil grout rings were installed around the perimeter LBEs along with a shoring ring and concrete compression rings around the center deeper excavation area to allow exposing the LBES for demolition.
The concrete was removed by hand with small rivet busters and mini‐excavators with hammers. 27 LBEs were repaired where soil was excavated and removed as closet to the lower repair elevation. Soil and material were hoisted up using skip boxes loaded by excavators and skid‐steer loaders. All work was performed at the bottom of a 60’ deep excavation requiring all equipment and material to be hoisted in and out. With successful hazard communication and coordination Silverado successfully performed the project within the specified time allowed and within budget.
Terminal 2, San Francisco International Airport
Selected by Turner Construction Company, Silverado performed selective demolish at the former international terminal of the San Francisco International Airport. All interior and exterior finishes were removed from this 500,000 square foot building, reducing the structure to a steel and concrete shell. This project required precise execution and detailed planning as live MEP systems feeding the occupied air traffic controller tower above ran through the work area.
Plant Construction chose Silverado to perform the selective demolition for the renovation of the historic Levi Strauss factory, located in San Francisco, into a private school. Silverado demolished raised flooring, elevators, wall partitions and MEP in order to get the building ready for the new construction.
Walt Disney Family Museum
Silverado performed the selective demolition on three historic buildings located on the old parade grounds in the Presidio of San Francisco. Silverado first removed all non-historic interior walls, flooring and ceilings. The entire basement slab and some foundations were removed to make way for a new subbasement and underground theater. Extensive structural demolition was completed for the required seismic upgrades and many new openings in the brick walls were necessary. Brick was salvaged and palletized onsite for later reuse at the project site. In addition historic wood paneling was cataloged and removed for refurbishment and reinstallation. Now completed the former army barracks buildings house a new state of the art museum highlighting the career of Walt Disney.
John Adams Campus, CCSF
Silverado performed the renovation of the historic 1912 brick and steel building in two phases. Our crews carefully removed plaster ceilings, walls and wood flooring to allow for the seismic upgrade, while maintaining the historic fabric of the building. The boiler and mechanical systems were demolished and concrete walls were removed.