Busch Residence

Busch Residence

Location: Hollywood, CA

Project Type: Site Work

Designed excavation shoring for a 15-foot deep single basement residential building. The bulkhead lines were located close to the property lines and within the influence zone of adjacent buildings. The plan dimensions for the site measured approximately 140 feet by 60 feet. Tiebacks were not an option, so we developed a steel soldier beam and wood lagging system with top cross-lot steel strut and waler bracing to minimize lateral bulkhead movement and reduce the potential for settlement damage in the adjacent buildings. The elevation of the struts was selected to be above the first floor level slab so that the entire basement would be constructed before the shoring struts were removed.


600 Minnesota Street Shoring

600 Minnesota St Shoring

Location: San Francisco, CA

Project Type: Site Work

Designed excavation shoring for one level below grade basement for UCSF’s New Student Housing project. The plan dimensions for the site measured approximately 200 feet by 200 feet. The shoring design involved cantilevering steel soldier beams and wood lagging. The soldier beams were spaced at 6 feet on center to minimize the lateral tip deflection so that tieback anchors would not be necessary. A factor in the shoring design was the evaluation of the adjacent Caltrans 18th Street Overpass to determine the footing locations and depths and whether there would be any impact/surcharge on the bulkhead.


Stanford Thoburn Parking Garage Shoring

Stanford Thoburn Construction Photo

Location: Palo Alto, CA

Project Type: Site Work

Designed excavation shoring for a three level below grade parking garage at Stanford’s Graduate Student Housing Project, Escondido Village. The plan dimensions for the site measured approximately 350 feet by 200 feet. The shoring design involved steel soldier beams with tiebacks and wood lagging. There were three levels of tiebacks, with some specially designed to avoid underground utilities in adjacent Serra Street. In addition to the soil pressures, the bulkhead was also designed for the surcharge loads from two future adjacent buildings. We also worked with the drilling contractor and the general contractor to develop a support system for the excavator used removing soil from the site.