Tunnel Boring Machine (EPBM) for 13-foot diameter tunnel under an environmental wetland in Sacramento. Excavation shoring is by "soil nailing" and grouted tie-backs 30' long. Perry provided Resident Engineering for SRCSD. |
Jacking Shaft for 7-foot Herrenknecht Microtunnel Boring Machine, boring under the American River. There were two tunnels, each 600 LF in length. Perry provided Resident Engineering for Sacramento County |
"Secant pile Shaft" 80 feet deep to receive the tunnel boring machine after it tunnels under the American River. Two of these shafts were required, one for each 600 LF long tunnel. The shaft inside diameter is approx. 22 feet. |
Contra Costa Water District, Bollman Water Plant, aerial view. Perry consulted and managed several large and small projects for CCWD, including the Bollman Safety and Water Quality Project and Developer Projects. |
The Salinas Valley growers, shown harvesting crops, benefit from the irrigation facility that distributes reclaimed water at Castroville. Perry managed this 48 mile pipeline & pumping project for the Monterey County Water Resources Agency. |
This 2 million gallon water reservoir serves northern Sacramento. Its construction utilized a technology ("DYK") to wrap the tank with reinforcing cables for strength. Perry performed inspection and resident engineering for this facility. |
As a member of the Program Management Team, Perry wrote the Portland CSO Program Management Plan. This photo, courtesy of CSO, shows a large interceptor pipe being lowered into a secant pile shaft near the Willamette River. |
Perry's role as Construction Manager for the San Francisco Public Utilities Commission's program management included engineering studies at O'Shaughnessy Dam, pictured here on the reservoir side. |
OVERVIEW |
National Park Service, Aquatic Park, San Francisco: Upgrade of promenade level of this national historic building. Perry was resident engineer for the project, following strict park guidelines on construction practices. |
Cured-In-Place-Pipe (CIPP): Insituform® pipe liner has resin showing blue color in the photo. Substantial hazardous material were tested and removed during the project. Perry provided resident engineering and CPM scheduling for Sacramento Area Sewer District. |