Project Category: Diaphragm Walls

SFPUC Biosolids

SFPUC Biosolids Digester Facilities: Malcolm Drilling's Successful Partnership The San Francisco Public Utilities Commission (SFPUC) is a city department that provides drinking water and wastewater services to San Francisco, as...

Second Narrows Tunnel

Diaphragm Wall Expertise in Metro Vancouver's Second Narrows Tunnel Metro Vancouver is advancing the Second Narrows Tunnel, a critical water supply project under Burrard Inlet, contracted to Malcolm Drilling for...

Ship Canal Tunnel

Constructing Seattle's Ship Canal Tunnel to Enhance Water Quality The Ship Canal tunnel underground storage is a 2.7-mile stretch from Ballard to Wallingford. The tunnel will prevent an average of...

Zilker Point

Transforming Challenges into Solutions with Diaphragm Walls Zilker Point, a remarkable architectural project located in Austin, Texas, boasts not only a 7-story above-grade office building but also a 5-story below-grade...

Silicon Valley Gravity Pipeline

With the significant population growth in the San Francisco Bay area, the Silicon Valley Clean Water’s (SVCW’s) wastewater conveyance authority that serves more than 200,000 customers sought replacements for their...

Block 185

Cut-off Wall Solution for Block 185 Block 185 is a 37-floor building with six basement floors below the ground surface, situated beneath the groundwater. The project is within 300 feet...

Santa Ana Bridge

Diaphragm Walls help improve Infrastructures The Santa Ana River is designed to improve the scour protection of the BNSF Railway Bridge foundations, during large discharges of the Prado Dam, located...

Wet Weather Equalization Basin

A Wet Weather Equalization (EQ) Basin was constructed in the city of Pacifica to mitigate storm-related sanitary sewer overflows. Malcolm installed a diaphragm wall 500 feet from Pacifica State Beach,...

50 Calle

Diaphragm Wall Solutions at 50 Calle A commercial development at 50 Calle included the construction of a four-level underground parking garage. Malcolm designed and constructed the diaphragm wall, optimizing the...

W.A.T.R. Facility

Malcolm's first diaphragm wall ("D-Wall") project in Oregon was for a pump station and associated water treatment plant in Hillsboro. A diaphragm wall is a reinforced concrete wall, excavated under...
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