Stiver is proudly supporting the Ashbridge’s Bay Treatment Plant Outfall. This $300 million project for the City of Toronto will replace the current outfall tunnel, which is at the end of its service life. It is set to be the largest wastewater outfall in Canada. The project includes a 16-meter diameter shaft by 85-meter deep,…
The sewer system in the city of Las Vegas was disjointed and inefficient. Connections to the main sewer line were sporadic, and relief sewers could not adequately intercept flow. To support the City’s waste management, Stiver Engineering provided key design services for the Paradise Whitney Interceptor in Las Vegas. The project consisted of a 32,000-foot…
As a part of Memphis’ North Mud Island Interceptor Sewers Project, Stiver Engineering was retained to provide a shoring design for sliplining an existing 120” diameter RCP sewer line with a 110” diameter Hobas pipe. A custom trench box was proposed with an arch spreader and walers to resist the lateral pressures from weak sandy…
The City of Houston has spearheaded the Northgate Regional Lift Station project as part of its plan to reduce operational and maintenance costs by consolidating 39 wastewater treatment plants and more than 380 lift station facilities. As a result, the project will decommission the Imperial Valley Wastewater Treatment Plan, which handles 4 million gallons of…
As part of a 108-inch transmission waterline project along Esplanade Boulevard between Imperial Valley Drive and Green Plaza in Houston, Stiver Engineering provided a custom lifting plan for the bottom elbow of the waterline at one of our shaft designs. The fitting had to be lifted and held in place while it was welded to…