Sanitary Sewer System Design — Portland
Your Portland area development requires connection to the City of Portland sanitary sewer system. Calichi’s Portland engineers prepare sanitary sewer plans for commercial, residential, and mixed-use projects, coordinating with the City of Portland Bureau of Environmental Services throughout design and approval.
Why Calichi Design Group
Our Portland office has designed 100+ sewer systems. Our hydraulic calculations are stamped by Oregon PEs and accepted by BES plan check engineers. We have established relationships with BES staff.
What’s Included
Existing sewer main location; wastewater generation estimates; hydraulic pipe and grade calculations; peak flow analysis; lift station design if needed; cleanout spacing per code; stamped PE plans and calculations; BES coordination.
FAQs
What is the minimum pipe slope?
Oregon Code requires minimum 2% slope for 6-inch pipe. Larger pipes can use lower slopes.
Do I need a lift station?
Required when gravity sewer is not feasible due to topography or main depth.