Common use of Design calculations Clause in Contracts

Design calculations. All subdivisions are required to show design calculations of proposed sanitary sewer systems and shall be submitted to the Public Works Department. The applicant shall submit a design stamped by an Engineer licensed by the State of Oregon. Single family residential services, provided they are not part of a larger development project, are not required to submit calculations to the City provided that they meet the minimum slope requirements. The calculations shall include the following items: 1. A plan showing the proposed street system, tributary sub-areas, existing and future tributary areas, outside the project limits, zoning, projected land use, and any features affecting the system design. 2. Minimum and maximum velocities at the proposed slope and design flows for the proposed development. 3. Load calculations for any shallow installation applications or where heavy traffic loads on the piping system is anticipated.