2013 Water System Plan, Volume II - Seattle City Clerk's Office - City ...

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Description Design Criterion/Design Data Comments Access Ports 24-inch Located every 1,000 feet along pipeline and at both ends of tunneled crossings 5.5 DESIGN PROCESS See DSG Chapter 1, Design Process. The design process for water infrastructure does not differ from that described in Chapter 1. 5.6 DISTRIBUTION AND FEEDER MAIN DESIGN This section describes distribution and feeder main design. Distribution mains are smaller diameter (
Chapter 5 Water Infrastructure 5.6.1.3 Fire Flow Rate and Duration The City of Seattle, City of Shoreline and King County have adopted the International Fire Code (IFC). Site specific fire flow requirements as determined by the appropriate Fire Marshall are used when issuing Water Availability Certificates and sizing of new water mains. 5.6.2 Location Distribution mains are typically located within the right-of-way (ROW) in a standard location at a standard depth. See City of Seattle Standard Plan 030. Standard locations allow Field Operations and Maintenance to easily access the mains while keeping the ROW available to other utilities. SPU does not allow build-overs on water mains. SPU may install or allow installation of water mains in private streets or easements. Location of the mains is determined case-by-case in easements less than 20 feet. 5.6.2.1 Separation from Other Utilities Standard horizontal and vertical separations may not always be feasible in highly developed urban corridors. Special construction methods can be used to provide equivalent levels of protection to the standard separation criteria. Separation distances to provide structurally sound installations depend on the available working space for construction and soils and groundwater conditions at the site. See Standard Plans 286A and 286B. For height, the design engineer must look for overhead power and maintain a safe distance to the power lines and structures. The distance depends on the power line voltage and the distance to a structure. Consult with the electrical utility to determine the project-specific safety distances and with the Department of Planning and Development (DPD) for any structural permit requirements. Where standard pipeline separations cannot be achieved, an engineered design must be developed for adequate separation. The Washington State Departments of Health and Ecology jointly publish the Pipeline Separation Design and Installation Reference Guide. The design engineer must use this guide to design pipeline separations whenever standard SPU criteria are not feasible. 5.6.2.2 Geotechnical Investigations and Test Holes Geotechnical (subsurface) investigations and test holes are typically not as critical for distribution lines as they are for transmission mains. The design engineer must review DSG section 5.8.2.2 (Geotechnical Report) and consider the necessity of subsurface information for the project. 5.6.2.3 Alternative Locations For some projects, space may not be available to locate the water main in the standard location shown on Standard Plan 030. Other controlling factors such as water supply require that an existing water main be kept in service while a new main is installed in a non-standard location. 5.6.3 Materials This section describes standard materials used in SPU water distribution system projects. SPU Design Standards and Guidelines 5-17
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2013 Water System Plan Our Water. O
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Seattle Public Utilities 2013 Water
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SPU 2013 Water System Plan 2013 Wat
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SEATTLE PUBLIC UTILITIES 2013 WATER
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2013 Water System Plan Official Yie
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WATER DEMAND FORECAST MODEL STRUCTU
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Household size is calculated for si
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Annual Growth in Average Water Rate
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forecast by subtracting the project
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Components of Actual and Forecast W
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The graph below contrasts the offic
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Forecast Uncertainty What is most c
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the extent to which price-induced c
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Passive Savings: Passive savings co
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The uncertainty model represents a
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Permit Certificate or Claim # Prior
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Permit Certificate or Claim # Name
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Groundwater Elevations at Seattle W
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Forquestions,callKristinaWestbrook,
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WaterReclamationEvaluationChecklist
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9. 24 HOUR PRIMARY CONTACT INFORMAT
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1. SYSTEM ID NO. 77050 Y WATER FACI
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Water System Management and Operato
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SPU 2013 Water System Plan Appendix
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SPU 2013 Water System Plan Appendix
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Water Treatment Chemicals February
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Page 71 and 72: Table 1 Tolt Water Treatment Facili
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Page 81 and 82: Table 11 Metered Connections by Cla
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Chapter 5 Water Infrastructure 5.10
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Chapter 5 Water Infrastructure Foll
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Chapter 5 Water Infrastructure Cont
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Chapter 18 Plan Review Contents Cha
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18.2 GENERAL INFORMATION This secti
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Figure 18-1 Development Permit Boun
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18.3.1.5 Street Use Permit SDOT iss
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3. The Conditional Reviewer enters
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Table 18-2 Information Included in
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5 working days. If an SPU plan revi
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esponsibility in verifying and prot
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RPS sends letter to property owner
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Table 18-4 Plan Review Roles and Re
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Stormwater Code(2009) SMC Chapter 2
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each pay period, SPU Finance sends
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Director’s Rule Title Standard, C
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Other New Service Installation Stan
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Exception: To renew and increase ½
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• Adjust buried, obstructed or lo
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3.16 HYDRANT RESET Set hydrant back
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4. DEVELOPER PROJECTS Note: Charges
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5. PROPERTY SERVICES SPU must charg
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elow- or above-ground structure mea
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6. LABORATORY ANALYSIS All laborato
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SEATTLE PUBLIC UTILITIES 2012-2014
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Effective January 1, 2014 (a) (b) (
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Policy and Procedure Title Water Av
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1) Location of the property, includ
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J. The easement for an SPU-owned ma
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Seattle Public Utilities System Sto
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actual experience with the 1987 Tol
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pipelines to lower pressure zones t
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Pressure Zone West Seattle 498 West
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Seattle Public Utilities - 2013 Wat
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DELRIDGE WY SW Haller Lake INTERSTA
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Seattle Public Utilities 2013 Water
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Water System Planning Handbook Chap
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