Engineering – Water Checklist
Plan Review
- Identify pipe size, length and material for all new and existing public main and service lines.
- Zinc coated ductile iron (ZDI) is required for all new public water mains.
- Dimension water from curbs and within easements (6’ from curb North/East and centered within easement).
- Dimension right-of-way, private and/or public easement widths.
- All valves and fittings must be shown on plan view (notes only will not suffice). Notes must call out valve sizes and fitting sizes.
- All connection types shall be MJ.
- All fire hydrant and fire protection services shall be MJxFLG.
- Identify all fire hydrant connections, materials, and fittings.
- All joints from hydrant to the tee must be mechanically restrained.
- Provide mechanical joint restraint lengths. For pipe 12” or larger, restrain ALL joints.
- All sites located within the earthquake high hazard zone liquefactions zone are required to mechanically restrain all pipes, joints and fittings no matter the pipe size.
- Address any potential conflicts with water infrastructure by showing other utilities, structures, trees, driveway locations, etc.
- Address all utility crossings with water by identifying vertical and horizontal separation.
- Show water crossings on sewer and/or stormwater profiles. Profiles for water required on 12” and larger mains.
- Call out blow-offs as either standard or temporary per W-14 and W-15
- ARV required at all high points for water main 12” or larger
- Thrust blocks required on tapping tees and connections to existing unrestrained pipe shown on plan view and called out in notes section
- When pipe deflection proposed, show angle or radius, beginning and endpoints per manufacturer’s specifications
- Identify water meter size (including deduct and/or irrigation meters). Show location on plan view.
- Each building shall be metered separately.
- Identify backflow size and type (must be WA State approved)
- Show location on plan view – backflow locations must be placed outside near water meter unless otherwise approved by the City of Vancouver Water Quality Group
- RPBA required on all uses identified under Table 9 of WAC 246-290-490
- RPBA required on all sites that have access to unapproved auxiliary water supplies (i.e. wells)
- Identify any existing wells and proposed retention or demolition of well
- Retained wells may only be used for irrigation and RPBA will be required on the domestic service
- See the example typical water design sample plan (PDF).
- Designing your civil plans accordingly will assist in reduction of preventable redlines.
Resources
Permit Center Engineering
citycddeng@cityofvancouver.us
360-487-7804
