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8. Compatibility - When work with CPVC special consideration is necessary when in <br />contact with other materials or chemicals. (See manufacturer's guidance on <br />installation and compatible materials.) <br />9. Non -System Components - Sprinkler piping or hangers shall not be used to <br />support non -system components such as ducting, electrical wiring, cabling and <br />ducting. <br />10. Sprinkler Verification - Verify locations, type, and temperature of sprinkler heads. <br />11. Sprinkler Obstructions - Proper clearance of sprinkler heads from obstructions. <br />12. Sprinklers Spacing - The distance from sprinklers to walls shall be a minimum of <br />inches and not exceed one-half of the allowable distance between sprinklers. <br />13. Sprinkler Spacing - Check for correct distances between sprinkler heads, maximum <br />coverage per sprinkler heads, suspended ceilings and distance below roof deck. <br />14. Inspector Test- Check for installation of orifice in inspector's test. (Orifice shall be <br />the same size as the smallest orifice installed in the system.) <br />15. Panted Sprinklers - Check to ensure fire sprinklers are not painted. Painted fire <br />sprinklers shall be replaced, they shall not be cleaned. <br />16. Valve Locations - All control, auxiliary, and inspector's test valves shall not be <br />located more than seven feet above finish floor or grade. <br />17. Protection Against Freezing - A wet pipe system shall be used where piping is <br />installed in areas that can be maintained reliably above 40°F (4°C). Piping in areas <br />that cannot be maintained reliably above 40°F (4°C) shall be protected by use of <br />one of the following methods: <br />• Antifreeze system using a listed antifreeze solution in accordance with <br />NFPA 13 <br />• Dry pipe system <br />• Pre -action system <br />• Listed dry pendent, dry upright, or dry sidewall sprinklers extended from <br />pipe in heated areas <br />• Heat tracing <br />18. Insulation - Piping covered by insulation, as shown in the detail below is <br />considered part of the area below the ceiling and not part of the unheated attic <br />area. <br />Fire Marshal's Office 1425.257.8100 1 everettwa.gov/fire I INFORMATION HANDOUT C-6 14.13.2020 1 Page 6 <br />