Irrigation systems are only to be supplied at the direct instruction of CPS. This system would be limited to the supply of water to the irrigation system to be designed by the Landscape Architect or Civil Engineer.
Water Source
Irrigation systems shall be supplied from the main domestic cold water service, taken after the meter assembly. Irrigation tap shall have its own backflow prevention device with drainable reduced pressure zone and isolation valving for maintenance and testing of the system. Irrigation may be supplied by the building Rainwater Collection or Greywater system if one is present for the building. Irrigation systems include exterior hose bibs located around the building exterior.
Backflow Prevention
All water used for irrigation shall have a proper backflow prevention device. This device shall be located in an accessible location with an adjacent open site drain or service sink for backflow drainage. Devices shall be approved per the City of Chicago Plumbing Code.
Controllers
Any control system for the irrigation shall be provided by the Landscape Architect or Civil Engineer and only be powered by the EOR. The use of a separate water meter to monitor water usage shall be provided by the EOR and tied into the BAS for tracking. Use only WaterSense labeled controllers.
Performance
Reduce the project’s landscape water requirement (LWR) by at least 50% from the calculated baseline for the site’s peak watering month using the WaterSense Water Budget Tool (Refer to Appendix " " for Integrative Design Process).
Coordination
Any connection to an irrigation system shall be coordinated with the Landscape Architect or Civil Engineer. Irrigation systems, when directed to be included in the Scope of Work, are typically limited to the playing field for Athletics programs, and are typically not included for basic building landscaping.