Summary
Provide all labor, materials, equipment, permits, supervision, and incidentals necessary to furnish and install freeze-less hydrants to provide potable water service on the roof of the buildings. The intent of this project is to provide year-round access to water for maintenance and operational purposes while protecting the water supply system from freezing conditions. Contractor shall: verify existing building plumbing systems and identify the most practical connection point for supplying potable water to the new roof-mounted hydrants; furnish and install freeze-less wall hydrants or roof hydrants specifically designed for freeze protection and exterior use in climates subject to freezing temperatures; extend domestic cold-water piping from the existing plumbing system to the new hydrant locations. Piping shall be sized appropriately to maintain adequate flow and pressure; route piping through the building structure to the roof in a manner that minimizes disruption to building operations and maintains the integrity of all building systems; provide all required roof penetrations, flashing, waterproofing, and weatherproofing necessary to maintain a watertight roof system. All roof work shall be coordinated with the building owner's roofing requirements and manufacturer recommendations; provide isolation valves within the building to allow servicing of each hydrant without interrupting water service to the remainder of the facility; insulate all piping located in unconditioned spaces and provide freeze protection measures where necessary.