Facility Design Guidelines - Facilities Management - University of ...

preventing epoxy coating, and from the outside with bitumastic/coal tar based
waterproof coating.
Cleanouts shall be installed in concrete pad flush with surface for HS 20 rated
installation.
SW 5.3 EXTERIOR DOMESTIC WATER AND CHILLED WATER PIPING
Piping mains shall be a minimum of 6" in diameter. Domestic water piping shall have a
minimum of 3'-0" ground cover. Chilled water piping shall have a minimum of 4’-0”
ground cover. All buried water lines shall have a sand or stone dust bed and cover.
Valves shall be installed at all piping branch-offs.
Underground water distribution pipe shall be asphalt coated, cement lined ductile iron,
Class 52 or higher, with flexible restrained joints. All fittings and hardware shall be epoxy
coated.
The buried chilled water supply pipe shall be insulated. Field installed rigid foam glass
with 50 mil poly jacket is preferred; however, pre-insulated double wall pipe is
acceptable.
New chilled and domestic water branches shall preferably be connected to existing
mains with full size tees; reducing tees or wet taps can be only be used with prior
approval of UVa Energy and Utilities Department. Resilient seat gate valves shall be
provided at the connection point to the main; where full size tees are used the valve
shall be full size and upstream of any reducer.
The entry point into buildings shall be with factory flanged ductile iron, Class 53 or
higher.
Branch lines 2 ½” and smaller shall be copper type "K".
Water lines shall be tested to 200 psig.
Domestic water lines shall be bacteria tested.
SW 4 SITE DRAINAGE SYSTEMS 110