Architectural and Engineering Design Standards

Rev. 13 November 1, 2016

Page | 47

4.16 Division 22 – Plumbing

22 05 00 Common Work Results for Plumbing

1. For both new construction and renovation work, install all waste pipes as high as possible to maximize clearance
   height.


2. Routings of plumbing pipes shall be, in general, horizontal or perpendicular to building lines


3. Pipes shall not be routed over electrical equipment rooms, telecom closets, elevator equipment rooms, elevator
   shafts and major medical equipment.


4. For plumbing risers that span more than two floors, install those risers inside of chases.


5. Coordinate installation on piping to ensure that if does not interfere with access to pneumatic transport tube diverter
   and HVAC systems


6. Install labels on all types of insulated plumbing systems at appropriate intervals.


7. Install tags on all valves unless valves are ¾” diameter or less and adjacent to equipment served. Valve tags shall
   include the valve number and the project number. Coordinate the specific numbering sequence with the Owner’s
   Rep. during the construction phase of each project.


8. Install dielectric connections in the plumbing systems where any dissimilar metals are in contact.


9. Pressure testing is required on all piping systems. All pressure tests shall be witnessed and/or signed off on by the
   Owner. The Contractor shall provide seven days advance notice of all pressure testing.


10. The Design Professional shall require and review the utility co-ordination drawings before construction
    commences.


11. The Design Professional shall pursue and address the risk of pipes that might freeze due to exposure to the
    elements during construction. If this is the case, a note shall be added requiring the Contractor to protect the pipes
    during construction activities.

22 05 53 Identification for Plumbing Piping and Equipment

1. Provide equipment identification on all equipment furnished under this division. Where practical, provide plastic
   laminate tags indicating the equipment identification number in a clearly visible spot. Where no appropriate flat
   surface exists for a plastic laminate tag, provide brass tags on chains attached to the equipment. These equipment
   tags are distinct from the Preventive Maintenance numbers that the Owner’s personnel install after the construction
   phase.


2. Coordinate all equipment identification numbers with the Owner. It is the Owner’s intent to assign, during the
   design phase, plan marks to all equipment items.

22 11 16 Domestic Water Piping

1. Materials
   a. All above-ground domestic water pipes up to 4” diameter shall be ASTM B88 Type L copper unless the Owner
   authorizes otherwise. All joints for copper piping up to and including 4” diameter shall be soldered.
   b. All above-ground domestic water pipes 4” diameter and above shall be either ASTM B88 Type L copper or,
   where authorized by the Owner, ductile iron (ASTM A377). All joints for copper piping over 4” diameter shall
   be sill-brazed.
   c. All above-ground piping systems above 2” diameter shall, unless authorized by the Owner, have flanged
   fittings on all valves, strainers, and any other equipment that could require maintenance.


2. Routings