Architectural and Engineering Design Standards

Telecommunications Design 12

2. The racks shall be a standard 7’ tall, 2-post with a floor mounted design. Provide with two-sided
   EIA hole pattern and 19” wide.


3. A minimum of 3 feet shall be given between rows of racks.


4. Install 12” vertical wire managers between adjoining racks and a 6” cable manager at each end of
   the row. The rack closest to the wall shall be given 6” of clearance away from the wall.


5. All racks shall be secured and anchored at the base of the rack.


6. Each rack shall be bonded with a dedicated #6 AWG copper conductor back to the TR’s TGB.

H. Cable Tray

1. Basket style tray shall be provided around the perimeter of the room to serve all horizontal data
   cabling as well as backbone cabling. See chart below for sizing guidelines.


2. A separate 6” wide x 4” deep cable tray shall be provided and installed above the horizontal data
   cabling tray to serve access control and special systems cabling.


3. Provide waterfall cable management or “drop-in” kits to allow for all cabling to be managed
   appropriately and within the manufacturer’s recommended minimum bend radius requirements.

Room Size Basket Tray Size

# of Category 6

Cables

8’ x 10’ 12” x 4” Up to 240*

10 x 15’ 18” x 4” Up to 365*

**12’ x 20’ 18” x 4” Up to 365*

* Table is based on 0.25” O.D. cable and 50% fill for design purposes

** Preferred room size for new TR buildout. Other dimensions given for projects with existing constraints.

I. Cable Management

1. All racks scheduled for a telecommunications room shall host double-sided cable managers. A 6”
   cable manager shall be placed at the ends of the row. All other vertical managers placed between
   racks shall be 12” in width. Any reduction in size from 12” shall require authorization from the
   Health Care Information Systems department.


2. Provide horizontal cable managers inside each rack. See the rack diagram illustrations below for
   additional information.


3. In a telecommunications room that is scheduled to receive floor penetrations and sleeves, provide
   wall mounted basket tray to help manage and support cabling. The width of the tray shall cover the
   width of the series of floor penetrations.


4. All cabling entering the telecommunications room shall be neatly bundled utilizing Velcro straps for
   support. Maintain these bundles while cable enters each rack for termination. Pay attention to
   bundle sizes as to not exceed manufacturer’s recommendations so that near-end alien crosstalk is
   minimized.

J. Grounding and Bonding

1. All cable trays within the TR shall be grounded and bonded to cable tray system.


2. A grounding bus bar shall be provided within every TR mounted above the cable tray system. It
   shall be a 12” x 4” insulated copper bus bar and grounded to the electrical service ground. See
   standard TR plan for location.


3. Provide a grounding/bonding connection from the telecommunications grounding bus bar to:
   a. Each individual rack (see illustration below for additional requirements)
   b. Each conduit penetration entering the room
   c. Basket tray
   d. Shield/jacket of fiber optic cable

November 1, 2016