March 2019 2020 FDG Section 27 10 00web.stanford.edu/group/lbre_apps_forms/maps/fdg/fdg_documents_… · drawings (CM-XX) are available on the same website under the “FDG Available

Stanford University – Information Technology Services Section 27 10 00, Issue #7, March, 2019

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March 2019 2020 FDG Section 27 10 00

SECTION 27 10 00

Communications Design Specifications (Pathways and Spaces) - Architects & Engineers Stanford University - Information Technology Services

Issue Author, Date Approved By, Date Effective Date 1 Mike Peralta, 12/17/03 Phil Reese, 1/15/04 9/1/04

2 Mike Peralta, 1/3/05 Erich Snow, 1/3/05 1/3/05



5 James E. O’Connor, 12/01/14 Erich Snow, 1/22/15 1/22/15

6 James E. O’Connor, 2/8/16

7 James E. O’Connor, 03/01/19 Gary Gutfeld 03/01/19


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SECTION 17050.001 (SECTION 27 10 01)

Communications Design Specifications (Pathways and Spaces) - Architects & Engineers Stanford University - Information Technology Services

Table Of Contents Subject Page

Purpose 4 Responsibilities 4 Telecommunications Infrastructure Design Criteria 7

MAJOR COMPONENTS 7 GENERAL PLANNING CONSIDERATIONS 8 STRUCTURED BUILDING CABLING SYSTEM – SUPPORT STRUCTURE SIZING IMPACT 8 ABANDONED CABLE REMOVALS - MAJOR RENOVATION PROJECTS 9

Telecommunication Codes And Standards 9 BUILDING ENTRANCE CONDUIT 10

GENERAL 10 SIZE 10 DEPTH – EXTERIOR CONDUIT 10 MATERIAL 10 DUCT PLUGS 11 BENDS & SWEEPS 11 GROUNDING 11 MANDREL TESTING, PULL TAPES, PLUGGING 11 BUILDING ENTRANCE BOXES 11

Building Entrance Facility Space (If Required) 12 GENERAL 12 LOCATION 12 SIZE 12 WALLS 13 DOORS 13 FLOORS 13 CEILING 13 ELECTRICAL POWER 13 LIGHTING 13 GROUNDING 14 CABLE PULLING IRON/EYE 14

Telecommunication Rooms 14 GENERAL 14 ROOM TYPES 14 LOCATION 15 SIZE 16


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SUBJECT PAGE RISER SYSTEMS – MTR/TR ENTRY 24 HORIZONTAL CONDUIT - MTR/TR ENTRY 24 HORIZONTAL CABLE TRAY SYSTEM - MTR/TR ENTRY 24 DOORS 24 FLOORS 25 WALLS 25 CEILING 25 FIRE PREVENTION 25 ELECTRICAL POWER 26 LIGHTING 26 ENVIRONMENTAL CONTROL - HVAC 26 GROUNDING 27 CABLE PULLING IRON/EYE 29

BUILDING BACKBONE PATHWAYS 29 GENERAL 29 RISER SYSTEMS 29 CABLE PULLING IRON/EYE 30 HORIZONTAL CONDUIT (EFS TO MTR, MTR TO TR, TR TO TR) 31

HORIZONTAL PATHWAYS 31 GENERAL 31 CABLE TRAYS 31 CONDUIT (TSO DISTRIBUTION) 34 J-HOOKS 36 SURFACE MOUNTED OR RACEWAY (SMR) 37 RING & STRING 37 FIRE-RATED BARRIER PENETRATIONS 38

TELECOMMUNICATION SERVICE OUTLETS (TSO) 38 GENERAL 38 WALL/CEILING MOUNTED TSO OUTLET BOXES 39 FLOOR MOUNTED TSO OUTLET BOXES 40 SURFACE MOUNTED RACEWAY TSO’S 42

ACCESS CONTROL SYSTEM SYSTEMS 42 General 42


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PURPOSE: This Facility Design Guideline (FDG) document is intended for use by architects and engineers to design telecommunications pathways and spaces for new buildings and major renovation projects at Stanford University (SU). Use of this FDG will meet Stanford University Information Technology Facility Engineering (UIT-FE) requirements for new buildings and major renovation projects (Stanford University Campus and School Of Medicine Buildings).

This FDG does not address design requirements for specialized communications buildings and rooms as follows:

Buildings planned for use as Data Centers, Electronic Communication Hubs, Node Buildings, or other Building Automation Service Control Centers.

In general use buildings, those rooms planned for use as server rooms, computer data rooms, audio / visual control rooms, security control rooms, etc.

RESPONSIBILITIES:

General Depending on project scope, the responsibility for planning, designing, and construction of new buildings and major renovation projects will be project managed by the applicable capital planning and management group, i.e. SU - Capital Planning and Management (CP&M), School of Medicine – Facilities Planning & Management, SU Residences – Housing Capital & Planned Projects. A Project Team will outline the entire planning, design and construction process into nine Process Phases. Each phase of the process contains tasks, deliverables and approvals designated as Process Controls which ensure that the project is on track with the overall goals, budget and schedule, and that the various stakeholders are knowledgeable and able to make informed decisions. The Process Phases are as follows:

1. Scoping 2. Feasibility 3. Programming 4. Schematic Design 5. Design Development 6. Construction Documents 7. Permitting 8. Construction 9. Closeout

Project Team The Project Team is generally comprised of four distinct groups formed according to function and expertise, i.e. User Group, Consultant Group, Technical Group and Support Group. Each Group provides input, guidance and professional expertise throughout the design, construction and closeout phases of a project.

Support Group: includes SU management and staff (primarily from the applicable capital planning & management group) and acts to bring the other groups together to authorize, organize and implement a capital project.

User Group: comprises the faculty, staff, and students, and is organized to collectively speak to the Project Team through the Facility Coordinator, Department Head (Dean or Administrative Director), and sometimes an Executive Committee of designated Users.

Consultant Group: includes design and construction professionals and consultants that have been contracted by the Support Group. This group implements the design and construction through input from the other three groups.


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Technical Group: comprised of a Core Group of Stanford personnel (and outside consultants or contractors they may hire) which is responsible for communicating relevant issues about scope, budget and schedule to their group’s participants and to the other Core Group members. This group acts to consult and advise on each individual project to refine the project consistent with overall campus needs.

Project’s Project Manager (Support Group)

The Project Team for a new building or major renovation project is usually led by the Project’s Project Manager (PPM) as shown in the following SU-Capital Planning & Management (CP&M) Project Diagram.

The Project’s Project Manager shall ensure that telecommunications design requirements are

communicated to the four Project Team groups and the Core Group as applicable. Building Client - Facility Coordinator (User Group) The User Group (Building Client - Facility Coordinator) shall, with the help of the Project’s Project Manager, identify the telecommunication media requirements for voice, data, and CATV services for the Project. The telecommunications requirements will be refined during subsequent Project Phases.

The User Group (Building Client - Facility Coordinator) shall work with the architect, engineers and the University Information Technology Facility Engineer (UIT-FE) to document the telecommunication media type requirements and telecommunication service outlet (TSO) locations for the Project.


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Architect and Engineers (Consultants Group) The architect and engineers shall work with the User Group to determine the telecommunication media type requirements and telecommunication service outlet (TSO) locations for the Project.

The architect and engineers shall utilize applicable Facility Design Guideline (FDG) documents to develop the telecommunication support structure design requirements. The relevant UIT Telecommunication FDG’s are as follows:

Section Number 27.10.00, Communications Design Guidelines (Pathway & Spaces) – Architects & Engineers, Current Issue.

Section Number 27.11.00, Telecommunication Rooms, Current Issue. Section Number 27.05.28, Interior Pathways, Current Issue. Section Number 27.05.43, Underground Pathways & Spaces, Current Issue. Section Number 28.13.00, Access Control Enterprise System – Card Access, Current Issue. Note: The telecommunications Facility Design Guidelines referenced above are available on the Stanford Design Guidelines website: http://maps.stanford.edu/fdg_available. The applicable reference documents are listed under Division 27 Communications Services. The UIT reference drawings (CM-XX) are available on the same website under the “FDG Available Drawings” link.

The architect and engineers shall indicate, on the design drawings and in the design specifications, the location and specifications of the physical infrastructure required for a complete telecommunications cabling pathway and distribution system. The design specifications shall support current and future telecommunications needs for the building as follows:

Physical pathways and support structures to support the campus backbone entrance cable systems to the building.

Physical pathways and support structures to support horizontal, riser and distribution cable systems within the building.

Conditioned telecommunication rooms - dedicated to telecommunications cabling and equipment. Telecommunications service outlets (TSO’s) - to meet the building occupant’s requirements. Access Control Doors – to meet SU Building Access Policy requirements.

University IT – Facilities Engineering (Technical Group): The University IT (UIT) Facility Engineering Group is responsible for planning, designing and maintaining the telecommunications infrastructure for all voice, data, video, access control, wi-fi and cellular repeater services for Stanford University.

Note: Network connectivity withstanding, Stanford UIT does not generally provide end-to-end design or install facilities for Audio-Visual, CCTV, Fire Alarm, Energy Management, etc. These facilities are normally provided by the Client or the Project. By mutual agreement, Stanford UIT can provide end-to-end cable placement support for non-supported systems, if complete and detailed specifications are provided to the UIT Facility Engineering Group, e.g. copper, fiber, and coaxial cable types, sizes, splicing requirements, termination hardware requirements, etc. Stanford UIT does not currently design, activate, test, and turn-up these systems.

The UIT Department’s responsibilities for new buildings renovation Projects are as follows:

Cabling and Equipment Design: An University IT Facilities Engineer (UIT-FE) is assigned to coordinate with the CP&M Project Team to direct the design of the telecommunications infrastructure. The UIT-FE’s design responsibilities are:

• Review and provide applicable comments for schematic design drawings, design development drawings, construction drawings, and submittals as the Project progresses thru Process Phases.

http://www-facilities.stanford.edu/fdcs/


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• Prepare various construction drawings and written specifications for the installation of cables to and within the building.

• Prepare, issue, and maintain the Telecommunication Service Outlet (TSO) “Bible Sheet” drawings that depict the TSO number, type and location for the building.

• Prepare a competitive Invitation for Bid (IFB) for submission to qualified cabling contractors (CC) who will subsequently provide and install the telecommunications cabling and equipment.

• Coordinate the IFB bid process and award with the SU Contracts and Procurement Department.

• Coordinate the project work and service provisioning tasks with other UIT Departments. Cabling and Equipment Project Costs: An University IT Facilities Engineer (UIT-FE) will provide

the CP&M Project Team with a cost estimate for telecommunication facilities for the project. The cost estimate includes voice, data, and video telecommunications facilities and network equipment. Rough Order Magnitude (ROM) costs for telecommunications will be provided during the Programming Phase. The telecommunications cost estimates will be refined during the Design Development and Construction Documents phases. The cost estimates will be broken down into the following budget categories:

• Site preparation • Building Wiring & Infrastructure • Engineering & Project Management • Networking – Net to Jack • Service Activations / Surge (Voice/Video/Regional / Access Control / Alarms / Equipment • Project Phones / Monthly Services

Cabling Installation & Inspection: A University IT Facilities Engineer (UIT-FE) will project manage the installation and inspection of the CC’s work. The following are the UIT-FE’s responsibilities:

• Project manage the CC’s work and perform ongoing work inspections. The CC is responsible for the coordination of their work operations and schedule with the projects’ General Contractor and their sub-contractors.

• Attend the Owner / Architect / Contractor (OAC) meetings. • Provide ongoing coordination and support to the OAC team regarding all aspects of the

telecommunications infrastructure and cabling work. TELECOMMUNICATIONS INFRASTRUCTURE DESIGN CRITERIA

Major Components The telecommunications infrastructure design for new buildings and renovation Projects consists of seven major components as follows:

Building Entrance Conduits Building Entrance Facility Space Telecommunications Rooms Building Backbone Pathway Systems Horizontal Pathway Systems Telecommunication Service Outlets (TSO’s) Access Control System - Doors


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The communications infrastructure design standards have been formulated to be independent of cable plant details.

General Planning Considerations

NOTE: These design criteria apply to “typical” academic or office type environments. They may not apply to “specialty” facilities including, but not limited to, Datacenters, Labs or ECH’s

The communications infrastructure design requirements can be reasonably determined before the number of actual spaces and telecommunication service outlets (TSO’s) are known. This can be accomplished by using the net assignable square footage (NASF) of the building as a benchmark.

Formula for Planning and Estimated Budgetary Purposes: Estimate the maximum number of TSO’s that must be supported if all assignable space contained nothing but office space. Use 100 NASF as a standard office size for this calculation. The number of TSO’s to be equal to the total building NASF divided by 100. These calculations are applicable at the initial programming phase and for budget purposes only.

The Architect and PM shall work with the Building Client – Facility Coordinator to determine the telecommunication media type requirements and telecommunication service outlet (TSO) locations for the Project, i.e. EIA/TIA Category 6, Category 6A, or Fiber-To-The-Desk (FTTD). The Project’s Project Manager shall contact the UIT-FE to request a preliminary ROM cost per NASF TSO.

Structured Building Cabling System – Support Structure Sizing Impacts Currently, SU-IT’s baseline standard for Structured Building Cabling Systems installed in new buildings or major building remodel projects is as follows:

EIA/TIA Category 6 Unshielded Twisted Pair (UTP) cable containing 4-pair, 23 AWG copper conductors. The transmission rate for Category 6 UTP cable is 1 Gigabit per second (1 GBs) up to 100 meters, including all patch cords. The nominal outside diameter measurement of a typical Category 6 (1 GBs), plenum-rated cable is .23 inches (0.0415 cross-sectional area).

Upon Building Client - Facility Coordinator request and Project funding, UIT Facilities Engineering will provide, install and support an EIA/TIA Category 6A Structured Building Cabling System as follows:

EIA/TIA Category 6A Unshielded Twisted Pair (UTP) cable containing 4-pair, 23 AWG copper cable. The transmission rate for Category 6A UTP cable is 10 Gigabits per second (10 GBs) up to 100 meters, including all patch cords. The nominal outside diameter measurement of a typical Category 6A, plenum-rated cable is up to .31 inches (0.0754 cross-sectional area).

NOTE: The cross-sectional area of Category 6A cable can be 1.9 times the size of Category 6 cable. The larger cable size significantly increases the size and/or number of virtually all cable support structures and pathways including Telecommunications Rooms, two-post equipment racks, cable management hardware, cable trays, conduits, outlet boxes, etc.

Upon Building Client - Facility Coordinator request and Project funding, UIT Facilities Engineering will provide, install and support a Fiber-To-The Desk (FTTD) technology consisting of 50.0 micron multi-mode OM3 or OM4, or Single Mode OS2 fiber cable media.

Abandoned Cable Removals (Major Renovation Project) The National Electric Code (NEC) 2002 requires the removal of abandoned cable in buildings. Abandoned cable is defined as “Installed cable that is not terminated at equipment and not identified for future use with a tag.” The following are the applicable NEC Code Sections:

640.3 (A) Spread of Fire or Products of Combustion. The accessible portion of abandoned audio distribution cables shall not be permitted to remain.


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725.3 (B) Spread of Fire or Products of Combustion. The accessible portion of abandoned Class 2, Class 3, and PLTC cables shall not be permitted to remain.

760.3 (A) Spread of Fire or Products of Combustion. The accessible portion of abandoned fire alarm cables shall not be permitted to remain.

770.3 (A) Spread of Fire or Products of Combustion. The accessible portion of abandoned optical fiber cables shall not be permitted to remain.

800.52 (B) Spread of Fire or Products of Combustion. The accessible portion of abandoned communications cables shall not be permitted to remain.

820.3 Spread of Fire or Products of Combustion. The accessible portion of abandoned coaxial cables shall not be permitted to remain.

830 (A) Spread of Fire or Products of Combustion. The accessible portion of abandoned network-powered broadband communication cables shall not be permitted to remain.

Following the publication of the 2002 NEC, the NFPA updated standards correlating with the NEC to issue similar provisions for the removal of abandoned cable.

By nature, codes are mandatory and have the force of law available for compliance. Failure to comply with codes requiring the removal of abandoned cable can result in fines and the withholding of Certificates of Occupancy. Failure to comply may also result in liability in the event of a building fire.

Note: On renovation projects, the Architect and the UIT-FE shall jointly perform a field survey to determine the status of existing communication cables. Unless otherwise specified in writing by the applicable Project’s Project Manager, the project shall provide for the identification, removal and disposal of existing and/or abandoned cables on all renovation projects.

TELECOMMUNICATION CODES AND STANDARDS Codes pertaining to building, electrical, fire, and safety must be adhered to. National Electrical Code (NEC) and NFPA 70 compliance is mandatory.

Telecommunications Standards are voluntarily adopted in the United States and represent industry consensus on requirements and best practices. The benefit of standards is the interoperability of components and systems, by multiple manufacturers, and the interoperability of local, national and international networks. The Stanford telecommunication infrastructure requirements are based on ANSI/EIA/TIA standards such as:

568-B: Commercial Building Telecommunications Cabling Standard 569-B: Commercial Building Standards for Telecommunications Pathways and Spaces 606-A: Administration Standard for the Telecommunications Infrastructure of Commercial Buildings 607-A: Commercial Building Grounding and Bonding Requirements for Telecommunications 758: Customer Owned Outside Plant Telecommunications Cabling Building Industry Consulting Services International, Inc. (BICSI): Telecommunications Distribution

Methods Manual (TDMM), Outside Plant Design Reference Manual, Wireless Design Reference Manual, etc.

BUILDING ENTRANCE CONDUIT:

General: UIT Facilities Engineering will specify the required number of 4” diameter entrance conduits, the recommended stub-out location to connect to the SU conduit system, and if required, the size and location of new on-site vaults or pull boxes.

New buildings shall connect to the SU underground telecommunications conduit system.


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The Project shall install entrance conduits from a designated exterior conduit stub out point, to and through the building wall, to the Entrance Facility Room (EFR) or Main Telecommunications Room (MTR) inside the building.

The Project may need to install a vault or pull box, on the exterior building site, to meet slope or distance requirements from the underground telecommunications conduit system.

UIT Facilities Engineering will be responsible for extending the conduits, from the new exterior-building conduit stub-out point or new vault/pull box, to the existing underground telecommunications conduit system.

For service security, or disaster recovery reasons, certain buildings may require “loop diversity” or dual building entrance facilities (separate). If required, the number of entrance conduits will be duplicated in each separate entrance.

For detailed exterior pathway specifications: See Division 27: Communications Services, Section Number 27.05.43 http://maps.stanford.edu/fdg_available.

Size:

A minimum of two (2) four-inch (4" inside diameter), to a maximum of six (6) four-inch (4” inside diameter) entrance conduits, shall be placed by the Project (UIT-FE will specify the required number).

Depth - Exterior Conduit:

The depth of the exterior building conduit shall be a minimum 24” cover. Concrete encase all conduit that has less than 24” of cover.

Underground conduit shall be installed with an upward slope from the exterior communications vault or pull box to the building to prevent water draining into the building (1% grade).

Material:

Exterior Underground Conduit (Vault/Service Box to Building Foundation Wall): 4” diameter PVC Schedule 40 type lateral conduit(s) shall be installed underground from the serving UIT vault or pull box, located outside the building, to the rigid metallic conduit(s) stubbed out a minimum of 24” from the exterior building entrance wall

Building Foundation Wall: Conduit penetrations of foundations, footings or outside walls shall be made with rigid metallic conduit stubbed out a minimum of 24” from the exterior building wall and a minimum of 6” from the interior building wall. Threaded couplings shall be used and all joints shall be made tight. Running threads are not acceptable.

Interior Building Conduit: Rigid metallic conduit shall be used from the interior building entrance wall penetration to the Entrance Facility Space (EFS) or Main Telecommunications Room (MTR).

Note: National Electrical Code (NEC) Section 800-50 limits exposed non-rated outside plant cables to a maximum 50 sheath feet within the building. If the 50’ rule will be exceeded, rigid metallic entrance conduit must be (1) continuous to an Entrance Facility Space (EFS) where non-rated outside plant cable can be transition spliced to rated cable or (2) continuous to the Main Telecommunications Room (MTR).

If the underground entrance conduits terminate in the basement, equip each conduit with a Tyco Electronics Corporation-CEV Entrance Seal ( http://www.te.com/en/home.html ). A drain pipe shall be installed from each valve equipped entrance seal’s drain fitting to a floor drain. See Figure #1.

FIGURE #1 (Tyco Electronics Corporation-CEV Entrance Seal)

http://www-facilities.stanford.edu/fdcs/

http://www.te.com/en/home.html


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Duct Plugs:

All entrance conduits shall be plugged at both ends with expandable type duct plugs (exterior vault and building entrance).

Bends & Sweeps:

Entrance conduits, from the exterior vault to the EFR or MTR, shall be installed with no more than two (2) 90-degree bends without some form of breakout (e.g. pull box, vault, etc.). The minimum inside radius of entrance conduit bends shall not be less than 60”. The UIT-FE will specify long sweep bends greater than 60” radius if large size copper cables are planned for placement, or if the building is a “specialty” facility, examples of which include, but not limited to, datacenters and Electronic Communications Hubs (ECH’s). All bends and sweeps shall be concrete encased.

Grounding:

A grounding bushing shall be installed on the interior end of metal conduit. The ends of the metallic entrance conduits must be grounded to the building ground system with a minimum #6 AWG grounding conductor.

Mandreling, Pull Tapes, Plugging

All entrance conduits must be proven after installation. A minimum bend radius of radius 60” or larger shall pass a 3-5/8” x 6” length solid mandrel. 60” radius bends are only allowed for 4” conduits where there is not sufficient room for a larger radius. E.G. – turning up from trench to Entrance Facility or MTR. Only one (1) 60” radius bend is permitted from the last MH to the building entrance.

Conduits shall be installed with a 3/4” – 2500 lbs. tensile strength polyester woven pre-lubed measuring and pull tape (flat design with footage measurement, e.g. Neptco Part No. WP2500P). The wall-to-wall “as-built” footage lengths shall be provided to the UIT-FE.

All conduits shall be plugged upon completion of mandreling using compression type ducts plugs in the vault/pull-box/stub-out and the EFS or MTR.

Building Entry Boxes

The UIT-FE must pre-approve the use of building entry boxes. The number of entrance conduits, the size of and number of building entrance cables, and the bend cable bending radius requirements, will limit the use of building entry boxes.

If pre-approved for use, exterior wall-mounted building entry pull box shall be: 1. NEMA rated for exterior use.


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2. Eighteen (18) gauge, galvanized steel, waterproof boxes with gasket, and screw down covers (Hoffman or approved equivalent).

3. Galvanized mounting hardware shall be used to securely anchor the boxes to the exterior wall. Adequate provisions shall be taken to prevent dielectric action between dissimilar metals.

4. Building entry boxes shall be painted as follows: • First coat: Zinc dust – zinc oxide primer house and trim paint. • Second coat: Type and color to match existing building walls and/or trim where

applicable. BUILDING ENTRANCE FACILITY SPACE (IF REQUIRED)

General: An Entrance Facility Space (EFS) is a place to transition splice a non-rated outside plant cable to a rated building cable (CMR, CMP). National Electrical Code (NEC) Section 800-50 limits exposed non-rated outside plant cables to 50 sheath feet inside the building.

An EFS is required, within 50 feet of the entrance conduit’s building wall penetration, if more than 50 sheath feet of non-rated outside plant entrance cable will be exposed before its end termination in the MTR.

An EFS is not required if the non-rated outside plant cable is installed in continuous rigid or intermediate metallic conduit, without pull box(s), to a point within 50 feet of the cable’s termination in the MTR. The continuous conduit section shall not contain more than two (2) 90-degree bends, from the exterior vault or pull box, to the end of the interior conduit.

Location:

Within 50 feet of the entrance conduits building wall penetration. On a bearing wall. Physically protected if exposed to vehicles or moving equipment. Continuously accessible thru a common public corridor or outside door. Located at a standard working height (Workers are not required to use a ladder or scaffold). Free from moisture, severe temperature conditions or flooding. NOT co-located with other utilities

Size:

Size is based on the square footage of the building and the corresponding number of 4” minimum diameter entrance conduits terminated in the space (four to twelve, in and out total).

The following horizontal space is required on the back wall of the EFS to mount cables and cable splice closures: To 20,000 sq. ft. (4-4” conduits, 2 in+2 out): 42” (1 row)

20,001 - 40,000 sq. ft. (6-4” conduits, 3 in+3 out): 60” (1 row)

40,001 - 60,000 sq. ft. (8-4” conduits, 4 in+4 out): 60” (2 rows)

60,001 - 80,000 sq. ft. (10-4” conduits, 5in +5out): 60” (2 rows)

80,001 – 100,000 sq. ft. (12-4” conduits, 6 in+6out) 60” (2 rows)


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A clear work area of 48” (1 row) to 60” (2 rows) is required in front of the back wall, plywood-mounting surface to accommodate cable splicing operations and splice enclosures (yields 36” of clear work space).

Entrance conduits shall penetrate 4” above finish floor level or wall entrance or enough to permit installation of a grounding bushing.

Walls: Extend from the finished floor to the structural ceiling. Paint all walls in a light color (white) to enhance room lighting (2 coats). Line all walls with Trade Size void free, U.L. Listed and stamped, 3/4-inch fire retardant plywood,

8 feet high. • Plywood shall be mounted vertically starting at 18-inches above the finished floor to a

height of 9-feet, 6-inches. • Plywood shall be securely fastened to the wall-framing members. Wall anchors shall be

flush to the plywood surfaces as to not obstruct the mounting of cabling hardware. The walls shall be capable of supporting attached equipment.

• Plywood sheets shall be: 1. Fire Rated by the manufacturer and painted with two coats of white paint. At least

one (1) Manufacturer’s Fire-Rated stamp shall be visible per sheet or partial sheet of plywood when painting is complete.

Doors: Open 180 degrees outward unless restricted by building code. Minimum 36” wide opening and 80” high with no doorsills. Equip with an UIT controlled Access Control System lock.

Floors: Carpet is not permitted. Floors shall be treated and sealed to eliminate dust and facilitate dust removal. The rating for distributed floor loading must be greater than 50-lbs/sq. ft.

Ceiling: Drop ceiling or suspended ceiling is not permitted in telecommunications rooms and spaces. Minimum acceptable ceiling height is 8’6”. It should be unobstructed to provide space over cable

and cable splices to readily access the cable pathway structure to the MTR (conduit, cable tray, etc.).

Sprinkler heads must be provided with cages to prevent accidental operations. They must be as high as possible to avoid accidental operation from cable pulling activities.

Electrical Power: Install one 120VAC/20AMP duplex outlet (L5-20R) off the plywood backboard for testing and

maintenance purposes. The outlet should be mounted 12 inches from the finished floor and can be on a shared branch circuit.

Lighting: Lighting must have minimum uniform intensity of 50-foot candles when measured 3 feet from the

finished floor.

Grounding:


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Install a Telecommunications Grounding Bus bar (TGB), a pre-drilled copper bus bar with holes for use with standard-sized lugs, having minimum dimensions of .25” thick by 2” wide by minimum of 12” length. The TGB must be bonded to (1) the electrical panel, for that floor of the building, and (2) a separate bonding connection to building steel. The ground conductor shall be a copper conductor sized at 2 kcmil AWG per linear foot of conductor length (minimum #6 AWG up to a maximum size of 3/0 AWG).

TELECOMMUNICATION ROOMS

General: All buildings will have one Main Telecommunication Room (MTR) which serves the common communication requirements of the entire building, i.e. voice, data, CATV, wireless, access control and building automation system. The MTR may also support floor-serving communications cabling terminations to TSO’s a maximum of 295 feet from the MTR. For design purposes, a maximum 175’ radius distance to the serving MTR / TR from the TSO’s should be maintained.

In addition to the MTR, the building may have one or more Telecommunications Rooms (TR’s). A TR differs from the MTR as they are floor serving spaces only. A TR may serve floor space on the same floor as the MTR or on individual floors above or below the MTR.

To maintain security of SU’s voice and data network systems, MTR’s and TR’s shall not house Building Automated Systems (BAS) control equipment not maintained by Stanford UIT. BAS includes Energy Management Control Systems equipment, Fire Alarm Control equipment, Security Control equipment, etc.

UIT shall provide network connectivity from the MTR and TR’s to the various BAS control equipment systems via horizontal cabling to a TSO at or in the respective control equipment.

Room Types: Main Telecommunication Room (MTR): There shall be one MTR that serves an entire building.

• The MTR is the inter-connection point between the campus backbone cables entering the building and building backbone cables to other TR’s or horizontal cabling to TSO’s.

• The MTR houses active network equipment, copper cross-connect facilities, fiber termination patch panel, and TSO termination patch panel mounted on equipment racks.

• Building entrance and building backbone cables will be wall-mounted (110 wiring blocks and cross-connection fields).

• Access Control and CATV equipment will be wall-mounted. • The MTR will also serve as a TR for those TSO’s located on the same floor (within 295

cable feet). • The MTR must be designed to accommodate both current and future applications and

technologies. Telecommunications Rooms (TR’s): In addition to the MTR, a building may have one or more TR’s

to serve floor space on the same floor as the MTR or on floors above or below the MTR. • The TR is a floor-serving space that provides an inter-connection point between the

building backbone infrastructure (from the MTR) and the horizontal distribution infrastructures (to the TSO).

• The TR houses active network equipment, copper cross-connect facilities, fiber termination patch panel, and TSO termination patch panel mounted on equipment racks.

• Building backbone cables and horizontal distribution cable will be equipment rack mounted.

• Access Control and CATV equipment will be wall-mounted.


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• The TR must be designed to accommodate both current and future applications and technologies.

Location: Locate the MTR on the ground floor of the building served, if possible. If located in a basement or below ground level, a floor drain and/or sump pump shall be provided

within the room if risk of flooding exists. The best location for the MTR/TR, and other floor serving TR’s, is the central core area of the

building so that no individual horizontal distribution cable run, from the MTR/TR to the TSO, exceeds the 295 cable feet maximum limitation. If this is not possible, then more than one TR is required on the floor.

The MTR should be vertically aligned or stacked with TR’s on the floors above/below. Locate on a bearing wall to reduce the possibility of future room relocation. The MTR and TR’s must be door accessible from a hallway or other common public area. They

must not be located inside office spaces, classrooms, or auditoria. The MTR and TR’s must be dedicated to telecommunications facilities use only. They may not

contain electrical and mechanical equipment; fire alarm panels, energy management control panels, security control panes, slop sinks for janitors, etc.

The MTR/TR should not be located in or near the following: • Below or adjacent to areas that may pose a potential water hazard (e.g. restrooms,

kitchens). • Near electrical power supply transformers, elevator or pump motors, generators, X-ray

equipment, radio transmitters, induction heating devices and any other potential source of electromagnetic interference (EMI) and radio frequency interference (RFI).

• Near equipment that can cause electromagnetic Interference (EMI). Electrical feeders and branch circuits of noisy equipment must be kept away from sensitive equipment and its associated circuits.

• Near sources of mechanical vibration that could be conveyed to the room via the building structure.

• Near equipment not related to the support of the telecommunications function (e.g. sprinkler, steam, chilled water, supply and waste piping, ductwork, pneumatic tubing, etc.) shall not be installed in, pass through, pass overhead or enter the telecommunications space.

• With water or drain pipes (to include overhead piping of any type) not directly required in support of the equipment within the room. Drain (drip) pans with an appropriate drain shall be placed beneath each pipe, if required. Pipes for sprinkler heads located within the room shall not be located directly above electronic equipment racks and/or cabinets.

• Any place that may be subject to water or steam infiltration, humidity from nearby water or steam, heat, and any other corrosive atmospheric or environmental conditions.

• Share space in electrical closets, boiler rooms, washrooms, janitorial closets, and storage rooms.

• Acoustic noise levels in the MTR/TR must be maintained at a minimum level by locating noise-generating equipment outside the MTR/TR.

Size:


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The MTR/TR shall provide enough space for all planned cable, cable terminations, electronic equipment, environmental control equipment, power distribution/conditioners, and uninterrupted power supply systems required to serve the telecommunications equipment.

The size of an MTR/TR depends upon the following: The planned building use and space usage within the building. Total net assignable square footage (NASF) of the building and/or floor space served. For planning purposes, the number of TSO’s terminated shall be based on one 2-port TSO per

100 sq. ft. of net assignable floor space. The technology media type (Category 6 copper, Category 6A copper, Fiber-To-The-Desk,

etc.). The number of building entrance conduits and/or building backbone conduits. Building entrance and backbone cable terminations (on-wall). Number of equipment racks/cabinets and vertical cable managers. Quantity of common equipment installed, e.g. switches, routers, uninterruptible power

supplies, CATV, access control system, etc. Access to the equipment for maintenance and administration and for equipment changes with

minimal or no service disruptions. (Front, rear, sides). The maximum allowable distance for a horizontal distribution cable is 295 cable feet as

measured from the floor serving MTR/TR patch panel termination to the most distant TSO faceplate. This measurement shall consider the following design criteria:

• The support structure pathways (cable trays, conduit, J-Hooks) for horizontal distribution cables shall be run parallel to building lines. Main backbone cable trays should be installed in hallways. Branch backbone support pathways (cable tray, conduit, or J-Hooks) shall be placed at right angles from the main cable tray to the TSO location.

• Allow for a minimum of 30 cable feet inside the MTR/TR for cable routing and termination.

• Allow for a minimum of 15 cable feet from the ceiling support structure pathway down to the wall-mounted TSO outlet for routing and termination.

• Figure #2 below reflects the 295 cable feet limitation. FIGURE #2: 295 CABLE FEET LIMITATION

MAIN TELECOMMUNICATIONS ROOM (MTR) - CATEGORY 6 (1 GBs) CABLING


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Nominal outside diameter cable measurements for commonly used plenum rated TSO cables: Category 6 (1 GBs) 4-pair, 23 AWG cable = .23 inches OD. Coaxial RG-6 cable (Commscope) = .23 inches OD. MIC 2-Fiber cable (Corning) = .20 inches OD.

Figure #3 below depicts the minimum size MTR space measuring 10’ width x 12’ length x 10’ height (clear of all obstructions). This minimum size MTR will serve the common needs of the building (50,000 GSF or less) and the floor space served directly from the MTR i.e. up to 20,000 NASF or 816 Typical Category 6 (1 GBs) cable terminations. This is equivalent to 408 TSO’s. This minimum size MTR assumes that:

All TSO’s served from this MTR are on the same floor. Note: If TSO’s are also located on another floor, a fourth equipment rack may be required to terminate TSO’s, by floor, in their own individual equipment rack (increases MTR to 10’Width x 15’Length).

All cables are terminated on universal use voice & data patch panels, i.e. not terminated on separate patch panels and equipment racks.

Note: If the Client requires that voice and data cables be terminated on separate patch panels, increase the length of the MTR in 3-foot increments for each additional equipment rack required to separate the voice and data patch panel terminations.

FIGURE #3: Minimum MTR Space 10’ width x 12’ length x 10’ height (clear of all obstructions). TSO’s wired with Category 6 (1 GBs), 4-pair, plenum-rated cables. Serves up to 20,000 NASF or 408 TSO’s.

The Figure #3 MTR above assumes installation of three (3) two-post 19-inch width equipment racks (each @ 20.25” overall width by 8’ height), two (2) 6-inch width vertical cable managers and two (2)


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12-inch width vertical cable managers. The MTR size is based on the following room configuration, clearances, and specifications:

Configuration is one center of room line-up of two-post equipment racks with wall-mounted equipment and wall-mounted cross-connect wiring blocks (front, rear and one side of the equipment rack line-up).

NOTE: A two-post equipment rack may have equipment and termination hardware that may extend up to 12” to the front and up to 24” to the rear as measured from the equipment rack center-line.

Provide a minimum of 36-inches of clear working space in front and rear of equipment racks and wall mounted equipment, 110 wiring block cross-connect fields, and floor conduit risers.

Provide a minimum of 6" equipment depth for wall-mounted equipment installed on plywood backboards to the front, rear and side(s) of equipment racks.

Provide a minimum of 30" side clearance at one end of each row of equipment racks for exit access and to access the rear of equipment racks, rear wall-mounted equipment, side wall-mounted equipment and floor conduit risers.

Provide a minimum 10 square feet of floor space for entrance conduits and building backbone conduits.

Equipment rack #1 will terminate building entrance fiber cables, building backbone cables to other TR’s, copper backbone cables from the MTR wall for TSO’s served from this MTR, and a UPS unit for VoIP emergency power.

Equipment rack #2 will contain various common network equipment for the Building and network equipment for TSO’s served directly from the MTR.

Equipment rack #3 will terminate TSO’s served from this MTR. TSO’s located on the same floor. A maximum of 816 Category 6, 4-pair terminations can be installed in equipment rack #3 (approximately 408 TSO’s).

If floor space served by the MTR exceeds 20,000 NASF increase the length of the MTR in 3-foot increments (1 equipment rack space) for each partial or additional 10,000 NASF served (assumes all TSO’s are located on the same floor as the MTR).

If more than five (5) equipment racks are required, dual equipment rack line-ups may be considered. A minimum 16’ Width x 12’ length room will accommodate six (6) equipment racks with a minimum 36” aisle space between the two equipment rack line-ups.

MAIN TELECOMMUNICATIONS ROOM (MTR) - CATEGORY 6A (10 GBs) CABLING Nominal outside diameter cable measurements for commonly used plenum rated TSO cables:

Category 6A (10 GBs) 4-pair, 23 AWG cable = .31 inches OD. The cross-sectional area of Category 6A (10 GBs) cable is 1.9 times the size of Category 6 cable. The larger cable size significantly increases the size of virtually all cable support structures and pathways.

Coaxial RG-6 cable (Commscope) = .23 inches OD. MIC 2-Fiber cable (Corning) = .20 inches OD.

Figure #4 below depicts the minimum size MTR space measuring 10’ width x 12’ length x 10’ height (clear of all obstructions). This minimum size MTR will serve the common needs of a building (50,000 GSF or less) and the floor space served directly from the MTR, i.e. up to 10,000 NASF or 432 Category 6A (10 GBs) cable terminations. This is equivalent to 216 TSO’s. This minimum size MTR assumes that:

All TSO’s served from this MTR are on the same floor.


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Note: If TSO’s are also located on another floor, a fourth equipment rack may be required to terminate TSO’s, by floor, in their own individual equipment rack (increases MTR to 10’Width x 15’Length).

All cables are terminated on universal voice & data patch panels, i.e. not terminated on separate patch panels and equipment racks.

Note: If the Client requires that voice and data cables be terminated on separate patch panels, increase the length of the MTR in 3-foot increments for each additional equipment rack required to separate the voice and data patch panel terminations.

FIGURE #4: Minimum MTR Space, 10’ width x 12’ length x 10’ height (clear of all obstructions). TSO’s wired with Category 6A (10 GBs), 4-pair, Plenum-Rated Cables. Serves up to 10,000 NASF or 216 TSO’s.

The Figure #4 MTR above assumes installation of three (3) two-post 19-inch width equipment racks (each @ 20.25” overall width by 8’ height), two (2) 6-inch width vertical cable managers and two (2) 12-inch width vertical cable managers. The MTR size is based on the following room configuration, clearances, and specifications:




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Equipment rack #1 will terminate building entrance fiber cables, building backbone cables to other TR’s, copper backbone cables from the MTR wall for TSO’s served from this MTR, and a UPS unit for VoIP emergency power.

Equipment rack #2 will contain various common network equipment for the Building and network equipment for TSO’s served directly from the MTR.

Equipment rack #3 will terminate TSO’s served from this MTR. TSO’s located on the same floor. A maximum of 432 Category 6A, 4-pair terminations can be installed in equipment rack #3 (approximately 216 TSO’s).

If floor space served by the MTR exceeds 10,000 NASF increase the length of the MTR in 3-foot increments (1 equipment rack space) for each partial or additional 10,000 NASF served (assumes all TSO’s are located on the same floor as the MTR).

If more than five (5) equipment racks are required, dual equipment rack line-ups may be considered. A minimum 16’ Width x 12’ length Room will accommodate six (6) equipment racks with a minimum 36” aisle space between the two equipment rack line-ups.

TELECOMMUNICATIONS ROOM (TR) - CATEGORY 6 (1 GBs) CABLING Nominal outside diameter cable measurements for commonly used plenum rated TSO cables:

Category 6 (1 GBs) 4-pair, 23 AWG cable = .23 inches OD. Coaxial RG-6 cable (Commscope) = .23 inches OD. MIC 2-Fiber cable (Corning) = .20 inches OD.

In addition to the MTR, a building may have one or more TR’s that serve floor space on the same floor as the MTR or on individual floors above the MTR.

There should be a minimum of one TR for each additional floor. Additional TR’s may be required on the same floor if the serving area exceeds 20,000 sq. ft. NASF or the horizontal distribution cable length, from TR to TSO, will exceed the 295 cable-foot limitation.

Figure #5 below depicts the minimum size TR space measuring 10’ width x 9’ length x 10’ height (clear of all obstructions). This minimum size TR will serve a maximum of 20,000 NASF or 816 Category 6 (1 GBs) cable terminations. This is equivalent to 204 4-port TSO’s. This minimum size TR assumes that:

All TSO’s served from this TR are on the same floor.

Note: If TSO’s are also located on another floor, a third equipment rack may be required to terminate TSO’s, by floor, in their own individual equipment rack (increases MTR to 10’Width x 12’Length).

All cables are terminated on universal voice & data patch panels, i.e. not terminated on separate patch panels and equipment racks.


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Note: If the Client requires that voice and data cables be terminated on separate patch panels, increase the length of the TR in 3-foot increments for each additional equipment rack required to separate the voice and data patch panel terminations.

FIGURE #5: Minimum TR space 10’ width x 9’ length x 10’ height (clear of all obstructions). TSO’s wired with Category 6 (1 GBs), 4-pair, plenum-rated cables. Serves up to 20,000 NASF or 408 TSO’s.

The Figure #5 TR above assumes installation of two (2) two-post 19-inch width equipment racks (each @ 20.25” overall width by 8’ height), two (2) 6-inch width vertical cable managers and one (1) 12-inch width vertical cable manager. The MTR size is based on the following room configuration, clearances, and specifications:







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Equipment rack #1 will terminate building backbone cables from the MTR; network equipment for TSO’s served directly from the TR and a UPS unit for VoIP emergency power.

Equipment rack #2 will terminate TSO’s served from this TR, i.e. located on the same floor. A maximum of 816 Category 6 (1 GBs), 4-pair terminations can be installed in equipment rack #2 (approximately 408 TSO’s).

If floor space served by the MTR exceeds 20,000 NASF increase the length of the MTR in 3-foot increments (1 equipment rack space) for each partial or additional 10,000 NASF served (assumes all TSO’s are located on the same floor as the TR).


TELECOMMUNICATIONS ROOM (TR) - CATEGORY 6A (10 GBs) CABLING

Nominal outside diameter cable measurements for commonly used plenum rated TSO cables: Category 6A (10 GBs) 4-pair, 23 AWG cable = .31 inches OD. The cross-sectional area of

Category 6A (10 GBs) cable is 1.9 times the size of Category 6 cable. The larger cable size significantly increases the size of virtually all cable support structures and pathways.

Coaxial RG-6 cable (Commscope) = .23 inches OD. MIC 2-Fiber cable (Corning) = .20 inches OD.

In addition to the MTR, a building may have one or more TR’s that serve floor space on the same floor as the MTR or on individual floors above the MTR.

There shall be a minimum of one TR for each additional floor. Additional TR’s may be required on the same floor if the serving area exceeds 10,000 sq. ft. NASF or the horizontal distribution cable length, from TR to TSO, will exceed 295 cable foot limitation.

Figure #6 below depicts the minimum size TR space measuring 10’ width x 9’ length x 10’ height (clear of all obstructions). This minimum size TR will serve a maximum of 10,000 NASF or 432 Category 6A (10 GBs) cable terminations. This is equivalent to 104 4-port TSO’s. This minimum size TR assumes that:

All TSO’s served from this TR are on the same floor.

Note: If TSO’s are also located on another floor, a third equipment rack may be required to terminate TSO’s, by floor, in their own individual equipment rack (increases MTR to 10’Width x 12’Length).

All cables are terminated on universal use voice & data patch panels, i.e. not terminated on separate patch panels and equipment racks.

Note: If the Client requires that voice and data cables be terminated on separate patch panels, increase the length of the TR in 3-foot increments for each additional equipment rack required to separate the voice and data patch panel terminations.

FIGURE #6: Minimum TR space 10’ width x 9’ length x 10’ height (clear of all obstructions) TSO’S wired with Category 6A (10 GBs), 4-pair, plenum-rated cables. Serves up to 10,000 NASF or 216 TSO’s.


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The Figure #6 TR above assumes installation of two (2) two-post 19-inch width equipment racks (each @ 20.25” overall width by 8’ height), two (2) 6-inch width vertical cable managers and one (1) 12-inch width vertical cable manager. The MTR size is based on the following room configuration, clearances, and specifications:








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Equipment rack #1 will terminate building backbone cables from the MTR; network equipment for TSO’s served directly from the TR and a UPS unit for VoIP emergency power.

Equipment rack #2 will terminate TSO’s served from this TR, i.e. located on the same floor. A maximum of 432 Category 6A (10 GBs), 4-pair terminations can be installed in equipment rack #2 (approximately 216 TSO’s).

If floor space served by the MTR exceeds 10,000 NASF increase the length of the MTR in 3 foot increments (1 equipment rack space) for each partial or additional 10,000 NASF served (assumes all TSO’s are located on the same floor as the TR).


Riser Systems – MTR/TR Entry:

The size and number of sleeves/conduits for building backbone riser pathways between the MTR and TR and TR to TR depends on the net assignable floor space and the number of TSO’s served by the backbone system. The UIT-FE will have final approval of the total number of riser conduits or sleeves. Refer to the succeeding Building Backbone Pathway Systems – Riser Systems section for design details.

Horizontal Conduit – MTR/TR Entry:

The size and number of conduits for horizontal building backbone pathways between the EFS and MTR, MTR to TR and TR to TR depends on the net assignable floor space and the number of TSO’s served by the backbone system. Refer to the succeeding Building Backbone Pathway Systems – Horizontal Conduit section for design details.

Horizontal Cable Tray System – MTR/TR Entry:

The size of the horizontal cable tray system from the MTR/TR to the TR depends on the net assignable floor space and the number of TSO’s served by the backbone system. Refer to the succeeding Horizontal Pathway Systems – Cable Trays section for design details

Doors:

Open 180 degrees outward unless restricted by building code. Minimum 36" wide and 80" high with no doorsills. Locate door(s) at far end of the wall, not in the middle. Equip with an UIT controlled Access Control System lock. Must not have windows.

Floors:

Carpet is not permitted in any telecommunications spaces. At a minimum, floors shall be treated and sealed to eliminate dust and facilitate dust removal.

However, vinyl composition tile (VCT) is preferable and should be installed in advance of equipment rack installation.


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Static dissipate floor tile may be the specified floor covering for School of Medicine Buildings (e.g. Armstrong Excelon SDT Static Dissipative Tile).

The rating for distributed floor loading for telecommunications room must be greater than 100 lbs./sq. ft. Concentrated loading must be greater than 2000 lbs. in areas that will support telecommunications equipment.

Walls:

Extend from the finished floor to the structural ceiling.

Paint all walls in a light color (white) to enhance room lighting (2 coats).

Line all walls with Trade Size void free, 3/4-inch U.L. listed, fire retardant plywood, 8 feet high.

Plywood shall be mounted vertically starting at 18-inches above the finished floor to a height of 9-feet, 6-inches.

Plywood shall be securely fastened to the wall-framing members. Wall anchors shall be flush to the plywood surfaces as to not obstruct the mounting of cabling hardware. The walls shall be capable of supporting attached equipment.

Plywood sheets shall be:

1. Fire Rated by the manufacturer and painted with two coats of white paint. At least one (1) Manufacturer’s Fire-Rated stamp shall be visible per sheet or partial sheet of plywood when painting is complete.

Ceiling:

Drop ceiling or suspended ceiling is not permitted in telecommunications rooms and spaces.

The minimum acceptable clear ceiling height is 10’-0”. The ceiling space above the planned equipment racks must be unobstructed to enable the placement of cable trays, horizontal ladder racks and overhead electrical raceway.

Equipment not related to the support of the MTR/TR function (e.g. sprinkler, steam, chilled water, supply and waste piping, ductwork, pneumatic tubing, etc.) shall not be installed in, pass through, pass overhead or enter the MTR/TR space.

Fire Prevention:

Provide fire protection for the TR, if required by applicable codes.

If sprinkler heads are provided, install wire cages to prevent accidental operation.

For wet pipe systems, drainage troughs are required to protect equipment from leakage.

Electrical Power:

Install a 3-phase 120/208V WYE, 5-wire (X, Y, Z, neutral, ground) Load Center Panel inside each MTR/TR. All electrical circuits in the MTR/TR should be served from the Load Center Panel. The Load Center Panel shall be connected to emergency power if provisioned for the building.

Install a minimum of two (2) dedicated, non-switched, protected 120 VAC/ 20 AMP (NEMA L5-20R) plugmold outlet strips (5’ length, 5 outlets). Install one plugmold strip (Wiremold NMGB24612 or equivalent) on the wall area designated for wall-mounted access control


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equipment and one (1) on the wall area designated for the wall-mounted CATV equipment. Each plugmold strip shall be on an individual branch circuit.

Install a minimum of two (2) dedicated, non-switched and protected 120 VAC/ 20 AMP (NEMA L5-20R) outlets, in an overhead electrical raceway, above each powered equipment rack or cabinet (UIT-FE to designate the equipment racks to be powered). Each outlet shall be on an individual branch circuit. Unless otherwise specified, the overhead electrical raceway shall be mounted at 9’-6” AFF above and parallel to the equipment rack/cabinet line-up.

Install a minimum of two (2) dedicated, non-switched, protected 208 VAC/ 30 AMP (NEMA L6-30R) outlets in an overhead raceway above each powered equipment rack or cabinet (UIT-FE to designate the equipment racks to be powered). Each outlet shall be on an individual branch circuit. Unless otherwise specified, the overhead electrical raceway shall be mounted at 9’-6” AFF above and parallel to the equipment rack/cabinet line-up.

Install 120 VAC/ 20 AMP (NEMA L5-20R) duplex convenience work outlets on each wall or at 6-foot intervals around the room. The outlets should be mounted 12 inches from the finished floor and can be on one dedicated, non-switched, protected branch circuit.

Emergency power should be utilized whenever possible. If there is an un-interruptible power supply (UPS) and/or an emergency generator in the building, connect the equipment rack electrical circuits to them (Load Center Panel).

Lighting:

Lighting must have minimum uniform intensity of 50-foot candles when measured 3 feet above the finished floor.

Lighting fixtures must be on dedicated electrical circuits, separate from the circuit that feeds the electrical outlets in the room.

To avoid blocking of light, mount light fixtures in the aisles and not directly above equipment racks, cabinets, frames or other freestanding equipment.

Environmental Control:

The air handling system and environment controls for MTR/TR shall be continuous, dedicated and designed to provide the following:

• Positive airflow and cooling even during times when the main building systems are shut down. The MTR/TR houses sensitive electronic components that will generate heat 24 hours a day, 365 days a year and must be cooled to maintain operating performance.

• Maintain positive pressure with a minimum of one air change per hour.

• Maintain a temperature range of 64۠º F to 75۠º F and humidity range of 30% to 50%.

• Provisions shall be made so the telecommunications equipment will not "thermal out" or overheat due to a loss of power to the air conditioning system.

• HVAC to be thermostatically controlled within the MTR/TR.

Note: If the building's HVAC system cannot meet the above requirements, then a stand-alone HVAC system with independent controls for heating, ventilation, and air conditioning sensors and control equipment shall be located in the MTR/TR.

The HVAC unit shall not be powered off the same electrical panel as the MTR/TR.

If emergency power is available, connect it to the HVAC system that serves the MTR/TR.

For planning purposes, calculate the heat load estimate from powered devices as follows:


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Powered Equipment Type Watts BTU/Hour

Wall-mounted CATV equipment field (one each MTR/TR) 1,000 3,415

Wall-mounted Access Control Panel equipment field (one each MTR/TR)

1,000 3,415

Each equipment rack containing powered equipment (one or more equipment racks per MTR/TR). See Notes below.

5,000 17,065

Notes: 1. A typical minimum size MTR contains a minimum of three equipment racks,

with two racks dedicated to powered equipment. In addition, there will be a minimum of two wall-mounted equipment fields (CATV, Access Control).

2. A typical minimum size TR contains a minimum of two equipment racks, with one rack dedicated to powered equipment. In addition, there will be a minimum of two wall-mounted equipment fields (CATV, Access Control).

Final BTU heat load estimates will be provided after all powered equipment has been selected.

Grounding:

Per NEC and ANSI J-STD-607: The telecommunications grounding and bonding infrastructure originates at the electrical power service entrance and extends to the telecommunication main grounding bus bar (TMGB) in the MTR and to each telecommunication grounding bus bar (TGB) in each TR and the EFS.

A TMGB shall be installed in the MTR. The TMGB shall be a pre-drilled copper bus bar with holes for use with standard-sized lugs, have minimum dimensions of .25” thick by 4” wide and will be variable in length (minimum 20” length).

A telecommunication grounding bus bar (TGB) shall be installed in each TR and the EFS. The TGB shall be a pre-drilled copper bus bar with holes for use with standard-sized lugs, have minimum dimensions of .25” thick by 2” wide and will be variable in length (minimum 12” length).

The TMGB and each TGB must be bonded to: (1) The electrical panel, for that floor of the building. (2) A separate bonding connection to building steel. The ground conductor shall

be a copper conductor sized at 2 kcmil AWG per linear foot of conductor length (minimum #6 AWG up to a maximum size of 3/0 AWG).

If a separate bonding connection to building steel is not installed, a telecommunications bonding backbone (TBB) shall be installed to equalize potentials between all MTR/TR’s in the building with an ultimate connection to the TMGB. See Figure #7 below.


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Figure #7: Telecommunications Bonding Backbone (TBB)


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Bonding connections shall be made from the TMGM/TGB to the following surfaces within the MTR/TR.

• Building steel • Branch circuit panel boards (electrical load center panel) • Entrance conduits • Cable trays • Ladder racks • Equipment racks • Cable sheaths • Power conditioning equipment (UPS) • Primary and secondary surge protectors • Battery racks

BUILDING BACKBONE PATHWAYS

General: The building backbone pathway system (risers) connects the MTR/TR to other TR’s located on higher floors of the building. Vertical alignment of the MTR/TR to TR’s on upper floor levels is the preferred design layout.

While sleeves/conduits are the most common type backbone pathway system for risers, the recent introduction of the EZ-Path Modular Floor Grid System is now the preferred design when the MTR and TR(s) are vertically aligned. The EZ-Path Modular Floor Grid System is a fire-rated design.

Riser Systems

EZ-Path® Modular Floor Grid System The EZ-Path Modular Floor Grid System is a fire-stop system that can handle a high volume of

cables for floor penetrations up to 8” floor thickness. The EZ-Path Modular Floor Grid Systems utilizes the high volume, EZ-Path® 44 Series Pathways installed in banks of four to provide a cabling system pathway with room for growth. See Figure #8 below.

The EZ-Path Modular Floor Grid consists of steel grids that mount one, two, or four banks of fire-stop pathways in built-in slots for a total of up to sixteen Series 44 pathways through a single floor opening. A single bank floor grid comes complete with four Series 44 pathways.

A multi-bank modular floor grid comes complete with fire-stop panels. As additional cable capacity is required, the fire-stop panels are removed and pathway modules containing four Series 44 pathways are installed in each slot.

An individual Series 44 pathway can accommodate up to 296 Category 6 (1 GBs) or 115 Category 6A (10 GBs) communications cables. Each bank module will handle up to 1,184 Category 6 (1 GBs) or 460 Category 6A (10 GBs) communications cables.

Figure #8: EZ-Path Modular Floor Grid System


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A vertical cable runway support structure shall be installed on the wall below the floor penetration to support cables routed down from the EZ-Path Modular Floor Grid to the wall-mounted plywood backboard (horizontally mounted uni-strut at 24” spacing).

Sleeves/Conduits

The size and number of sleeves/conduits for building backbone riser pathways depends on the net assignable floor space served by the backbone system.

• A minimum of four (4) - 4” diameter sleeves/conduits are required between the MTR and the TR on the floor above and between succeeding TR’s above.

• A minimum of one (1) - 4” diameter sleeve/conduit is required between the TR on the uppermost floor and the roof of the building. The conduit shall terminate in a NEMA rated weatherproof housing, or an industry standard weather-head. The size and type of the penetration to be determined by the UIT-FE.

Where vertical offsets are required in sleeves/conduits, the bend radius must be a minimum 10 times the internal diameter of the conduit (e.g. 4” diameter = minimum 40” radius).

Position sleeves/conduits adjacent to a wall on which the backbone cables can be supported and as near to the MTR/TR access door as possible.

Sleeves/conduits must not obstruct wall-terminating space. Sleeves/conduits shall extend a minimum of 4.0” above the finish floor level. Sleeves/conduits shall extend down to within 6” of the top of wall-mounted plywood

backboards in the MTR/TR. Sleeves/conduits shall be equipped with ground bushings and bonded to ground.

Horizontal Conduit (EFS to MTR, MTR to TR, TR to TR):

The size and number of conduits for horizontal building backbone pathways depends on the net assignable floor space served by the backbone system.

• A minimum of four (4) - 4” diameter conduits are required between the EFS and the MTR (equivalent cable tray may also be utilized).


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• A minimum of four (4) - 4” diameter conduits are required between the MTR and other TR(s) on the same floor (equivalent cable tray may also be utilized).

Interconnect multiple TR’s on the same floor (separate vertical riser system), with a minimum of two (2) - 4” diameter conduit (equivalent cable tray may also be utilized).

Where horizontal offsets are required in conduits, the bend radius of conduits must be a minimum 10 times the internal diameter of the conduit (e.g. 4” diameter = minimum 40” radius).

Conduits shall be equipped with ground bushings and bonded to ground.

HORIZONTAL PATHWAYS: General: Horizontal pathways distribute, support, and provide access to horizontal cables between the MTR/TR and TSO.

The horizontal pathway system must be designed to handle all types of telecommunications cable (e.g., telephone, data, video, and building automation system [BAS]). The type and size of the pathway must consider the following:

The quantity and size of cables that the pathway is intended to house. Growth of the area served over the planning cycle. Upgrades and changes in cabling technology, e.g. CAT 6A (10 GBs) or Fiber-To-The-Desk.

The most common horizontal pathway systems used are: Cable tray system installed on each floor for main and branch backbone pathways from each

MTR/TR to multiple TSO’s locations on the floor area served. Individual conduits may be installed from the main or branch cable trays to individual TSO outlets. J-Hooks may be installed, in accessible ceiling areas, from the main or branch cable trays to

multiple and individual TSO wall conduits/outlets. In-wall “Ring and String” construction, from accessible ceiling to a wall-mounted TSO outlet is

limited to open wall space that does not contain insulation. The size requirements for horizontal pathways depend on the following considerations:

Net assignable floor space served by the pathway. Maximum occupant density (floor space required per individual work area). Cable density (number of horizontal cables planned per individual work area). Cable diameters. Pathway capacity (requires that fill factor be taken into account). Cabling requirements for other cabling systems.

Cable Trays:

Cable trays are the preferred horizontal pathway system for the main feeder sections (from the TR to floor areas serving multiple TSO locations).

Cable tray size and capacity will be determined by the amount and type of cable installed, the static load capacity of the tray, and the length of the support span. Note: Cable tray systems should be designed with 100 percent spare capacity to accommodate for growth and future technology media upgrades.


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Acceptable types of cable trays are;

• Wire Basket Tray (least installed cost with optimum heat dissipation for POE cables)

‘Whalebone’ or ‘Snake-Tray’ types are NOT acceptable.

• Ladder Trough @ max. 6” rung spacing (optimum heat dissipation for POE cables)

• Ventilated Trough @ max. 6” rung spacing (cables not visible from below)

NEC Section 392.9 defines cable tray capacity for communications cables as follow:

• NEC 392.9 (B) covers only multi-conductor control and/or signal cables in a ladder or ventilated trough cable tray. The sum of the cross-sectional areas of the cables in a ladder or ventilated trough cable tray having a usable inside depth of 6 inches or less must not exceed 50 percent of the internal cross-sectional area of the cable tray. A 6-inch-deep by 12-inch-wide tray would have an internal cross-sectional area of 72 square inches and the cable fill could not exceed 50 percent or 36 square inches.

• NEC Section 392.9(D) covers multi-conductor control or signal cables in a solid-bottom cable tray. With a solid-bottom tray, the sum of the cross-sectional areas of the cables in the cable tray, with a usable inside depth of 6 inches or less, must not exceed 40 percent of the internal cross-sectional area of the cable tray. A 6-inch-deep by 12-inch-wide tray would have an internal cross-sectional area of 72 square inches and the cable fill could not exceed 40 percent or 29 square inches.

A General Cable Tray Sizing Guideline for TSO’s wired with: • Category 6 (1 GBs) UTP cable, 2-strand fiber cable, and/or RG-6 coaxial cables is based

on providing 1.0 volumetric square inch of space, in the cable tray, for each 100 square feet of net assignable floor space or each identified TSO location.

• Category 6A (10 GBs) UTP cable, 2-strand fiber cable, and/or RG-6 coaxial cables is based on providing 2.0 volumetric square inch of space, in the cable tray, for each 100 square feet of net assignable floor space or each identified TSO location.

Cable tray installation shall comply with the Seismic Zone 4 requirements of the California Code of Regulations, Title 24.

The minimum cable tray dimensions shall be six inches (6”) in width by 2”, 4” or 6” load depth inches.

The path for the cable tray shall be clear of obstructions, such as HVAC ducts, large pipes and structural beams within the building.

Place cable trays above drop ceilings in corridors. Do not place them above offices or inaccessible spaces.

There must be at least 12 inches of vertical clearance from the top of the cable tray to the ceiling or other above obstructions. At cable tray junctions, intersections, grade changes, and entrances into the MTR/TR, the minimum vertical clearance shall be 24”. There shall be 12”-18” clearance on both sides of the tray. If the cable tray is wall mounted or otherwise obstructed and there is no clearance on one side, then minimum clearance on the clear side should be 24”.

There must be at least 4 inches of vertical space from the bottom of the cable tray to a suspended ceiling tile.


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Access ceiling panels (24” x 24”) shall be installed at maximum 10-foot intervals if cable tray is passing though a hard-lid ceiling. The panels should be within 12” from the cable tray. The access panels shall not be mounted directly underneath the cable tray. Note: In lieu of cable tray thru hard-cap ceilings, 4” diameter metal conduits may be installed. The number of 4" conduits required depends on the number of cables and size of tray. Use 40% fill ratio to determine the number of 4" conduits. Two additional spare conduits should be installed to accommodate future cable placement.

It is desirable that the horizontal cable tray system originates from the MTR/TR. If it does not originate from the MTR/TR then 4" conduits may be used to connect from the MTR/TR to the cable tray. The number of 4" conduits required depends on the number of cables and size of tray. Use 40% fill ratio to determine the number of 4" conduits. A minimum of two (2) additional spare conduits should be installed to accommodate future cable placement.

The end of each cable tray shall enter the MTR/TR 6” and the end shall be equipped with a cable drop out fittings to support cables that transition down to the cable runway system located above the equipment rack line-ups. Minimum entrance height is 8’-6” AFF.

All cable tray penetrations through firewalls shall allow cable installers to fire-stop around the

cables after they are installed. Tray-based mechanical fire-stop systems shall be used when a cable tray penetrates a fire barrier. All fire-stopping installations shall be labeled in accordance with ANSI/TIA/EIA 606-A.

Alternatively, E-Z Path Fire Rated Pathways or conduit sleeves may be used through the penetrations. The number of sleeves required depends on the number of cables and size of tray. Use 50% fill ratio to determine the number of sleeves. Two additional spare sleeves should be installed to accommodate future cable placement. The number of E-Z Path Fire Rated Pathways depends on the product model.


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If the cable tray must pass through a seismic joint then it may be installed in one of three ways:

• If the depth of the seismic joint is 12" or less, break the cable tray run into two sections, and leave the 12-inch (or less) gap between them within the seismic joint.

• If the joint is deeper than 12", break the cable tray run into two sections, and overlap the ends vertically by no more than 4" within the joint with at least 4" vertical clearance between them, or,

• Break the conduit run into two sections, and use 6" flexible conduits between them to span the depth of the seismic joint. The number of conduits depends on number of cables and size of cable tray plus one spare for future cable pulls. Use 50% fill ratio to determine the number of 6" flexible conduits. (Note: Use of flexible conduit must be avoided as much as possible, but if it is really necessary to use then either de-rate the capacity of the conduit or specify one that is two trade-sizes larger)

All metallic cable trays must be grounded but should not be used as grounding conductor for equipment.

All communications conduits shall stub to the top side rail of cable tray and be mechanically fastened. EMT conduit shall have a box connection fitting with a bushing installed at the cable tray to prevent damage to the wiring.

The cable tray shall be supported at spacing according to the load and span per industry and manufacturers standards as well as all local, state and federal codes for a proper installation.

The cable tray system shall include all appropriate fittings such as; elbows, reducers, crossovers, tees, bends, etc.

Based on design use, accessories may include some, all or none of the following: covers, hold-down devises, dropouts, conduit adapters, dividers, etc.

Conduit (TSO Distribution):

Conduit can be installed in walls, floors, columns, or ceilings of a building for home-run cable from the TSO to the TR. Conduit can also be run from the TSO to an accessible ceiling area and then routed to the TR via other approved pathway structures (J-Hooks, cable tray, etc.).

Suitable horizontal communication conduit is: • Rigid Metallic Conduit • Electrical Metal Tubing (E.M.T.) • Flexible conduit is NOT RECOMMENDED. The UIT-FE must approve in writing any

location where flexible conduit is proposed. At these locations, if approved, the flexible conduit must be one trade-size larger than the original rigid conduit specified and must be strapped every 2-foot.

Nominal outside diameter cable measurements for commonly used plenum rated TSO cables:

• Category 6 4-pair, 23 AWG, UTP cable = .23 inches OD. • Category 6A 4-pair, 23 AWG, UTP cable = .31 inches OD. • Commscope Coaxial RG-6 cable = .23 inches OD. • Corning 2-Fiber cable = .20 inches OD.


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The following chart lists the typical TSO conduit sizes used at Stanford and the maximum number of cables that may be installed in the conduit. The chart is based on the maximum number of cables permitted in conduit under the National Electric Code and is calculated on the area of the cables with 40% of the conduit filled. For conduit runs of 50 to 100 feet, the installed number should be reduced by 15%, or use the next size larger conduit. Each 90° conduit bend may be estimated as equal to the friction of 30 feet of straight level conduit. If more than two 90° bends are to be used in the conduit run, or if the run is to be over 100 feet in length, insert a pull box.

CABLE TYPE (PLENUM RATED)

CABLE OD

MAXIMUM NUMBER OF CABLES IN CONDUIT

1.0” CONDUIT

1.25” CONDUIT

1.50” CONDUIT

2.0” CONDUIT

Category 6 .23 8 14 19 38

Category 6A .31 4 8 10 17

Coaxial RG-6 (Commscope) .23 8 14 19 32

MIC 2-fiber (Corning) .21 10 17 23 38

Note: To determine the conduit size for a TSO containing combinations of the above cables please consult the UIT-FE.

The minimum conduit sizes to serve an individual TSO outlet box is as follows: • 1.0” Conduit: TSO with Category 6 (1 GBs) cables, Coaxial RG-6 cable, MIC2-fiber

cables, or any combination of these cable types. • 1.25” Conduit: TSO with Category 6A (10 GBs) cables, Coaxial RG-6 cable, MIC 2-fiber

cables or any combination of these cable types. • NO conduit smaller than one (1) inch is acceptable.

Communication conduit shall not contain more than two (2) ninety-degree bends (total 180 degrees of bend) between pull points or pull boxes.

Conduit bends shall be designed as follows: • Factory manufactured bends shall be used where a change in direction is required. • All bends in conduit size 2.0” or less shall be at least six (6) times the internal diameter of

the conduit. Larger than 2.0” shall be at least ten (10) times the diameter of the conduit. • Telecommunications conduit bodies (LB’s) may only be used with prior UIT-FE approval. • Electrical conduit bodies (LB’s) shall not be used in any telecommunications applications.

Communications conduit shall not exceed a continuous length of 100 feet. If the conduit runs are greater than 100 feet, then pull boxes shall be installed. The location(s) of these pull boxes must be shown on the construction drawings and labeled.

No more than two (2) TSO locations may be daisy-chained together by conduit, and only when absolutely necessary, and pre-approved by the UIT-FE. Where applicable, the conduit to the first box must be upsized by 50% unless otherwise specified.

It is recommended that total conduit runs be kept to 150 feet or less (including conduit sections containing pull thru boxes).

All communications conduit shall be run in the most direct route possible but parallel to building lines.


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All communications conduit shall be bonded to ground on one or both ends, in accordance with requirements.

All conduit runs shall have a plastic or nylon pull line installed with a minimum test rating of 200 lbs.

Metallic conduit shall not come in contact with reinforcing rods or other conductive material in the building walls and ceilings.

Non-metallic orange bushings shall be installed at all terminations, both freestanding and within boxes, enclosures, and cabinets.

All communication conduits, pull boxes, cans and enclosures must be labeled with their origination and termination points.

All communication conduits, pull boxes, cans and enclosures must be placed in accessible spaces.

Minimum pull box requirements are shown below and are based on having one conduit each in opposite ends of the box (length):

Maximum Trade Size of Conduit

Size of Box For Each Add. Conduit increase width Width Length Depth

1” 4” 16” 3” 2” 1-1/4” 6” 20” 3” 3” 1-1/2” 6” 27” 4” 4”

2” 8” 36” 4” 5” 2-1/2” 10” 42” 5” 6”

3” 12” 48” 5” 6” 3-1/2” 12” 54” 6” 6”

4” 15” 60” 8” 8”

J- Hooks:

J-Hook type cable support devices can have a detrimental effect on transmission performance of higher performance cabling systems. As such, cable trays are the preferred horizontal pathway system for the main feeder sections (from the TR to floor areas serving multiple TSO locations).

The UIT-FE must pre-approve the use of use of J-Hooks on a per project basis. Use will be determined based on the number and type of cables, location, path, and distance specifications.

NOTE: For CAT 6A (10 GBs) cables, a wide-base design J-hook with smooth, beveled edges shall be used to provide support and a large bending radius, i.e. ERICO CADDY CAT LINKS or equivalent.

If approved for use, the minimum size of J-hooks shall be 2” in diameter.

If approved for use, J-hooks shall be placed a maximum of 48” on center.

J-Hooks shall be accessible from below and have a minimum 12” of clearance above and on each side of the cable run.

J-Hook supported cables must be installed with at least 3 inches of clear vertical space above the ceiling tiles and support channels (T-bars) at mid-span.


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Surface Mounted Raceway (SMR):

In most designs the front panel is removable and TSO’s may be placed at any point along the run and may be moved or added after initial installation.

Wiremold Series 4000 or 6000 are the most typical metallic style SMR used. Consult the UIT-FE for project specific design and alternate sizes.

• TSO’s wired with Category 6 (1 GBs) cable can be installed in Wiremold Series 4000 SMR (1-3/4” depth). If a Corning 2-fiber cable is specified, install a 1.0-inch extension plate.

• TSO’s wired with Category 6A (10 GBs) cable shall be installed in Wiremold Series 6000 SMR (3-9/16” depth).

A double-gang pull box shall be placed in the wall at each end of an SMR section and at 10-foot intervals along the length of the SMR run.

• TSO’s wired with Category 6 (1 GBs) cable must have a minimum 1-1/4” conduit either homerun to the TR or to the cable tray.

• Buildings wired with Category 6A (10 GBs) cables must have a 2.0” conduit to each box in the raceway (SMR ends and 10-foot intervals). An alternative is a box and 1-1/4” conduit at 5-feet intervals

Electrical power and telecommunications services must be run in separate compartments and must comply with applicable electrical codes.

The electrical and communications outlets must be offset in the raceway. The metallic barrier between electrical and telecommunications must be bonded to ground. The assignment of joint raceway compartments for telecommunications and electrical cabling

must be consistent throughout the building. A double-gang pull box shall be placed in the wall at each end of an SMR section and at 10-foot

intervals along the length of the SMR run. Each box must have a minimum 1-1/4” conduit either homerun to the TR or to the cable tray. Buildings wired with Category 6A (10 GBs) cables must have a 2.0” conduit to each box in the race way (SMR ends and 10-foot intervals). An alternative is a box and 1-1/4” conduit at 5-feet intervals.

As joint-use SMR allows for a one-gang outlet plate, two side-by-side one-gang outlet plates shall be installed for TSO’s requiring more than 6-ports.

TSO’s wired with Category 6 (1 GBs) cable can be installed in Wiremold Series 4000 SMR (1-3/4” depth). If a Corning 2-fiber cable is specified, install a 1.0-inch extension plate.

TSO’s wired with Category 6A (10 GBs) cable shall be installed in Wiremold Series 6000 SMR (3-9/16” depth).

Panduit LD-10 SMR and surface mounted outlet boxes may be specified for individual TSO’s. Ring & String (Prohibited in rated, insulated or inaccessible walls): Ring & String can be used in lieu of conduit, in non-rated or un-insulated wall sections only, from the TSO location to the thru the top wall plate into accessible ceiling space.

Installation consists of attaching an outlet box extension ring (1/2” or 5/8” drywall, wallboard) to a wall stud; placing and securing nylon pull string (200 lbs test) from the extension ring to a tie off point and the top of the wall plate and accessible ceiling space.

Wall-mounted TSO outlet: install a dual gang extension ring (1/2” or 5/8”) and pull line. Wall-Phone TSO outlet: install a single gang extension ring (1/2” or 5/8”) and pull line.


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In metal stud construction, a 1 and 1/16” diameter orange grommet shall be installed in the top metal wall plate. The pull string shall be threaded through the orange grommet.

Fire-Rated Barrier Penetrations:

Cable Tray: Where fire or smoke barriers are penetrated by cable tray, the cable tray shall be fire stopped to maintain the rating of the barrier. The UIT-FE shall pre-approve the size, quantity and location(s) of the pathways. Alternatively, the E-Z Path Fire Rated Pathways by STI, Inc. or metallic conduit sleeves may be used. See Horizontal Pathways section above.

Cable Risers - E-Z Path Fire Rated Pathway or metallic conduit sleeves • Floor and wall penetrations up to 8” thick: The E-Z Path Fire Rated Pathway by STI, Inc.

shall be used. The E-Z Path provides a 4-hour fire-stopping rating. See Building Backbone and Horizontal Pathways sections above.

• Floor and wall penetrations more than 8” thick: Metallic conduit sleeves shall be used (minimum 4” diameter). See Building Backbone and Horizontal Pathways sections above.

The number, size and configuration of E-Z Pathway devices or the number of 4” diameter metallic sleeves/conduits depends on the number of cables to be installed. Use 50% fill ratio to determine the number of metallic sleeves/conduits required. Use E-Z Pathways cable capacity charts for the cable capacity for the appropriate model device. See Building Backbone and Horizontal Pathways sections above.

TELECOMMUNICATION SERVICE OUTLETS (TSO)

General: The architect shall ensure that TSO locations are accurately shown on the electrical drawings with triangle shaped telecommunication symbols. TSO’s may be mounted on walls, floors, ceilings, cable trays, open office furniture, control cabinets, etc. Use appropriate triangle symbols to differentiate each TSO location.

Use symbol notations to identify TSO’s that have special uses e.g. Wireless Access Point (WAP), Fire Alarm Control System (FACS), Energy Management Control System (EMCS), Elevator Phone (EP), Security Control System (SCS), etc.

The following are the standard TSO types deployed at Stanford using Category 6 Universal Twisted Pair (UTP) cable containing 4-pair, 23 AWG copper cable. The transmission rate for Category 6 UTP cable is 1 Gigabit per second (1 GBs) to 295 cable feet. The nominal outside diameter measurement of a typical Category 6 (1 GBs), plenum-rated cable is .23 inches (0.0415 cross-sectional area).

Standard office TSO: equipped with two (2) 4-pair Category 6 cable ports to provide for universal voice and data communications.

Standard conference TSO: equipped with four (4) 4-pair Category 6 ports to provide for universal voice and data service, one (1) duplex fiber port for data and one (1) RG-6 coaxial cable port for CATV service.

Standard wall phone TSO: equipped with one (1) 4-pair Category 6 cable ports to provide for voice service.

Wireless Access Point TSO: equipped with two (2) 4-pair Category 6A (intermittent shield) cable ports.

Fire Alarm Control TSO: equipped with two (2) 4-pair Category 6 cable ports. Usually direct terminated in the Fire control panel in the Fire equipment space.

Energy Management Control System TSO: equipped with two (2) 4-pair Category 6 cable ports. Usually direct terminated in the EMCS control panel in the EMCS equipment space.

Elevator Phone TSO: Equipped with one (1) 4-pair Category 6 cable port. Usually direct terminated in an elevator control panel in the elevator mechanical room.


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Security Control System TSO: Equipped with one or more 4-pair Category 6 cable port and/or one or more 2-fiber cables.

Upon client request and funding, in lieu of Category 6 (1 GBs) UTP cables, SU will provide, install and support Category 6A (10 GBs) UTP cables as follows:

Category 6A Universal Twisted Pair (UTP) cable containing 4-pair, 23 AWG copper cable. The transmission rate for Category 6A UTP cable is 10 Gigabits per second (10 GBs) to 295 cable feet. The nominal outside diameter measurement of a typical Category 6A (10 GBs), plenum-rated cable is .31 inches (0.0754 cross-sectional area).

Upon Building Client - Facility Coordinator request and Project funding, UIT Facilities Engineering will provide, install and support a Fiber-To-The Desk (FTTD) technology consisting of 50.0 micron (OM3 / OM4) multi-mode or 9 micron (OS2) single mode fiber cable(s).

Wall/Ceiling Mounted TSO Outlet Boxes

Buildings that specify CAT 6 (1 GBs) cable in standard office and standard conference outlets require a square box, 4-11/16" x 4-11/16" x 2-11/16" deep (Steel City Part # 72171 or equivalent), with a minimum 5/8” depth double-gang plaster ring (Steel City Part # 72-C-14-5/8 or equivalent). A minimum of one 1.0” conduit shall be installed from the outlet box to accessible ceiling space, cable tray or home-run to the TR.

• Mount flush in the wall at same height as the convenience electrical outlet (18" AFF). A convenience electrical outlet should be located within 3 feet of the TSO.

• Mount flush in the ceiling within 3 feet of and electrical outlet or in a joint-use fixture.

• The following diagram depicts a standard conference wall TSO equipped with four (4) 4-pair Category 6 (1 GBs) ports to provide for universal voice and data services, one (1) duplex 50.0 micron fiber port for data and one (1) RG-6 coaxial cable port for CATV service.

Buildings that specify CAT 6A (10 GBs) cable in standard office and standard conference outlets require a 5" x 5" x 2-7/8" deep, equipped with 1” and 1-1/4” knockouts on 3 sides, i.e. RANDL Industries, Inc., Deep Telecommunications Bracket Outlet Box, Part # TB-55057. The outlet box shall be equipped with a minimum 5/8” depth double-gang extension ring (mud-ring), i.e. RANDL Industries Inc. Part # L-52G058. A minimum of one 1-1/4” conduit shall be installed from the outlet box to accessible ceiling space, cable tray or home-run to the TR.

• The following diagram depicts a standard conference wall TSO equipped with four (4) 4-pair Category 6A (10 GBs) ports to provide for universal voice and data services, one (1) duplex 50.0 micron fiber port for data and one (1) RG-6 coaxial cable port for CATV service.


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Standard wall phone outlets require a require a square box, 4-11/16" x 4-11/16" x 2-1/8" deep, with a minimum 5/8” depth single-gang extension ring (mud-ring). Mount flush in the wall at same height as the electrical light switch (48" AFF). A minimum of one 1.0” conduit shall be installed from the outlet box to accessible ceiling space, cable tray or home-run to the TR.

Wireless Access Point (WAP) TSO’s requires that an UIT Network Specialist determine the most appropriate location, transceiver type, and mounting hardware.

• The WAP transceiver unit may be located above the T-Bar ceiling on a T-Bar hanger bracket or installed on the side of a cable tray.

• The WAP may be wall-mounted 4”- 6” below the ceiling in a single-gang outlet box or hard-cap ceiling mounted in a single-gang outlet. A minimum of one 1.0” conduit shall be installed from the outlet box to accessible ceiling space, cable tray or home-run to the TR.

• UIT will install the access point transceivers after the building TCO is received. The current interior use wireless access point transceiver/antenna has an 8"X10" off-white decorative plastic cover that protrudes approximately four inches from the wall or ceiling. When activated, small indicator lights "LED’s" are visible from the bottom of the access point transceiver.

• Exterior Building WAP’s may be mounted on exterior walls, light posts, etc. If the Transceiver and antenna is jointly located in a weather exposed location, it must be installed in a NEMA rated weather-proof housing. If the transceiver is installed separate from the antenna, in a NEMA rated weather-proof housing, the antenna must be located within 50 cable feet of the transceiver enclosure.

Floor Mounted TSO Outlet Boxes Floor mounted TSO boxes must have 1-1/4" knockouts for communications conduit access and must accommodate open insert faceplates. The floor outlet boxes should jointly contain 120VAC / 20AMP electrical power or an electrical floor outlet box shall be located immediately adjacent to the floor box.

Approved floor outlet boxes are as follows:

Wiremold’s RFB4 Floor Mount Box (joint-use) equipped with 2-RFB4-LDP Communication Brackets and with open system unloaded inserts. This product is recommended when conduits enter the TSO from the same floor.

• Floor boxes housing more than four (4) CAT 6A (10 GBs) cables/ports requires use of both communications compartments. A 1-1/4” conduit is required to each of the two communications compartments.

FSR’s (FSR, Inc.) Model Numbers FL-500P, FL-600P and FL-710 are recommended for use in conference rooms, auditoriums, classrooms, etc. with high port-count requirements or where it may be necessary to pass cables thru the box.


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• Floor boxes housing more than four (4) CAT 6A (10 GBs) cables/ports or additional video or fiber ports, requires that multiple 1-1/4” conduits be installed into each communications compartment.

Wiremold’s RC4ATC Poke-Thru Device (joint-use) equipped with open system unloaded inserts. This product is recommended when power and communication cables enter the outlet from the floor below (4” core).

• The RC4ATC Poke-Thru Device (joint-use) is limited to a maximum of 4 communications ports containing CAT 6 (1 GBs), CATV, or fiber. The number of cables/ports is also limited by the ¾” conduit connections. This device should not be used for CAT 6A (10 GBs) cables.

• The following diagram depicts a RC4ATC Poke-Thru Device (joint-use) TSO, equipped with four (4) 4-pair Category 6 (1 GBs) ports, to provide for universal voice and data services.

Wiremold’s AMD8 Series Poke-Thru Devices equipped with open system unloaded inserts. This product is recommended for communications-only locations where cables enter the outlet from the floor below (4” core). A separate electrical poke-thru device must be located adjacent to the AMD8 Poke-Thru Device to provide power for connected communication devices.

• The AMD8 Series Poke-Thru Device is limited to a maximum of 8 communications ports containing CAT 6 (1 GBs), CAT 6A (10 GBs) CATV, or fiber. The number of CAT 6A (10 GBs) cables/ports may be limited by the ¾” and 1-1/4” conduit connections.

Wiremold’s Evolution 6AT Series Poke-Thru Device (joint-use) equipped with open system unloaded inserts. This product is recommended when power, communication and audio-visual cables enter the outlet from the floor below (6’ core).

• The Evolution 6AT Series Poke-Thru Device (joint-use) is limited to a maximum of 8 communications ports containing CAT 6, CAT 6A, CATV, fiber or audio-visual. The number of cables/ports may also be limited by the 1-1/4” conduit connection.

Wiremold’s Evolution 8AT Series Poke-Thru Device (joint-use) equipped with open system unloaded inserts. This product is recommended when power, communication and audio-visual cables enter the outlet from the floor below (8’ core).

• The Evolution 8AT Series Poke-Thru Device (joint-use) is limited to a maximum of 8 communications ports containing CAT 6 (1 GBs), CATV, fiber or audio-visual. A larger number of ports may be possible if Architectural Adapter Plates (AAP) or Mini Architectural Adapter Plates (MAAP) are utilized for audio-visual requirements.


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Surface Mounted Raceway TSO’s:

Surface mount raceway TSO’s wired with Category 6 (1 GBs) cable can be installed in Wiremold Series 4000 SMR (1-3/4” depth). If a Corning 2-fiber cable is specified, install a 1.0-inch extension plate.

The following diagram depicts a joint use surface mounted raceway TSO, equipped with four (4) 4-pair Category 6 (1 GBs @ 250 MHz) ports, to provide for universal voice and data services.

Surface mount raceway TSO’s wired with Category 6A (10 GBs) cable shall be installed in Wiremold Series 6000 SMR (3-9/16” depth).

ACCESS CONTROL ENTERPRISE SYSTEM (ACES) General: UIT operates the Campus Card System, which utilizes magnetic or proximity ID cards and card readers to control access to a variety of campus facilities and services. Stanford currently deploys the Lenel Systems Access Control Enterprise System (ACES).

In conformance with SU Building Access/Security Policy, the Project’s Project Manager and the Building Client – Facility Coordinator, along with the UIT-FE, shall determine the doors to be equipped with the ACES devices in new building and renovation projects. The Architect shall incorporate the selected ACES – Card Access into the design of the building e.g. type and style of door, door hardware selection, location of supporting ACES infrastructure and pathways, etc. as detailed in the UIT Facility Design Guideline Section Number 28 10 00, Access Control System –current issue.

END OF DOCUMENT