This standard applies to all Owner locations and includes the Voice and Corporate Network.

Transcription

1 Element Z Owner Standards and Other Requirements ODG General Design Requirements Z2045 IS Network Services & Telecommunications Premises Distribution System Standards Part 1. General Information...1 Part 2. Environmental and Installation Requirements...3 Part 3. Installation Considerations...10 Part 4. Pathways, Cable Trays, Wireways and Conduit...17 Part 5. Racks, Cabinets and Equipment Layout...22 Part 6. Equipment Rooms...23 Part 7. Regional and Area Office Communications...35 Part 8. Miscellaneous...38 Part 9. Wireless Networking...39 Part 10. Appendices...40 Part 1. General Information BACKGROUND The company-wide standards for structured premise wiring, outlined in this document, are designed to bring all of The University of Texas M. D. Anderson Cancer Center (Owner) facilities into compliance with industry-wide standards and are based on the latest EIA/TIA Building Telecommunications Wiring Standards for commercial buildings. Its goal is to cost effectively accommodate future generations of higher-speed networks while maintaining complete compatibility with the current data and voice technology. SCOPE This standard applies to all Owner locations and includes the Voice and Corporate Network. ADDITIONS, CHANGES, TESTING, AND ACCEPTANCE 1. The Owner s Network Services and Telecommunications groups will be the first point of contact for questions about adding, changing, testing, and accepting new materials and suppliers. All decisions will be based on quality, performance, price, availability, and business need. Page 1 of 42

2 SPECIAL CASES AND EXCEPTIONS 1. Special cases and exceptions will be reviewed on a case-by-case basis. The Network Services and Telecommunications groups will be the first point of contact for questions about non-standard communications cable installations. All decisions will be based on the customer s requirements and business needs. 2. Every effort has been made to ensure that these recommendations are technically accurate and provide necessary site and personal safety. However, local conditions may require additional professional investigations, modifications, or safeguards to meet site, equipment, environmental, safety, or region-specific requirements. 3. This information does not replace international, federal, state, local, or other applicable codes, laws, or regulations. Specific applications may contain variables that are beyond the control of, or the scope of, this document. As a result it cannot be warranted that the application of this information will produce the technical result or safety originally intended. RELATED CODES AND STANDARDS 1. The following codes and standards were used in the development of this document. Standards application guidelines established by MD Anderson Facilities and IT departments. Where applicable, refer to the current edition and any related addendums: a. ANSI/EIA/TIA-568-B Commercial Building Telecommunications Cabling Standard b. ANSI/EIA/TIA-568-B.2-1 Transmission Performance Specifications for 4- pair 100 Ohm Category 6 Cabling c. ANSI/EIA/TIA-569-A Commercial Building Standard for Telecommunications Pathways and Spaces d. ANSI/EIA/TIA-598 Color coding of Optical Fiber Cables e. ANSI/EIA/TIA-606 Administration Standard for the Telecommunications Infrastructure of Commercial Buildings f. ANSI J-STD-607-A Grounding, Bonding and Electrical Protection (formerly ANSI/EIA/TIA-607) g. ANSI/EIA/TIA-758 Customer Owned Outside Plant h. TIA/EIA TSB67 Transmission Performance Specifications for Field Testing UTP i. TIA/EIA TSB72 Centralized Optical Fiber Cabling Guidelines j. TIA/EIA TSB75 Additional Horizontal cabling Practices for Open Offices k. BICSI Telecommunications Distribution Methods Manual, Current Edition l. American National Standards Institute (ANSI) m. Building Industry Consulting Service International (BICSI) publications: n. Telecommunications Distribution Methods Manual o. Telecommunications Cabling Installation Manual p. Customer Owned Outside Plant Design Manual q. Institute of Electrical and Electronic Engineers (IEEE) r. National Electrical Code (NEC) Page 2 of 42

3 s. National Fire Protection Association (NFPA) t. Underwriters Laboratories (UL) Standards application guidelines established by MD Anderson Facilities and IT departments. Part 2. Environmental and Installation Requirements ENVIRONMENTAL REQUIREMENTS 1. General - This section provides information on the floor and wall space required for system equipment and associated peripheral equipment installed in equipment rooms. Also included are Specifications for temperature, humidity, air purity, and lighting levels. 2. Floor Loading - These requirements apply to any physical surface on which the equipment is placed. Security a. Floor loading of equipment cabinets varies from 50 to 250 lbf/sqft. Because of this range - and to accommodate the widest variety of equipment over the life of the building - the floor rating under distributed loading must be greater than 100 lbf/sqft and the rating for concentrated loading must be greater than 2000 lbf/sqft in areas that will support telecommunications equipment. Check the manufacturer's specifications to ensure a compatible floor rating before installation. b. Specific project requirements may require unique support. Local codes may dictate design (earthquake issues, etc.). 1. Access to the room must be through secured doors/with UTPD Security card readers that allow the passage of wide equipment. The minimum door size will be 36 inches, and it should open toward the outside of the room. Automatic closer and self-latching locks should also be provided. 2. All communications rooms must occupy a sector of the building, which does not touch an outside wall, unless the outside wall is structural concrete, CMU, or other impermeable structural material capable of withstanding known environmental and civil hazards. It must be secured at all times by a locking mechanism whose key is made available only to appropriate personnel. All IS related communications rooms shall have a UTPD Security card reader installed at the entrance door(s). Every effort should be made to see that the main communication room is not located on the ground floor or below. Page 3 of 42

4 3. For convenience of use during work performed in the server/communications room, as well as for security reasons, an digital single line telephone, capable of outgoing public network calling, must be installed in the main communications room. Telecom rooms that contain an expansion PBX should also have an analog, (DRS) telephone line installed. This telephone must work during PBX, and power outages. Fire Protection 1. All penetrations through fire-rated walls and floors must be properly sealed with approved materials or devices to block the spread of fire, smoke, toxic gases, and fluids in accordance with local building codes. 2. The communications room must have an approved fire-extinguishing system and alarm system. No flammable materials can be stored in the communications room. Material installation debris, garbage, and/or other disposable materials must be removed from the communications room daily, and as soon as the work has been completed. A CO2 extinguisher must be provided for electronic equipment. Noise and Electromagnetic Interference (EMI) 1. In most cases, noise is introduced into the system through trunk or station cables, or both. However, electromagnetic fields near the system control equipment may also cause noise in the system. Therefore, the system and cable runs should not be placed in areas where high electromagnetic field strength exists. Radio transmitters (AM or FM), television stations, induction heaters, motors (with commutators) of 0.25 horsepower (187 watts) or greater, and similar equipment are leading causes of interference. Small tools with universal motors are generally not a problem when they operate on separate power lines. Motors without commutators, whether synchronous or asynchronous, generally do not cause interference. Field strengths below 1.0 volt per meter are unlikely to cause interference. A tunable meter such as the Model R-70 meter manufactured by Electro-Metrics Division can measure these weak fields. 2. All communications cable and related equipment should be placed at least 4 feet away from equipment such as elevator motors, air conditioning units, large FAX machines, copiers, and transformers that could interfere with the electrical signal and cause electromagnetic radiation. Communications cables and pathways should be provided a clearance of at least 1 foot from fluorescent lighting and conduit or cables used for power distribution. In addition, pathways should cross perpendicular to fluorescent lighting and electrical power cables or conduit. EIA/TIA 568-B must be complied with in order to minimize any problems. Page 4 of 42

5 HVAC 1. Temperature and Humidity a. The system equipment should be installed in a well-ventilated,airconditioned (HVAC) area between 64 degrees F and 75 degrees F with relative humidity between 30 and 55 percent. Experience has shown that system board failures will happen with a room ambient temperature greater than 78 degrees F. Therefore, room design temperature must be for 75 degrees F maximum, with 45 percent to 55 percent relative humidity, for 24 hour X 365 day cooling. b. Heat dissipation from the voice communications equipment is approximately 15-20,000 btu/hour. Added equipment can total another 20-30,000 btu/hour. Rack-mounted servers can generate approximately 12,000 btu/hour for a fully loaded rack. If a more detailed design is required, refer to the Network Services / Telecommunications groups for specific details. c. This standard stipulates that all communications rooms will have air conditioning 24 hours per day and 365 days per year. This condition must be maintained even though the building air-conditioning system may be routinely disabled at night and/or weekends. Appropriate air flow and air return must be provided within the communications room, as well as a means to maintain adequate humidity, as well as to automatically dispose of any condensate. 2. Air Purity ELECTRICAL a. The equipment should not be installed in an area where the air may be contaminated with any of the following: i) Excessive dust, lint, carbon particles, paper fiber contaminants, or metallic contaminants. ii) Corrosive gases, such as sulfur and chlorine. b. Special care shall be taken in the start-up phases of an office to insure that on-going construction does not contaminate installed communications/data equipment. National Electrical Code, Current Version 1. General - This section provides information on power, grounding, lightning protection, sneak current protection, standby power, and wiring requirements for voice system equipment and associated peripheral equipment installed in the equipment room. Page 5 of 42

6 2. Lighting - Proper 24-hour lighting fixtures, per company standards, must be installed to insure that personnel working in the room can see the equipment and labels in the equipment. All fixtures in the communications room shall be on Emergency power. The light intensity level is a minimum of 50 foot-candles at 3'- 0" AFF. 3. AC Power Requirements - Provide 120-volt (and where required, 208-volt) power as both normal power and UPS. UPS power may be via a stand-alone unit, a centralized UPS, or in combination with emergency generator backup (which is recommended). a. A centralized UPS is highly recommended for all new building construction, or whenever a full, or major, renovation of an existing building occurs. b. Each system cabinet along with the auxiliary cabinet requires a separate power outlet. These outlets must not be shared with other equipment, must not be under switch control, and should be located outside the cross-connect field (wire wall) area. Exact requirements vary from project to project and will be determined and coordinated with IT. c. Outlets located below raised floors should be located within 2 feet of the cabinet it serves. d. All LAN frames and cabinets that require power should have the minimum of a 20-amp surge protector, multiple outlets installed. e. All electrical requirements should be dedicated for the specific IT room, preferably via a dedicated electrical power panel(s) inside room. 4. Grounding - All racks, frames, cabinets, and miscellaneous equipment shall be grounded together using green, No. 6 insulated copper ground wire (low smoke, plenum rated, 6 AWG, 600V, UL Listed, AT&T # KS5482-L23FA, Type R2, 90C) (Acceptable alternate: low smoke, plenum rated, 6 AWG, 600V, UL Listed, Service Wire Company # THW-2, VW-1) so that all equipment, communications racks and frames are at the same ground potential. (A VOM measurement between any two points on racks and equipment cases in the communications room shall be less than 1.25 volts dc or ac potential.) Additional grounding/bonding shall be added to meet this specification. a. All approved grounds used must be bonded together to form a single grounding electrode system as required in Article 250 of the National Electrical Code. b. ANSI J-STD-607-A (BISCI TDMM, Chapter 10 Grounding, Bonding, and Electrical Protection) Page 6 of 42

7 5. Lightning Protection ANSI/NFPA 780 LABELING a. A coupled bonding conductor is tie-wrapped to all trunks. The coupled bonding conductor can be any one of the following: i) 10 AWG ground wire ii) Continuous cable sheath b. The coupled bonding conductor connects the cabinet single-point ground block and runs all the way to the approved ground located nearest the telephone company owned protector block at the building entrance facility. c. When an auxiliary cabinet is provided with multi-carrier cabinet system, a 6 AWG ground wire connects the system cabinet single-point ground block to the auxiliary cabinet ground block. It is recommended that the ground wire be routed as close as possible to the cables connecting the system cabinet and the auxiliary cabinet. d. If auxiliary equipment is not mounted in the auxiliary cabinet, then the power supply for this equipment must be plugged into one of the two convenience outlets located on the back of the multi-carrier cabinet to preserve ground integrity. The convenience outlet is fused at 5 amps. The dedicated Manager I terminal should be plugged into the other convenience outlet. e. Sneak Current Protection - Sneak fuses protect the building wiring and circuit packs from "foreign potential" by providing a current interruption capability. Sneak fuse panels are to be installed on the switch side of the network interface. All incoming and outgoing trunks and off-premises station lines pass through the sneak fuses. Sneak current protection is mandatory for installations in Canada. The sneak fuses must be CSA certified. Sneak current protection for Domestic sites should be included as a base bid alternate, with the communications contractor providing incoming sneak protection to meet local Telco standards. f. The National Electrical Code governs the placement of protection. 1. ANSI/TIA/EIA All labeling should be unique across the entire wiring infrastructure within a building and between buildings on a campus. Page 7 of 42

8 3. Labeling tags and markings should be permanent enough to last the life of the component to which it is attached. This can range from a few years for telecom equipment up to 50 years for parts of the building such as closets and pathways. Cables should be labeled at both ends and use the same alphanumeric identifiers with wrap-around labels with installing contractor s name. All new fiber optic aluminum interlocking armor (flex conduit) tight tube cable will be labeled with bright yellow tags every 15 feet along its route and at each end. ADA SPECIFICATIONS 1. A phone must be mounted 48 inches (to centerline) if the wheelchair access is beside the phone. 2. A phone must be mounted 42 inches AFF (to centerline) if the individual can reach out to the front of the wheelchair. 3. The minimum height for all wall mounted electrical and communications outlets is 18 inches to centerline of the device. OFFICE STANDARD 1. All new jacks will be a minimum of Category 5E (ANSI/TIA/EIA 568-B). Category 5E cabling will be terminated between a Category 5E jack located in the office area and on a wallfield in the IDF/MDF. Each office/cubicle will be provided with a minimum of two jacks. Specific project requirements may need more. Jack configuration, faceplate, mounting height and location are determined by Facilities drawings. 2. Voice and LAN jack colors are determined by the individual scope of each project. Typically, where Voice and LAN jacks are both fed from the communication frame, jacks and faceplates are white, and in modular furniture, jacks and faceplates are black. 3. Jacks that serve the same office/cubicle work area may be combined into one faceplate with a maximum of 6 jacks to a single-gang faceplate. 4. A list of preferred Category 5E and Category 6 cable, jacks, patch panels and patch cords can be found in Appendix B. NON-OFFICE INSTALLATIONS (LABS, WAREHOUSES, ETC.) 1. All new jacks will be a minimum of Category 5E (ANSI/TIA/EIA 568-B). Category 5E cabling will be terminated between a Category 5E jack and a wallfield in the IDF/MDF. Each location will be provided with a minimum of two jacks. Jack configuration, faceplate, mounting height and location are determined by Facilities drawings. 2. Jacks that serve the same office/cubicle work area may be combined into one faceplate with a maximum of 6 jacks to a single-gang faceplate. Page 8 of 42

9 3. Exception: Steel or gray electroplated face plates can be used in areas outside the typical office environment (e.g. labs, warehouses, etc) with a maximum of 6 jacks to a single-gang faceplate only. 4. A list of preferred Category 5E and Category 6 cable, jacks, patch panels and patch cords can be found in Appendix B. UPGRADES / REWORK 1. All new jacks will be Category 5E (ANSI/TIA/EIA 568-B). Category 5E cabling will be terminated between the jack and a Category 5E RJ patch panel in the wiring closet as a channel certified end-to-end solution. Each office/cubicle will be provided with a minimum of two jacks. Jack configuration, faceplate, mounting height and location are determined by Facilities drawings. 2. Jacks that serve the same office/cubicle work area may be combined into one faceplate with a maximum of 6 jacks to a single-gang faceplate. 3. Exception: Steel or gray electroplated face plates can be used in areas outside the typical office environment (e.g. labs, manufacturing, etc) with a maximum of 6 jacks to a single-gang faceplate only. 4. During any rework of a facility an attempt should be made to replace 66 blocks with 110 blocks in the wiring closets. All existing Category 3 and 4 cabling within the scope of the project is to be replaced with a minimum new Category 5E cable. Existing Category 5E cable may be re-used where conditions exist. 5. A list of preferred Category 5E and Category 6 cable, jacks, patch panels and patch cords can be found in Appendix B. a. All LAN frames and cabinets that require power should have the minimum of a 20-amp surge protector, multiple outlets installed. b. All electrical requirements should be dedicated for the specific IT room, preferably via a dedicated electrical power panel(s) inside room. 6. Grounding - All racks, frames, cabinets, and miscellaneous equipment shall be grounded together using green, No. 6 insulated copper ground wire (low smoke, plenum rated, 6 AWG, 600V, UL Listed, AT&T # KS5482-L23FA, Type R2, 90C) (Acceptable alternate: low smoke, plenum rated, 6 AWG, 600V, UL Listed, Service Wire Company # THW-2, VW-1) so that all equipment, communications racks and frames are at the same ground potential. (A VOM measurement between any two points on racks and equipment cases in the communications room shall be less than 1.25 volts dc or ac potential.) Additional grounding/bonding shall be added to meet this Specification. Page 9 of 42

10 Part 3. Installation Considerations TYPICAL INSTALLATION ERRORS 1. Excessive untwisting of copper pairs prior to insertion into punch down blocks (the maximum amount of untwisting permitted with Category 5E cabling is 13 millimeters, or about 1/2 inch). 2. Failure to adhere to maximum bend radiuses defined for Category 5E cables (bend radiuses should be no less than four-times the diameter of the 4 pair cable). 3. Over cinching of cable bundles with cable ties. 4. Drip loops behind PT s, (Never allow this) COMMUNICATIONS INSTALLATION PRACTICES 1. Avoid sharp bends (90 degrees) in all cable. 2. Care should be exercised to avoid twisting of cable during installation. There should be no kinks or hard twists in any cable run. 3. The maximum bend radius defined for Category 5E cables must be no less than four-times the outside diameter of the cable. 4. The maximum pulling tensions for 4 pair 24 AWG UTP cables should not exceed 25 lbs per foot to avoid stretching the conductor during installation. 5. The maximum bend radius of a fiber optic cable is 10 times the outside diameter (O.D.) of the cable. 6. Where cable tray exists, cables are to be routed in tray and exit only when absolutely necessary at right angles to tray and along building lines in accordance with Section "PATHWAYS, CABLE TRAYS, WIREWAYS, AND CONDUIT" in this document. 7. Service Loops: A 10 foot coil of fiber cable should be provided at both ends to allow for moving the fiber patch panels. A 10 foot service loop of copper cable should be provided at the telecommunications room end to allow for moving patch panels. This will be provided by having the contractor S loop the cable in the cable tray outside the telecommunications or riser room. Where raised floors are installed the slack can be made up under the floor. The minimum amount of slack at the outlet is 12 inches. 8. The maximum distance on any one Category 5, 5E, or 6 cables (excluding patch cables) will not exceed 295 feet (90 meters). 9. The maximum distance between network devices on multimode optical fiber cable will not exceed 2000 meters. Page 10 of 42

11 10. The maximum distance between network devices on single mode optical fiber cable will not exceed 3000 meters. 11. Do not use patch cable connectors/extenders. 12. Do not secure communications cables to power cords. 13. Do not secure patch cables in a loop. 14. Do not install cable ties within 2 feet of a bend, or turn. 15. The maximum pulling tension for cable ties should not exceed 20 lb/ft. 16. All cables must be labeled at both ends with wrap-around labels. 17. Cable jacket removal must not exceed 1 inch or 25 millimeters. 18. LAN signals will not be split/shared with any other signal. Only one LAN connection per four pair cable/jack is allowed. 19. Splitting analog signals over the same four pair cable will be reviewed on a caseby-case basis. 20. The minimum clearance between electrical conduits and communications cables routed in parallel under a raised floor is 24 inches. 21. The minimum clearance between power cables and communications cables routed in parallel is 24 inches (except when in a grounded, divided cable tray). 22. All cables must be tested and the test results should be turned over to Network Services. Contractors should coordinate with the IT project manager for any additional test or requirements. 23. All communications cables shall be secured with Velcro style cable ties. (Note: Plenum areas require the use of Plenum rated Velcro cable ties.) Black or White in color is recommended. 24. Fiber counts to be specified and assigned by the Network Services. Part 4. Cable Specifications CABLE SPECIFICATIONS HORIZONTAL CABLING SYSTEMS 1. Horizontal cabling shall be the portion of the telecommunications wiring system that extends from the telecommunications outlet in the work area to the telecommunications wiring closet and shall be installed in a star topology. Horizontal cabling should be terminated in a telecommunications room that is on the same floor as the area being served. Page 11 of 42

12 2. Cabling between telecommunications rooms is considered part of the backbone cabling system. 3. Unshielded Twisted Pair Cable a. As a minimum 4-pair, 100-ohm, solid core, 22 AWG to 24 AWG Category 5E UTP wiring will be installed for providing Voice and Data services in the Horizontal Wiring system. To be considered Category 5E, cable shall meet all of the mechanical requirements of ANSI/ICEA S must comply with ANSI/EIA/TIA-568-B standards. b. Category 5E Cabling i) Maximum length of horizontal distribution cable is 90m (295 ft) from the cross-connect to the outlet/connector. ii) iii) Station cables should not exceed 5m (16 feet) and cross connect cables in the telecommunications closet should not exceed 5m (16 feet) All installed Category 5E cable shall be tested and pass according to ANSI/EIA/TIA-568-B test methods. c. Installation Practice i) Factory or field splices of the insulated conductors shall not be allowed on any portion of the cable. ii) iii) iv) Cable slack (service loop) shall be provided at each end of installed horizontal cable plant. The recommended minimum amount of slack for all cabling in the telecommunications room should be 3m (10 feet). Service loop should be1m (3.3 feet) for optical fiber and 30cm (12 inches) for twisted-pair at the outlet. Include the slack in all length calculations to ensure cable does not exceed 90m (295 feet). Both ends of all cabling must be labeled with wrap around style printed labels uniquely identifying the cable. Horizontal cabling shall not be installed directly to telecommunications equipment. v) Mount telecommunication outlets/connectors securely at the work locations, locate the outlet/connector so patch cable required to reach equipment will be no longer than 5m (16 feet). vi) Plenum rated cables shall be 100 percent FEP for the insulation except where it is proven that the cable constructed with alternate materials meets or exceeds the electrical performance of FEP. Page 12 of 42

13 vii) viii) ix) Certification testing must be performed on all Category 5E installed wires. Certification tests shall meet all requirements for the most current specifications outlined by IT practices If any of the horizontal wiring is routed through plenum air space, this wiring must be plenum-rated wire in accordance with all local, state, and federal standards. LGX Distribution frames are to be used in Owner facilities. 4. Fiber Optic Cable a. Horizontal Fiber Optic Wiring shall be Multimode (MMF), graded index optical fiber waveguide with nominal 62.5/125µm-core/cladding diameters. 62.5/125µm shall be used for all new construction and 50/125µm may be requested in addition to 62.5/125µm. Single-mode (SM) fiber optic cable should also be installed to support future applications. All horizontal fiber optic cable shall be installed as a minimum of 12 Singlemode (SM) fiber strands and 24 Multimode (MMF) strands; it is not required or desirable to have horizontal Single-mode (SM) and Multimode (MMF) cable combined into a single jacketed sheath. All optical fiber shall be installed within inner duct or with armor jacketing. The maximum length of horizontal MMF is 2,000 meters (6560 feet) and 3000 meters (9840 feet) for SM. Cable installed should have different outer jacket color to designate type, and have designated footage markers at least every five feet or one-meter increments using the metric system. 62.5µm shall be orange, 50µm shall be blue and SM shall be yellow. All fiber shall comply with ANSI/EIA/TIA-492A specifications. i) Fiber Optic Cable Transmission Performance Specifications Each cabled fiber shall meet graded performance specifications of table 2.1 and 2.2. Attenuation shall be measured in accordance with ANSI/EIA/TIA , -53, or 61. Information transmission capacity shall be measured in accordance with ANSI/EIA/TIA , or 30. The cable shall be measured at 23 C 5 C. Table 2.1 Horizontal multi-mode Optical Fiber Cable Transmission Performance Parameters Wavelength (nm) Maximum Attenuation (db/km) Minimum Transmission Capacity (MHz/km) Page 13 of 42

14 Table 2.2 Horizontal single-mode Optical Fiber Cable Transmission Performance Parameters Wavelength (nm) Maximum Attenuation (db/km) Maximum Attenuation Inside Optical Fiber Cable (db/km) b. Backbone (Vertical) Fiber Optic cabling shall be multimode (MMF), graded index optical fiber waveguide or and single-mode optical fiber. Maximum length for vertical, multimode (MMF) fiber optic cable is 220 meters (721 feet) using 1000base-SX transceivers. Distances over 220 meters (721 feet) and up to 550 meters (1804 feet) can use multimode (MMF) cable with 1000base-LX transceivers. Backbone distances over 550 meters (1804 feet) must use single-mode optical fiber cable. All building cable shall meet or exceed Local Fire and Safety Codes. THE BACKBONE The function of the backbone wiring is to provide interconnections between telecommunications closets, equipment rooms, and entrance facilities in the site-wide wiring system structure. The backbone wiring includes transmission media between buildings and can consist of both fiber optic and multi pair copper to support both data and voice applications. 1. Mandatory Standards: a. Backbone cabling should consist of one of the following recognized cable types allowed by the EIA/TIA 568-B standard: i) Four-pair, AWG solid core, 100-ohm, UTP (Cat 5E) ii) 50/125 or 62.5/125 um multimode optical fiber cable, validate with the Department of Communications & Computer Services on all proposals and/or bids. iii) Single-mode optical fiber cable iv) Reference ANSI/TIA/EIA 758 standards to specifically cover outside plant (inter-building) backbones. b. Site LAN backbones using multiple strand fiber optic cabling should be implemented in a physical star topology. Logical bus, ring and tree topologies can be created using a physical star topology. c. A backbone star topology should have no more than two levels of crossconnections. Connections between two telecommunication closets should pass through no more than three cross-connects not including the horizontal cross connects. For Example: Page 14 of 42

15 d. All wiring which passes through non-owner occupied space (leased multitenant buildings) must be encased within conduit for security purposes. Cable grounding shall meet the appropriate NEC requirements and practices except where other authorities or codes impose a more stringent requirement or practice. e. All cabling must be clearly labeled and documented as to application (i.e. LAN backbone, voice trunking, asynchronous trunking, etc.). 2. Guidelines: a. All new LAN backbone cabling installations should consist of fiber optics. At this time, both multi-mode (62.5/125) and single-mode optical fiber cable are recommended. Which you choose will depend on distance and application. b. All optical fiber cabling should be pulled inside conduit with inner duct. c. A "service loop" shall be left at each fiber termination point of at least 10 feet or enough length to re-locate the fiber termination box if necessary. This should be done at both ends of the cable. d. When pulling fiber, determine how many fiber pairs you need and pull in additional for future growth. Fiber optic cables usually come in multiples of 6 and 12 strand. Pulling twice the number you need is not uncommon. e. Consider pulling some single mode fiber, whether you have immediate plans for it or not. You can save some cost by leaving it un-terminated (dark fiber) until you have a need for it. f. Minimum calculated capacity of voice multi-pair UTP backbone cabling (100s of pairs) should be at a "saturation level" sufficient to accommodate maximum population density ("sardine pack"). g. The maximum allowable distance from the telecom-wiring closet to the main cross-connect is 2000 meters (6560 feet) for fiber optic cabling, and 500 meters (1640 feet) for multi-pair UTP backbone cabling. Reference ANSI/NFPA 780 for issues with outside cabling and proper lightning protection. h. Proper copper lightning protection must be planned and implemented for cabling that exits or enters any facility. i. It should be noted that if you are planning to use Gigabit Ethernet as a backbone technology, the distance limitations are 550 meters for multimode fiber and 5km for single mode fiber. Page 15 of 42

16 OUTLET CONNECTOR SPECIFICATIONS 1. Jacks a. Category 5E UTP cabling must be terminated using 8-conductor, 8- position Category 5E approved connectors and must be tested in accordance with ISO and ANSI/TIA/EIA 568-B standards. The pin/pair assignment must be the T568B configuration. b. See Section "ENVIRONMENTAL AND INSTALLATION REQUIREMENTS" for jack and faceplate finishes. c. Multimode fiber optic cabling used in the Horizontal building wiring will use field installable, mechanical (No Hot Melt) connectors. d. A list of preferred Category 5E and Category 6 cable, jacks, patch panels and patch cords can be found in Appendix B 2. Faceplates or Wallboxes a. Jacks that serve the same work area may be combined into one faceplate with a maximum of 6 jacks to a single-gang faceplate. i) The Faceplate or Wallbox must provide adequate space for labeling. ii) iii) iv) Must provide adequate Cable Management for the wiring. In an open office environment (partitions), the faceplate/wallbox must be installed along the center spine of the partition row. Outlet faceplates must be labeled with the jack numbers or patch panel ports as appropriate. All jacks must be flush with the faceplate. v) Telecommunication outlet boxes must be at least 5-cm by 7.5-cm by 6.4-cm deep (2-inches by 3-inches by 2 ½ -inches deep). vi) Wallboxes and all surface mounted boxes should be permanently attached with screws. CONNECTING HARDWARE SPECIFICATIONS 1. Unshielded Twisted Pair, Patch Panels a. In the communications rooms, server rooms, or labs, all LAN on a wall field. 110 patch cords will be utilized. We do not use Patch panels on Cat 5 or 5e installations. Page 16 of 42

17 i) Cabling must be terminated using approved termination block or connector hardware (same Category, or higher) and must be wired in accordance with ISO & ANSI/TIA/EIA 568-B standard. b. A list of preferred Category 5E and Category 6 cable, jacks, patch panels and patch cords can be found in Appendix B 2. Fiber Patch Panels/Connectors a. If fiber optic cabling is required, all installations shall be in accordance with published ANSI standards for fiber optic installations. In fiber patch panels, use ST connectors for multimode and single mode optical fiber will use ST connections. JUMPERS AND PATCH CORDS 1. Unshielded Twisted Pair Cable a. All "new" UTP jumper and patch cables will be a minimum Category 5E stranded conductors with strain relief for extended flex-life. Owner uses a harness concept from the wall field to the Switch. Please ensure that you have visited an Owner wiring closet before responding to this item in a bid or proposal. 2. Fiber Optic Cable a. Vendor provided Multimode Fiber (MMF) & Single Mode Fiber (SMF) Patch Cord assemblies are supported for use to connect the Horizontal & Vertical Wiring Patch Panel directly to the Active Workgroup Hub connection points. Part 5. Pathways, Cable Trays, Wireways and Conduit GENERAL All communications cables should be installed in a cable tray, wireway, or conduit and cross perpendicular to fluorescent lighting and electrical power cables or conduits. All cables shall remain within the pathway, cable tray, wireway and/or conduit until necessary to breakout at the work area. Do NOT install communications cables in elevator shafts, as this will cause electrical interference. Ceiling support wire or rod will not be the means of supporting cables and the cable will not be laid directly on ceiling tile. In addition, communications cables will not be supported from conduits or wireways containing power circuits. Page 17 of 42

18 1. Ladder Trays a. Inside of the MDF or IDF Rooms, 12 to 24 ladder tray is to be used for wire management. This tray is designated for cabling to remain within these rooms. Horizontal or station cabling will not be installed in this tray. Data harness, fiber pigtails, and voice switch tails are examples of cabling to be installed in this tray. Any implementation of this tray will include spill brackets at all inside corners. 2. Cable Trays a. It is recommended that cable tray should be installed parallel to furred-out wall 6 to 12 inches inside the Communications Room. Tie into cable trays, routed throughout the building, to have a continuous path for all cables to run in. The cable tray should continue into the IDF/MDF far enough to deliver the riser, station/horizontal, and fiber to the end destination (i.e., rack, wall field, or XLBET). b. Vertical cable trays should run and tie into the horizontal tray. In addition, the vertical cable trays should be mounted on fire rated plywood or solidly anchored to the wall so as not to pull loose. If no tray system is installed in the building, provide a suitable tray system to connect the data rack with the cross-connect wall. c. Floor and ceiling penetrations for all riser cabling (fiber and/or copper) will have a vertical tray installed to support all communications cabling. The vertical, ladder-type cable tray to be a minimum of 18 wide with 4 side rails. This cable tray should meet the specifications as stated below. All vertical, riser cabling to be secured to relieve stress (minimum of 3 each per floor). It is preferred to have the vertical penetrations lined up through the floors for a continuous vertical cable tray path, especially in new building design. Otherwise, the concrete penetrations must have an acceptable form of protection installed to avoid cable contact with thee concrete. d. All cables shall be secured when exiting or leaving the cable tray and will have proper support. e. All cable trays must be a prefabricated structure consisting of two side rails connected by individual transverse members (aluminum ladder cable tray). Wire-mesh type tray (i.e., Snake Tray/Versa-Tray), and Monosystems (i.e., fish bone style systems) are unsatisfactory as their life expectancy is far less than the life expectancy of the cable installed. The horizontal, ladder type cable tray to be a minimum of 12 wide with 4 side rails. The horizontal cable tray should be able to support a minimum of 100 lbs of cable per linear foot. f. Cable tray located above the ceiling to meet the following recommendations: Page 18 of 42

19 i) A minimum of 3 inches of vertical clearance is to be maintained above suspended ceiling tiles and T-bars. ii) iii) A minimum of 3 inches of vertical clearance is to be maintained above conduits and exposed cables. A minimum of 12 inches of clear vertical clearance is to be maintained above cable trays. 3. Cable Management Rings or Hook-and-Loops a. Cable management precautions that should be observed include the elimination of cable stress as caused by tension in suspended cable runs not located in cable tray or conduit. In addition, the maximum distance on any suspended cable run will not exceed 5 feet (1.5 meters). All cables exiting or leaving the raceway must be supported within 5 feet with an approved support method. Hook-and-loop or cable management rings are to be spaced no greater than 5 feet (1.5 meters) apart. They are not to support more than 50 single 4-pair (or 25 dual 4-pair) cables. Routing through bar-joists may be acceptable in some cases (with Owner s Network Services / Telecommunications groups approval) provided the bar-joist spacing is not greater than 5 feet. 4. Wireways a. The maximum number of 4 pair cable in a dedicated G6000 wireway is 80. The maximum number of 4 pair cable in a dedicated G4000 wireway is 40. Use 1 1/2 inch x 1 1/2 inch adhesive back tie wrap holders in all dedicated G4000 and G6000. The tie wraps holders should be no more than 36 inches apart. This prevents all of the cables from lying on the bottom of the wireway and getting pinched by the covers. When cable is installed in a wireway, an 18-inch service loop should be provided prior to entering the wireway b. Device boxes should be mounted on wireways with chase nipples. This prevents the jacks from being installed directly in the cable path of the wireway. Installing the faceplate and additional cable could interfere with the jack termination if flush mount brackets are used. 5. Cable Trays a. Cable trays and wireways may be divided with a grounded metallic barrier to allow the placement of both power and telecommunications cables as required by the electrical code. Page 19 of 42

20 6. Conduit a. Minimum requirements for installed conduit, such as support, end protection, and continuity, are found in the appropriate electrical codes. All conduits will be bonded to ground on one or both ends. All ends of metallic conduit must be reamed and bushed. No continuous section of conduit to be longer than 100 feet with out pull boxes and contain no more than two 90 degree bends (or the equivalent sum of 180 degrees). Note: M. D. Anderson specifications require all conduit to be no less than ¾ inches in diameter. b. If flexible conduit is used in lieu of a specified non-flexible conduit, increase the conduit size by one trade size. c. Conduit to be run in the most direct route possible along building lines or perpendicular to building lines. d. Ninety-degree condulets (LBs) are not allowed. e. The inside radius of a bend in conduit shall be at least 6 times the internal diameter. When the conduit size is greater than 2 inches (50mm), the inside radius shall be at least 10 times the internal diameter of the conduit. For fiber optic cable, the inside radius of a bend shall always be at least 10 times the internal diameter of the conduit. f. A nylon, fish tape pull cord (rated at 200 lbs and with increments marked every foot) shall be placed in the installed conduit and replaced when cable is pulled through the conduit. g. The total length of a conduit run should be kept to 150 feet or less (including sections thru pull boxes). Any installation requiring a longer distance is to be approved prior to installation h. If a conduit: i) Exceeds 100 feet (30 m) in a continuous run, a pull box must be installed. ii) iii) iv) Requires more than two 90-degree bends, then a pull box must be provided between the sections. A reverse bend (between 100 degree and 180 degree), then a pull box must be provided at each bend having an angle from 100 degree to 180 degree. A third 90 degree bend (between pull points or pull boxes) and one of the following is true: v) The total run is no longer than 33 feet Page 20 of 42

21 vi) vii) The conduit is increased by one trade size One of the bends is located within 12 inch of the cable feed end 7. Conduit for Fiber-Optic Cable a. The conduits will run the shortest possible route. Conduits will have a pull box every 150 foot (18 inches X 18 inches X 4 inches) and will have no more than two 90 degrees bends without pull box. The 90 degree bends shall not have less than a 12-inch bend radius. The following information should be noted on the prints for future pulls. Conduits are to have 200 lb test pull rope/mule tape (not Jetline) placed and secured with the length of the conduit run attached. Also note the location of the other end. Conduits running to equipment enter from the bottom (if possible), if on raised floor or floor other than ground floor. This may mean at least two or more phases on conduit run. 8. Pull Boxes a. Where required, install all pull boxes in easily accessible locations and immediately above suspended ceilings. They must be rated for the space in which they are located and clearly labeled. Pull boxes are not to be used in lieu of a bend. All pulls thru a pull box are to be straight with no turns. Align conduits that enter the pull box from opposite ends with each other. b. Pull boxes for pulling and looping cables with an outside diameter greater than 2 inches are not allowed in ceiling spaces and must be located on a wall or column. The length of a pull box is to be a minimum of 12 times the diameter of the largest conduit. c. All conduit used for fiber, must have inner duct installed prior to fiber cable being installed. Inner duct should have a 200lb test pull rope/mule tape (not Jetline) placed and secured with the length of the inner duct run attached. Recommended sizes: Conduit Size Size of Pull Box Increase Width for Width Length Depth Each Additional Conduit 3/4" 4" 12" 3" 2" 1" 4" 16" 3" 2" 1 1/4" 6" 20" 3" 3" 1 1/2" 8" 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" Page 21 of 42

22 Part 6. Racks, Cabinets and Equipment Layout GENERAL 1. The layout of the communications and data equipment in the server/communications room must allow the opening of cabinet doors, drawers, trays, entry doors, passage doors, etc. without the need to remove, temporarily displace, or impair access to other equipment in the room. PBX equipment and cable distribution and termination must be installed in a separate area from the data equipment in the server/communications room. 2. At a minimum, mounting racks must be installed at least 36 inches (front and rear) from any surrounding walls, or obstruction, to permit installation, removal, and systems support from the back of the equipment. This distance is measured from the wall to the edges of the back of the rack, not the rack support base (bolting foot plate). Rack-mounted UPS power modules and power sources must be mounted in the lower rack positions. Cable trays must be directly above and/or perpendicular to the mounting racks. 3. Rack-mounted server cabinets must have communications and power cables separated within the cabinet. 4. A working clearance of 36" is required per code, (front and rear), surrounding cabinets (single or clustered). 5. Department of Communications & Computer Services Department is responsible for the design of all MDFs and IDFs. FIRE STOPPING 1. The role of fire stopping in fire protection 2. A comprehensive Fire Protection program must include: a. Fire prevention b. Fire detection c. Fire suppression d. Fire containment 3. Applicable codes, guidelines and standards (Unless specifically stated, the most current version of each document is applicable) a. International Fire Protection Code (2002) b. National Fire Protection Association (NFPA) c. NFPA 70, The National Electrical Code (NEC) d. NFPA 251, Standard Method of Fire Tests of Building Construction and Materials Page 22 of 42

23 e. Underwrites Laboratories (UL) f. UL 1479, Fire Tests of Through-Penetration Firestops g. Uniform Building Codes (UBC) h. Section on Through-Penetration Fire Blocks i. Section on Penetrations (Wall and Partitions) j. Section on General (Floor-Ceiling and Roof-Ceilings) k. ANSI/EIA/TIA Commercial Building Standard for Telecommunications (current edition and all addendums) a. City of Houston Fire Codes b. Compliance with State Fire Marshall's Department and all other authorities having jurisdiction 5. Non-Mechanical Fire Stopping (Pliable and conforms to openings) a. Putty - Intumescent b. Putty with fill - Ceramic fiber or rock wool c. Caulk - Intumescent, endothermic, or ablative d. Cementatious - For large openings e. Intumescent Sheet - To surround or sub-divide large openings f. Intumescent Wrap Strips - Install around combustible materials g. Silicone Foams h. Pillows 6. Mechanical Fire Stopping (Pre-manufactured fitted in frame) a. Flexible b. Durable - Shock and seismic vibration resistant c. Provides reliable pressure and environmental sealing d. Provides support to pathways and cables e. Costs more than non-mechanical 7. Additional Requirements a. Identify and firestop ALL nonqualified electrical apparatus as determined appropriate. Part 7. Equipment Rooms ENTRANCE FACILITIES The Entrance facility consists of the telecommunications service entrance to the building, including the entrance point through the building wall, and continuing to the entrance room or space. The entrance facility may contain the backbone pathways that link to other buildings in campus situations. Department of Communications & Computers Services is responsible for the design of the Telecommunications Entrance Facility. 1. Mandatory Standards: Page 23 of 42

24 GUIDELINES a. In determining the total number of entrance pathways required, the planner shall consider the following; type and use of building; growth; difficulty of adding pathways in the future; alternate entrance; and the type and size of cables likely to be installed. A minimum of (2) spare 4" conduits (dedicated for future communications use only) should be provided in addition to the conduits required. The number of conduits installed for any project should not be less than (4) 4" conduits total. b. All conduits shall be 4 inch of one of the following types: PVC, Multiple Plastic Duct (MPD), Steel, or Fiberglass. c. Conduit should slope away from building and at least.125 per foot, toward manhole and should have no more than two 90 degree bends between manhole and building. d. At the entrance point, the conduit shall extend 24 beyond the exterior of the foundation. The termination on the inside wall shall have a smooth bell shaped finish, unless it extends into a remote entrance room. e. All conduits shall be stubbed up to a minimum of 3" above finished floor. f. All conduits shall be plugged to restrict the infiltration of gas, water, and vermin. g. The entrance room shall be located in a dry area not subject to flooding and as close as practical to the backbone pathways. h. Entrance room wall space (for smaller buildings) or room space (or larger buildings) to be sized in accordance to support multiple disciplines such as: Voice, Network, UTPD Security, BAS, and CATV. i. Plumbing is not allowed to pass through any communications rooms or allowed in the walls of any communications room. j. Communications rooms are not allowed to be adjacent to any elevators or elevator equipment rooms. 1. For new construction carriers and telecommunications providers involved in providing service to the building shall be contacted to establish their requirements and explore alternatives for delivering service. The locations of other utilities, such as electrical, water, gas, and sewer, shall be considered in the site selection of the telecommunications entrance facility. 2. For a large buildings or campus environment, an additional Entrance Facility may offer a diverse route of carrier services. This could be important for continuity of service, especially if the service is delivered from different office or a different provider. Page 24 of 42