271500 Communications Structured Cabling.pdf

UPGRADE BMS NETWORK

SAMUEL S. STRATTON VAMC

VA#: 528A8-22-851

01-01-16

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SECTION 27 15 00

COMMUNICATIONS STRUCTURED CABLING

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies a structured cabling distribution system and associated equipment and hardware.

1.2 RELATED WORK

A. General electrical requirements that are common to more than one section in Division 27: Section 27 05 11, REQUIREMENTS FOR

COMMUNICATIONS INSTALLATIONS.

B. Conduits for cables and wiring: Section 27 05 33, RACEWAYS AND BOXES

FOR COMMUNICATIONS SYSTEMS.

C. Low voltage cabling system infrastructure: Section 27 10 00, CONTROL, COMMUNICATION AND SIGNAL WIRING.

1.3 SUBMITTALS

A. In addition to requirements of Section 27 05 11, REQUIREMENTS FOR

COMMUNICATIONS INSTALLATIONS provide:

1. List of test equipment as per 27 05 11, REQUIREMENTS FOR

COMMUNICATIONS INSTALLATIONS.

B. Certifications:

1. Submit written certification from OEM indicating that proposed supervisor of installation and proposed provider of contract maintenance are authorized representatives of OEM. Include individual's legal name and address and OEM warranty credentials in the certification.

2. Pre-acceptance Certification: Submit in accordance with test procedures.

3. Test system cables and certify to COR before proof of performance testing can be conducted. Identify each cable as labeled on as-installed drawings.

4. Provide current and qualified test equipment OEM training certificates and product OEM installation certification for contractor installation, maintenance, and supervisory personnel.

C. Closeout Submittal: Provide document from OEM certifying that each item of equipment installed conforms to OEM published specifications.

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1.4 WARRANTY

A. Work subject to terms of Article "Warranty of Construction," FAR clause

52.246-21.

PART 2 - PRODUCTS

2.1 PERFORMANCE AND DESIGN CRITERIA

A. Industry Standards:

1. Conform to National and Local Life Safety Codes (whichever are more stringent), NFPA, NEC, this section, Joint Commission Life Safety

Accreditation requirements, and OEM recommendations, instructions, and guidelines.

2. Provide supplies and materials listed by a nationally recognized testing laboratory where such standards are established for supplies, materials or equipment.

3. Refer to industry standards and minimum requirements of Section 27

05 11, REQUIREMENTS FOR COMMUNICATIONS INSTALLATIONS and guidelines listed.

4. Active and passive equipment required by system design and approved technical submittal; must conform to each UL standard in effect for equipment, when technical submittal was reviewed and approved by

Government or date when COR accepted system equipment to be replaced. Where a UL standard is in existence for equipment to be used in completion of this contract, equipment must bear approved

NRTL label.

B. System Performance: Provide complete system to meet or exceed TIA

Category 6A requirements.

C. Coordinate size and type of conduit, pathways and firestopping for maximum 40 percent cable fill with subcontractors.

D. Terminate all interconnecting twisted pair and fiber optic cables.

Terminate unused or spare conductors and fiber strands. Do not leave unused or spare twisted pair wire or fiber-optic cable unterminated, unconnected, loose or unsecured.

E. Color code distribution wiring to conform to ANSI/TIA 606-B and construction documents, whichever is more stringent. Label all equipment, conduit, enclosures, jacks, and cables on record drawings, to facilitate installation and maintenance.

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F. In addition to requirements in Section 27 05 11, REQUIREMENTS FOR

COMMUNICATION INSTALLATIONS, provide stainless steel faceplates with plastic covers over labels.

2.2 EQUIPMENT AND MATERIALS

A. Cable Systems - Twisted Pair, Fiber optic, Coaxial and Analog:

1. General:

a. Provide cable (i.e. backbone, outside plant, and horizontal cabling) conforming to accepted industry standards with regards to size, color code, and insulation.

b. Some areas can be considered “plenum”. Comply with all codes pertaining to plenum environments. It is contractor’s responsibility to review the VA’s cable requirements with COR and

OI&T Service prior to installation to confirm type of environment present at each location.

c. Provide proper test equipment to confirm that cable pairs meet each OEM’s standard transmission requirements, and ensure cable carries data transmissions at required speeds, frequencies, and fully loaded bandwidth.

2. Backbone Copper Cables:

a. Copper Cable:

1) Provide communication riser cables listed in NEC Table 800, 154(a) for the purpose and suited for electrical connection to a communication network.

2) Provide STP or Unshielded Twisted Pair (UTP), minimum 24

American Wire Gauge (AWG) solid, thermoplastic insulated conductors for communication (analog RF coaxial cable is not to be provided in riser systems) riser cables with a thermoplastic outer jacket.

3) Label and test complete riser cabling system.

SPEC WRITER NOTE:

3. Fiber Optics Backbone Cable:

a. Provide 62.5/125 micron OM4 multi-mode cable, containing at minimum 18 strands of fiber, unless otherwise specified.

b. Provide loose tube cable, which separates individual fibers from the environment, or indoor/outdoor cables, for outdoor runs or any area that includes an outdoor run.

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c. Provide tight buffered fiber cable or indoor/outdoor cables for indoor runs.

d. Terminate multimode fibers at both ends with SC type female connectors installed in an appropriate patch or breakout panel and secured with a cable management system. Provide minimum 610 mm (2 ft.) cable loop at each end.

e. Test all fiber optic strands' cable transmission performance in accordance with TIA standards. Measure attenuation in accordance with fiber optic test procedures TIA-455-C ('-61', or -53).

Provide written results to COR for review and approval.

2.3 DISTRIBUTION EQUIPMENT AND SYSTEMS

A. Backbone Distribution Cables:

1. Meet TIA transmission performance requirements of Category 6A.

2. Provide cable listed for environments where it is installed.

3. Technical Characteristics:

a. Length: As required, in minimum 1 kilometer (3,000 ft.) reels.

b. Size:

1) Minimum 0.326 mm2 (22 AWG) outside plant installation.

2) Minimum 0.205 mm2 (24 AWG) interior installations.

c. Color Coding: American Telephone and Telegraph Company Standard;

Bell System Practices Outside Plant Construction and Maintenance

Section G50.607.3, Issue 2 February, 1959.

d. Minimum Bend Radius: 10X cable outside diameter.

e. Impedance: 120 Ohms + 15 percent.

f. DC Resistance: Maximum 8.00 ohms/100 m

g. Shield Coverage: As required by drawing notes single shield tape

h. Maximum attenuation for 100m at 20° C:

Frequency (MHz) Category 6A (dB)

.772 -

1 2.1

4 3.8

8 5.3

10 5.9

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Frequency (MHz) Category 6A (dB)

16 7.5

20 8.4

25 9.4

31.25 10.5

62.5 15.0

100 19.1

200 27.6

250 31.1

300 34.3

400 40.1

500 45.3

4. Fiber Optic:

a. Multimode Fiber:

1) Provide OM4 Type general purpose multimode fiber optic cable installed in conduit for system locations with load-bearing support braid surrounding inner tube for strength during cable installation.

2) Technical Characteristics:

a) Bend Radius: Minimum 152 mm (6 inches); outer jacket as required.

b) Fiber Diameter: 62. microns.

c) Cladding: 150 microns.

d) Attenuation:

1) 850 nanometer: Maximum 4.0 dB per kilometer.

2) 1,300 nanometer: Maximum 2.0 dB per kilometer.

e) Bandwidth:

1) 850 nanometer: Minimum 160 MHz.

2) 1,300 nanometer: Minimum 500 MHz.

f) Connectors: Stainless steel.

b. Single mode Fiber:

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1) Provide OS1 Type general purpose single mode fiber optic cable installed in conduit for all system locations with load-bearing support braid surrounding inner tube for strength during cable installation.

2) Technical Characteristics:

a) Bend Radius: Minimum 100 mm (4 inches).

b) Outer Jacket: PVC.

c) Fiber Diameter: 8.7 microns.

d) Cladding: 125 microns.

e) Attenuation at 850 nanometer: 1.0 dBm per kilometer.

f) Connectors: Ceramic.

B. System Connectors:

1. Modular (RJ-45/11 and RJ-45): Provide high speed data transmission applications type modular plugs compatible with computer terminals, and other type devices requiring linking through modular telecommunications outlet to the system compatible with UTP cables.

a. Technical Characteristics:

1) Number of Pins:

a) RJ-45: Eight.

b) RJ-11/45: Compatible with RJ-45.

2) Dielectric: Surge.

3) Voltage: Minimum 1,000V RMS, 60 Hz at one minute.

4) Current: 2.2A RMS at 30 minutes or 7.0A RMS at 5.0 seconds.

5) Leakage: Maximum 100 µA.

6) Connections:

a) Initial contact resistance: Maximum 20 milli-Ohms.

b) Insulation displacement: Maximum 10 milli-Ohms.

c) Interface: Must interface with modular jacks from a variety of OEMs. RJ-11/45 plugs provide connection when used in

RJ-45 jacks.

d) Durability: Minimum 200 insertions/withdrawals.

C. Fiber Optic Terminators:

1. Pre-polished crimp on type that has proper ferrule to terminate fiber optic cable.

2. Technical Characteristics:

a. Frequency: Light wave.

b. Power Blocking: As required.

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c. Return Loss: 25 dB.

d. Connectors: SC.

e. Construction: Ceramic.

D. Conduit and Signal Ducts:

1. Conduit:

a. Provide conduit or sleeves for cables penetrating walls, ceilings, floors, interstitial space, fire barriers, etc.

b. Minimum Conduit Size: 19 mm (3/4 inch).

c. Provide separate conduit and signal ducts for each cable type installation.

d. When metal (plastic covered, flexible cable protective armor, etc.) systems are authorized to be provided for use in system, follow installation guidelines and standard specified in Section

27 05 33, RACEWAYS AND BOXES FOR COMMUNICATIONS SYSTEMS and NEC.

e. Maximum 40 percent conduit fill for cable installation.

2. Signal Duct, Cable Duct, or Cable Tray: Use existing signal duct, cable duct, and cable tray, when identified and accepted by COR.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install for ease of operation, maintenance, and testing.

B. Install system to comply with NFPA 70 National Electrical Code, NFPA 99

Health Care Facilities, NFPA 101 Life Safety Code, Joint Commission

Manual for Health Care Facilities, and original equipment manufacturers' (OEM) installation instructions.

C. Cable Systems Installation:

1. Install system cables in cable duct, cable tray, cable runway, conduit or when specifically approved, flexible NEC Article 800 communications raceway. Confirm drawings show sufficient quantity and size of cable pathways. If flexible communications raceway is used, install in same manner as conduit.

2. Bond to ground metallic cable sheaths, etc. (i.e. risers, underground, horizontal, etc.).

D. Labeling:

1. Industry Standard: Provide labeling in accordance with ANSI/TIA-606-

B.

2. Print lettering of labels with laser printers or thermal ink transfer process; handwritten labels are not acceptable.

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3. Label both ends of all cables in accordance with industry standard.

Provide permanent Labels in contrasting colors and identify according to system “Record Wiring Diagrams”.

3.2 FIELD QUALITY CONTROL

A. Interim Inspection:

1. Verify that equipment provided adheres to installation requirements of this section. Interim inspection must be conducted by a factory-certified representative and witnessed by COR.

2. Check each item of installed equipment to ensure appropriate NRTL label.

3. Verify cabling terminations in telecommunications rooms and at workstations adhere to color code for T568B pin assignments and cabling connections comply with TIA standards.

4. Visually confirm marking of cables, faceplates, patch panel connectors and patch cords.

5. Perform fiber optical field inspection tests via attenuation measurements on factory reels and provide results along with manufacturer certification for factory reel tests. Remove failed cable reels from project site upon attenuation test failure.

6. Notify COR of the estimated date the contractor expects to be ready for interim inspection, at least 20 working days before requested inspection date, so interim inspection does not affect systems’ completion date.

7. Provide results of interim inspection to COR. If major or multiple deficiencies are discovered, COR can require a second interim inspection before permitting contractor to continue with system installation.

8. Do not proceed with installation until COR determines if an additional inspection is required. In either case, re-inspection of deficiencies noted during interim inspections must be part of the proof of performance test.

B. Pretesting:

1. Pretest entire system upon completion of system installation.

2. Verify during system pretest, utilizing the accepted equipment, that system is fully operational and meets system performance requirements of this section.

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3. Provide COR four copies of recorded system pretest measurements and the written certification that system is ready for formal acceptance test.

C. Acceptance Test:

1. After system has been pretested and the contractor has submitted pretest results and certification to COR, then schedule an acceptance test date and give COR 30 days' written notice prior to date acceptance test is expected to begin.

2. Test only in presence of a COR.

3. Test utilizing approved test equipment to certify proof of performance.

4. Verify that total system meets the requirements of this section.

5. Include expected duration of test time, with notification of the acceptance test.

D. Verification Tests:

1. Test copper cabling for DC loop resistance, shorts, opens, intermittent faults, and polarity between conductors, and between conductors and shield, if cable has an overall shield. Test cables after termination and prior to cross-connection.

2. Multi-mode Fiber Optic Cable: Perform end-to-end attenuation tests in accordance with TIA-568-B.3 and TIA-526-14A using Method A, Optical Power Meter and Light Source and Method B, OTDR. Perform verification acceptance test.

E. Performance Testing:

1. Perform Category 6A tests in accordance with TIA-568-B.1 and TIA-

568-B.2. Include the following tests - wire map, length, insertion loss, return loss, NEXT, PSNEXT, ELFEXT, PSELFEXT, propagation delay and delay skew.

2. Fiber Optic Links: Perform end-to-end fiber optic cable link tests in accordance with TIA-568-B.3.

F. Total System Acceptance Test: Perform verification tests for copper cabling systems and fiber optic cabling systems after complete telecommunication distribution system and workstation outlet are installed.

3.3 MAINTENANCE

A. Accomplish the following minimum requirements during one year warranty period:

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1. Respond and correct on-site trouble calls, during standard work week:

a. A routine trouble call within one working day of its report. A routine trouble is considered a trouble which causes a system outlet, station, or patch cord to be inoperable.

b. Standard work week is considered 8:00 A.M. to 5:00 P.M., Monday through Friday exclusive of Federal holidays.

2. Respond to an emergency trouble call within six hours of its report.

An emergency trouble is considered a trouble which causes a subsystem or distribution point to be inoperable at any time.

3. Respond on-site to a catastrophic trouble call within four hours of its report. A catastrophic trouble call is considered total system failure.

a. If a system failure cannot be corrected within four hours

(exclusive of standard work time limits), provide alternate equipment, or cables within four hours after four hour trouble shooting time.

b. Routine or emergency trouble calls in critical emergency health care facilities (i.e., cardiac arrest, intensive care units, etc.) are also be deemed as a catastrophic trouble.

4. Provide COR written report itemizing each deficiency found and the corrective action performed during each official reported trouble call. Provide COR with sample copies of reports for review and approval at beginning of total system acceptance test.

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