Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA Fiber Optic Communication System SECTION 16947 FIBER OPTIC COMMUNICATION SYSTEM PART 1 1.01 GENERAL REFERENCES A. The following is a list of standards that may be referenced in this section: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Electronic Components, Assemblies, and Materials Association (ECA): 310-E, Cabinets, Racks, Panels, and Associated Equipment. Institute of Electrical and Electronic Engineers, Inc. (IEEE): 802.3, Telecommunications and Information Exchange Between Systems— Local and Metropolitan Networks. Insulated Cable Engineers Association (ICEA): a. S-83-596, Optical Fiber Premises Distribution Cable. b. S-87-640, Optical Fiber Outside Plant Communications Cable. c. S-104-696, Indoor-Outdoor Optical Fiber Cable. International Organization for Standardization (ISO): 9001, Quality Management Systems—Requirements. International Telecommunication Union (ITU): T G.652, Characteristics of a Single-mode Optical Fibre and Cable. National Fire Protection Association (NFPA): 70, National Electrical Code (NEC). QuEST Forum (QF): TL 9000, Quality Management Systems. Rural Development Utilities Programs (RDUP): a. 7 CFR 1755.902, Minimum Performance Specification for Fiber Optic Cables. b. 7 CFR 1755.903, Fiber Optic Service Entrance Cables. Telecommunications Industry Association (TIA): a. 526-7, OFSTP-7 Measurement of Optical Power Loss of Installed Single-Mode Fiber Cable Plant. b. 526-14, OFSTP-14 Optical Power Loss Measurements of Installed Multimode Fiber Cable Plant. c. 568-C.1, Commercial Building Telecommunications Cabling Standards. d. 568-C.3, Optical Fiber Cabling Components Standard. e. 598, Optical Fiber Cable Color Coding. f. 606, Administration Standard for Commercial Telecommunications Infrastructure. Telecommunications Industry Association/Electronics Industry Association (TIA/EIA): a. 455-78, FOTP-78 - IEC 60793-1-40 Optical Fibres Part 1-40: Measurement Methods and Text Procedures – Attenuation. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-1 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA Fiber Optic Communication System b. 11. 1.02 455-133, FOTP-133 IEC-60793-1-22 Optical Fibres Part 1-22: Measurement Methods and Test Procedures Length Measurement. c. 492AAAA, Detail Specification for 62.5-Micrometer Core Diameter/125-Micrometer Cladding Diameter Class Ia GradedIndex Multimode Optical Fibers. d. 492AAAB, Detail Specification for 50-Micrometer Core Diameter/125-Micrometer Cladding Diameter Class Ia GradedIndex Multimode Optical Fibers. e. 492AAAC, Detail Specification for 850-nm Laser-Optimized, 50-um Core Diameter/125-um Cladding Diameter Class Ia Graded-Index Multimode Optical Fibers. f. 492CAAA, Detail Specification for Class IVa DispersionUnshifted Single-Mode Optical Fibers. g. 492CAAB, Detail Specification for Class IVa DispersionUnshifted Single-Mode Optical Fibers with Low Water Peak. h. 604-2, FOCIS-2 Fiber Optic Connector Intermateability Standard, Type ST. i. 604-3, FOCIS-3 Fiber Optic Connector Intermateability Standard, Type SC and SC-APC. j. 604-12, FOCIS-12 Fiber Optic Connector Intermateability Standard, Type MT-RJ. k. 942, Telecommunications Infrastructure Standard for Data Centers. l. TSB-140, Additional Guidelines for Field-Testing Length, Loss and Polarity of Optical Fiber Cabling Systems-Contains Color. Underwriter Laboratories (UL): 94, Tests for Flammability of Plastic Materials for Parts in Devices and Appliances. DEFINITIONS A. ATM: Asynchronous Transfer Mode. B. AUI: Attachment Unit Interface. C. dB: Decibel. D. DNI: Desktop Network Interface. E. EMB: Effective Modal Bandwidth. F. ETL: Electrical Test Laboratories. G. FDDI: Fiber Distributed Data Interface. H. FIM: Facilities Information Management. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-2 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA Fiber Optic Communication System I. Flux Budget: Difference between transmitter output power and receiver input power required for signal discrimination when both are expressed in dBm. J. FOCS: Fiber Optic Communication System. K. FOIRL: Fiber Optic Inter Repeater Link. L. Fusion Splice: Connecting ends of two fibers together by aligning fiber ends and applying electric arc to fuse ends together. M. Hybrid Cable: Cable containing more than one type of fiber. N. LAN: Local Area Network. O. m: Micrometer. P. Mbps: Megabits per Second. Q. Mechanical Splice: Connecting ends of two fibers together by means other than fusion. R. Megahertz (MHz): One million cycles per second. S. MHz: Megahertz. T. micro: x 10-6. U. Micron: Micrometer or one millionth meter. V. MIS: Management Information System. W. n, nano: x 10-9. X. N: Newton. Y. nm: Nanometer—unit of measure equal to one billionth meter. Z. OFL: Over-filled Launch. AA. OFN: Nonconductive Optical Fiber Cable. BB. OFNP: Nonconductive Optical Fiber Plenum Cable. CC. OFNR: Nonconductive Optical Fiber Riser Cable. DD. OLTS: Optical Loss Test Sets. EE. OTDR: Optical Time Domain Reflectometer. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-3 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA FF. Fiber Optic Communication System PIC: Process Instrumentation and Control. GG. Plenum: Air return path of central air handling system, such as open space above suspended ceiling. HH. RLM: Restricted Mode Launch. II. ROL: Reverse Oscillation Lay. JJ. SPC: Super Physical Contact. KK. UPC: Ultra Physical Contact. LL. UPS: Uninterruptible Power Supply. MM. V ac: Volts Alternating Current. NN. WAN : Wide Area Network. 1.03 SYSTEM DESCRIPTION A. This section covers requirements for Fiber Optic Communication Subsystem (FOCS). B. Refer to P&I Block diagrams and Electrical E-Drawings for additional requirements. C. The PICS subcontractor is responsible for furnishing, terminating, and testing all fiber optic cable and accessories as shown and specified. Fiber optic cable will be installed by the Electrical Subcontractor under the supervision of the PICS subcontractor. D. Conduits and innerduct system provided by Division 16, Electrical. Coordinate installation of fiber optic cable with the Electrical Subcontractor. E. Provide fiber optic cable based on cable lengths provided by the Electrical Subcontractor. Electrical subcontractor is responsible for the installation of the fiber optic cable provided by the PICS subcontractor. F. Terminate and test all fiber optic cable as shown and specified after fiber optic cable installation by the Electrical Subcontractor. G. Provide fiber optic components and fiber optic patch panels as shown and specified. Refer to the P&I block diagrams for additional requirements and component locations. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-4 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA H. Function of FOCS is to transmit digital data between network nodes. Requirements listed identify minimum acceptable system performance. I. Provide a FOCS based on referenced standards for use in the following local and wide area networks: 1. 2. 1.04 Fiber Optic Communication System Fast and Gigabit Ethernet. Ethernet/IP. J. Network(s) will be used by PIC to distribute data and coordinate Owner’s operations. K. Coordinate fiber optic cable, conduit, and innerduct requirements with Electrical Subcontractor. L. FOCS to furnish fiber optic cable for installation by the Electrical Subcontractor based on estimated lengths provided by the Electrical Subcontractor. M. Electrical Subcontractor to furnish and install conduit and innerduct for fiber optic cable. SUBMITTALS A. Action Submittals: 1. 2. 3. Block diagram showing the following: a. Provide a completely coordinated diagram showing all communications cabling including fiber optic and category 5 and 6 type Ethernet cabling connections. b. Access holes, with identification. c. All fiber optic patch panels and fiber optic connected equipment. d. Approximate fiber optic cable lengths. e. Type of fiber optic cable. f. Final O&M diagrams to include IP Addressing and VLAN assignments. Cable schedule showing: a. Cable identification. b. Fiber counts for each cable and identification of used fiber pairs. c. Cable length and attenuation, including connector pairs based on TIA/EIA 568, Annex H. Light budget calculations showing: a. Light emitting and receiving device pair power budget in dB. b. Attenuation between emitting and receiving device including all fiber optic cables, patch cords, connectors, patches, splices, and repeaters between devices. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-5 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA Fiber Optic Communication System c. 4. 5. B. Reserve light budget required by emitting and receiving device pair. d. Total remaining power budget in dB after all attenuation and reserve has been subtracted. Component Data: a. Manufacturer and model number. b. General data and description. c. Engineering specifications and data sheet. d. Scaled drawings and mounting arrangements. Testing submittals for pre-installation and post-installed cables as specified. Informational Submittals: 1. 2. Manufacturer’s statement that installer is certified to perform installation Work. Subcontractor Qualifications: a. FOCS Subcontractor: Minimum of 5 years’ experience providing, integrating, installing, and commissioning of similar systems. 1) Statement of Experience: List of at least three fiber optic data communications systems comparable to system specified which have been furnished and placed into operation. For each system, provide following information: a) Owner’s name, address, telephone number, and name of current operations supervisor or other contact. b) Description of system hardware configuration, including major equipment items, number of nodes, and communication standards implemented. c) System block diagram. d) Dates when contract was signed, equipment was delivered, and system was accepted by Owner. Also, include originally scheduled completion date and if different from actual date, explain why. e) Approximate value of listed FOCS provided in dollars. f) Detailed horizontal and riser routing. g) Distribution frame arrangements. h) Fiber and termination identification, including spares. b. FOCS Subcontractor’s Site Representative: Minimum of 5 years’ experience installing similar systems. c. Qualification of Personnel: 1) Resumes identifying management and technical qualifications of supervisory, local service representative, and key personnel. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-6 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA Fiber Optic Communication System 2) 3. 4. 5. 6. 1.05 Qualification data of firm and persons to demonstrate capabilities and experience in the following areas: a) Fiber optic cable handling and placement techniques. b) Fiber optic splicing and installation of connections. c) Attenuation testing procedures. d. Owner acceptance of FOCS Subcontractor does not exempt FOCS Subcontractor or Contractor from meeting Contract Document requirements nor does it give prior acceptance of subsystems, equipment, materials, or services. e. Sample of Network Test Report, minimum 10 pages, that Contractor generated in a previous project. f. Testing and acceptance plan, 30 days prior to beginning of testing. g. Fiber test results. Documentation covering fiber facility testing, not later than 2 days after testing, showing: 1) Manufacturer’s tag of attenuation per fiber as recorded from OTDR reading before shipment. 2) Attenuation of each fiber upon delivery to Site. 3) Attenuation of each fiber plus connector after installation as recorded from OTDR with tracing. 4) Flux Budget calculations with comparison to measured attenuation for each run verifying adequate optical signal strength. h. For each maintenance organization, identify location of base of service and how required coverage will be achieved. Manufacturer’s Certificate of Compliance, in accordance with Section 01640, Manufacturers’ Field Services. Manufacturer’s suggested installation practice. Testing related submittals. Operation and Maintenance Data: a. As specified in Section 01430, Operation and Maintenance Data. b. Include the following information as a minimum in addition to the requirements in 01430, Operation and Maintenance Data: 1) All Submittal Data information revised for as-built conditions. 2) Manufacturer’s user’s manuals and installation instructions. 3) As-Built Drawings. 4) Fiber Optic Cable test results. ENVIRONMENTAL REQUIREMENTS A. Optical Fiber Cable and Cable Splice Centers: 1. 2. 3. 4. Outside, Underground/Submerged: Minus 20 degrees C to 40 degrees C. Outside, Overhead: Minus 40 degrees C to 80 degrees C. Outside, Aboveground in Conduit: Minus 40 degrees C to 80 degrees C. Inside: 0 degree C to 40 degrees C. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-7 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA B. Equipment: 1. 2. 3. 1.06 Fiber Optic Communication System Outside, Aboveground: Minus 40 degrees C to 80 degrees C. Control Rooms, Equipment Rooms, and Telecommunications Closets: 30 percent to 55 percent relative humidity, 18 degrees C to 24 degrees C. Other Interior Areas: 0 percent to 100 percent relative humidity, 5 degrees C to 35 degrees C. QUALITY ASSURANCE A. Manufacturer Qualifications: 1. 2. 3. 4. B. Installer Qualifications: 1. 2. C. Individuals with at least 5 years of experience with projects utilizing fiber optic cable in compliance with TIA 568-C.3. Certified by fiber cable manufacturer. Tester Qualifications: Individuals with at least 3 years of experience with projects utilizing fiber optic cable in compliance with TIA 568-C.3. 1. D. Cable: a. ISO 9001 or QF TL 9000 registered, whichever applies to material. b. Minimum of 20 years in manufacturing optical fiber cable in order to demonstrate reliable field performance. Housing: ISO 9001 and QF TL 9000 registered. Connector: a. ISO 9001 or QF TL 9000 registered. b. Minimum 10-year history of manufacturing and supporting connector technology that does not require epoxy or polishing in field. Jumper Cable: ISO 9001 and QF TL 9000 registered. Technician: Successfully attended training program, which includes testing with an OLTS and an OTDR and have obtained a certificate as proof thereof. Certificate may have been issued by the following organizations or an equivalent organization: a. Manufacturer of fiber optic cable and fiber optic connectors. b. Manufacturer of test equipment used for field certification. c. Other independent training organizations acceptable to Owner. Provide connectors/coupling, splicing enclosures, mounting hardware, and miscellaneous accessories for fibers by same manufacturer. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-8 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 1.07 SPECIAL GUARANTEE A. 1.08 Provide manufacturer’s extended guarantee or warranty, with Owner named as beneficiary, in writing, as special guarantee. Special guarantee shall provide for correction, or at option of Owner, removal and replacement of Work specified in this specification section found defective during a period of 5 years after date of Substantial Completion. Duties and obligations for correction or removal and replacement of defective Work shall be as specified in General Conditions. EXTRA MATERIALS A. PART 2 2.01 Fiber Optic Communication System Furnish, tag, and box for shipment and storage the following materials: Item Quantity Jumpers of each length needed One complete set PRODUCTS FIBER OPTIC CABLE A. Single-Mode: 8.3/125-micron Class IVa dispersion-unshifted optical fibers for use in the backbone distribution subsystem shall meet or exceed requirements of TIA 568-C.3, including the following specifications: 1. 2. 3. 4. B. General: 8.3/125-micron, graded-index for use in backbone and horizontal distribution subsystems, meets or exceeds the requirements of TIA 568-C.3, including the following Specifications: ISO/IEC 11801 Type: OS2. Maximum Mean Fiber Loss: a. 0.4 dB per km at 1310 and 1383 nm. b. 0.3 dB per km at 1,500 nm. Distance Capacity per IEEE 802.3: a. 1 Gbit Ethernet: 5000m at 1310, 1383 and 1550 nm. Single Mode Fiber Optic Cable 1. Fiber Characteristics: Single-Mode. a. Comply with TIA/EIA 568. b. 8.3/125 m glass single-mode. c. Tight-buffered, 900 m buffer: 1) Inner buffer: Acrylate, UV-cured, soft. 2) Outer buffer: PVC, elastomeric, hard. d. Maximum Attenuation: 1310/1550 nm: 0.5 dB/km. e. Low Water Peak. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-9 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 2. 2.02 Fiber Optic Communication System f. Color-coded buffer. g. Minimum Bend Radius, Buffered Fiber: 1 inch. h. Proof Testing: 100 kpsi. Cable: a. Fiber Count: 1) Single-Mode: 12 fibers per cable or as noted on Drawings. b. All Dielectric Construction: No electrically conductive components in fiber optic cable are allowed. c. Helically Wound: Buffered fibers helically wound; approximately 5 turns per meter. d. Gel-Free: Fibers tight-buffered, not in gel-filled loose-tube. e. Core-Locked with no separator tape. f. Style: Distribution. g. Provide breakout cable suitable for direct fiber termination using standard connectors. h. Distribution Strength Member: 1) Nonconductive; integral part of cable; supports stress of installation and load during use. 2) Fiberglass epoxy rod, aramid fiber, kevlar. 3) Minimum Tensile Strength: 130/400 pounds longterm/short-term respectively. i. Protective Covering: 1) High temperature plenum fluoropolymer. 2) Continuous and free from holes, splices, blisters, and other imperfections. 3) Oil, chemical, water, and UV resistant. j. Minimum Bend Radius: 1) Short-term under Tension: 20 times cable diameter. 2) Long-term without Tension: 15 times cable diameter. k. Identification: 1) Identify with tags shown and in accordance with Section 16010. 2) Use waterproof tags and identifications. l. Special Features: 1) Plenum rated flame-retardant. m. Manufacturer: 1) Optical Cable Corporation, SLX Fiber. 2) Corning. MULTIMODE FIBER OPTIC CABLE A. General: 50/125-micron, graded-index for use in backbone and horizontal distribution subsystems, meets or exceeds the requirements of TIA 568-C.3, including the following specifications: N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-10 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 1. 2. 3. 4. 5. 6. Fiber Optic Communication System ISO/IEC 11801 Type: OM2. Maximum Mean Fiber Loss: a. 3.0 dB per km at 850 nm. b. 1.0 dB per km at 1,300 nm. Minimum OFL Bandwidth: a. 700 MHz•km minimum at 850 nm. b. 500 MHz•km minimum at 1300 nm. Distance Capacity per IEEE 802.3: a. 1 Gbit Ethernet: 750m at 850 nm and 600m at 1300 nm.Type, Armored. Fiber Characteristics: Multimode a. Comply with TIA/EIA 568. b. 50/125 m graded-index glass. c. Tight-Buffered, 900 m buffer: 1) Inner buffer: Acrylate, UV-cured, soft. 2) Outer buffer: PVC, elastomeric, hard. d. Maximum Attenuation: 1) 850 nm: 3.5 dB/km. 2) 1300 nm: 1.0 dB/km. e. Minimum Bandwidth: 1) 850 nm: 200 MHz-km. 2) 1300 nm: 500 MHz-km. f. Color-coded buffer. g. Minimum Bend Radius, Buffered Fiber: 1 inch. h. Proof Testing: 100 kpsi. Cable: a. Fiber Count: 1) Multimode Distribution: As noted on drawings, 6 fibers per cable, minimum. b. All Dielectric Construction: No electrically conductive components in fiber optic cable are allowed. c. Helically Wound: Buffered fibers helically wound; approximately 5 turns per meter. d. Gel-Free: Fibers tight-buffered, not in gel-filled loose-tube. e. Core-Locked with no separator tape. f. Style: Distribution, indoor/outdoor. g. Strength Member: 1) Nonconductive; integral part of cable; supports stress of installation and load during use. 2) Fiberglass epoxy rod, aramid fiber, kevlar. 3) Minimum Tensile Strength: 500 pounds. h. Protective Covering: 1) Fluoropolymer, plenum and indoor/outdoor rated. 2) Continuous and free from holes, splices, blisters, and other imperfections. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-11 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA i. j. k. l. 2.03 Fiber Optic Communication System Minimum Bend Radius: 1) Short-Term under Tension: 20 times cable diameter. 2) Long-Term without Tension: 15 times cable diameter. Identification: 1) Identify with tags shown and in accordance with Section 16050. 2) Use waterproof tags and identifications. Special Features: Plenum rated flame-retardant. Manufacturer: 1) Optical Cable Corporation. 2) Corning. FIBER OPTIC PATCH PANELS A. Fiber Optic Patch Panel, Rackmount: 1. 2. 3. B. Function: Provides industry-standard rack mounting system for interface between fiber optic backbone and equipment cables. Features: a. Used in either cross-connect or interconnect configuration. b. 23-inch rack for mounting 19-inch rack mount units. 1) Accommodates up to 576 fiber terminations per frame. 2) Accepts connector module housing and splice housing within same rack. 3) Fiber Optic Connectors: LC-duplex. c. Fiber/Wire Management System: 1) Vertical: 3-inch by 4-inch supports on 8-inch centers vertically on four sides (front LHS, back LHS, front RHS, back RHS). 2) Horizontal: Supports on 4-inch centers horizontally above and below each termination frame front and back. Support may serve frames immediately above and below. d. Mounting Hardware: Accepts standard 19-inch rack for integrated fiber optic system (i.e. hubs, routers, patch panels, etc.). e. Splice Trays with Coil Former: Former to wind slack cable around, provides controlled long radius bends. 1) Doors: Pivot down lockable. 2) Foot and End Caps: Included in final, assembled unit. 3) Ancillaries: Jumper troughs and covers, cable tie brackets. Manufacturers: a. Ortronics. b. Siemon. c. Corning. Fiber Optic Patch Panels, Surface Mount: 1. Function: Provides a secure place to terminate fiber optic cables. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-12 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 2. 3. C. Features: a. Compartments: Two; one for fiber optic cable, one for jumpers to individual equipment. b. Coil Former: Former to wind slack cable. Provides controlled long-radius bends. c. Connectors: Minimum 24 LC-duplex connectors for entry and exit. d. Size: Maximum 12 inches by 12 inches by 4 inches. e. Construction: 1.5-millimeter steel with noncorrosive finish. f. Mountings: Suitable for permanent attachment as shown, or provide separate mountings that do not obscure covers and doors. Manufacturers and Products: a. Ortronics. b. Siemon. c. Corning. Fiber Optic Patch Panels, DIN Rail Mount: 1. 2. 3. 2.04 Fiber Optic Communication System Function: Provides a secure place to terminate fiber optic cables. Features: a. Compartments: One, removable. b. Connectors: Minimum 12 LC-duplex connectors for entry and exit. c. Size: Nominally 6 inches by 5 inches by 3 inches. d. Construction: 1.5-millimeter steel with noncorrosive finish. e. Mountings: Suitable for DIN Rail Mounting. Manufacturers and Products: a. DINSpace, SNAP. b. Approved Equal. CONNECTORS A. General: 1. 2. 3. 4. 5. 6. Comply with TIA/EIA 604-2, TIA/EIA 604-3, TIA/EIA 604-12, and TIA 568-C.3. LC connectors suitable for size and type of fiber being connectorized. Pull Strength: 10 pounds on jacketed cables and 0.5 pounds on 900 micron fiber, minimum. Durability: Sustain minimum 500 mating cycles without violating other requirements. a. Ferrules: Free-floating low loss ceramic. b. Polish: Ultra Physical Contact (UPC). Attenuation: a. Typical: 0.2 dB per pair. b. Maximum: 0.5 dB per pair. Manufacturer: N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-13 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA a. b. c. 2.05 General: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. In accordance with TIA 568-C.3. Function: Connect fiber centers to network nodes, such as computer workstations. Fiber Characteristics: In accordance with requirements for fiber optic cable. Cable Configuration: a. Individual tight-buffer thermoplastic, fibers single or multimode, to match fibers being jumpered on. b. Protected with kevlar strength members and enclosed in thermoplastic jacket. Length: Standard, to meet requirements shown, plus minimum 3 meters at workstations. Connectors: a. As required by Article Connectors. b. On-axial Pull Strength: 33 N. c. Normal-to-Axial Pull Strength: 22 N. Cable Rating: OFNR or OFNP. Color: Per standards or as indicated. Measured for insertion loss with the following values for each connector: a. Typical of 0.3 dB and maximum of 0.5 dB (LC typical of 0.1 dB and maximum of 0.3 dB). Manufacturers: a. Ortronics. b. Corning. c. Tripp-Lite. CONDUIT A. 2.07 Optical Cable Corporation. Corning. AMP. PATCHCORDS A. 2.06 Fiber Optic Communication System In accordance with Section 16110, Raceway. ACCESSORIES A. Hardware: Provide cable clamps, strain reliefs, blocking and grommet kits, closures, and fan outs for complete installation. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-14 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA PART 3 3.01 EXECUTION PREPARATION A. Conduit are provided under Division 26, Electrical: 1. 2. 3. 3.02 Fiber Optic Communication System Ensure installed conduit system conforms to fiber optic system requirements, including: a. Conduits and Innerducts: Size and number. b. Access Holes, Handholes, and Pull Boxes: Location and size, to ensure cables and innerducts may be installed without exceeding manufacturer’s limitations. c. Outlet Boxes: Size to coordinate with outlet cover plates for adequate volume and bend radius. Spare Conduit: a. No cables shall be pulled into spare conduit. b. 100 percent spare conduit capacity required for buried conduit only. For example, for every conduit with one or more cables in it, there shall be one spare equal-size conduit with no cables. c. Spare conduits need not have innerduct installed. Expansion Plugs: Seal conduit to stop ingress of water and grit with fabricated expansion plugs. INSTALLATION A. Fiber Optic Cable: 1. 2. 3. 4. 5. 6. 7. 8. 9. Specified fiber counts, routing, origination, and terminating points are indicated on Drawings. Installation by manufacturer certified installer under Division 26, Electrical. Install cables in accordance with manufacturer’s requirements Install cable directly from shipping reels. Ensure that cable is not: a. Dented, nicked, or kinked. b. Subjected to pull stress greater, or bend radius less, than manufacturer’s specification. c. Subjected to treatment that may damage fiber strands during installation. Cables per Conduit: In accordance with NEC conduit fill limitations. If calculation indicates that cable will attenuate signals more than 8 dB, reroute may be allowed, if approved by Contractor. Splices: Install fiber optic cables in unspliced lengths from fiber centers to switches or hubs. Identification: Identify cable on both ends and in access holes and pull points it goes through. Sealing: Seal cables into innerducts to stop ingress of water and grit with fabricated expansion plugs. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-15 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 10. B. Install securely in field panels as shown. Minimum, one per facility having one or more network nodes. Cable Terminations: 1. 2. 3. 4. 5. 6. 3.03 Access Holes: a. Provide supports for cables in access and handholes. b. While maintaining minimum bend radius, lace cables neatly to supports to keep them out of way of personnel. Fiber Optic Patch Panels: 1. 2. C. Fiber Optic Communication System In accordance with TIA 568-C.3. Fan out fiber cable to allow direct connectorization of connectors. a. Sleeve over individual fibers with transparent furcation tubes. b. At point of convergence of furcation tubes, provide strain relief with metal or high density plastic fan-out collar. Break-out Kits: a. Terminate cables using manufacturer-supplied break-out kits. b. Terminate in accordance with manufacturer’s recommendations. Slack: a. Fiber Centers, Hubs, and Switches: Minimum, 3-meter slack fiber at each end, coiled neatly in cable management equipment. b. Communications Management Outlets: Minimum, 1-meter slack fiber, coiled neatly in outlet box. Connectors: a. Terminate 100 percent fibers in each cable to specified connector. b. Connect into fiber management system. Conduit: Install in accordance with Section 16110, Raceway. LABELING CONVENTIONS A. Conform to TIA 606 or to requirements specified by Owner or Owner’s representative. B. Backbone (Riser) Cables: 1. Multiconductor cables connecting main distribution field to an intermediate distribution field, usually a wiring closet or cabinet, and are labeled at each terminating end. Label name identifies each endpoint, cable medium, and number of conductors as follows: a. Copper: IDF-MDF-C-PPP-N. b. Fiber: IDF-MDF-F-MMM, SSS-N. Where: IDF Is the 3-5 position IDF/wiring closet/building code N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-16 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA MDF F PPP MMM SSS N C. Fiber Optic Communication System Is the 3-5 position MDF (or IDF) code Fiber Is pair count of a copper cable Is multimode strand count Is single-mode strand count Is a sequential number Horizontal (Station) Cables: 1. Connect jack stations to wiring closets or cabinets and are labeled at each end to identify wiring closet they connect to and sequential jack station number as follows: a. Data: IDF-D-NNN-A/B. b. Voice: IDF-V-NNN-A/B. Where: IDF Is the 3-5 position IDF/wiring closet/building code D Data cable (green) V Voice cable (gray) NNN Is the sequence number A/B Indicates left or right port in faceplate D and V are provided above for reference. Coordinate types and colors with the Owner. 3.04 FIELD QUALITY CONTROL A. General: 1. 2. 3. 4. 5. 6. 7. Advise Engineer at least 48 hours in advance of each test. Engineer shall have option to witness and participate actively in tests. In accordance with Section 01650, Facility Startup. Provide equipment, instrumentation, supplies, and skilled staff necessary to perform testing. Outlets, cables, patch panels, and associated components shall be fully assembled and labeled prior to field testing. Testing performed on incomplete systems shall be redone on completion of the Work. Document Test Results: a. Confirm each cable has at least specified number of fibers that meet standards, in accordance with As-Built Fiber Optic Cable Installation form included as Supplement to this section. Confirm quantities and sizes of conduit and innerduct, in accordance with As-Built Conduit/Innerduct Installation form included as Supplement to this section. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-17 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA B. Fiber Optic Communication System Test Equipment: 1. 2. 3. Field test instruments shall have latest software and firmware installed. Optical Fiber Cable Testers: a. Field test instrument shall be within calibration period recommended by manufacturer. b. Optical Loss Test Set (OLTS): 1) Single-mode Optical Fiber Light Source: a) Provide dual laser light sources with central wavelengths of 1,310 nm (plus or minus 20 nm) and 1,550 nm (plus or minus 20 nm). b) Output Power: Minus 10 dBm, minimum. c) Manufacturer: Fluke Networks. 2) Multimode Optical Fiber Light Source: a) Provide dual LED light sources with central wavelengths of 850 nm (plus or minus 30 nm) and 1,300 nm (plus or minus 20 nm). b) Output Power: Minus 20 dBm minimum. c) Meet launch requirements of TIA/EIA 455-78. This launch condition can be achieved either within the field test equipment or by use of an external mandrel wrap, as described in Clause 11 of TIA 568-C.3, with Category 1 light source. d) Manufacturer: Fluke Networks. 3) Power Meter: a) Provide 850 nm, 1,300/1,310 nm, and 1,550 nm wavelength test capability. b) Power Measurement Uncertainty: Plus or minus 0.25 dB. c) Store reference power measurement. d) Save at least 100 results in internal memory. e) PC interface (serial or USB). f) Manufacturer: Fluke Networks. 4) Optional Length Measurement: Capable of measuring optical length of fiber using time-of-flight techniques. Optical Time Domain Reflectometer (OTDR): a. Bright, color transmissive LCD display with backlight. b. Rechargeable for 8 hours of normal operation. c. Weight with battery and module of not more than 4.5 pounds and volume of not more 200 cubic inches. d. Internal nonvolatile memory and removable memory device with at least 16 MB capacity for results storage. e. Serial and USB ports to transfer data to PC. f. Single-mode OTDR: N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-18 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA Fiber Optic Communication System 1) 4. 5. C. Conduit Test: 1. 2. 3. D. Wavelengths: 1,310 nm (plus or minus 20 nm) and 1,550 nm (plus or minus 20 nm). 2) Event Dead Zone: 2 meters maximum at 1,310 nm and 2 meters maximum at 1,550 nm. 3) Attenuation Dead Zone: 15 meters maximum at 1,310 nm and 15 meters maximum at 1,550 nm. 4) Distance Range: Minimum 10,000 meters. 5) Dynamic Range: Minimum 10 dB at 1,310 nm and 1,550 nm. g. Multimode OTDR: 1) Wavelengths: 850 nm (plus or minus 20 nm) and 1,300 nm (plus or minus 20 nm). 2) Event Dead Zone: 1 meter maximum at 850 nm and 2 meters maximum at 1,300 nm. 3) Attenuation Dead Zone: 6 meters maximum at 850 nm and 15 meters maximum at 1,300 nm. 4) Distance Range: 2,000 meters minimum. 5) Dynamic Range: Minimum 10 dB at 850 nm and 1,300 nm. h. Manufacturer: Fluke Networks. Fiber Microscope: a. Magnification: 250X or 400X for end-face inspection. b. Manufacturer: Fluke Networks. Integrated OLTS, OTDR, and Fiber Microscope: a. Test equipment that combines into one instrument such as OLTS, OTDR, and fiber microscope may be used. b. Manufacturer: Fluke Networks. Test and seal spare conduits. Conduit and Innerduct Testing: a. Blow full-diameter mouse through each spare conduit and innerduct to verify they are unrestricted over full length. b. If conduit is restricted over full length, advise Engineer. Documentation: Confirm conduit test As-Built Conduit/Innerduct Installation form documentation includes details of innerducts. Cable Testing: 1. Test procedures and field test instruments shall comply with applicable requirements of: a. LIA Z136.2. b. TIA/EIA 455-78. c. TIA/EAI 455-133. d. TIA 526-7. e. TIA 526-14. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-19 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 2. 3. 4. 5. 6. 7. E. Fiber Optic Communication System f. TIA 568-C.1. g. TIA 568-C.3. h. TIA TSB 140. Test attenuation and polarity of installed cable plant with OLTS and installed condition of cabling system and its components with OTDR. Verify condition of fiber end face. Perform on each cabling link (connector to connector). Perform on each cabling channel (equipment to equipment). Do not include active devices or passive devices within link or channel other than cable, connectors, and splices. For example, link attenuation does not include such devices as optical bypass switches, couplers, repeaters, or optical amplifiers. Document Tests: a. OLTS dual wavelength attenuation measurements for single-mode and multimode links and channels. b. OTDR traces and event tables for single-mode and multimode links and channels. Fiber Testing Parameters: 1. Each cabling link shall be in compliance with the following test limits: a. Optical Loss Testing: 1) Backbone (single-mode and multimode) Link: a) Calculate link attenuation by the formulas specified in TIA 568-C.1. b) Values for Attenuation Coefficient (dB/km) are listed in the table below: Attenuation Coefficient Wavelength (nm) Attenuation Coefficient (dB/km) Wavelength (nm) Attenuation Coefficient (dB/km) Single-mode 1310 0.5 1550 0.5 Multimode 50/125 µm 850 3.5 1300 1.5 Type of Optical Fiber b. c. F. OTDR Testing: 1) Reflective Events: Maximum 0.75 dB. 2) Nonreflective Events: Maximum 0.3 dB. Magnified Endface Inspection: 1) Visually inspect fiber connections for end-face quality. 2) Scratched, pitted, or dirty connectors shall be diagnosed and corrected. Diagnosis and Correction: N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-20 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 1. 2. 3. 4. Fiber Optic Communication System Installed cabling links and channels shall be field tested and pass test requirements and analysis as described herein. Link or channel that fails these requirements shall be diagnosed and corrected. Document corrective action and follow with new test to prove corrected link or channel meets performance requirements. Provide final and passing result of tests for links and channels. G. Acceptance: Acceptance of test results shall be given in writing after Project is tested and completed in accordance with Contract Documents and satisfaction of Owner. H. Test Execution: 1. 2. Optical Fiber Cable Testing: a. Tests performed that use laser or LED in test set shall be carried out with safety precautions in accordance with LIA Z136.2. b. Link and channel test results from OLTS and OTDR shall be recorded in test instrument upon completion of each test for subsequent uploading to a PC in which administrative documentation may be generated. 1) Record end-face images in memory of test instrument for subsequent uploading to a PC and reporting. c. Perform Testing: 1) On each cabling segment (connector to connector). 2) On each cabling channel (equipment to equipment). 3) Using high-quality test cords of same fiber type as cabling under test. a) Test cords for OLTS testing shall be between 1 meter and 5 meters in length. b) Test cords for OTDR testing shall be approximately 100 meter for launch cable and at least 25 meters for receive cable. Optical Loss Testing (OLTS): a. Backbone Link: 1) Test single-mode at 1,310 nm and 1,550 nm in accordance with TIA 526-7, Method A.1, One Reference Jumper or equivalent method. 2) Test multimode at 850 nm and 1,300 nm in accordance with TIA 526-14A, Method B, One Reference Jumper or equivalent method. 3) Perform tests in both directions. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-21 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 3. 4. 5. 6. Fiber Optic Communication System OTDR Testing: a. Test backbone, horizontal, and centralized links at appropriate operating wavelengths for anomalies and to ensure uniformity of cable attenuation and connector insertion loss. 1) Single-mode: 1,310 nm and 1,550 nm. 2) Multimode: 850 nm and 1,300 nm. b. Test each fiber link and channel in one direction. c. Install launch cable between OTDR and first link connection. d. Install receive cable after last link connection. Length Measurement: 1) Record length of each fiber. 2) Measure optical length using OLTS or OTDR. Polarity Testing: a. Test paired duplex fibers in multifiber cables to verify polarity in accordance with subclause 10.3 of TIA/EIA 568-C.1. b. Verify polarity of paired duplex fibers using OLTS. Test Results Documentation: a. Test results saved within field-test instrument shall be transferred into Windows-based database utility that allows for maintenance, inspection, and archiving of test records. These test records shall be uploaded to the PC unaltered. For example, “as saved in the field-test instrument.” The file format, CSV (comma separated value), does not provide adequate protection of these records and shall not be used. b. Available for inspection by Owner or Owner’s representative during installation period. Submit within 5 working days of completion of tests on cabling served by a telecommunications room or of backbone cabling. c. Database for project, including twisted-pair copper cabling links, if applicable, shall be stored and delivered on CD-ROM prior to Owner acceptance of building. CD-ROM shall include software tools required to view, inspect, and print test reports. d. Circuit IDs reported by test instrument shall match specified label identification. e. Provide in electronic database for each tested optical fiber with the following information: 1) Identification of Site. 2) Name of test limit selected to execute stored test results. 3) Name of personnel performing test. 4) Date and time test results were saved in memory of tester. 5) Manufacturer, model, and serial number of field test instrument. 6) Version of test software and version of test limit database held within test instrument. 7) Fiber identification number. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-22 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 8) 9) 10) 11) 12) I. Length for Each Optical Fiber: Optionally the index of refraction used for length calculation when using a length capable OLTS. Test results to include OLTS attenuation link and channel measurements at appropriate wavelength and margin; difference between measured attenuation and test limit value. Test results to include OTDR link and channel traces, and event tables at appropriate wavelength. Length for each optical fiber as calculated by the OTDR. Overall pass/fail evaluation of link-under-test for OLTS and OTDR measurements. Drawings: 1. 2. 3.05 Fiber Optic Communication System Record Copy: Provide at end of Project on CD-ROM. a. CAD format and include notations reflecting as-built conditions of additions and variations from Drawings provided, such as to cable path and termination point. b. CAD drawings are to incorporate test data imported from test instruments. As-built Drawings: a. Include, but not limited to block diagrams, frame and cable labeling, cable termination points, equipment room layouts, and frame installation details. b. Include field changes made up to construction completion: 1) Field directed changes to pull schedule. 2) Field directed changes to cross connect and patching schedule. 3) Horizontal cable routing changes. 4) Backbone cable routing or location changes. 5) Associated detail drawings. TRAINING A. Train Owner’s staff in the following skills: 1. 2. 3. Connectorizing fibers. Splicing optical fiber cables, including fiber splices. Testing quality of connectors, splices and fibers. B. Schedule: Provide one 8-hour training session, to suit Owner’s schedule. C. Materials: Provide hardware for training, including fibers, connectors, and splice kits. N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-23 FEBRUARY 7, 2014 Richmond Water Treatment Plant Sedimentation Basin Improvement Projects Department of Public Utilities City of Richmond, VA 3.06 Fiber Optic Communication System SUPPLEMENTS A. Supplements listed below, following “End of Section,” are part of this Specification. 1. 2. As-Built Fiber Optic Cable Installation Form. As-Built Conduit Installation Form. END OF SECTION N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-24 FEBRUARY 7, 2014 PROJECT: Boyette Reservoir Contractor: Signed by: AS-BUILT FIBER OPTIC CABLE INSTALLATION Sheet 1 of 2 Cable Identification: Routing: From: In: (Identify field panel, control room, etc. in building) Through: 1 (Identify access hole, building, gallery, etc.) Through: 2 Through: 5 Through: 3 Through: 6 Through: 4 Through: 7 To: In: See As-Built Conduit Installation forms for identification of conduits cable is routed through. Acceptable Attenuation: Multimode Fibers 850 nm: 1300 nm: cable length* 3.5 dB/km x km + 1.5 dB = 1.0 dB/km x km + 1.5 dB = dB dB *Contractor to provide actual length installed, within ±0.1 km. Measured Attenuation (dB) Hub-to-Node Fiber ID Use/Spare 850 nm 1,300 nm Node-to-Hub 850 nm 1,300 nm N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-25 FEBRUARY 7, 2014 Sheet 2 of 2 Single-mode Fibers 1310 nm: 1550 nm: cable length* 0.5 dB/km x km + 1.5 dB = 0.5 dB/km x km + 1.5 dB = dB dB *Contractor to provide actual length installed, within ±0.1 km. Measured Attenuation (dB) Hub-to-Node Fiber ID Use/Spare 1,310 nm 1,550 nm Node-to-Hub 1,310 nm 1,550 nm N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-26 FEBRUARY 7, 2014 PROJECT: Boyette Reservoir Contractor: Signed by: AS-BUILT CONDUIT INSTALLATION From: To: (Identify building, access hole, field panel, etc.) Sheet 1 of 1 Conduits: Used: 4 inches; 2 inches Spare: 4 inches; 2 inches Confirm all spares unrestricted: Yes/No (Provide number of conduits in each category) Conduit ID Cable ID / Spare (Continued overleaf delete if not applicable) END OF SUPPLEMENT N:\46491-000\ENGINEERING\ADV_BID\ADDENDA\ADDENDUM 4\16947 FIBER OPTIC COMMUNICATION SYSTEM ADDENDUM NO 4.DOCX 16947-27 FEBRUARY 7, 2014