University:
University of Houston
Course:
PHYS 4356 | Particle and Nuclear Physics
Academic year:

2022
Views:

499

Pages:

10
Author:

shenkhort84o3

< #> SECTION 27 0526 ‐ GROUNDING AND BONDING FOR COMMUNICATIONS SYSTEMS Revise this Section by deleting and inserting text to meet Project‐specific requirements. This Section uses the term "Architect" or “Engineer.” Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions. Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed. Delete hidden text after this Section has been edited for the Project. PART 1 ‐ GENERAL 1.1 RELATED DOCUMENTS A. The Contractor's attention is specifically directed, but not limited, to the following documents for additional requirements: 1. 2. 3. 1.2 The current version of the Uniform General Conditions for Construction Contracts, State of Texas available on the web site of the Texas Facilities Commission. The University of Houston’s Supplemental General Conditions and Special Conditions for Construction. The University of Houston Network Infrastructure Design Guidelines (available at https://uh.edu/infotech/services/computing/networks/network‐infra‐standards/). SUMMARY A. Section Includes: 1. 2. 3. 4. 5. 6. Grounding electrodes and conductors. Equipment grounding conductors. Bonding for communications equipment. Communications system grounding. Electrical equipment and raceway grounding and bonding. Control equipment grounding. B. Work covered by this Section consists of furnishing labor, equipment, supplies, materials, and testing unless otherwise specified, and in performing the following operations recognized as necessary for the installation, termination, and labeling of grounding and bonding infrastructure for non‐electrical power as described on the Drawings and/or required by these specifications. C. This section pertains only to communications equipment installations. For electrical systems, refer to 26 0526 Grounding and Bonding for Electrical Systems. Revise subparagraph(s) below to suit Project. AE Project #: <> Grounding and Bonding ‐ Communications Systems UH Master: 03.2020 27 0526 ‐ 1 < #> 1.3 REFERENCES A. American Society for Testing and Materials (ASTM): 1. 2. 3. B. Institute of Electrical and Electronics Engineers (IEEE): 1. 2. C. 142‐2007 Recommended Practice for Grounding of Industrial and Commercial Power Systems 1100‐2005 Recommended Practice for Powering and Grounding Electronic Equipment Underwriters' Laboratories (UL): 1. 2. 3. 4. D. B3‐13(2018) — Soft or Annealed Copper Wire B8‐11(2017) — Concentric‐Lay‐Stranded Copper Conductors, Hard, Medium‐Hard, or Soft B33‐10(2020)e1 — Tin‐Coated Soft or Annealed Copper Wire for Electrical Purposes 83 Thermoplastic Insulated Wire and Cables 96 Lightning Protection Components 96A System Installation 467 Grounding and Bonding Equipment National Fire Protection Association (NFPA): 1. 2. 780 Lightning Protection Code 70 National Electrical Code (NEC) a. E. American National Standards Institute/Telecommunications Industry Association/Electronic Industries Alliance (ANSI/TIA/EIA): 1. 2. F. 1.4 J‐STD‐607‐A Commercial Building Grounding and Bonding Requirements. Telcordia – Network Equipment Building Systems (NEBS) GR‐1275. Building Industry Consulting Services International (BICSI): 1. 2. G. NEC Article No. 250 ‐ Grounding Telecommunications Distribution Methods Manual Customer Owned Outside Plant Design Manual Local, county, state and federal regulations and codes in effect as of date of “notice to proceed” shall be complied with. PREINSTALLATION MEETINGS A. Preconstruction Conference: Conduct conference at [Project site] . The Contractor and the Facilities Project Manager lead the meeting. The UIT Project Manager must be invited to the preinstallation meetings. Copy subparagraph below and edit for each activity required for preconstruction conference. 1. . AE Project #: <> Grounding and Bonding ‐ Communications Systems UH Master: 03.2020 27 0526 ‐ 2 < #> 1.5 SUBMITTAL ADMINISTRATIVE REQUIREMENTS A. 1.6 Follow the Submittal Administrative Requirements as stated in Section 01 3300 Submittal Procedures. For submittals to UIT, use electronic format only. ACTION SUBMITTALS A. 1.7 None. INFORMATIONAL SUBMITTALS A. Shop drawings B. Product data C. As‐built plans showing locations of infrastructure D. Qualification data for installers E. Qualification data for testing agency (if applicable) F. Field quality control reports in native format PART 2 ‐ PRODUCTS 2.1 PARTS AND MANUFACTURERS A. Refer to Section 01 2500 Substitution Procedures for variations from approved manufacturers or parts. Obtain written approval from UITNS before requesting a substitution for work covered by Division 27 Communications. B. GROUNDING BUSBARS 1. Chatsworth a. b. C. Telecommunications Main Grounding Busbar (TMGB) ‐ #10622‐012 ground busbar with #10622‐000 busbar insulators or equivalent Telecommunications Grounding Busbar (TGB) ‐ #10622‐012 ground busbar with #10622‐000 busbar insulators or equivalent GROUNDING JOINTS AND SPLICES 1. Grounding conductor joints/splices: mechanical type, copper alloy, with a minimum of two bolts and a separate section for each conductor a. Burndy 1) b. AE Project #: <> QPX OZ/Gedney Grounding and Bonding ‐ Communications Systems UH Master: 03.2020 27 0526 ‐ 3 < #> 1) 2) c. Penn‐Union 1) 2. Burndy T&B Blackburn Grounding conductor terminations (lugs): single barrel, mechanical screw type, copper alloy with machined contact surfaces a. OZ 1) b. c. 4. SL T&B Burndy Grounding conductor terminations (lugs): copper compression type with two (2) indents a. b. c. D. VX Grounding conductor joints/splices: copper compression type with two (2) indents a. b. c. 3. XTP PMX Burndy T&B Blackburn BONDING CONDUCTORS 1. Cable Tray Bonding Conductor: green #8 AWG insulated bonding jumper (12 inch max) with appropriate lugs or manufactured braided copper grounding jumper a. B‐Line 1) b. T&B 1) c. #BD12 OZ/Gedney 1) d. #CAM‐GJ type “FB” Mono‐Systems 2. Equipment Frame Bonding Conductor: green #8 AWG insulated bonding jumper 3. Telecommunications Bonding Backbone (TBB) a. Green insulated copper conductor, minimum size of No. 6 AWG 1) 2) Match the insulation fire rating to that of its pathway Size the TBB at 2 kcmil per linear foot of conductor length up to a maximum size of 3/0 AWG. TBB length (ft) AE Project #: <> TBB Size (AWG) Grounding and Bonding ‐ Communications Systems UH Master: 03.2020 27 0526 ‐ 4 < #> <13 14‐20 21‐26 27‐33 34‐41 42‐52 53‐66 > 66 4. 6 4 3 2 1 1/0 2/0 3/0 Bonding Conductor (BC) a. Green insulated copper bonding conductor 1) Minimum size is the same size as the TBB PART 3 ‐ EXECUTION 3.1 TELECOMMUNICATIONS INSTALLATION A. Grounding — General 1. 2. B. Bonding — General 1. 2. C. 2. 3. Install the TMGB at the bottom of plywood backboard near the outside plant entrance conduits in the MDF. Install the TMGB so that the BC for telecommunications is as short and straight as possible. Use continuous ¾‐inch conduit for the conductor. Installation of the TGB 1. 2. E. Use low‐impedance bonding to assure electrical continuity between bonded elements. Mechanically fasten all conduits that terminate to cable trays, wire ways and racks. When connected to a cable tray or rack, connect conduits with ground bushings, wire bonded to the tray or rack, and grounded to the main building grounding system or NF grounding bar using #6 AWG copper. Installation of the TMGB 1. D. Bond and ground equipment racks, cable trays, housings, messenger cables, raceways and rack‐mounted conduit. Connect cabinets, racks, cable trays and frames to single‐point ground that is connected to building ground system or NF grounding bar using #6 AWG green insulated copper grounding conductor. Install the TGB at the bottom of plywood backboard near the copper riser terminations in each IDF. Install the TGB so that the TBB for telecommunications is as short and straight as possible. Installation of the TBB AE Project #: <> Grounding and Bonding ‐ Communications Systems UH Master: 03.2020 27 0526 ‐ 5 < #> 1. F. 2. Install grounding at each cable tray joint. Install grounding from side of cable tray down to TMGB or TGB. Drill and tap side of cable tray (for appropriate size bolt, ¼ inch x 20 min.), making sure that bolt does not extend into wire management part of tray. Grounding of Equipment Frame 1. I. Install mechanical type, copper alloy, with a minimum of two bolts and a separate section for each conductor or copper compression type with two (2) indents. Install manufactured insulating cover or heavy tape insulation over joints/splices. Grounding of Cable Tray 1. 2. H. Install Green insulated copper grounding conductor from the TMGB to each TGB. Installation of Grounding Conductor Joints/Splices 1. G. Install grounding for the Equipment Frame. Grounding for Inter‐building Copper Cable 1. For building entrance protection for copper cabling, use a 2‐foot fuse link between outside plant cable plant splice and the protector module a. b. c. d. 2. 3. 4. J. IDC‐type input and output terminals 100 pair‐pair capacity Female mounting base, equipped with 230 volt, solid state protector modules Provide enough protector modules to completely populate all building entrance terminals. Bond the shield of all inter‐building backbone cables to the ground lug on the primary protector panel. Bond the protector panel to the TMGB. Bond the shield of all intra‐building backbone cables to the TMGB. Lightning Protection 1. 2. Furnish and install a building entrance terminal with a two (2) foot fuse link between the outside cable plant splice and the protector module, IDC‐type input and output terminals, 100‐pair capacity and female mounting base, equipped with 230‐volt, solid‐state protector modules. Provide sufficient protector modules to completely populate all building entrance terminals. Furnish and install lightning arrestors rated for 1 Gbps on copper cabling that exits a building and feeds outdoor APS, cameras or other network equipment. END OF SECTION 27 0526 AE Project #: <> Grounding and Bonding ‐ Communications Systems UH Master: 03.2020 27 0526 ‐ 6 < #> SECTION 27 0528 ‐ PATHWAYS FOR COMMUNICATIONS SYSTEMS Revise this Section by deleting and inserting text to meet Project‐specific requirements. This Section uses the term "Architect" or “Engineer.” Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions. Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed. Delete hidden text after this Section has been edited for the Project. PART 1 ‐ GENERAL 1.1 RELATED DOCUMENTS A. The Contractor's attention is specifically directed, but not limited, to the following documents for additional requirements: 1. 2. 3. 1.2 The current version of the Uniform General Conditions for Construction Contracts, State of Texas available on the web site of the Texas Facilities Commission. The University of Houston’s Supplemental General Conditions and Special Conditions for Construction. The University of Houston’s Network Infrastructure Design Standards (available at https://uh.edu/infotech/services/computing/networks/network‐infra‐standards/). SUMMARY A. Section Includes: 1. 2. 3. 4. 5. Interior communications pathways and supports. Outlets and conduit runs. Risers in Network Facilities (NFs). Grounding and bonding of pathways. Pathway firestopping requirements. Revise subparagraph(s) below to suit Project. 1.3 PREINSTALLATION MEETINGS A. Preconstruction Conference: Conduct conference at [Project site] . The Contractor and the Facilities Project Manager lead the meeting. The UIT Project Manager must be invited to the Preinstallation meetings. Copy subparagraph below and edit for each activity required for preconstruction conference. 1. . AE Project #: <> Pathways for Communications Systems UH Master: 03.2020 27 0528 ‐ 1 < #> 1.4 SUBMITTAL ADMINISTRATIVE REQUIREMENTS A. 1.5 Follow the Submittal Administrative Requirements as stated in Section 01 3300 Submittal Procedures. For submittals to UIT, use electronic format only. ACTION SUBMITTALS A. Provide Shop Drawings showing tray routing. Obtain University Information Technology Network Services (UITNS) approval before installation proceeds. B. Present solutions and Shop Drawings/submittals for firestop materials and systems to the Contractor for written approval of materials prior to purchase and installation. 1.6 INFORMATIONAL SUBMITTALS A. Provide As‐built plans showing locations of network infrastructure. PART 2 ‐ PRODUCTS 2.1 PARTS AND MANUFACTURERS A. Refer to Section 01 2500 Substitution Procedures for variations from approved manufacturers or parts. Obtain written approval from UITNS before requesting a substitution for work covered by Division 27 Communications. B. Pathways 1. Panduit a. C. Comfort Cradles 1. Tomarco/Stiffy a. b. c. d. D. 2‐inch 3.5‐inch 2‐inch 3.5‐inch FIG205‐122UH FIG205‐8UH FIG201‐2UH FIG201‐3UG Cable Tray 1. Cablofil a. b. E. J‐Hooks: J‐Pro 12‐inch x 2‐inch CF54 /300 EZ 12‐inch X 4‐inch CF105 / 300 EZ Fiber Optic Innerduct AE Project #: <> Pathways for Communications Systems UH Master: 03.2020 27 0528 ‐ 2 < #> 1. F. White or orange, plenum rated, UL Listed, flexible optical fiber/communications raceway, recognized per NEC Articles 770 and 800 for plenum areas for optical fiber and telecommunications cables. Trapeze Support Kits 1. Cooper B‐Line a. G. Wall‐mounted Brackets 1. Cooper B‐Line a. H. B409 Powered Fiber Cable Systems 1. CommScope a. b. c. d. e. f. g. h. i. j. 2.2 9G‐55XX‐22SH Powered Fiber Cable Indoor/Outdoor : PFC‐S04L12 Powered Fiber Cable Outdoor : PFC‐S04O12 Power Express Distribution Shelf w/Alarm Module: PFP‐PX‐S1 Power Express Distribution Module, Supports up to 8 Devices: PFP‐PX‐8M Power Express Blank Slot Panel: PFP‐PX‐SF SPS Rectifier Power Distribution Shelf: PFP‐SPS‐S1 1600W SPS Power Rectifier Module: PFP‐SPS‐1600M SPS Rectifier Controller Display: PFP‐SPS‐C1 SPS Rectifier Blank Slot Panel: PFP‐SPS‐SF 60W, 2 Port, PoE Extender: PFU‐P‐C‐O‐060‐02 CONDUITS AND FITTINGS A. For each communications outlet, provide a complete assembly of conduit, tubing or duct with fittings including, but not necessarily limited to, connectors, nipples, couplings, locknuts, bushings, expansion fittings and other components and accessories as needed to form a complete system of the type indicated. B. The minimum conduit size for telecommunications outlets shall be 1 inch. C. All sleeves shall be reamed and grommets placed prior to cable installation to prevent cable damage. 2.3 WALL AND CEILING OUTLET BOXES A. Provide outlet box accessories as required for each installation, including mounting brackets, wallboard hangers, extension rings, fixture studs, cable clamps and metal straps for supporting outlet boxes, compatible with the outlet boxes being used and meeting the requirements of each individual situation. AE Project #: <> Pathways for Communications Systems UH Master: 03.2020 27 0528 ‐ 3 < #> 2.4 PULL / JUNCTION BOXES A. 2.5 Provide pull boxes rated NEMA‐ 1 for telecommunications conduits in interior locations. For damp or wet locations such as plumbing chases or outdoors, provide pull boxes rated NEMA‐3R. PLENUM RATED FIBER OPTIC INNERDUCT A. Provide all fittings to form a complete, integrated raceway system. B. Install all fiber in 1 ¼‐inch corrugated, non‐metallic plenum‐rated innerduct when not installed in conduit or in utility tunnel tray. 1. 2. C. Fabrication 1. 2.6 Provide UL Listed innerduct with flame propagation compliant with UL 2024. Only manufacturer's fittings, transition adapters, terminators and fixed bends are to be used. Sequentially mark footage as specified in Section 27 0553 Identification for Communications Systems. CABLE TRAY SECTIONS AND COMPONENTS A. General: Provide metal cable trays of types, classes and sizes indicated, with splice plates, bolts, nuts and washers for connecting units. Construct units with rounded edges and smooth surfaces, in compliance with applicable standards and with the following additional construction features. B. Provide cable trays with a minimum 4‐inch usable load depth, or as noted on the Drawings. C. Straight tray sections shall have side rails fabricated as I‐Beams. Supply straight sections in standard 12‐foot lengths, except where shorter lengths are permitted to facilitate tray assembly lengths as shown on Drawings. D. Tray widths shall be 12 inches or as shown on Drawings. E. All fittings shall have a minimum radius of 24 inches. F. Provide bolted type splice plates for each tray type. The resistance of fixed splice connections between adjacent sections of tray shall not exceed .00033 ohms. Make splice plate construction in such a way that a splice may be located anywhere within the support span without diminishing rated loading capacity of the cable tray. G. Cable Tray Supports: Construct supports from 12 gauge steel formed shape channel members 1 ⅝ inch by 1 ⅝ inch with Trapeze Support Kits (9G‐55XX‐22SH) as manufactured by Cooper B‐ Line, Inc. Support cable trays installed adjacent to walls on wall‐mounted brackets B409 as manufactured by Cooper B‐Line, Inc. H. Support trapeze hangers supported by ½‐inch (minimum) diameter rods. AE Project #: <> Pathways for Communications Systems UH Master: 03.2020 27 0528 ‐ 4

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