DETAILED WIRING/INSTALLATION SPECIFICATIONS

1.      Technical Requirements

         Architecture/Topology Summary

         1.1   Provide all labor, materials, tools and equipment to install data wiring consistent with IEEE EIA/TIA 568B, TSB-36, TSB-40A and IEEE 802.3 100Base-T specification. Each data location will be provisioned with four pair category 5e UTP cable employing 568B termination using.

         1.2   A star or modified-star topology is required in the design of the distribution system.

         Transmission Media

         1.3   All cabling employed will meet or exceed the requirements and specifications for Category 5e, eight conductor, four pair unshielded twisted pair cable for LAN applications through data rates of 100 Mb/s.

         1.4   All voice grade cable used will meet or exceed requirements for Category 5e, eight conductor; four pair unshielded twisted pair cable.

         1.5   All cable used will be 24 AWG copper that adheres to communications application requirements for copper media as specified in NEC Section 800. All cable must meet UL listings standards for CM, CMR, CMP, CL2, and CL3.

         1.6   The wiring standard used for Data Jacks will be EIA/TIA 568B  .

         1.7   All network component hardware used in this installation will be certified by the manufacturer for data transport to 100 Mb/s.  All panels, cables, outlets, connectors, couplers, cords, and jumpers used in this installation will be provided and installed consistent with standards contained in EIA/TIA 568B, TSB-36, and TSB-40A.

2.      Connection Hardware and Design

         2.1   The cross connect hardware must be designed for flexibility to allow for future expansion and administration. The design for data network cabling will be based on AT&T 110 Jack panel system using standard 8 pin, 8-position modular jacks.  The design for voice cabling will be based on AT&T 110 cross connect system.

         2.2   Cross-connect hardware must be color coded to indicate the respective fields and source of terminating leads.  As follows:

                  Blue:         Wiring from workstation information outlets to cross connect system.

                  Green:      Wiring from workstation information outlets to cross connect system.

                  Gray:        Voice wiring from the information outlet to the cross connect system.

                  Yellow:     Circuits from the Central Office (TELCO)

                  Orange:   Circuits from the switch/PBX/KSU ports.

                  White:      House pairs from riser cables between the equipment room and satellite closets.

3.      Equipment Room

         3.1   Voice cross connect fields will be mounted on the wall in compliance with state and local codes.

         3.2   The data network cabling will terminate at a free standing or wall mounted rack. Unless otherwise noted, and space permitting, all main distribution frame (MDF) wiring closets will utilize 7-foot freestanding data racks (Technology must approve the placement of all racks.)  Where floor mount data racks are utilized, racks must be both bolted to floor and secured to walls and meet all code requirements for seismic conditioning.  At no time can racks, punch-down blocks or enclosures be secured to bare walls.  A fire treated, 3/4-inch minimum plywood backboard must be first installed.  All data racks must be grounded.

         3.3   Exposed wire pairs will be protected and meet NEC requirements before terminating at the cross connect field.

4.      Satellite Closet Design

         4.1   Satellite closet(s) or Intermediate Distribution Frame(s) will be located so that the maximum cable distance between Main closet or Main Distribution Frame and Intermediate Distribution Frame(s) does not exceed 600'.

         4.2   The data network cabling will terminate at a free standing or wall mounted rack. When utilizing wall mount racks at IDF wiring locations, utilize a "swing-style" wall mount data rack, preferably with a minimum of 36-inch high X 19-inch wide by 18-inch deep.  Racks must be mounted securely onto a fire treated 3/4-inch minimum plywood backboard.  Racks mounted to wall must not exceed the height of 6 feet. All data racks must be grounded.  Safety, security, and space utilization will be considered in the design of the Intermediate Distribution Frame(s).

         4.3   Exposed wire pairs will be protected and meet NEC requirements before terminating at the cross connect field.

5.      Information Outlets (Data Jacks)

         5.1   Information outlets will be wired with EIA/TIA 568B standards.

         5.2   RJ45 outlets will be used for voice and data drops.

6.      Installations Technique

         6.1   Where possible, and as the lowest cost solution, flush mounted wall outlets will be installed.

         6.2   Wiring is to be installed inside the walls, and run above ceilings or in crawl spaces or passage ways/utility chases below the floors.

         6.3   Any required surface mount cable runs will be protected by the Contractor provided Wiremold/Panduit raceway.

         6.4   Wiring runs will not obstruct walkways or service access to mechanical/electrical equipment. All cable shall be self-supported and attached to the structure as required by code.  Cable will follow a common path whenever possible, and will not run closer than 18" from any AC power or signal source.

         6.5   All Category 5e cable runs shall be tested bi-directionally for end-to-end continuity and polarity. Testing must be performed by a recognized manufacturer's unit  (WireScope, Fluke, MicroTest, etc. ), that performs all required certification tests at 350MHz.  Each run tested must meet current EIA/TIA 568B standards.  Hardcopy of each run's test results, along with a disk backup, are required by the District.  Each hardcopy test result must show the run's unique identity number.   Additionally, data runs shall be tested to meet TSB-40A specifications for attenuation and, NEXT, and return loss requirements.  This means that each individual wire run, after termination, will be certified with a category 5e qualified testing device.

All test results are to be documented and turned over to Technology and Information Services.

         6.6   Each cable run will be tagged at both ends with the same assigned numbers or letters.  All jacks, will be labeled with the corresponding connection at the cross-connect field.

         6.7   Materials that may be required by the vendor for horizontal sub-system includes, but is not limited to, the following:

Horizontal Cable (four pair cabling for outlets)

Wall outlets and faceplates at all locations

All cross-connect fields and wiring termination

Wire distribution rings, racks, raceway or troughs

All Fire stops required by code

Labor and material required to restore vendor-damaged surfaces (walls, ceilings and floors).

Additional required materials. Examples: tie wraps, face plates, anchors, support hardware, clamps, labeling equipment, and labels.

         6.8   Vendor functions include the following work items for installation of the horizontal sub-system:

Placing all cabling

Mounting and labeling information outlets

Placing cross-connects

Terminating cables

Cleaning the work area upon completion

Removal of all old replaced cable (related to the project)

7.      Penetrations and Supports

Humboldt County Office of Education requires that all penetrations of firewalls 1-inch or greater must be sleeved with metal conduit.  The conduit must extend a minimum of 18-inches on either side of the fire wall and must be capped with connectors and bushings.  The conduit fill cannot exceed more than 60 per cent of the conduit's capacity.  Any penetrations smaller than 7/8-inch or less does not require metal sleeving, but must be filled with fire-rated sealant.  All conduit, after installation of cable, must also be filled and sealed with fire-rated sealant.  Please note it is the contractor's responsibility to meet all state, local, and federal building code requirements.

As a rule, all wiring closet and floor penetrations/sleeving must be a minimum of 4-inches in diameter.  As stated above, all code requirements relevant to fire rating must be observed by the contractor. 

At no time may cables be supported by any temporary building structure, i.e., conduit, duct work, water pipes, T-bar ceiling tiles and/or support wires.  Again, it is the responsibility of the Contractor to meet all state, local, and federal building codes.  All cable must be supported above the ceiling approximately every (4) to (6) feet.  Usage of metallic D-rings and drive rings are permitted.  All cable ties above the ceiling must be plenum rated.  Non-plenum rated cable ties are permitted within the wiring closets area.  All cables must be neatly bundled and supported in a professional manner. 

Any cable runs in exposed public viewing areas, i.e., classrooms, hallways, etc., must be enclosed in raceway.  All raceway must be secured with the use of anchors/screws.  At no time will the exclusive use of double "sticky" backed tape be permitted.  All raceway caps/splices must be secured.  If nonmetallic raceway is utilized, all splice caps, ceiling caps, etc., must be secured to the raceway.  Use of a silicone based adhesive is permitted.

8.      Documentation

All cable testing documentation will be included as part of the "AS-BUILT" drawings or layouts. These drawings will show all outlet locations, routes taken, and any core-drill/penetrations that were performed.  Outlet locations shown will include their respective unique identity numbers.  As-Built documentation is due within three (3) weeks after any wiring installation is accepted by the County as complete.  FINAL PAYMENT will not be issued until the As-Builts are furnished to the Technology Department and is approved.  Failure to provide this documentation in the time frame stated will be cause for cancellation of the contract.

All documentation will be furnished to the Information Network Services Department.  A copy of the test results and the Contractor must also maintain as-built drawings for a minimum period of one (1) year from the time of acceptance by the County.

All Category 5 voice backbone cables must be tested for continuity.  It is the responsibility of the Contractor to assure the County that all pairs are functioning and are positioned correctly on both ends of the voice backbone punch-down fields.  The County will be responsible for cross-connect from the voice backbone punch-down fields to the voice Category 5e enhanced punch down fields.

9.         Fiber Optic Cabling

District specifications require a minimum of six (6) fiber strands, multi mode, 62.5/125um between each main building wiring closet (MDF) and its respective (IDF) wiring closets, unless otherwise noted.  All cable must be plenum rated and run within plenum rated inner-duct.  All ends will be terminated on ST Style connectors.  All terminated connectors will be mounted inside fiber optic enclosures.  Enclosures will be rack mounted when utilizing floor mounted data racks, and wall mounted when utilizing wall mounted data racks.  All fiber strands will be tested bidirectionally at both 850nm and 1300nm wavelengths utilizing an OTDR.

10.     Warranty

         The contractor shall warrant all labor and material supplied for a period of one year from the date of final testing and acceptance.

11.   Data Jack Examples:

                                          

     RJ11/RJ45            RJ11/DUAL RJ45           DUAL RJ45         DUAL RJ11/DUAL RJ45    QUAD RJ45

LOW VOLTAGE WIRING PRACTICES

NEW STRUCTURES

1.      All low-voltage wiring shall be run in cable trays or raceways in all ceiling, mechanical and/or concealed spaces.

2.      Wherever possible, control panels for low-voltage systems (fire alarm, intercom, clock, telephone, etc.) shall be situated to allow for common routing of main wiring runs.

3.      Low-voltage wiring runs will be kept separated from high voltage wiring to minimize interference.

4.      Low-voltage wiring, whether in trays or free running, shall run either with structural elements of the building, or at 90^o to structural elements.  Line of sight "spider web" wire runs shall not be allowed.

5.      Low-voltage wiring runs shall be laid out in such a manner as to allow ample service access to other mechanical or electrical equipment that is in the same space.

6.      In suspended ceiling systems, access to equipment above the ceiling shall not be blocked by an accumulation of wires, cables, optical fiber cables and raceways that prevents removal of access panels, including suspended ceiling panels.  Wiring shall be suspended according to State and Federal codes.

7.      Each wire run shall be clearly identified and labeled.  Wire runs shall be identified at all junction and pull boxes and within 10 feet of any access point in ceilings, voids or plenums.  Wires shall be identified within 10 feet of through wall fittings, conduits or nipples.  As-built drawings and O & M manuals will list wiring runs keyed to the field identification.

8.      Remove all old replaced wire.  (related to the project)

EXISTING STRUCTURES

1.      As much as possible, low-voltage wiring installed in existing structures as a retrofit shall conform to the same requirements described for new structures.

2.      In most cases trays or raceways will not be available so it is important that good workmanship practices be followed:

         a.      It is the responsibility of the Contractor to become aware of the presence of asbestos in the particular project facility.  The County will provide site surveys for each facility at each site and at no time is the Contractor to disturb asbestos material.  Any remediation necessary because of Contractor's work shall be charged back to the Contractor.

         b.      Wiring shall run either with or at 90^o to building structural elements.

c.      Wire runs shall be grouped together as much as possible.  Individual runs shall be neatly "branched" off main run looms.

         d.      All wiring shall be supported and protected as required by code from structural members of the building.

         e.      Mechanical, plumbing, or other electrical lines, conduit or equipment shall not be used for support of low-voltage wiring.  Low-voltage wiring shall not be draped across this equipment.

         f.       Wire runs shall be kept clear of walkways, access points, and service areas in spaces shared with other equipment.

         g.      Penetrations of existing walls shall be neatly made.  Holes shall be resealed after wires have been run.

         h.      Wire runs penetrating firewalls shall be done according to code with openings resealed so as to maintain the required fire rating.

Workmanship:

1.      Low-voltage wiring should be laid out neatly with straight runs and with sweep 90^o bend radiuses.

2.      Wiring in terminal and junction boxes should be neatly laid out, not just bunched together.  Wires terminating at "punch down blocks" should be brought in neatly.

CATV SYSTEMS SPECIFICATIONS

1.      WORK INCLUDED:

         The system will include, but not be limited to:  incoming service, filters, amplifiers, directional couplers, splitters, room outlets, terminators, fittings, and cable.  It will be designed and capable of delivering a signal of +3 - to - +9 dB at room outlets from a 5 MHz to 1 GHz CATV source.

         Directional couplers and splitters should be accessible for later service or modifications, e.g., room additions, outlets moved, etc.

2.      QUALITY ASSURANCE:

         The completed television distribution system will supply ghost and noise-free signals of adequate signal strength of +3 - to - +9 dB at each outlet in the building.

         The completed system should be in compliance with FCC Specifications 76.605 and 76.609H for maximum allowable signal leakage.

         Information:  The local cable company is required by the FCC to disconnect any source of leakage.  Contact the installation foreman or the leakage compliance inspector from ATT or Suddenlink Cable to check for leakage before final project acceptance.

         Test and log at final inspection to verify that system meets specifications (signal strength, ghost and noise-free signal, and leakage compliance).

         Visual inspection of system should be made before covering.

3.      SPECIFICATIONS:

A.      Amplifiers should be:

                  1.      Broadband, CATV (an amplifier designed to pass the low, mid, high, super, and hyper bands), 120 channel, 75 ohm distribution amplifier.  The amplifier will have a continuously variable adjustable gain of 10 dB and a slope control range of 16 dB at 50-750 MHz, as well as being capable of 2-way RF transmission.

                  2.      Shall meet or exceed Blonder Tongue models BIDA-750-30 with BIDA-RA Return Amplifier option installed.

                  3.      If possible and appropriate, provide an amp with 20% more power than now needed to provide for future expansion needs.

B.     Cable should be:

                  1.      75 ohm coaxial, foil shielded, 60% braid or greater, foam dielectric, RG 6.

                           It should meet or exceed:                 Comm/scope model F660bvp

                                                                                          Comm/scope model F660bvr

                                                                                          Comm/scope model F660bvv

                  2.      The selection of which type of coax cable to use will be determined by local and national electrical codes.

                  3.      Cable should be installed prior to finish cover, and secured in place to prevent movement or abrasion.  A pull line will be included if in conduit.

                  4.      Route outlets through directional couplers (instead of splitters) to home run lines to splitters and head end.

         C.     Fittings should be:

                  1.      75 ohm, solderless type connectors, as necessary to accommodate number of outlets, 50 MHz - 1 GHz operation.

                  2.      Shall meet or exceed LRC models F56 CHI.

         D.     Splitters should be:

                  1.      Splitters will have at least 120 dB RFI shielding.

                  2.      Shall meet or exceed Regal "Gold Label" models GS2DGH, GS3DGH, GS4DGH, and GS8DGV.

         E.     Directional Couplers should be:

                  1.      Couplers with a minimum isolation between output and tap of 20 dB.

                  2.      Shall meet or exceed Regal models RDCT10-6 through 30.

         F.      Room Outlets should be:

                  Antenna outlets, 75 ohm barrel coupler in steel wall plates, with a signal level of +3 - to - 6dB.  Mount flush in wall using a single mud ring and 4 inch square, 2-1/8 inch deep box.

4.      ADDITIONS TO CATV SYSTEMS

         Should meet previously stated new construction specifications, as well as comply with FCC leakage requirements.

5.      SUBMITTALS

         A.      Copies of as-built, product data, installation, and record drawings should be provided to Information and Network Services and on occasion to the Maintenance Department.

         B.     As-built drawings will show directional couplers, splitters, and distribution amplifier placement.

         C.     Copies of both test and log of system and leakage reports will be provided to Maintenance and Information and Network Services.