Attch_1_NECC_HQ_Ant__Mod-Cabling_specsRevA.doc

WMNF HQ Antenna Modification/Radio Frequency Cabling and Tower Building Communication/Power Conduit Installation, NECC Phase II Specifications 01- Electrical

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Building wires and cables rated 600 V and less.

2. Connectors, splices, and terminations rated 600 V and less.

3. Sleeves and sleeve seals for cables.

1.3 SUBMITTALS

A. Product Data: For each type of product indicated.

B. Field quality-control test reports.

1.4 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.

B. Comply with NFPA 70.

1.5 COORDINATION

A. Set sleeves in cast-in-place concrete, masonry walls, and other structural components as they are constructed.

PART 2 - PRODUCTS

2.1 CONDUCTORS AND CABLES

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Alcan Products Corporation; Alcan Cable Division.

2. American Insulated Wire Corp.; a Leviton Company.

3. General Cable Corporation.

4. Senator Wire & Cable Company.

5. Southwire Company.

B. Copper Conductors: Comply with NEMA WC 70.

C. Conductor Insulation: Comply with NEMA WC 70 for Types THHN-THWN and XHHW.

2.2 CONNECTORS AND SPLICES

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. AFC Cable Systems, Inc.

2. Hubbell Power Systems, Inc.

3. O-Z/Gedney; EGS Electrical Group LLC.

4. 3M; Electrical Products Division.

5. Tyco Electronics Corp.

B. Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type, and class for application and service indicated.

2.3 SLEEVES FOR CABLES

A. Steel Pipe Sleeves: ASTM A 53/A 53M, Type E, Grade B, Schedule 40, galvanized steel, plain ends.

B. Cast-Iron Pipe Sleeves: Cast or fabricated "wall pipe," equivalent to ductile-iron pressure pipe, with plain ends and integral waterstop, unless otherwise indicated.

C. Sleeves for Rectangular Openings: Galvanized sheet steel with minimum 0.052- or 0.138-inch (1.3- or 3.5-mm) thickness as indicated and of length to suit application.

D. Coordinate sleeve selection and application with selection and application of firestopping specified in Division 7 Section "Through-Penetration Firestop Systems."

2.4 SLEEVE SEALS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Advance Products & Systems, Inc.

2. Calpico, Inc.

3. Metraflex Co.

4. Pipeline Seal and Insulator, Inc.

PART 3 - EXECUTION

3.1 CONDUCTOR MATERIAL APPLICATIONS

A. Feeders: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger.

B. Branch Circuits: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger.

3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND WIRING METHODS

A. Service Entrance: Type XHHW, single conductors in raceway.

B. Exposed Feeders: Type THHN-THWN, single conductors in raceway.

C. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces:

Type THHN-THWN, single conductors in raceway.

D. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground:

Type THHN- THWN, single conductors in raceway.

E. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN-THWN, single conductors in raceway.

F. Class 1 and 2 Control Circuits: Type THHN-THWN, in raceway.

3.3 INSTALLATION OF CONDUCTORS AND CABLES

A. Conceal cables in finished walls, ceilings, and floors, unless otherwise indicated.

B. Use manufacturer-approved pulling compound or lubricant where necessary; compound used must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended maximum pulling tensions and sidewall pressure values.

C. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will not damage cables or raceway.

D. Install exposed cables parallel and perpendicular to surfaces of exposed structural members, and follow surface contours where possible.

E. Support cables according to Division 16 Section "Basic Electrical Construction Methods and Materials."

F. Identify and color-code conductors and cables according to Division 16 Section "Electrical Identification."

3.4 CONNECTIONS

A. Tighten electrical connectors and terminals according to manufacturer's published torque- tightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A and UL 486B.

B. Make splices and taps that are compatible with conductor material and that possess equivalent or better mechanical strength and insulation ratings than unspliced conductors.

C. Interior Penetrations of Non-Fire-Rated Walls and Floors: Seal annular space between sleeve and cable, using joint sealant appropriate for size, depth, and location of joint according to Division 7 Section "Joint Sealants."

D. Aboveground Exterior-Wall Penetrations: Seal penetrations using sleeves and mechanical sleeve seals. Size sleeves to allow for 1-inch (25-mm) annular clear space between pipe and sleeve for installing mechanical sleeve seals.

E. Underground Exterior-Wall Penetrations: Install cast-iron "wall pipes" for sleeves. Size sleeves to allow for 1-inch (25-mm) annular clear space between cable and sleeve for installing mechanical sleeve seals.

3.5 SLEEVE-SEAL INSTALLATION

A. Install to seal underground exterior-wall penetrations.

B. Use type and number of sealing elements recommended by manufacturer for cable material and size. Position cable in center of sleeve. Assemble mechanical sleeve seals and install in annular space between cable and sleeve. Tighten bolts against pressure plates that cause sealing elements to expand and make watertight seal.

All wiring shall be enclosed in metal conduit and meet NEC (National Electric Code), latest edition, and any other state, or local codes.

02 – Antenna

02.1 - Summary of Work

Work will include:

Remove existing antenna to facilitate construction of top section. The feedline may remain if it is deemed servicable and will not impede contruction. Once constuction is complete, antenna will be remounted on a sidearm mount at the 80’ level on the same leg from which it was removed. Existing feedline may be reused if servicable.

Install six antennas and associated coaxial cables. Two (2) UHF Yagi antennas will be mounted on the northernmost leg, pointed at nine (9) degrees to Loon Mountain; two (2) UHF Yagi antennas will be mounted on the easternmost leg, pointed at thirty (30) degrees to Mount Tecumseh; and two (2) VHF omnidirectional antennas on the east facing leg. Where multiple antennas are mounted to a given tower leg, there will be a minimum vertical separation of five (5) feet for UHF and ten (10) feet for VHF.

Feedlines to each antenna will be grounded per R56 Site Installation Standards and secured to the tower with appropriate hangar devices. Each cable will be terminated with N-type female connectors on both ends. Connections to each antenna will be completed using coaxial cable jumpers.

02.2 - Performance All work will be performed to trade standards and in compliance with manufacturer’s and FCC recommendations and regulations.

The installer shall be fully trained, licensed and insured for installing radio towers with greater than 8 years current experience in design and construction of towers. The Contractor shall provide the CO an installers resume and past performance statement of previous projects in New Hampshire and the New England states. The installer and fabricator shall verify the structural and signal loading requirements as expressed in this Forest Service specification, and give written assurance that these conditions meet the State and local requirements.

02.3 - Crane Access Tower base is approximately six feet from the pavement edge and are no overhead obstructions.

02.4 Existing Tower

The tower is a NUDD 120’ self supporting tower model 120’ S9BPA serial #108-113012 that presently stands at 100.’

Tower shall be equipped with a top support bracket at 120’ and a D1330 6’ side arm assembly with all necessary materials at 80’.

Tower shall have a hot dipped galvanized finish applied after fabrication.

Damaged areas not requiring replacement shall be re-galvanized using a cold process application.

Tower fasteners, connectors, bracing and other materials shall be galvanized and/or rust proof.

The tower shall be designed for 90 mile per hour wind load with ½” ice.

A cable safety restraint system and climbing pegs to 120’ shall be integral with the tower.

Cable clamps and restrainers shall be installed by the contractor as necessary to adequately secure all feed line cables.

Contractor will supply ice bridge and associated mounting hardware and support pipes.

Contractor will supply any materials required to complete grounding and bonding requirements.

02.5 – New Tower Section The Forest Service shall provide the 20’ tower section and bracing without attaching hardware.

Contractor will supply necessary hardware meeting A325T DELTA ½” NC Galvanized for installation of the FS supplied top tower section and bracing.

Contractor will relocate and reinstall existing antenna and reworking associated cable connections.

Contractor will supply climbing pegs and fall arrest cable to the 120’ height

02.6 - Antenna

The Forest Service will provide all antennas required for installation.

Contractor will furnish all necessary hardware to ensure that antennas are securely mounted to the tower.

02.7 – Cable

Contractor will furnish all necessary RF cable, connectors, and hanging hardware.

All cable shall have a nominal impedance of 50 ohms.

Feedline shall be 7/8” foam corrugated coax (Commscope AVA5 or equivalent)

RF jumpers will be no smaller than (industry size) 3/8”, may be braided or corrugated cable, and must have 100% shield (foil and braid, if braided cable). RG-8/U will not be used.

02.8 – Project Clean Up

Contractor shall be responsible for all debris cleanup in the project area.

Schedules Contractor shall provide a construction schedule in an acceptable format displaying work items, periods of work, and expected completion dates. Schedule shall be submitted to the COR for review and approval once the contractor receives the contract Notice To Proceed and prior to the start of any work on the project.

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