Addendum 1 - RFB-UC26-146C WAWARSING PUBLIC SAFETY RADIO TOWER SITE PROJECT.pdf

Ulster County Public Radio System

Wawarsing Tower Site Project CABLE TRAY / LADDER RACK SYSTEMS

Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C. 275036 - 1

BID NO: RFB-UC26-146C July 15, 2026

SECTION 270536

CABLE TRAY / LADDER RACK SYSTEMS (INTERIOR – TELECOM SHELTER)

PART 1 – GENERAL

1.01 SUMMARY

A. This section includes requirements for the interior overhead cable ladder rack / cable tray system within the prefabricated telecommunications equipment shelter.

B. Work includes:

• Furnishing and installation of complete cable rack system

• Coordination with shelter design and equipment layout

• Grounding and bonding of ladder rack system

• Cable management accessories and fittings

C. System shall support routing of:

• RF feeders

• Hybrid/power cabling

• Fiber optic cabling

1.02 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions, apply to this section.

B. Coordinate with:

• C-3 Compound Plan (equipment layout and shelter configuration)

• C-7 Antenna and cable entry details

• G-2 Interior Grounding Plan

• Any other applicable design specifications

1.03 REFERENCES

Comply with latest editions of:

• ANSI/TIA-569 – Telecommunications Pathways and Spaces

• NFPA 70 (NEC), Article 392 – Cable Trays

• NEMA VE-1 – Metal Cable Tray Systems

• NEMA VE-2 – Installation Guidelines

1.04 SYSTEM DESCRIPTION

A. Provide a complete integrated overhead cable rack system within the shelter.

B. The system shown on the drawings is schematic; provide a complete system meeting performance requirements herein.

C. System shall extend from the cable entry port to all equipment cabinets including any future expansion.

Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C. 275036 - 2

1.05 RESPONSIBILITIES

A. Shelter Manufacturer shall:

• Furnish and install the complete cable rack system as part of the prefabricated shelter

B. Contractor shall:

• Coordinate with shelter manufacturer

• Verify compliance with this specification

• Connect system to site grounding network

1.06 SUBMITTALS

A. Product Data:

• Manufacturer specifications for ladder rack system

• Load ratings and material data

B. Shop Drawings:

• Cable rack layout within shelter

• Elevations and support details

• Alignment with entry ports and equipment

• Grounding/bonding provisions

C. Submit prior to shelter fabrication for approval.

1.07 QUALITY ASSURANCE

A. Installer shall have experience with telecommunications infrastructure installations.

B. All components shall be listed/labeled where applicable.

PART 2 – PRODUCTS

2.01 ACCEPTABLE MANUFACTURERS

A. Cable rack system shall be provided by the selected shelter manufacturer.

B. System components shall be standard, commercially available products designed for telecom applications.

2.02 MATERIALS

A. Ladder Rack System:

• Type: Ladder rack or integrated cable tray

• Material: Aluminum (preferred) or corrosion-resistant equivalent

• Finish: standard mill finish or equivalent

B. Dimensions:

• Width: 12 inches minimum

C. Structural Capacity:

• Minimum: 50 lb/ft distributed load

Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C. 275036 - 3

2.03 COMPONENTS

Provide complete system including:

• Straight ladder sections

• Tees and intersections

• Splice hardware

• Trapeze supports or integrated support system

• Radius drop-out (waterfall) fittings

• End caps

• Bonding jumpers

2.04 CABLE MANAGEMENT ACCESSORIES

A. Provide:

• Radius drop-out fittings at all cable transitions

• Smooth edges and protective surfaces

B. Maintain bending radius requirements for fiber and hybrid cables.

2.05 GROUNDING MATERIALS

A. Bonding conductors:

• Minimum #6 AWG copper

B. Grounding hardware:

• Listed lugs and connectors compatible with ladder system

PART 3 – EXECUTION

3.01 INSTALLATION – GENERAL

A. Install cable rack system as part of prefabricated shelter assembly.

B. System shall be level, secure, and aligned with equipment layout.

C. Support spacing:

• Maximum 5 feet or per manufacturer requirements (whichever is more stringent)

3.02 PROJECT-SPECIFIC LAYOUT

A. Shelter Size: As defined in the Project Drawings

B. Equipment Configuration:

• Four (4) equipment cabinets minimum (to be confirmed with the Owner)

C. Provide:

1. Longitudinal and Transverse cable rack runs:

o Length: as needed to cover cabinet configurations and future expansion

2. Cable routing:

o Continuous path from cable entry port to ladder rack system o No sharp bends at entry

3. Cabinet access:

Tectonic Engineering Consultants, Geologists & Land Surveyors, D.P.C. 275036 - 4 o Four (4) cable drop locations aligned with cabinet centers

3.03 COORDINATION

A. Coordinate installation with:

• Cable entry ports

• Equipment cabinet layout

• HVAC equipment

• Lighting fixtures

• Fire suppression systems

B. Do not obstruct:

• Airflow

• Access aisles

• Equipment maintenance zones

3.04 ELEVATION AND CLEARANCES

A. Install at elevation coordinated with shelter design, typically:

• 8′-0″ to 8′-6″ AFF

B. Maintain:

• Minimum 12 inches above cabinet tops

• Clearance from HVAC and ceiling systems

3.05 CABLE MANAGEMENT INSTALLATION

A. Install radius drop-out fittings at:

• Each cabinet drop

• All directional transitions

B. Ensure:

• No exposed sharp edges

• Compliance with cable bend radius requirements

3.06 GROUNDING AND BONDING

A. Bond all ladder rack sections to maintain electrical continuity.

B. Provide bonding across all joints.

C. Connect cable rack system to the Interior Master Ground Bar (MGB) as shown on grounding plans.

D. Verify grounding continuity after installation.