Site Survey and Cable Pathway Guide

Why New Construction is Different

New construction offers a unique opportunity: you get to install cabling infrastructure BEFORE walls are closed. This means no fishing cables through finished walls, no drilling through studs you cannot see, and no working in cramped ceiling spaces. But it also means timing is critical—miss your window, and you are back to retrofit installation challenges.

Documents to Review

Before visiting the site, review:

• Architectural Plans: Room layouts, wall types, ceiling heights
• Electrical Plans: Panel locations, power availability, conflicts to avoid
• HVAC Plans: Duct locations, plenum spaces, clearance requirements
• Structural Plans: Load-bearing walls, fire ratings, penetration requirements
• IT Requirements: Number of drops per room, equipment needs, speed requirements
• Building Codes: Local fire code, accessibility requirements, pathway standards

Client Requirements Checklist

• Total number of network drops needed
• Drop locations (desk locations if available)
• Special requirements (PoE devices, high-bandwidth needs)
• Phone system integration requirements
• WiFi access point locations
• Security camera integration
• Audio/video requirements
• Budget and timeline constraints

Walkthrough Process

A systematic walkthrough ensures you capture all critical information:

1. Start at main entrance/demarc location
2. Identify equipment room location
3. Walk each floor/area systematically
4. Mark drop locations on plans
5. Photograph key areas and challenges
6. Measure cable runs (approximate)
7. Note coordination needs with other trades
8. Identify pathway obstacles and solutions

Equipment Room Planning

The equipment room (MDA - Main Distribution Area) is the heart of your infrastructure. Requirements:

• Location: Centrally located to minimize cable runs
• Size: Minimum 10x10 feet, larger for bigger installations
• Power: Dedicated 20A circuits, UPS capability
• Cooling: HVAC or ventilation to prevent overheating
• Access: 36" clear access in front of equipment
• Security: Lockable door, limited access
• Lighting: Adequate illumination for troubleshooting
• Plywood backing: 3/4" on walls for equipment mounting

For multi-floor buildings, you may need IDAs (Intermediate Distribution Areas) on each floor to keep horizontal cable runs within the 295-foot maximum.

Horizontal Pathway Planning

Horizontal pathways carry cables from equipment rooms to work areas:

• Star topology: Every drop home-runs to equipment room or IDA
• No daisy-chaining: Each drop is independent
• 295-foot maximum: Total horizontal distance (including patch cords)
• Cable trays: Preferred for large bundles
• J-hooks: Good for smaller installations
• Separation: Minimum 12" from AC power lines
• Support spacing: Maximum 4-5 feet

Vertical Pathway Planning

Vertical pathways (riser shafts) connect floors:

• Dedicated shafts: Preferred for large installations
• Sleeves through floors: Alternative for smaller buildings
• Fire stopping: Required at every floor penetration
• Cable capacity: Size for current needs plus 25% growth
• Accessibility: Must be accessible for future adds
• Separation: Keep low-voltage separate from power risers

Cable Quantity Calculations

Accurate cable quantity calculations prevent shortages and excess waste:

For bulk cable ordering:

• Calculate per-drop average length
• Multiply by total number of drops
• Add 10-15% for spare capacity
• Round up to next 1000-foot box quantity

Pathway Infrastructure

Select appropriate pathway types:

Support Spacing Requirements

• Horizontal runs: Support every 4-5 feet maximum
• Vertical runs: Support every 4-5 feet
• At turns: Support within 12 inches of bend
• At penetrations: Support within 12 inches
• Bundle management: Use velcro straps, never zip ties on data cables

Working with General Contractor

The GC coordinates all trades. Your job is to make their job easier:

• Provide detailed materials list for procurement
• Submit installation schedule aligned with project timeline
• Communicate changes immediately
• Complete work on schedule to avoid delaying other trades
• Clean up work areas daily
• Attend job meetings and provide status updates

Electrical Contractor

Key coordination points:

• Power for equipment room: Dedicated circuits, locations
• Pathway separation: Maintain 12" from power lines
• Conduit sharing: Never share conduit with power
• Panel clearances: Avoid blocking access to electrical panels
• Ceiling space: Coordinate pathways to avoid conflicts

HVAC Contractor

• Identify duct locations before running cable
• Coordinate clearances around HVAC equipment
• Verify which ceiling spaces are plenum (require plenum cable)
• Plan pathways to avoid blocking duct access
• Equipment room cooling requirements

Fire Protection

• Sprinkler head clearances (18" minimum)
• Fire stop requirements at all penetrations
• Smoke detector locations (coordinate WiFi AP placement)
• Fire-rated wall penetrations (must maintain rating)

Drywall Contractor

• Install all pathway infrastructure BEFORE drywall
• Install outlet boxes flush with framing (not proud of studs)
• Mark outlet locations clearly for drywall cutouts
• Coordinate fire stopping at penetrations
• Protect cables from drywall screws with nail plates

Installation Sequence

1. Equipment room prep: Install plywood, cable trough, power
2. Pathway installation: Cable trays, J-hooks, supports
3. Outlet box installation: Position and secure boxes
4. Cable pulling: Run cables per plan, maintain organization
5. Cable dressing: Organize, support, label cables
6. Trim-out: Terminate outlets and patch panel
7. Testing: Test every cable, document results
8. Final documentation: As-builts, test reports, closeout

Fire Stopping Requirements

Documentation Requirements

Professional installations require thorough documentation:

• Daily logs: Work performed, materials used, issues encountered
• As-built drawings: Actual cable routes and drop locations
• Test results: Every cable tested and documented
• Photos: Pathways, equipment room, before/after conditions
• Change orders: Any deviations from original scope
• Materials list: Quantities used, remaining materials
• Warranty info: Cable specifications, manufacturer data

Final Closeout Package

Deliver to client:

• As-built drawings (CAD or marked-up plans)
• Complete test results for all cables
• Equipment room layout diagram
• Patch panel port directory
• Cable labels and numbering scheme
• Warranty documentation
• Manufacturer cable specifications
• Maintenance recommendations

Congratulations on completing all training modules! Now it's time to demonstrate your knowledge with a final assessment.