Project estimator
Airport, hospital or campus: what the job needs
Very large jobs. We give a ballpark range so you can budget packs and lead times; our project desk then works from your drawings and phases.
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How this estimate works
Each quantity comes from a stated rule of thumb applied to your answers. For a typical airport, hospital or campus (500,000 sq ft airport or transit terminal), these are the rules and the items they point to:
- NR-4x200 Harness tie, 40 lb, 7.9 in, 3.5 mm wide
- Panel dressing: 3 small ties per circuit × 3,360 circuits (80 panels of 42, about 1 per 6,250 sq ft)
- NR-8x370 Heavy-duty nylon tie, 120 lb, 14.6 in (370 mm)
- Power cable in tray: 2 bundles tied every 6 ft over about 18,000 ft of tray (3 ft per 100 sq ft)
- NR-9x600 Heavy-duty nylon tie, 175 lb, 23.6 in (600 mm)
- Vertical risers: 2 bundles tied every 18 in over 182 ft (7 risers, 13 ft per floor)
- NR-HL12x200 Hook-and-loop strap, 12 mm wide, 7.9 in
- Cable path: a hook-and-loop strap at each J-hook every 5 ft over about 44,000 ft, 1.5 bundles per hook
- Rack and patch-panel dressing: 3 straps per drop × 9,167 drops (2 per workstation, 1 workstation per 125 sq ft, plus wireless and cameras)
- NR-SLT-400 Stainless steel tie, 180 lb, 15.7 in (400 mm)
- Rooftop runs: 20 stainless ties per unit
- NR-SST-300 Stainless steel tie, 135 lb, 11.8 in (300 mm)
- Outdoor runs (aprons, canopies, parking, site lighting): about 1 stainless tie per 500 sq ft
- NR-DRS-25 Heat shrink tubing 2:1, 25 mm (1 in), 50 m roll
- Heat shrink over large lug barrels: 3 in per lug
- NR-DRS-6 Heat shrink tubing 2:1, 6 mm (1/4 in), 100 m roll
- Phase marking and repairs: 3 in of 1/4 in heat shrink per circuit
- NR-FDD2-250 Quick disconnect, female, 16 to 14 AWG, .250 in tab
- HVAC equipment connections: 6 quick disconnects per unit
- NR-SVS1.25-4 Fork terminal, 22 to 16 AWG, #8 stud, red
- Fire alarm, access control and camera devices: 1 per 400 sq ft × 2 terminals (1,250 devices)
- NR-E1008 Insulated ferrule, 18 AWG (1.0 mm²), 8 mm pin
- HVAC control wiring: 24 ferrules per rooftop unit × 125 units (1 per 4,000 sq ft)
- NR-SC16-6 Copper tube lug, 16 mm², 1/4 in stud
- Equipment grounding (2 per panel) and telecom bonding (3 per floor)
- NR-SC70-10 Copper tube lug, 70 mm², 3/8 in stud
- Feeders at panels and transformers: 4 large lugs per panel
- Service entrance grounding and bonding: 12 large lugs per building × 1
We add 10% for waste and offcuts, round up to whole packs of 100 and whole rolls, and show a low to high range because real jobs vary with routing, spacing and spec. Your drawings and spec sections beat any rule of thumb: send them with your quote request and we'll price from them.