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Low-voltage and structured cabling

Low-voltage and structured cabling rough-in inspection checklist

Low-voltage and structured cabling rough-in is the last time the work is fully visible. Once the cover inspection passes and the walls, ceilings and slabs close, every defect left behind becomes a demolition bill. This checklist walks the rough-in in the order the work goes in, with the photo each item needs before it gets buried. Work is commonly verified against TIA structured-cabling standards, NEC (NFPA 70). Confirm the edition your authority having jurisdiction has adopted.

The checklist

Every item, and the photo evidence it needs

The photo count on each row is what RTI would require before the item can be submitted. Work the list here and watch the gate hold, or load it into RTI and let it enforce the real thing.

01

Layout and cable

  • Outlet locations checked against the current telecom drawings

    Outlet count and position in each room match the latest issued telecom plan and outlet schedule, with owner-requested adds captured before cover.

    No photo
  • Cable jacket marking matches the approved submittal

    Printed jacket shows the category, the plenum or riser rating the space needs and the manufacturer on the approved submittal, checked on the reels and on pulled runs.

  • Every pulled cable tagged at both ends with its outlet ID

    Temporary tag or marker at the drop and at the telecom room end that matches the outlet number on the drawings, so no run is anonymous once the ceiling closes.

02

Pathways and support

  • J-hooks, conduit and sleeves set at the required spacing

    Support intervals within the spacing the pathway calls for, no cable draped on ceiling wire, grid or piping between hooks.

  • Bend radius maintained at turns and drops

    No kinks or tight sweeps at hooks, sleeve mouths and cabinet entries; radius held to the cable's minimum at every direction change.

  • Bundles dressed and not overfilled in the pathway

    Bundles combed and hung without crushing ties, conduit and sleeve fill left with room to pull, no cinched cinch straps deforming the jacket.

  • Each J-hook or tray support fastened to deck or framing

    Hooks on beam clamps, deck fasteners or their own threaded rod, not clipped to duct hangers, sprinkler pipe or ceiling hanger wire.

03

Separation from EMI sources

  • Separation held from power conduit, motors and lighting ballasts

    Copper cable routed clear of parallel power runs, ballasts and motors by the separation the standard calls for, crossings kept perpendicular.

  • No cabling zip-tied to or hung from electrical conduit

    Low-voltage runs ride their own hooks or tray; none strapped to EMT, conduit straps, electrical boxes or light fixture supports.

04

Firestop at penetrations

  • Rated penetrations firestopped with the listed system

    Every sleeve or core through a rated wall or floor sealed with the listed system for that assembly and fill, no open annular space left behind the cable.

  • Listed firestop system logged for each cable penetration

    Each sealed sleeve or core recorded with its location and the listed system used, so the firestop record matches what went into the wall or floor.

    No photo
05

Release for cover

  • Wall drops coiled in the box with slack for termination

    Each drop left long enough to terminate, coiled inside the box or ring and protected from drywall mud and paint, no cable pushed loose into the cavity.

  • Cable routes above ceilings photographed before the lid closes

    Hook runs, sleeves and tray shown per room or zone with the room number in frame, so the pathway can be found later without opening the ceiling.

  • Area released for cover by the cabling foreman

    Pulls, adds and firestop confirmed complete for the area and the release logged with the super before ceiling and drywall crews close it in.

    No photo

What usually sends this back

The failures are almost always the evidence, not the work

  • Cable bundles laid across ceiling grid wire and pipe instead of on the J-hooks, so the weight and the crushing show up as failed links later.
  • Data cable pulled tight against fluorescent ballasts, motors or conduit carrying power, with the required separation never checked before cover.
  • Sleeves and cored penetrations left unfirestopped because the pull wasn't finished, then buried above the ceiling with the seal never installed.

Common questions

6 answers

What does this low-voltage and structured cabling rough-in checklist cover?
14 items across 5 sections, covering layout and cable, pathways and support, separation from emi sources, firestop at penetrations, and more. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
Who should run this inspection?
The cabling foreman walking their own pathways, or the GC's superintendent at the pre-cover hold point above the ceiling.
When in the schedule should this walk happen?
After conduit, sleeves and J-hooks are set and the horizontal cable is pulled, before ceiling grid, hard lid or drywall closes the runs in.
Why do these items ask for a photo?
11 of the 14 items call for photo evidence, 15 photos in all. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
What most often fails a low-voltage and structured cabling rough-in inspection?
Cable bundles laid across ceiling grid wire and pipe instead of on the J-hooks, so the weight and the crushing show up as failed links later. Data cable pulled tight against fluorescent ballasts, motors or conduit carrying power, with the required separation never checked before cover. Sleeves and cored penetrations left unfirestopped because the pull wasn't finished, then buried above the ceiling with the seal never installed.
Can I use this checklist in RTI?
Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper evident audit trail.

Run it with the Photo Gate

A checklist nobody can submit half-finished

Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 15 required photos exist. Approved walks roll into a branded turnover package with a tamper evident record behind every line.

See all 508 checklists · 6741 items and 5984 photo requirements in total.