# Detail or Installation Mismatch in Division 27 Communications submittals

> Source: https://deviationcheck.com/divisions/27-communications/detail-installation-mismatch/

The submitted detail, dimension, anchorage, or installation method differs from what the spec or drawings require.

## What to look for in Division 27 Communications

- **Cable pathway type** mismatch (conduit vs cable tray vs J-hook vs innerduct) - spec may require specific types in specific locations
- **Conduit size** undersized for cable count at 40% fill per TIA-569
- **Cable bend radius** - submitted cable specs must support the minimum bend radius for the installation method
- **Firestop method** at penetrations differs from spec or UL-listed assembly
- **Outlet height** for work area outlets differs from spec or ADA requirements
- **Rack grounding method** (TGB, TMGB) differs from TIA-607 or spec
- **Cable support spacing** (J-hook, cable tray support) does not meet TIA-569 or spec
- **Patch cord length** or type at work area outlets differs from spec
- **AP mounting method** (ceiling tile, hard-lid, wall) differs from design
- **DAS antenna type or placement** differs from RF design coverage model
- **AV signal routing** (HDMI, HDBaseT, AVoIP, fiber) differs from spec

## Severity

Default grade: Fix and Resubmit. Escalates to Blocker when the difference affects a fire-rated, seismic, or structural assembly.