---
tags:
  - occupational/takeoff
  - status/draft
  - type/guide
title: Telecom
---
# Telecom

> [!info] Scope
> * Telephone
> * Data
> * Cable TV

> [!important]
> Not to be confused with [[low-voltage-takeoff]].

## Note: Empty Conduit

Where `COMMON ASSEMBLIES`/`PDI EMPTY & DUCTBANK CONDUIT`/...
is specified, `FEEDER CONDUIT AND WIRE`/...
is also acceptable.

## "Site Low Voltage Duct Bank"

1. * `Area` = "2 - Site"
    * `Phase` = "Site"
    * `System` = "LVD - Site Low Voltage Ductbank"
    * `Bid Item` = "1 - Site"

    `COMMON ASSEMBLIES`/`PDI EMPTY & DUCTBANK CONDUIT`/...
    * Size and quantity per proposal > drawings > assume (4) 4"C
    * **Length** = Length measured from MDF to 5ft beyond building footprint

_Garden Style:_ Outside of every building

> [!important] Long-Radius Elbows
> Note requirements for long-radius elbows,
> substitute items as necessary.

### Telecom Vaults

"Quazite Box"
polymer concrete enclosure

1. `TEMPORARY ITEMS`/`Quazite Box ...`
    * **Material Price** = 1000.00
    * **Labor Hours** = 12.00
    * **Sort Code ?** = 200

Alternative

1. `COMMON ASSEMBLIES`/`POLES / EXCAVATION / CORING / UG PULL BX`/`MANHOLES / PULL BOXES / EXCAVATION / CONCRETE`/`QUAZITE UG PULL BOXES`/...

## Backbone Riser

* `Phase` = "Building - BOH ..."
* `System` = "TC - Telecom Backbone"

(2) 4"C or (4) 4"C if not shown

### Horizontal Backbone

1. * `Drawing` = Telecom riser diagram
    * `Area` = Area of riser room

    `COMMON ASSEMBLIES`/`PDI EMPTY & DUCTBANK CONDUIT`/...
    * **Length** = Length measured from MDF to IDF
        * Input adder length to reach the level of the IDF (Minimum 15ft).

### Vertical Backbone

1. * `Drawing` = Telecom riser diagram
    * `Area` = "Typical - Building All Levels"

    `COMMON ASSEMBLIES`/`PDI EMPTY & DUCTBANK CONDUIT`/...
    * Delete elbows if unnecessary.
    * **Length** = Height between floors (Minimum 15ft)

## Telecom Backboard

As shown on plans,
only if not excluded in proposal.

1. * `Phase` = "Building - BOH ..."
    * `System` = "TC - Telecom Backbone"

    `COMMON ASSEMBLIES`/`MISC ASSEMBLIES`/`... PLYWOOD BACKBOARD`
    * **Count** = As shown

## Corridor Conduit (Unit MSDE to IDF)

One Takeoff per Area per level

1. `COMMON ASSEMBLIES`/`PDI EMPTY & DUCTBANK CONDUIT`/...
    * **Length** = Average of subfeed lengths * # of Units
    * **Count** = # of Units

## Inner Duct

For future use (e.g. fiber)

1. `TEMPORARY ITEMS`/`MaxCell 3" 3 Cell`
    * **Material Price** = 450.00/C
    * **Labor Hours** = 12.00/C

_Alternative:_

1. `COMMON ASSEMBLIES`/`TELECOM SYSTEMS`/`INNERDUCT`/`... (GP)`

## Devices

As shown on plans.
Ignore scope shared with [[electrical-takeoff|electrical]].
(e.g. floor boxes)

1. `COMMON ASSEMBLIES`/`TELECOM SYSTEMS`/...
    * .../`BOH / AMENITY ASSEMBLIES`
    * .../`SCREWLESS DECORA COVERS UNITS / BOH`
    * .../`ROUGH IN ASSY`

If _system_ is included,
take off _both_ rough-in and device assemblies
in amenity areas.

If rough-in is included,
always provide backboxes and conduit stub-ups for outlets in other than units,
even if qualified as "free-air per code" or similar.[^1]

[^1]: [[2026-03-25_08-14-59#"Free-Air Per Code"]]