---
id:
aliases: []
tags:
  - occupational
  - occupational/systems/telecom
---
# Telecom

## Info

* Telephone
* Data
* Cable TV

Not to be confused with [[low-voltage]].

## Sequence

### 1. Estimate preparation

#### Riser

1. Locate MDF and IDF Rooms
2. Service entrance conduit "Site Low Voltage Ductbank (SLVDB)"
3. Riser throughout building
4. Sleeving for riser

#### Devices

1. Locate Proposal/Scope of Work. Determine ownership and takeoff responsibility:
    * Cabling
    * Conduit & Pathways
    * Sleeving
2. Locate which plans the LV is taken off on
3. Locate LV Details
4. Read about the project specifications and construction type
5. Fill out OneNote

### 2. Takeoff

1. Takeoff devices as shown throughout the building
2. Takeoff Conduit Riser as needed

#### "Site Low Voltage Duct Bank"

* Conduit from outside of building to MDF

|          |                                 |
| -------- | ------------------------------- |
| Area     | 2 - Site                        |
| Phase    | Site                            |
| System   | LVD - Site Low Voltage Ductbank |
| Bid Item | 1 - Site                        |

`COMMON ASSEMBLIES`/`PDI EMPTY CONDUIT`

* Size and quantity per proposal > drawings > assume (4) 4"C
* Stubbed 5' outside of building footprint
* Garden Style - Outside of every building

#### Telecom Vaults

* Temp. Item
* $1000, 12 Hours, Sort Code 200

#### Backbone Riser

|        |                       |
| ------ | --------------------- |
| Area   | Lvl                   |
| Phase  | BOH                   |
| System | TC - Telecom Backbone |

Typically (2-4) 4" conduit ran from building entrance to Main Telecom Room.

Then from MTR/MDF/MPOE, typically (2-4) 4" to Telecom Riser (sometimes in electrical room), Add for vertical

> Going forward for the riser backbone. It's better to utilize a Typical and put 15' of the conduit riser on each floor bc currently it has the entire riser on the mezzanine level. So when Ops goes to release the conduit from the CBOM they are going to have it all on the mezzanine level and not on every level where it's needed

Add sleeves
* (2) 4" EZ Path - ID.HILTI

#### Telecom Backboard

A-Bid: Telecom Backbone

`COMMON ASSEMBLIES`/`MISC ASSEMBLIES`/`... PLYWOOD BACKBOARD`

#### Corridor Conduit

* EMPTY CONDUIT : MSDE TO IDF

* "Average of subfeeds"
* Add Conduit to Riser

* Choose Material

* Choose size
* Strut mount

#### Inner Duct

USE GP (CA.27.10.11-14)

For Future use (ex// Fiber)

* "Average of subfeeds"
* Run in Corridors
* One Line Item per Area per level

> * Level 2 Area A has 20 Units
> * Subfeed Average is 100'
> * Level 2 Area A Micro Duct = 2000' Length and 20 Count

#### Devices

CA. Telecom. 8. 6 or 7

Take off by counts on Drawings

3/4" or 1" EMT Stub Up (Use 1" if not specified)
* Unless plans state conduit home runs
* Already at 10'
* Use 9 and 10 if over 10'

Count all telecom located in a wall
* Don't need for floorboxes
* Don't need to link
* Doesn't matter what wall type

If more than 3 wires use 1" conduit

##### Rough-In Only

Run when Free Air is Qualified on Proposal

CA.27.8.6/7
* Parts: 1 Box, EMT Stubby, 2 J-Hooks

CA.22.7
* Parts: 2 Boxes, EMT Stub, 1 J-hook/per 6'

### 3. Extension (Review and Checking)

1. Sleeving
