---
title: Two-Way Takeoff
tags:
  - occupational/takeoff
  - status/draft
  - type/guide
up: "[[takeoff-scripts]]"
aliases:
  - two-way takeoff
---
# Two-Way Takeoff

> [!important]
> Complete [[emergency-systems-research]] before beginning takeoff.

> [!info]
> See [[emergency-communications-systems]] for information
> about Two-Way and AoR communication systems.

> `System` = "FA - Two Way Communication"

## Horizontal

1. * `Area` = Same as Fire Command Room

    `FIRE ALARM & DAS SYSTEMS`/`TWO WAY COMMUNICATION ASSEMBLIES`/`2-WAY COMMUNICATION = 1" CONDUIT ...`

    **Length** = Per drawings if shown,
    otherwise measure from FCR to every elevator lobby.
    For [[pdi-building-types#High Rise|high-rise]] buildings,
    _also_ measure from the FCR to every stairwell.[^1]

    **Count** = Count of elevator lobbies and stairwells if high-rise (match length)

[^1]: See [[ibc_s0403#403.5.3.1 Stairway communication system.|IBC 403.5.3.1]].

## Vertical

1. * `Area` = "Typical - Building All Levels"

    `FIRE ALARM & DAS SYSTEMS`/`TWO WAY COMMUNICATION ASSEMBLIES`/`2-WAY COMMUNICATION = 1" CONDUIT ...`

    * **Length** = 15ft * Count
    * **Count** = match Horizontal

> [!important]
> [[sleeving-takeoff]]

## Firefighter Phone System

> [!important]
> These are ICC definition two-way communication systems,
> redundant with the standard takeoff described above.
> These assemblies can be ignored
> unless given specific direction otherwise.[^2]

[^2]: Confirmed by [[joel-jansen]] 2025-12-08 in reference to [[2100-crystal-drive|2100 Crystal Drive]].

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`COMMUNICATION DEVICES ...`/`...`

* firefighter phone jacks
* fire warden station
* fire phone cabinet
