---
id:
aliases: []
tags:
  - authorship/original
  - destiny/permanent
  - occupational/takeoff/fire-alarm
  - status/draft
  - type/guide
title: Fire Alarm Takeoff
---
# Fire Alarm Takeoff

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

> [!info]
> See [[fire-alarm]] for information about fire alarm systems.

## Assembly Selection

Free Air < PVC in Slab < EMT

_High Rise (Steel & slab):_ Free air in Units, use conduit elsewhere.
_Mid Rise, High Density (Wood frame):_ Free air, conduit only where required.

## Backbone

Put all backbone takeoff in the `Area` of the Fire Command Center.
Include [[sleeving-takeoff]] as necessary.

### Fire Command Center

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`HEAD END EQUIP`/`... HEAD END`

### Generator Room

`Area` = Same as FACR

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`GENERATOR ROOM ...`

### Fire Pump Room

`Area` = Same as FACR

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`FIRE PUMP ROOM ...`

### Elevator Control Rooms

> Also "Elevator Machine Room"

For each Elevator Control Room (ECR):

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`ELEV CONTROL ROOM ...`

* **Count** = 1

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`FACR TO ELEV CONTROL RM ...`

* **Length** = Length measured from the most distant points of the FACR and ECR.
    *  Input adder length to reach the level of the ECR (Minimum 15ft).

### Elevator Shafts

`Area` = Same as FACR

For each elevator shaft:

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`ELEV SHAFT ...`

* **Count** = 1

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`FACR TO ELEV SHAFT ...`

* **Length** = Length measured from the most distant points of the FACR and elevator shaft.
* Input adder length to reach the level of the shaft (Minimum 15ft).

> [!important] Counting Elevator Shafts
> Adjacent elevators may be in the same or parallel shafts.
> Count the shafts accordingly:
>
> ```
> |                             |                                |
> | || +--------+ +--------+ || | || +--------+ || +--------+ || |
> | || | Elev 1 | | Elev 2 | || | || | Elev 1 | || | Elev 2 | || |
> | || +--------+ +--------+ || | || +--------+ || +--------+ || |
> | ||=======================|| | ||============||============|| |
> |           1 shaft           |            2 shafts            |
> ```

### FACR to Stairwells

> [!info]
> This is for the Flow/Tamper modules in the stairwells

For each stairwell:

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`GEN, ELEV, FIRE PUMP & FA ROOM ASSEMBLIES`/`FACR TO STAIRWELLS 1" CONDUIT ...`

* **Length** = Length measured from the most distant points of the FACR and stairwell.
* Input adder length to reach the level of the stairwell (Minimum 15ft).

## Terminal Cabinets

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`TERMINAL CABINET`/`ACE D ACCESSORY CABINET ENCLOSURE ...`

* _Garden Style, High Density:_ (2) 1"C
* _High Rise:_ (2) 2"C

Horizontal:

> * `Area` = Same as FACR
> * **Length** = Length measured from FACR to all electrical rooms

Vertical:

> * `Area` = "Typical - Building All Levels"
> * **Length** = 10ft

## Annunciator Panels

> [!info] Also Known As
> * Fire Alarm Annunciator (FAA)
> * Fire Alarm Annunciator Panel (FAAP)

> `COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`ANNUNCIATORS`/`REMOTE SERIAL ANNUNCIATOR ...`
> * **Length** = Length measured from the FACR to FAA or Lobby

## Central Monitoring Loop

> [!important]
> Garden Style only.

> Fire Alarm Control Panels from each building will send a signal to a central location.
> 
> In case of an emergency,
> the fire department will go to the central fire alarm station
> and find out what the issue is.

## Devices

### Smoke Detectors

_Design Build:_
Count every stairwell at every level.

### Pull Stations

_Design Build:_
Count every stairwell at every level
and every exterior exit.

### Flow/Tamper Switches

No free-air. If wood frame, take off as EMT.

_Design Build:_
Count every stairwell at every level.

### Magnetic Door Holders

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`INDICATING DEVICES WITH WIRE - ...`/`MAGNETIC DOOR HOLDER - ...`

_Design Build:_
Count 2 for every set of double doors.
(Typical of elevator lobbies and corridors)

### Speaker Strobes

_Design Build:_
* Count every 75 ft,
    * measure with circles on Bluebeam
    * or divide relevant SF area by 4415
        * $\pi(\frac{75}{2})^2 \approx 4415$
* every elevator lobby,
* and every BOH room on the first floor and garage levels.

_Design Build (alt):_
* 15ft from end of corridor,
* then every 50ft

## Firefighter Phone System

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

Communicates directly with FACR.
Not related to responder radio.

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

## Fire Smoke Dampers (FSD's)

For each damper, take off both

`System` = "FA - Fire Alarm"

`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`INITIATING DEVICES ...`/`ADDRESSABLE OUTPUT RELAY MODULE ...`

and `System` = "EL - Electrical"

`COMMON ASSEMBLIES`/`MISC ASSEMBLIES`/`FSD ...`