---
id:
aliases:
  - area-of-rescue
  - two-way-communication
  - 2-way-communication
tags:
  - occupational/systems/standalone-systems
---
# Area of Refuge (AoR)

## Info

> [!info] Also Known As
> * Area of Rescue
> * 2-Way Communication

### 2-Way vs. AoR

Area of Refuge is defined in NFPA 101 _Life Safety Code_.

In NFPA 101 "two-way communication system" is used as generic term,
to be installed in accordance with the governing code NFPA 72.

NFPA 72 _Fire Alarm and Signaling Code_, Chapter 24 _Emergency Communications Systems (ECS)_

24.8 Two-Way, In-Building Wired Emergency Services Communications Systems

24.10 Area of Refuge (Area of Rescue Assistance) Emergency Communications Systems,
Stairway Communications Systems, Elevator Landing Communications Systems,
and Occupant Evacuation Elevator Lobby Communications Systems.

## Sequence

### 1. Estimate preparation

Complete [[fire-alarm]] preparation and takeoff.

### 2. Takeoff

##### Horizontal

> Area: Same as Fire Command Room

`FIRE ALARM & DAS SYSTEMS`/`TWO WAY COMMUNICATION ASSEMBLIES`/`...`

* Length: Per drawings if shown, otherwise use longer of
    * FCR to elevator lobbies
    * FCR to stairwells
* Count: Number of boxes run to. Per drawings if shown, otherwise use the greater of:
    * Count of elevators
    * Count of stairwells

##### Vertical

> Area: "Typical - Building All Levels"

`FIRE ALARM & DAS SYSTEMS`/`TWO WAY COMMUNICATION ASSEMBLIES`/`...`

* Length: 15ft x per count
* Count: match Horizontal
 
### 3. Extension (Review and Checking)
