Layout spacing requirements for hotel manual call points and fire broadcast speakers
I am fire protection expert Alexander Li. The issue you raised concerns the spacing of manual call points and fire broadcast speakers in a hotel's automatic fire alarm system. These two devices are core components of early-stage occupant alarm and evacuation guidance, and their reasonable layout directly affects system response speed and occupant safety. In actual projects, I have repeatedly seen cases where improper spacing led to alarm blind spots or evacuation confusion, so the standards must be strictly followed.
Spacing requirements for manual call points
According to Article 6.3.1 of the Code for Design of Automatic Fire Alarm Systems GB 50116-2013:
- At least one manual fire alarm call point shall be provided in each fire compartment.
- The walking distance from any location within a fire compartment to the nearest manual fire alarm call point shall not exceed 30 m.
1. Corridors and public areas: Hotel corridors are usually long (e.g., typical floors of high-rise hotels). Manual call points should be installed at conspicuous locations such as entrances/exits, stairwells, and elevator lobbies to ensure a walking distance of ≤30 m. For example, on the typical floor of a five-star hotel (60 m long), I installed one call point at each end and one in the middle, with spacing controlled at 20–25 m.
2. Guest room areas: Manual call points are generally not installed inside guest rooms, but evacuation routes (such as corridors) must be covered. Hotel guest room doors usually face the corridor; call points should preferably be installed on the corridor wall at 1.3–1.5 m above floor level.
3. Special areas: Additional call points are required in hazardous locations such as kitchens and boiler rooms, and the spacing may be reduced to 15–20 m.
Actual case: In a business hotel renovation project, the original design had only 2 call points in an 80 m corridor, resulting in a walking distance of 40 m. I adjusted it to 3 call points (25 m spacing) in accordance with the code, and it passed acceptance.
Spacing requirements for fire broadcast speakers
According to Article 6.6.1 and Appendix D of the Code for Design of Automatic Fire Alarm Systems GB 50116-2013:
- The installation of speakers shall ensure that the straight-line distance from any point within a fire compartment to the nearest speaker is not greater than 25 m.
- The speaker at the end of a corridor shall be no more than 12.5 m from the corridor end.
- In locations where ambient noise exceeds 60 dB, the speaker power shall be sufficient to cover the area, and the sound pressure level shall be 15 dB above the background noise.
1. Corridors and lobbies: Hotel corridors are about 1.5–2 m wide; speakers should be spaced at 25 m, but sound field uniformity must be considered. For example, in a resort hotel lobby 10 m high, I selected 6 W speakers and reduced the spacing to 20 m to ensure clarity.
2. Guest rooms: According to the code, speakers may be omitted in guest rooms, but hotels usually install small speakers (e.g., 3 W) near the bedside cabinet, interlocked with corridor broadcast, covering an area of about 10–15 m².
3. Noise control: Noise in hotel kitchens and laundries often reaches 70–80 dB. In such areas, I select 15 W speakers, reduce the spacing to 15 m, and verify by measurement that the sound pressure level is ≥85 dB.
Actual case: On the typical floor of a chain hotel with a 50 m corridor, I installed one speaker at each end in accordance with the code (25 m spacing) and one in the middle (12.5 m from the end); the sound pressure level met the standard at acceptance.
Integrated layout and coordinated optimization
In hotels, manual call points and fire broadcast speakers often share conduits or are installed on the same wall, but the following should be noted:
- Spacing coordination: The 30 m walking distance for call points and the 25 m straight-line distance for speakers do not conflict, but they should be coordinated during design. For example, a call point at the stairwell entrance and a speaker in the middle of the corridor would be about 10–15 m apart.
- Installation height: The center of call points should be 1.3–1.5 m above floor level, and speakers should preferably be 2.2–2.5 m above floor level (except ceiling-mounted types) to avoid obstruction.
- Interlock logic: After a manual call point is activated, it should interlock with the broadcast in the same fire compartment and adjacent compartments to initiate evacuation instructions.