Restaurant Acoustic Design in France — NRA 2000 Requirements
Restaurants, cafes, bars, food halls. Typical volume: 200-2,000 m³.
What NRA 2000 Requires for a Restaurant in France
Regulation: NRA — guidance for ERP
RT60 target: ≤ 0.8s
Background noise limit: 45–55 dBA
Local note: French restaurant acoustic design balances ambience with conversation quality.
How to Calculate NRA 2000 Compliance for a Restaurant in France
- 1
Identify the applicable France standard and target
Look up NRA 2000 for restaurant spaces in France. The RT60 target is ≤ 0.8s. NRA — guidance for ERP.
- 2
Measure or model the room geometry
Record the length, width, and height of the room to calculate the volume. A typical restaurant has a volume of 200-2,000 m³.
- 3
List all surfaces and their absorption coefficients
For each surface (floor, ceiling, walls, windows, doors), find the absorption coefficient at each octave band frequency (125 Hz to 4 kHz) from ISO 354 test data or a materials database.
- 4
Calculate total absorption and apply the Sabine or Eyring equation
Sum all surface absorption values: A = sum of (alpha x area). Then apply T60 = 0.161 x V / A (Sabine) or T60 = -0.161 x V / (S x ln(1 - alpha_avg)) (Eyring). Use Eyring when average alpha exceeds 0.20.
- 5
Compare result against NRA 2000 and specify treatment
If the calculated RT60 exceeds the target of ≤ 0.8s, specify additional absorption. Typical treatment cost in France is €60–€110/m².
Cost of Compliance in France
Treatment Cost Range
€60–€110/m²
Currency: €
What Affects Cost
- • Room volume and surface area
- • Target standard strictness
- • Existing acoustic conditions
- • Finish and material quality
Frequently Asked Questions
What RT60 does NRA 2000 require for a restaurant in France?
NRA 2000 requires a reverberation time of ≤ 0.8s for restaurant spaces in France. NRA — guidance for ERP. Measurement should be performed per ISO 3382-2 methodology.
What is the background noise limit for a restaurant in France?
The background noise limit is 45–55 dBA under NRA 2000. This typically refers to HVAC and building services noise measured with the room unoccupied.
How much does acoustic treatment cost for a restaurant in France?
Typical acoustic treatment for a restaurant in France costs €60–€110/m². Costs vary based on finish quality, room size, and existing conditions.
Calculate NRA 2000 Compliance for Your Restaurant in France
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