The soundproofing focuses on reduction of the noise transmission between two enclosures or in general, between one enclosure and the other. The soundproofing modifies the difference between sound pressure level L1 in a transmitting room and sound pressure level L2 in a receiving room.
GENERATOR ROOM SOUNDPROOFING
The type of noise produced in big diesel engines, such as power stations that this report is about, is a noise of low frequency, in other words, with a significantly large acoustic energy in the frequency range of 8 to 100Hz. It is a type of noise very difficult to damp and is propagated easily in all the directions.
MEETING ROOMS - SOUNDPROOFING WALLS
Following the recomendations of LEED PILOT CREDIT 24: Acoustic, we need to bear in mind the following composite Sound Transmission Class (STCC) ratings:
A jacency Combinations
Residence or Hotel/Motel Room
Residence or Hotel/Motel Room
Residence or Hotel/Motel Room
Retail
Standard Office
Executive Office
Conference Room
Office/Conference Room
Mechanical Equipment Room
-
Residence or Hotel/Motel Room
Common Hallway/Stairway
Retail
Retail
Standard Office
Executive Office
Conference Room
Hallway/Stairway
Occupied Area
STC C
55
50
60
50
45
50
50
50
60
WOODEN SOUNDPROOF DOOR
Rw(C;Ctr) = 38(-1;-6)dB
Rw(C;Ctr) = 38(-1;-6)dB
METAL SOUNDPROOF DOOR
Rw(C;Ctr) = 54(-2;-8)dB - 38(-2;-3)dB