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Description of the BSK

1.Description of the Soundproofing Association

Foundation

April 10 1988 (Soundproof Construction Association)
October 1 1998(Soundproofing Association)

Office 2-14-2 Ikebukuro Toshima-ku Tokyo Japan
Tel +813-5953-8121
Fax +813-5953-8862
URL http://www.bouonsetsubikyokai.jp/

Members of Association

Daimaru-bouon Co.,Ltd
Tohyu Eco Support Co.,Ltd
YACMO.Co.,Ltd

Activities

  • 1:Contacting public, request and expression our opinions to the public.
  • 2:To investigate the demand and the market.
  • 3:To spread and promote the public planning.
  • 4:Research the sound-proof technology.
  • 5:To establish the association standards(for acoustic)
  • 6:Publicity work.

2.It is important when designing

  • (1) Examine limits of noise by law
  • (2) Limits of noise by law varies by the country
  • (3) Decide the Characteristics of the sound source
  • (4) Normalize the acoustic characteristics of the sound insulation panel (noise barrier)
  • (5) Do the structural design of soundproof House
  • (6) Structural design of soundproof House varies by the country
  • (7) Do estimate

3.Contents of the Design&Estimate Standards of Temporary Soundproofing Equipment

Table of contents

  • First chapter
    • Basis of sound
      • (1)Basic amount of sound
      • (2)Method of measuring the noise
      • (3)Display method of soundproofing material performance
  • Chapter 2
    • Temporary Soundproofing
      • (1)Measures target value and Measures target point
      • (2)Performance of soundproof panel
      • (3)Sound source of Shield tunneling method
      • (4)Sound source of Jacking method
      • (5)Sound source of Mountain tunnel
      • (6)Acoustic formula
      • (7)Calculation condition
  • Chapter 3
    • Structural design
      • (1)Structural calculation
      • (2)Construction scale
      • (3)Fixtures and fittings Door and Ventilation duct and Shutter
      • (4)Unit weight of steel by Facilities
      • (5)Concrete foundation
  • Chapter 4
    • Ultra-low-frequency Infrasonic sound
      • (1)For ultra-low-frequency Infrasonic sound
      • (2)Measurement methods and evaluation
  • Chapter 5
    • Estimate procedure
      • (1)Cost of assembly and disassembly
      • (1)-1 Cost of assembly
      • (1)-2 Cost of soundproofing material
      • (1)-3 Cost of steel material
      • (1)-4 Cost of disassembly
      • (1)-5 Transportation costs

4.Soundproof panel performance

Type BSK-C(for example)

Item Center Frequency (Hz)
125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz
Transmission loss (dB) 24 30 37 39 42 40
Sound absorption
coefficient (%)
28 64 85 87 79 73

5.In order to design a soundproof house

In order to design a soundproof house