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	https://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