Shafer Pabco石膏

1、 what the job demandsModernizing speech privacy in commercial buildings with sound-damping gypsum wallboardPresented by Ben ShaferOctober 26th, 2015 OUTLINE Why we need privacy What is speech privacy class (SPC) Traditional methodology (mass) Innovative technology (CLD) CLD for SPC Concluding discus

2、sionWhy Speech Privacy?Why Speech Privacy?GrowthSpaceLucintel(2012).“GlobalCommercialConstructionIndustry2012-2017Trend,Profit,andForecastAnalysis,April2012.Retrievedfromhttp:/ Speech Privacy?Why Speech Privacy?DissatisfactionCenterFortheBuiltEnvironment(2007).“SpeechPrivacyinOfficeEnvironments,”,Re

3、trievedfrom/research/acoustics.htm.Why Speech Privacy?LETS GETCREATIVE!What is SPC?What is SPC?BACKGROUNDNOISE3ASTMSubcommitteeE33.03,ASTMInternational,Standard Test Method for Objective Measurement of the Speech Privacy Provided by a Closed Room,ASTMStandardE2638-10,ASTMIn

4、ternational,WestConshohocken,Pennsylvania,(2010).SOUND TRANSMISSION LOSS (STL)= SPCWhat is SPC?606570758085Speech Privacy Class (SPC)POOR SPEECH PRIVACYSTANDARD SPEECH PRIVACY(one or two words occasionally intelligible and frequently audible)Mass and SPCMass and SPC676978606570758085Speech Privacy C

5、lass (SPC)Single 90 mm SteelX+X / 16-ga. 406 mm O.C. / XX+X / 16-ga. 406 mm O.C. / X+X16-ga. 406 mm O.C.X / 25-ga. 610 mm O.C. / XConstrained-Layer Damping (CLD)Constrained-Layer Damping (CLD)Shear loading of the damping layer causes decreased displacement, converting mechanical energy (vibration) i

6、nto heat22L.Cremer,M.Heckl,E.E.Ungar,Structure-Borne Sound, 2nd Edition,Springer-Verlag,Berlin,Heidelberg,Germany(1988),pg.247.Constrained-Layer Damping (CLD)102103102030405060Frequency (Hz)Transmission Loss (dB)Damped vs Undamped Sound Transmission LossCLDPanelGypsumWallboardPanelCLD for Speech Pri

7、vacy ClassORCLD for Speech Privacy Class6TL10-391,TL10-394CLD for Speech Privacy Class69766065707580Speech Privacy Class (SPC)Single 90 mm Steel with 90 mm InsulationX+X / 16-ga. 406 mm O.C. / X+XCLD / 16-ga. 406 mm O.C. / CLDMass and SPC676978606570758085Speech Privacy Class (SPC)Single 90 mm SteelX+X / 16-ga. 406 mm O.C. / XX+X / 16-ga. 406 mm O.C. / X+X16-ga. 406 mm O.C.X / 25-ga. 610 mm O.C. / XCLD for Speech Privacy Class78766065707580Speech Privacy Class (SPC)Single 90 mm Steel with 90 mm InsulationX / 25-ga. 610 mm O.C. / XCLD / 16-ga. 406 mm