THORBURN - Urban Acoustics - 2016 10 18 · responsibility of the design team to determine...
Transcript of THORBURN - Urban Acoustics - 2016 10 18 · responsibility of the design team to determine...
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UrbanAcoustics
Disclaimer:ThispresentationwasdevelopedbyathirdpartyandisnotfundedbyWoodWorksortheSoftwoodLumberBoard.
Steve(n)Thorburn,PE,LEEDAP,CTS-I,CTS-D [email protected],TECHNOLOGY, ANDLIGHTING DESIGNHORBURN ASSOCIATES
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“TheWoodProductsCouncil” isaRegisteredProviderwithTheAmerican InstituteofArchitectsContinuingEducationSystems(AIA/CES),Provider#G516.
Credit(s)earnedoncompletionofthiscoursewillbereportedtoAIACES forAIAmembers.CertificatesofCompletionforbothAIAmembersandnon-AIAmembersareavailableuponrequest.
ThiscourseisregisteredwithAIACESforcontinuingprofessionaleducation.Assuch,itdoesnotincludecontentthatmaybedeemedorconstruedtobeanapprovalorendorsementbytheAIAofanymaterialofconstructionoranymethodormannerofhandling,using,distributing,ordealing inanymaterialorproduct.
______________________________Questionsrelatedtospecificmaterials,methods,andserviceswillbeaddressedattheconclusionofthispresentation.
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Aswithanyissueofbuildingperformance,theacousticsofamixed-usewood-framestructurecanbedesignedtomeetorfarexceedminimalrequirements.Itistheresponsibilityofthedesignteamtodetermineacousticalexpectationsfortheprojectandmeetthemwithintheavailablebudget.
Throughtheuseofcasestudies,thisfast-paced,interactivesessionwillexplorehowmulti-storywoodsystemscanbeusedtomeetacousticalprivacygoals.Discussionwillfocusonthedetailingandconstruction ofunits,andhowconsiderationoftheconstruction processcanhelpkeepacousticalcostsdown.
Withtheobjectiveofprovidingimplementablesolutions, thesessionwillincludeconstruction detailsandphotos showingwhathasandhasn’tworkedinactualbuildings.
Steve(n)Thorburn,PE,LEEDAP,CTS-I,CTS-D,[email protected]
UrbanAcoustics– CourseDescription
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At the end of this program, participants will be able to:
- EvaluatetheacousticalimpactofICCBuildingCodevs.ResidentialExpectations
- Developcosteffective/acousticallycentricspaceplanningideasforwoodframedesign
- Producepracticalandconstructibleacousticalisolationdetailingforwoodframedesign
- Identifycommonacousticalcompromisesduringconstruction
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Copyright Materials
This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of the speaker is
prohibited.
© Thorburn Associates Inc.
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Mixed Use
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UrbanAcoustics
TheBuildingCode
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OurGoalControltheTransferofNoise!
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Slide16
AcousticalExpectations
Luxury? MarketRate? EntryLevel?
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Entry Level HousingSTC 50 / IIC 50 (STC /IIC 48)*
Market Rate HousingSTC 55 / IIC 55 (STC/IIC 52)*
Luxury Rate HousingSTC 60+ / IIC 60+ (STC/IIC 55)*
IIC 60+ very hard to achieve with wood or tile surfaces
* Actual 1962 values – adjust when IBC set “50” as minimum
FHARulesofThumbfrom1962NOTETHISISNOTACODE,ITHASBECOMEtheDEFACTOSTANDARDBUTNOTCODE
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ICCG22010 GuidelineforAcoustics
AcceptablePerformance“GradeBPerformance”
55/52(Laboratory/Field)Airborne- STC/NNICImpact- IIC/NISR
PreferredPerformance“GradeAPerformance”
60/57(Laboratory/Field)Airborne- STC/NNICImpact- IIC/NISR
STILLNOTACODE,ITISFROMTHEICC–FROMWHATAPPEARSTOBEARESEARCHPAPERFROMTHEINTERNET!
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LandUseCompatibilityForCommunityNoise
ExteriorDay/NightNoiseLevels(Ldn,dBA)LandUseCategory
SingleFamily
MultiFamily
Motel,Hotels
OutsideUse
55 60 65 70 75 80
NormallyAcceptable
ConditionallyAcceptable
NormallyUnacceptable
ClearlyUnacceptable
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ExteriortoInterior
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MixedUse– BartoHousing
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CommercialtoResidential
BEFORE GETRIDOFTHEPROBLEM
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Not Addressed by Building Code- Implied at 45 dBA /Ldn
(Interior Noise Criterion)- Enforced as Nuisance Complaints- Enforced by “Local Codes”
THIS IS CHANGING – THE IgCC IS PLACING LIMITS ON
COMMERCIAL TO RESIDENTIAL
CommercialtoResidential
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UrbanAcoustics
Vocabulary
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Terms(TheyAreChanging!)SoundSTCFSTCNICASTCNNIC
ImpactIICFIICAIICNISR
GeneralNRdBALdnCNELOITC
NC NRC
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NoiseInBuildings
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UrbanAcoustics - Vocabulary
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AcousticalTestLaboratory
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AcousticalTestChamber
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HowSTCorIICRatingIsFound
7 8 10 9 86 4 3
3
2
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HowSTCorIICRatingIsFound
6 7 98 7
5 3 2
2
1
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HowSTCorIICRatingIsFound
5 6 8 7 64 2 1
1
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HowSTCorIICRatingIsFound
4 5 7 6 53 1
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AcousticalDetailingisSystems
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UrbanAcoustics
AcousticalWallSystems
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AcousticalDetailing– TheGivens• WallsareFullHeight
(DecktoDeck)• Insulated (UnfacedBatt)
InallStudorJoistCavities• SealedAirTight• FloorSheeting
IsGluedandScrewed
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WallProgression– SoundIsolation
STC34 STC38 STC45
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WallProgression– SoundIsolation
STC50 STC63 STC49
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MetalChannels
HatChannelsAreNot
AcousticalChannels
ResilientChannelsAre
AcousticalChannels
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Slide40
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HatChannelResilientIsolators
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HatChannelResilientIsolators
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LotLineWall– SoundIsolation
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UrbanAcousticsAcoustical
Floor/CeilingSystemsSoundandImpact
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FloorSystems
STC37
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FloorSystems
STC43
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FloorSystems
STC49
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FloorSystems– ToppingSlab
Gypcreteor
LightWeighConcrete
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FloorSystems
STC56
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FloorSystems
STC62
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FloorSystems
Battinsulationnotshowforclarity
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FloorSystems
Battinsulationnotshowforclarity
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FloorSystems
Battinsulationnotshowforclarity
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FloorSystems
Battinsulationnotshowforclarity
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IndependentlyFramedCeilingSystem
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ImpactNoise
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TheTapper
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ImpactIsolation
• Impactnoisechangesasittravelsinthebuilding.• Impactnoiseisbestcontrolledatthesource.
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EffectsofFloorCoveringonImpactIsolation
Battinsulationnotshowforclarity
IIC73 IIC64 IIC56 IIC43 IIC32
STC56
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Cross-LaminatedTimber
70+
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Cross-LaminatedTimber
70+
ACOUSTICALLYSTILLREALLYNEW
WeNeedMoreTestData
Inabsenceoftestdatawecomparetoknownacousticalsystems
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Cross-LaminatedTimber
"Volumegenerallyassumedforthedensityofhardenedconcreteis150 lb./ft3.(2400 kg/m3)“
McGraw-HillEncyclopediaofScienceandTechnology.
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Cross-LaminatedTimber
6inchthick20 lb./ft3.CLTSameMassas
1.6inchthickConcrete
BasedonAcousticsMassLawSTCRating
about38STC
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Cross-LaminatedTimber
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Cross-LaminatedTimber
70+ IIC 35
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UrbanAcoustics
Leaks- DoorsandWindows
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Slide67
Leaks: Where air can flow...
...so will sound.
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AirTightSeal
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BattInsulation
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BlowInInsulation
OPENCELLFOAMCLOSEDCELLFOAMCELLULOUS/FIBER
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Rigid“Foam”Insulation
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UrbanAcoustics
OtherIssuestoConsider
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AcousticalFiction!
• FiberBoard
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AcousticalFiction!
• TrappedChannel
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TrappedAirSpaceandScrews
STC55
STC38
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InstallationIssues- RC
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PlumbingIsolation
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OtherNoiseIssues
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CondominiumNoise
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NowWeSeetheProblem
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InstallationIssues- RC
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InstallationIssues- RC
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Slide83
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Slide84
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SprinklerLines/Heads
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RESILIENTCEILINGSYSTEMS
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DuctWork
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HOLESINSYSTEMS
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RecessedLightFixtures
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RESILIENTCHANNELSINSTALLATION
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FramingIssues
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FramingIssues…(okPlumbing)
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ACOUSTICALGYPSUMBOARD
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DAMPING
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OMG!
THISISVERYBAD!DONOTBELIEVETHEINTERNET!
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OMG!
THISISVERYBAD!DONOTBELIEVETHEINTERNET!
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OMG!
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WhenitcomestoAcousticsOnlyBelieveRealLaboratoryTestDataorSomeoneyouPay
andcanSue!
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ThisconcludesTheAmericanInstituteofArchitectsContinuingEducationSystemsCourse
QUESTIONS?
Steve(n)Thorburn,PE,LEEDAP
ThorburnAssociatesInc.
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