thorburn - urban acoustics - 2016 10 18 · responsibility of the design team to determine...

UrbanAcoustics

Disclaimer:ThispresentationwasdevelopedbyathirdpartyandisnotfundedbyWoodWorksortheSoftwoodLumberBoard.

Steve(n)Thorburn,PE,LEEDAP,CTS-I,CTS-D [email protected],TECHNOLOGY, ANDLIGHTING DESIGNHORBURN ASSOCIATES

“TheWoodProductsCouncil” isaRegisteredProviderwithTheAmerican InstituteofArchitectsContinuingEducationSystems(AIA/CES),Provider#G516.

Credit(s)earnedoncompletionofthiscoursewillbereportedtoAIACES forAIAmembers.CertificatesofCompletionforbothAIAmembersandnon-AIAmembersareavailableuponrequest.

ThiscourseisregisteredwithAIACESforcontinuingprofessionaleducation.Assuch,itdoesnotincludecontentthatmaybedeemedorconstruedtobeanapprovalorendorsementbytheAIAofanymaterialofconstructionoranymethodormannerofhandling,using,distributing,ordealing inanymaterialorproduct.

______________________________Questionsrelatedtospecificmaterials,methods,andserviceswillbeaddressedattheconclusionofthispresentation.

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

At the end of this program, participants will be able to:

- EvaluatetheacousticalimpactofICCBuildingCodevs.ResidentialExpectations

- Developcosteffective/acousticallycentricspaceplanningideasforwoodframedesign

- Producepracticalandconstructibleacousticalisolationdetailingforwoodframedesign

- Identifycommonacousticalcompromisesduringconstruction

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.

Mixed Use

UrbanAcoustics

TheBuildingCode

OurGoalControltheTransferofNoise!

AcousticalExpectations

Luxury? MarketRate? EntryLevel?

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

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!

LandUseCompatibilityForCommunityNoise

ExteriorDay/NightNoiseLevels(Ldn,dBA)LandUseCategory

SingleFamily

MultiFamily

Motel,Hotels

OutsideUse

55 60 65 70 75 80

NormallyAcceptable

ConditionallyAcceptable

NormallyUnacceptable

ClearlyUnacceptable

ExteriortoInterior

MixedUse– BartoHousing

CommercialtoResidential

BEFORE GETRIDOFTHEPROBLEM

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

UrbanAcoustics

Vocabulary

Terms(TheyAreChanging!)SoundSTCFSTCNICASTCNNIC

ImpactIICFIICAIICNISR

GeneralNRdBALdnCNELOITC

NC NRC

NoiseInBuildings

UrbanAcoustics - Vocabulary

AcousticalTestLaboratory

AcousticalTestChamber

HowSTCorIICRatingIsFound

7 8 10 9 86 4 3

3

2


6 7 98 7

5 3 2

2

1


5 6 8 7 64 2 1

1


4 5 7 6 53 1

AcousticalDetailingisSystems

UrbanAcoustics

AcousticalWallSystems

AcousticalDetailing– TheGivens• WallsareFullHeight

(DecktoDeck)• Insulated (UnfacedBatt)

InallStudorJoistCavities• SealedAirTight• FloorSheeting

IsGluedandScrewed

WallProgression– SoundIsolation

STC34 STC38 STC45

WallProgression– SoundIsolation

STC50 STC63 STC49

MetalChannels

HatChannelsAreNot

AcousticalChannels

ResilientChannelsAre

AcousticalChannels

HatChannelResilientIsolators

LotLineWall– SoundIsolation

UrbanAcousticsAcoustical

Floor/CeilingSystemsSoundandImpact

FloorSystems

STC37

FloorSystems

STC43

FloorSystems

STC49

FloorSystems– ToppingSlab

Gypcreteor

LightWeighConcrete

FloorSystems

STC56

FloorSystems

STC62

FloorSystems

Battinsulationnotshowforclarity

IndependentlyFramedCeilingSystem

ImpactNoise

TheTapper

ImpactIsolation

• Impactnoisechangesasittravelsinthebuilding.• Impactnoiseisbestcontrolledatthesource.

EffectsofFloorCoveringonImpactIsolation

Battinsulationnotshowforclarity

IIC73 IIC64 IIC56 IIC43 IIC32

STC56

Cross-LaminatedTimber

70+


70+

ACOUSTICALLYSTILLREALLYNEW

WeNeedMoreTestData

Inabsenceoftestdatawecomparetoknownacousticalsystems


"Volumegenerallyassumedforthedensityofhardenedconcreteis150 lb./ft3.(2400 kg/m3)“

McGraw-HillEncyclopediaofScienceandTechnology.


6inchthick20 lb./ft3.CLTSameMassas

1.6inchthickConcrete

BasedonAcousticsMassLawSTCRating

about38STC


70+ IIC 35

UrbanAcoustics

Leaks- DoorsandWindows

Leaks: Where air can flow...

...so will sound.

AirTightSeal

BattInsulation

BlowInInsulation

OPENCELLFOAMCLOSEDCELLFOAMCELLULOUS/FIBER

Rigid“Foam”Insulation

UrbanAcoustics

OtherIssuestoConsider

AcousticalFiction!

• FiberBoard

AcousticalFiction!

• TrappedChannel

TrappedAirSpaceandScrews

STC55

STC38

InstallationIssues- RC

PlumbingIsolation

OtherNoiseIssues

CondominiumNoise

NowWeSeetheProblem

InstallationIssues- RC

SprinklerLines/Heads

RESILIENTCEILINGSYSTEMS

DuctWork

HOLESINSYSTEMS

RecessedLightFixtures

RESILIENTCHANNELSINSTALLATION

FramingIssues

FramingIssues…(okPlumbing)

ACOUSTICALGYPSUMBOARD

DAMPING

OMG!

THISISVERYBAD!DONOTBELIEVETHEINTERNET!

WhenitcomestoAcousticsOnlyBelieveRealLaboratoryTestDataorSomeoneyouPay

andcanSue!

ThisconcludesTheAmericanInstituteofArchitectsContinuingEducationSystemsCourse

QUESTIONS?

Steve(n)Thorburn,PE,LEEDAP

ThorburnAssociatesInc.

[email protected]

UrbanAcousticsThankYou!!!

Steve(n)Thorburn,PE,[email protected]

thorburn - urban acoustics - 2016 10 18 · responsibility of the design team to determine...

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