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Urban AcousticsUrban AcousticsUrban AcousticsUrban AcousticsPresented By:Presented By:yy
Design Professionals
Lighting Design
Technology LightingAudio Video SystemsRoom Acoustics
AcousticsLighting DesignFixture Layout
Fixture Specification
Audio Video SystemsTelepresence
Sound Masking/Paging
Room AcousticsSound IsolationMechanical Noise
ControlsDaylighting
Structured CablingSecurity
Vibration IsolationEnvironmental Noise
“The Wood Products Council” is aRegistered Provider with The AmericanInstitute of Architects ContinuingEducation Systems (AIA/CES), Provider
This course is registered with AIA CES forcontinuing professional education. Assuch, it does not include content thatmay be deemed or construed to be an
l d t b th AIA f#G516. approval or endorsement by the AIA ofany material of construction or anymethod or manner ofhandling, using, distributing, or dealingin any material or product.
Credit(s) earned on completion of thiscourse will be reported to AIA CES forAIA members. Certificates of Completionfor both AIA members and non AIA
y p___________________________________________
Questions related to specific materials, methods,and services will be addressed at the conclusion ofthis presentation.
members are available upon request.p
Urban AcousticsSteve(n) Thorburn, PE, LEED AP, CTS I, CTS D, Thorburn Associates
As with any issue of building performance the acoustics of a mixed use wood frameAs with any issue of building performance, the acoustics of a mixed use wood framestructure can be designed to meet or far exceed minimal requirements. It is theresponsibility of the design team to determine acoustical expectations for the projectand meet them within the available budget.
Through the use of case studies, this fast paced, interactive session will explore howmulti story wood systems can be used to meet acoustical privacy goals. Discussion willfocus on the detailing and construction of units, and how consideration of theconstruction process can help keep acoustical costs down.construction process can help keep acoustical costs down.
With the objective of providing implementable solutions, the session will includeconstruction details and photos showing what has and hasn’t worked in actualbuildingsbuildings.
Learning Objectivesea g Object es
At the end of this program, participants will be able to:At the end of this program, participants will be able to:
Evaluate the acoustical impact of ICC Building Code vs. ResidentialExpectationsDevelop cost effective / acoustically centric space planning ideas for woodDevelop cost effective / acoustically centric space planning ideas for woodframe designProduce practical and constructible acoustical isolation detailing for woodframe designframe designIdentify common acoustical compromises during construction
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Mixed UseMixed Use
Urban AcousticsUrban AcousticsUrban AcousticsUrban Acoustics
The Building CodeThe Building CodeThe Building CodeThe Building Code
Acoustical Expectations
Luxury? Market Rate? Entry Level?
Slide 14
FHA Rules of Thumb from 1962
Entry Level HousingNOTE THIS IS NOT A CODE, IT HAS BECOME the DE FACTO STANDARD BUT NOT CODE
Entry Level HousingSTC 50 / IIC 50 (STC /IIC 48)*
Market Rate HousingMarket Rate HousingSTC 55 / IIC 55 (STC/IIC 52)*
Luxury Rate HousingLuxury Rate HousingSTC 60+ / IIC 60+ (STC/IIC 55)*
IIC 60+ very hard to achieve with wood or tile surfacesy
* Actual 1962 values – adjust when IBC set “50” as minimum
ICC G2 2010 Guideline for AcousticsSTILL NOT A CODE, IT IS FROM THE ICC –
FROMWHAT APPEARS TO BE A RESEARCH PAPER FROM THE INTERNET!
Acceptable Performance Preferred Performance“Grade B Performance”
55 / 52“Grade A Performance”
60 / 57(Laboratory / Field)Airborne STC / NNIC
(Laboratory / Field)Airborne STC / NNIC
Impact IIC / NISR Impact IIC / NISR
Land Use Compatibility For Community Noise
Exterior Day/Night Noise Levels (Ldn, dBA)Land Use Category
Single Family
55 60 65 70 75 80
Multi Family
Motel, HotelsMotel, Hotels
Outside Use
NormallyAcceptable
ConditionallyAcceptable
NormallyUnacceptable
ClearlyUnacceptable
Exterior to Interior
Mixed Use – Bar to Housing Commercial to Residential
BEFORE GET RID OF THE PROBLEM
Commercial to Residential
Not Addressed by Building Code- Implied at 45 dBA /Ldn
(Interior Noise Criterion)- Enforced as Nuisance Complaints
Urban AcousticsUrban AcousticsUrban AcousticsUrban Acoustics
VocabularyVocabularyVocabularyVocabulary
Terms (They Are Changing!)
SoundSTC
ImpactGeneralNR STC
FSTCIICFIIC
NRdBA
NICASTC
FIICAIICLdn
CNEL ASTCNNIC
NISRCNELOITC
NC NRC
Urban AcousticsUrban Acoustics VocabularyVocabulary
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AcousticalAcousticalAcousticalAcousticalWall SystemsWall SystemsWall SystemsWall Systems
Acoustical Detailing – The Givens
• Walls are Full Height(Deck to Deck)
• Insulated (Unfaced Batt)In all Stud or Joist Cavities
• Sealed Air TightSealed Air Tight• Floor Sheeting
Is Glued and ScrewedIs Glued and Screwed
Wall Progression – Sound Isolation
STC 34 STC 38 STC 45
Wall Progression – Sound Isolation
STC 50 STC 63 STC 49
Metal Channels
Hat ChannelsAre Not
Acoustical Channels
Resilient ChannelsAre
Acoustical ChannelsAcoustical Channels
Slide 30
Puck Resilient Isolator Lot Line Wall – Sound Isolation
Urban AcousticsUrban AcousticsUrban AcousticsUrban AcousticsAcousticalAcoustical
Floor / Ceiling SystemsFloor / Ceiling SystemsSound and ImpactSound and Impact
Floor Systems
STC 37
Floor Systems
STC 43
Floor Systems
STC 49
Floor Systems – Topping Slab
Gypcreteoror
Light Weigh Concrete
Floor Systems
STC 56
Floor Systems
STC 62
Floor Systems
Batt insulation not show for clarity
Floor Systems
Batt insulation not show for clarity
Floor Systems
Batt insulation not show for clarity
Floor Systems
Batt insulation not show for clarity
Impact Noise
Impact Isolation
• Impact noise changes as it travels in the building.• Impact noise is best controlled at the source.
Effects of Floor Coveringon Impact Isolationon Impact Isolation
IIC 73 IIC 64 IIC 56 IIC 43 IIC 32
Batt insulation not show for clarity
IIC 73 IIC 64 IIC 56 IIC 43
STC 56
Cross Laminated Timber
70+70+
Cross Laminated TimberACOUSTICALLY STILL REALLY NEW
We Need More Test DataWe Need More Test Data
70+In absence of test data we compareto known acoustical systems70+to known acoustical systems
Cross Laminated Timber
"Volume generallyassumed for the densityof hardened concrete is150 lb./ft3. (2400 kg/m3)“
McGraw Hill Encyclopediaf S i dof Science andTechnology.
Cross Laminated Timber
6 inch thick 20 lb./ft3. CLTSame Mass as
1.6 inch thick Concrete
Based on AcousticsMass Law STC Rating
b 38 STCabout 38 STC
Cross Laminated Timber Cross Laminated Timber
70+ IIC 3570+ IIC 35
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LeaksLeaks Doors and WindowsDoors and WindowsLeaksLeaks Doors and WindowsDoors and WindowsLeaks:Leaks: Where air can flow...
Slide 54...so will sound.
Air Tight Seal Insulation
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Other Issues to ConsiderOther Issues to ConsiderOther Issues to ConsiderOther Issues to Consider
Acoustical Fiction!
• Fiber Board
Acoustical Fiction!
• Trapped Channel
Plumbing Isolation
Slide 61 Slide 62
OMG!
THIS IS VERYBAD! DO NOTBELIEVE THEINTERNET!
OMG!
THIS IS VERYBAD! DO NOTBELIEVE THEINTERNET!
OMG!When it comes to AcousticsWhen it comes to AcousticsOnly Believe Real LaboratoryOnly Believe Real LaboratoryTest Data or Someone you PayTest Data or Someone you Pay
and can Sue!and can Sue!
Urban AcousticsUrban Acoustics
This concludes The AmericanInstit te of Architects Contin ingInstitute of Architects ContinuingEducation Systems Course Steve(n) Thorburn, PE, LEED AP
Thorburn Associates Inc.
This presentation was developedby a 3rd party and is not funded byWoodWorks or the Softwood
SJT@TA Inc.com
WoodWorks or the SoftwoodLumber Check Off Program
Credits• California Noise Control Office – Green Book (out
of print)• PAC International, Inc. (Risc 1 Isolator)
http://www.pac intl.com/• USG – Acoustics Collection of STC test reports (out
of print)• FHA Multifamily housing (out of print)• EPA Levels document (out of print)
• Gyp Crete http://www.maxxon.com/• Ceramic Tile Institute of America
http://www.ctioa.org/• The National Council of Acoustical ConsultantsEPA Levels document (out of print)
• USG Handbook for Gypsum Board Installation• ICC G2 2010 Guideline for Acoustics• Clark Dietrich Metal Framing
The National Council of Acoustical Consultantshttp://www.ncac.com/
• Thorburn Associates – http://www.TA Inc.com/• Mullins Acoustics http://mullinsacoustics.com/
www.clarkdietrich.com/• Homasote http://www.homasote.com/• National Gypsum Company
http://www nationalgypsum com/
• Lilly Acoustics http://www.jglacoustics.com/• WoodWorks.org• Cross Laminated Timber Handbook
http://www.nationalgypsum.com/
Urban AcousticsUrban AcousticsUrban AcousticsUrban AcousticsTh k Y !!!Th k Y !!!Thank You!!!Thank You!!!
St ( ) Th b PE LEED APSt ( ) Th b PE LEED APSteve(n) Thorburn, PE, LEED APSteve(n) Thorburn, PE, LEED APsjt@TAsjt@TA Inc comInc comsjt@TAsjt@TA Inc.comInc.com