ben shafer asa san diego2011 tues aft 2p aa v7
DESCRIPTION
This is an invited presentation given at the San Diego ASA meeting, 2011, on the uses and application of constrained-layer damping in building noise control and future research in this regard.TRANSCRIPT
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Use of damped drywall
in architectural
acoustics
Benjamin M. Shafer, Acoustician
Brandon Tinianov, LEED AP
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Acknowledgements
• John LoVerde
• Gary Mange
• David Moyer
• Dave Berg
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• Introduction to QuietRock
• CLD theory
• Building construction
applications
• Discoveries and realizations
• The Future of Damped
Drywall
Outline
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QuietRock Birth
High TL
Hard to
Cut
Costly
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QuietRock Today
High TL
Easy to
Cut
$$
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Constrained-Layer Damping (CLD)
Shear loading of the damping layer causes decreased
displacement, converting mechanical energy (vibration) into
heat1
1L. Cremer, M. Heckl, E.E. Ungar, Structure-Borne Sound, 2nd Edition, Springer-Verlag, Berlin, Heidelberg, Germany (1988), pg. 247.
CLD Theory
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CLD Theory2
a d2
d1
d3
1
2
3
2I. Vér, L. Beranekl, E. Ungar, J. Zapfe, Noise and Vibration Control Engineering, John Wiley & Sons, Inc., Hoboken, NJ, USA (2006), pp. 602-607.
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CLD Theory
102
103
0
0.1
0.2
0.3
0.4
0.5
Frequency (Hz)
Lo
ss
fa
cto
r,
Composite Loss Factor () Comparisons
QuietRock ES
5/8" Type X
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CLD Theory
102
103
0
10
20
30
40
50
60
Frequency (Hz)
Tra
nsm
iss
ion
Lo
ss (
dB
)
TL Comparison, QR ES vs. 5/8'' Type X
QuietRock ES5/8'' Type X
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0
10
20
30
40
50
60
63 100 160 250 400 630 1000 1600 2500 4000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
Laboratory TL Comparison, QR ES vs. 5/8" Type X
QuietRock ES, STC 31, TL11-511
5/8" Type X, STC 28, TL11-503
CLD Theory
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Building Applications, Wood
Sgl. 2X4
16” OC
Sgl. 2X4
24” OCStgd. 2X4
8” OC
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Building Applications, Wood
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
ns
mis
sio
n L
oss (
dB
)
Frequency (Hz)
TL Comparison, Single 2X4 Wood 16" OC
X/X, TL09-257 (35)QR ES/X, TL09-256 (41)QR ES/QR ES, TL09-255 (41)
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Building Applications, Wood
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
TL Comparison, Single 2X4 Wood 24" OC
X/X, OL11-0313 (43)QR ES/X, OL11-0314 (51)QR ES/QR ES, OL11-0320 (54)
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Building Applications, Wood
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
TL Comparison, QuietRock ES
Sgl 16OC, TL09-255 (41)Sgl 24OC, OL11-0320 (54)QR ES/X Stgd 8OC, TL10-120 (55)QR ES/X+X Stgd 8OC, TL10-121 (60)
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Building Applications, Single Steel
HvGa. 3-5/8”
16” OC
HvGa. 6”
16” OC
LtGa. 3-5/8”
24” OC
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Building Applications, 3-5/8” Steel
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
TL Comparison, S&V March ‘103
X/X 25ga 24OC, TL06-233 (43)
X/X+X 25ga 24OC, TL06-232 (48)
3Aaron Bétit, Veneklasen Associates, “Performance Details of Metal Stud Partitions,” Sound and Vibration Magazine, March 2010, pp. 14–16.
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3Aaron Bétit, Veneklasen Associates, “Performance Details of Metal Stud Partitions,” Sound and Vibration Magazine, March 2010, pp. 14–16.
Building Applications, 3-5/8” Steel
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
TL Comparison, S&V March '103
X/X 25ga 24OC, TL06-233 (43)
X/X+X 25ga 24OC, TL06-232 (48)
X/X 16ga 16OC, TL06-246 (38)
X/X+X 16ga 16OC TL06-247 (42)
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Building Applications, 3-5/8” Steel
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
QuietRock ES, 16ga. 16” OC
X/X+X 16ga 16OC, TL10-392 (42)
QR ES/X 16ga 16OC, TL10-393 (43)
QR ES/QR ES 16ga 16OC, TL10-394 (48)
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Building Applications, 6” Steel
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
TL Comparison, 16Ga. 16" OC
X/X+X 16ga 16OC, TL10-397 (44)
QR ES/X 16ga 16OC, TL10-398 (49)
QR ES/QR ES 16ga 16OC, TL10-399 (53)
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Building Applications, 3-5/8” Steel
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
TL Comparison, 25Ga. 24" OC
X/X 25ga 24OC, OL11-0332b (49)
QR ES/X 25ga 24OC, OL11-0333 (55)
QR ES/X+X 25ga 24OC, OL11-0334 (60)
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Building Applications, 3-5/8” Steel
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
TL Comparison, QuietRock ES
QR ES/QR ES 16ga 16OC, TL10-394 (48)QR ES/QR ES 6" 16ga 16OC, TL10-399 (53)QR ES/X 25ga 24OC, OL11-0333 (55)QR ES/X+X 25ga 24OC, OL11-0334 (60)
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Discoveries and Realizations
6772 69
76
60
65
70
75
80
85
90
Spe
ech
Pri
vacy
Cla
ss (
SPC
)
Sgl. 3-5/8” HvGa. Steel 16” OC w/ 3-1/2” Insulation
X+X / X QR ES / X X+X / X+X QR ES / QR ES
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Discoveries and Realizations
0
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
QuietRock ES, 16" OC vs 24" OC
QR ES/X 16ga 16OC, TL10-393 (43)
QR ES/X 16ga 24OC, TL10-395 (49)
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Discoveries and Realizations
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
Same Exact Wall, Different Laboratory
Lab OneLab Two
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Discoveries and Realizations
10
20
30
40
50
60
70
80
80 125 200 315 500 800 1250 2000 3150 5000
Tra
nsm
issio
n L
oss (
dB
)
Frequency (Hz)
QuietRock / X vs X+X+X+X+X / X+X+X+X
QuietRock
8-Layer
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The Future of Damped Drywall
ProgressTheory/Model
Optimization
Laboratory Investigation
Independent Field Testing
System Analysis
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Thank you
Questions?