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31A - 100 W. MACARTHUR BLVD.
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31A - 100 W. MACARTHUR BLVD.
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Last modified
1/3/2012 4:55:13 PM
Creation date
5/31/2005 5:11:08 PM
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City Clerk
Doc Type
Agenda Packet
Item #
31A
Date
6/6/2005
Destruction Year
2010
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<br /> Barrier Attenuation <br /> At WindowlBalcony <br /> Height <br /> Barrier Source Receiver Tranmission Loss <br /> 11 <br /> Distances <br /> barrier to <br /> source to barrier receiver <br /> N <br /> 0.02 0.05 0.09 0.19 0.37 0.75 1.49 2.99 <br /> Frequencies <br /> 63 125 250 500 1000 2000 4000 8000 <br /> 17.95 9.05 4.52 2.26 1.13 0.57 0.28 0.14 <br /> ARG <br /> 0.38 0.54 0.77 1.08 1.53 2.17 3.06 4.33 <br /> Attenuation <br /> 0.41 0.80 1.50 2.69 4.52 6.94 9.76 12.74 <br /> 5 5 5 5 5 5 5 5 <br /> 5.41 5.80 6.50 7.69 9.52 11.94 14.76 17.74 <br /> ref spectrum <br /> 65 65 65 65 65 65 65 65 <br />#### 2283.560044 20914.2 89152.9 269546 353454 254504 132949 42280.93 71.961 <br /> 7943.282347 79432.8 398107 1584893 3162278 3981072 3981072 2511886 <br />I Ji 11-11 II I 60.66357 11.297 <br /> <br />HEIGHTS (in ft.) <br />Source: 8 <br />Barrier: 12 <br />Receiver: 17 <br /> <br />Distances (in ft.) <br />Source to Barrier: 20 <br />Barrier to Receiver: 120 <br /> <br />Spectrum <br />Attenuation <br />Final SPL <br /> <br />63 <br />65 <br />5.4 <br />59.6 <br /> <br />Octave Band Center Frequencies (Hertz) <br />125 I 250 I 500 I 1000 I 2000 I 4000 <br />65 65 65 65 65 65 <br />5.8 6.5 7.7 9.5 11.9 14.8 <br />59.2 58.5 57.3 55.5 53.1 50.2 <br /> <br />8000 <br />65 <br />17.7 <br />47.3 <br /> <br />Transmission Loss: 11 <br /> <br />Note: These results were based on Leo Beranek's method for <br />barrier calculations(1). The method incorporates Makawa's <br /> <br />1. Leo L. Beranek, "Acoustics", Acoustical Society of America, P,348 (1996) <br /> <br />3t~~12 <br />
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