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<br />IT 16187, Santa Ana <br />Shea Homes - Greg Kibble 714-985-3698 <br />REPORT #05-72 <br />FRED I MIKE; May 2005 <br /> <br />CASE 7 : <br />(added 9.2005) <br />BUlLDING ELEMENT <br /> <br />Window (operable) <br />Shileded Window (operable) <br />W,," <br />Roof I Ceiling (top floor) <br /> <br />TOTAL AREA (ft^2) <br />10 Log SIA <br /> <br />EXTERIOR NOISE LEVEL: <br />INTERIOR STANDARD : <br />REDUCTION REQUIRED: <br /> <br />83.6 <br />45.0 <br />38.6 <br /> <br />AREA (ft^2) <br /> <br />Woodley Plan 2X, Retreat (maximum normal window UG) <br /> <br />EWNR <br /> <br />COMMENTS <br /> <br />lO^(-EWNR/lO) <br /> <br />35.0 <br />10.0 <br />412.9 <br />329.9 <br /> <br />787.8 <br />o <br /> <br />Calculated Noise Reduction: <br />SAFETY MARGIN: <br /> <br />TOTAL NOISE REDUCTION: <br /> <br />32 <br />35 <br />40 <br />45 <br /> <br />UG <br />UG (+3 for orientation) <br />stud/stucco I gyp I insulation <br />withAVB <br /> <br />0.02208 <br />0.00316 <br />0.04129 <br />0.01043 <br /> <br />worst case exposure, above wall <br />noise standard <br /> <br />CASE 7 : <br />(added 9-2005) <br />BUILDING ELEMENT <br /> <br />Window (operable) <br />Shileded Window (operable) <br />w,n <br />Roof I Ceiling (top floor) <br /> <br />TOTAL AREA (ft^2) <br />10 LogS/A <br /> <br />0.07697 <br /> <br />non-comer <br /> <br />34.1 <br />2.0 dB <br /> <br />32.1 <br /> <br />FAILS BY: <br /> <br />6.5 dB <br /> <br />EXTERIOR NOISE LEVEL: <br />lNTERIOR STANDARD : <br />REDUCTION REQUIRED : <br /> <br />83.6 <br />45.0 <br />38.6 <br /> <br />AREA (ft^2) <br /> <br />Woodley Plan 2X, Retreat (Required Window Upgrade) <br /> <br />35.0 <br />10.0 <br />412.9 <br />329.9 <br /> <br />787.8 <br />o <br /> <br />Calculated Noise Reduction: <br />SAFETY MARGIN: <br /> <br />TOTAL NOISE REDUCTION: <br /> <br />CASE 7 : <br />(added 9.2005) <br />BUILDING ELEMEI\'T <br /> <br />Window (operable) <br />Shileded Window (operable) <br />W,," <br />Roof I Ceiling (top floor) <br /> <br />TOTAL AREA (ft^2) <br />10 Log SIA <br /> <br />worst case exposure, above wall <br />noise standard <br /> <br />EWNR COMMENTS lO^(-EWNRJlO) <br />45 UG 0.00111 <br />48 UG(+3farorientation) 0.00016 <br />49 UG 0.00520 <br />45 withAVB 0.01043 <br /> 0.01690 <br />non-corner <br />40.7 NEEDS <br />2.0 dB AVB <br /> AND WALL UG TO EWNR=49 <br />38.7 PASSES BY: 0.1 dB AND WINDOW UG TO EWNR=45 <br /> EXTERIOR NOISE LEVEL: 83.6 worst case exposure, above wall <br /> INTERIOR STANDARD : 45.0 noise standard <br /> REDUCTION REQUIRED: 38.6 <br /> <br />AREA (ft^2) <br /> <br />Woodley Plan 2X, Retreat (windows removed) <br /> <br />EWNR <br /> <br />COMMENTS <br /> <br />IO^(-EWNRI10) <br /> <br />0.0 <br />0.0 <br />457.9 <br />329.9 <br /> <br />787.8 <br />o <br /> <br />Calculated Noise Reduction: <br />SAFETY MARGIN: <br /> <br />EWNR calx IT 16187 <br /> <br />TOTAL NOISE REDUCTION: <br /> <br />36 <br />39 <br />49 <br />45 <br /> <br />OMIT <br />OMIT <br />UG <br />withAVB <br /> <br />0.00576 <br />0.01043 <br /> <br />would need to omit all windows <br />and upgrade walls <br />to EWNR=49 <br /> <br />0.01620 <br /> <br />non-corner <br /> <br />40.9 <br />2.0 dB <br /> <br />38.9 <br /> <br />PASSES BY: <br /> <br />0.3 dB <br /> <br />Page 1 of 1 <br /> <br />75Cr-32 <br />