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PUD 06-14A; ROBERTSON RANCH PA 18; FINAL NOISE ANALYSIS; 2007-12-04
~ URBAN CROSSROADS 5411 Avenida Encinas, Suite 100 Carlsbad, CA 92008 Prepared by: Jeremy Louden Bill Lawson, INCE Saphire Lim Allison Stalker Prepared for: Mr. Don Mitchell MCMILLIN LAND DEVELOPMENT 2750 Womble Road San Diego, CA 921 06 ROBERTSON RANCH PLANNING AREA 18 FINAL NOISE ANALYSIS CITY OF CARLSBAD, CALIFORNIA December 4, 2007 JN:05400-03 JL:BL:AS:dl TABLE OF CONTENTS SECTION PAGE 1.0 EXECUTIVE SUMMARY.................................................................................. 1·1 1.1 Exterior Noise Mitigation.......................................................................... 1·1 1.2 Interior Noise Mitigation .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 1·1 2.0 INTRODUCTION............................................................................................... 2·1 3.0 NOISE FUNDAMENTALS................................................................................. 3·1 3.1 Noise Descriptors .. .. .. .. . .. .. . . .. . .. .. .. .. .. .. . .. . .. .. .. .. .... .. .. .. . .. .. .. . .. .. .. .. . .. .. .. .. . .. .. .. 3·1 3.2 Traffic Noise Prediction........................................................................... 3-1 3.3 Noise Control.......................................................................................... 3-2 3.4 Ground Absorption.................................................................................. 3-2 3.5 Noise Barrier Attenuation........................................................................ 3-3 4.0 NOISE STANDARDS . .. .. .. . .. .. .. . .. .. .. .. .. . .. .. .. .. .. . .. .. .. .... . .. .. .. .. .... . .. .. . .. .. .. .. .. . .. .. .. .. .. 4-1 4.1 Transportation Noise Standards .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. 4-1 4.2 Stationary Noise Standards.................................................................... 4-1 5.0 EXTERIOR NOISE ANALYSIS......................................................................... 5-1 6.0 INTERIOR NOISE ANALYSIS.......................................................................... 6-1 6.1 Interior Noise Reduction Methodology .. .. .. .. .. .. .. .. .. .... .. .. .... .. .. .. .. .. .... .. .. .. . 6-1 6.2 Calculated Interior Noise Reductions..................................................... 6-2 6.3 Interior Noise Level Assessment............................................................ 6-2 APPENDICES INTERIOR NOISE REDUCTION CALCULATIONS................................................ A LIST OF EXHIBITS EXHIBIT PAGE 2-A LOCATION MAP................................................................................................ 2-2 2-B SITE PLAN . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 LIST OF TABLES TABLE PAGE 6-1 INTERIOR NOISE REDUCTION CALCULATION (dBA CNEL).................. 6-3 6-2 FIRST FLOOR INTERIOR NOISE IMPACTS (dBA CNEL) ........................ 6-4 6-3 SECOND FLOOR INTERIOR NOISE IMPACTS (dBA CNEL).................. .. 6-5 ROBERTSON RANCH PLANNING AREA 18 FINAL NOISE ANALYSIS CITY OF CARLSBAD, CALIFORNIA 1.0 EXECUTIVE SUMMARY A final noise analysis has been completed to determine the noise exposure and the necessary noise mitigation measures for Planning Area 18 of the proposed Robertson Ranch Development. The proposed Robertson Ranch Planning Area 18 Residential Development includes approximately 11 0 single-family dwelling units and is generally located along the proposed alignment of Cannon Road and College Boulevard in the City of Carlsbad. It is expected that the primary source of noise impacts to the project site will be traffic noise from the proposed alignment of Cannon Road and College Boulevard. Based on the future traffic projections along these roadways, the proposed adjacent residential units of Planning Area 18 will experience worst-case exterior noise levels as high as 60.2 and 70.3 dBA CNEL at first and second building facades, respectively (Source: Robertson Ranch Planning Areas 17, 18 and 21 Revised Supplemental Noise Letter-Urban Crossroads, Inc. dated August 14, 2007). To reduce exterior traffic noise impacts and to meet the City of Carlsbad interior noise standard of 45 dBA CNEL, the project should provide the noise mitigation measures listed below: 1 . 1 Exterior Noise Mitigation • Based on the previously mentioned preliminary noise study, no mitigation is required in addition to the proposed barriers blocking line of sight to College Boulevard and Cannon Road. 1.2 Interior Noise Mitigation • Provide upgraded windows with a minimum Sound Transmission Class (STC) rating 26 for units 208-212, 242-245, 247, 283, 285, 286, 288-292, 294-299 and 301-304 in Planning Area 18. 1-1 • All window and door assemblies used throughout the project shall be free of cut outs and openings and shall be well fitted and well weather-stripped. • Provide a windows closed condition requiring a means of mechanical ventilation for all units to meet the City and/or Uniform Building Code (UBC) requirements stating that in lieu of exterior openings for natural ventilation, a mechanical ventilating system may be provided (i.e., air conditioning). Such a system shall be capable of providing two air changes per hour with minimum outside fresh air requirements. • Provide exterior walls with a minimum Sound Transmission Class (STC) rating of 46. Typical walls with this rating will have 2x4 studs or greater, 16" o.c. with R-13 insulation, a minimum 7/8" exterior surface of cement plaster and a minimum interior surface of 1/2" gypsum board. • Provide roof I ceiling system utilizing minimum 1/2" plywood sheathing that is well sealed to form a continuous barrier with minimum R-19 batt insulation in the joist cavities. No additional interior noise mitigation is required to meet the City of Carlsbad 60 dBA CNEL exterior and 45 dBA CNEL interior noise standards. With the recommended noise mitigation measures provided in this study, the proposed residential project will meet the City of Carlsbad noise standards for residential development. 1-2 2.0 INTRODUCTION This report presents the results of a final noise study for Planning Area 18 of the Robertson Ranch Residential Development. This final noise study outlines the project, provides basic information regarding the fundamentals of traffic noise, describes local noise guidelines, provides the study methods and procedures for traffic noise analysis, and evaluates the future exterior and interior noise environments. The proposed project is located along the proposed alignment of Cannon Road and College Boulevard in the City of Carlsbad as shown on the Location Map, Exhibit 2-A. The proposed Robertson Ranch Planning Area 18 Residential Development will be developed with approximately 110 single-family dwelling units as shown on Exhibit 2-B. The recommendations for control of the noise impacts for exterior and interior areas were designed to satisfy the City of Carlsbad noise standards. 2-1 Toll<! ~ c~,tli Ct L"j1>Cl'l C\ Mili011 Rd ·-· .$ 1 I RonC:h9 Carlsbad Goi!Course EXHIBIT 2-A LOCATION MAP N ROBERTSON RANCH (PLANNING AREA 18) PRELIMINARY NOISE STUDY, Ca;::.::rl.:c:s-=.b.::.ad::!,_C:::.::a::.:::lif.:...:o::_:_m::.:::i-=.a_-=054::....:..::0=0:c.::2::_:_A.::c.d::..:w~g..__ _______ _:~::::R:::::_H::::Jio:::R~:::A::::~::.s 2-2 EXHIBIT 2-B SITE PLAN N I (,.) ROBERTSON RANCH {PLANNING AREA 18) PRELIMINARY NOISE STUDY, Carlsbad, California-05400: 2B.dwg 3.0 NOISE FUNDAMENTALS Noise has been simply defined as "unwanted sound". Sound becomes unwanted when it interferes with normal activities, when it causes actual physical harm or when it has adverse effects on health. Noise is measured on a logarithmic scale of sound pressure level known as a decibel (dB). A-weighted decibels (dBA) approximate the subjective response of the human ear to broad frequency noise sources by discriminating against very low and very high frequencies of the audible spectrum. They are adjusted to reflect only those frequencies which are audible to the human ear. 3.1 Noise Descriptors Equivalent sound levels are not measured directly but are calculated from sound pressure levels typically measured in A-weighted decibels (dBA). The equivalent sound level (Leq) represents a steady state sound level containing the same total energy as a time varying signal over a given sample period. The peak hour Leq is the noise metric used by Caltrans for all traffic noise impact analyses. The Community Noise Equivalent Level (CNEL) is the weighted average of the intensity of a sound, with corrections for time of day, and averaged over 24 hours. The time of day corrections require the addition of 5 decibels to sound levels in the evening hours between 7 p.m. and 10 p.m. and the addition of 10 decibels to sound levels at night between 10 p.m. and 7 a.m. These additions are made to account for the noise sensitive time periods during night hours when sound appears louder. CNEL values do not represent the actual sound level heard at any particular time, but rather represents the total sound exposure. The City of Carlsbad relies on the CNEL noise standard to assess transportation related impacts on noise sensitive land uses. 3.2 Traffic Noise Prediction The level of traffic noise depends on three primary factors: (1) the volume of the traffic, (2) the speed of the traffic and (3) the number of trucks in the flow of 3-1 traffic. Generally, the loudness of traffic noise is increased by heavier traffic volumes, higher speeds and a greater number of trucks. Vehicle noise is a combination of the noise produced by the engine, exhaust and tires. Because of the logarithmic nature of traffic noise levels, a doubling of the traffic noise (acoustic energy) results in a noise level increase of 3 dBA. Based on the FHWA community noise assessment criteria, this change is "barely perceptible". In other words, doubling the traffic volume (assuming that the speed and truck mix do not change) results in a noise increase of 3 dBA. The truck mix on a given roadway also has a significant effect on community noise levels. As the number of heavy trucks increases and becomes a larger percentage of the vehicle mix, adjacent noise levels increase. 3.3 Noise Control Noise control is the process of obtaining an acceptable noise environment for a particular observation point or receiver by controlling the noise source, transmission path, receiver or all three. This concept is known as the source- path-receiver concept. In general, noise control measures can be applied to any and all of these three elements. 3.4 Ground Absorption To account for the ground-effect attenuation (absorption), two types of site conditions are commonly used in traffic noise models, soft site and hard site conditions. Soft site conditions account for the sound propagation loss over natural surfaces such as normal earth and ground vegetation. A drop-off rate of 4.5 dBA per doubling of distance is typically observed over soft ground with landscaping. On the other hand, a 3.0 dBA drop-off rate is observed for hard site conditions, such as asphalt, concrete, stone and very hard packed earth. In order to predict a worse-case analysis, hard site conditions were utilized. 3-2 3.5 Noise Barrier Attenuation Effective noise barriers can reduce noise levels by 10 to 15 decibels, cutting the loudness of traffic noise in half. Noise barriers are most effective when placed close to the noise source or receiver. However, noise barriers do have limitations. For a noise barrier to work, it must be high enough and long enough to block the view of a road. Noise barriers do little good for homes on a hillside overlooking a road or for buildings which rise above the barrier. A noise barrier can achieve a 5 decibels noise level reduction when it is tall enough to break the line-of-sight. 3-3 4.0 NOISE STANDARDS The City of Carlsbad has identified two separate types of noise sources: (1) mobile, and (2) stationary. To control mobile or transportation related noise sources such as freeways, airport and railroads, the City of Carlsbad has established guidelines for acceptable community noise levels in the Noise Element of the General Plan. The most effective method to control community noise impacts from non-transportation noise sources (such as speakerphones, trash compactors, air conditioning units, etc.) is through the application of a community noise ordinance 4.1 Transportation Noise Standards For noise sensitive residential uses, the City Noise Element requires an exterior noise level of less than 60 dBA CNEL for outdoor living areas and an interior noise level of less than 45 dBA CNEL. In the context of this noise analysis, the noise impacts associated with the project are controlled by the City Noise Element. 4.2 Stationary Noise Standards The most effective method to control community noise impacts from non- transportation noise sources (such as trash compactors, air-conditioning units, etc.) is through the application of a community noise ordinance. For the purpose of this analysis, the noise impacts associated with the Robertson Ranch Planning Area 15 Residential Development project are controlled by the City of Carlsbad Noise Element. 4-1 5.0 EXTERIOR NOISE ANALYSIS It is expected that the primary source of noise impacts to the project site will be traffic noise from the proposed alignment of Cannon Road and College Boulevard. Based on the future traffic projections along these roadways, the proposed adjacent residential units of Planning Area 18 will experience worst-case unmitigated exterior noise levels as high as 60.2 and 70.3 dBA CNEL at first and second building facades, respectively (Source: Robertson Ranch Planning Areas 17, 18 and 21 Revised Supplemental Noise Letter- Urban Crossroads, Inc. dated August 14, 2007). The floor plans used for this analysis were provided by Dahlin Group Architecture Planning received November 19, 2007. 5-1 6.0 INTERIOR NOISE ANALYSIS The interior noise level is the difference between the predicted exterior noise level at the building facade and the noise reduction of the structure. Typical building construction will provide a noise reduction of approximately 12 dBA with "windows open" and 20 dBA noise reduction with "windows closed". Several methods are used to improve interior noise reduction, including: (1) weather-stripped solid core exterior doors; (2) upgraded dual glazed windows; (3) mechanical ventilation/air conditioning and (4) exterior wall/roof assemblies free of cut-outs or openings. New construction will generally produce a "windows closed" noise reduction ranging from 25 dBA to 30 dBA. However, sound leaks, cracks and openings within the window assembly can greatly diminish its effectiveness in reducing noise. 6.1 Interior Noise Reduction Methodology The noise reduction characteristics of a building are determined by combining the transmission loss of each of the building components that make up the building. Each unique component has a transmission loss value. For residential homes, the critical building components include the roof, walls, windows, doors, attic configuration and insulation characteristics. The total noise reduction is dependent upon the transmission loss of each element and the surface area of that element in relation to the total surface area of the room. To account for the acoustic energy absorbed within a room, the absorption coefficients for individual surface areas such as drywall and carpet are used to calculate the interior room effects. The calculated building noise reduction includes both the transmission loss associated with the exterior wall assembly and the room absorption characteristics. 6-1 6.2 Calculated Interior Noise Reductions Noise reduction calculations based on architectural floor plans were used to estimate the "windows closed" interior noise levels for all floor plans within the project site. The calculations assumed building construction that includes upgraded dual glazed windows with a minimum Sound Transmission Class Rating (STC) of 26 for units 208-212, 242-245, 247, 283, 285, 286, 288-292, 294- 299 and 301-304 in Planning Area 18. As shown on Table 6-1, with standard windows the interior noise reduction will range from 26.2 to 33.1 dBA. The interior noise reduction calculations with upgraded windows are included in Appendix "A". 6.3 Interior Noise Level Assessment Tables 6-2 and 6-3 present the future first and second floor interior noise level. The exterior noise level at the building facade of Planning Area 18 was found to be 60.2 dBA CNEL for first floor and 70.3 dBA CNEL for second floor. The calculations show that the "windows open" condition will not provide adequate interior noise mitigation. To meet the 45 dBA CNEL interior noise standard, interior noise level reductions of 15.2 and 25.3 dBA CNEL are required for all first floor and second floor units, respectively, in Planning Area 18 of the proposed Robertson Ranch Residential Development. The noise levels shown in Tables 6-2 and 6-3 show that with a "windows closed" condition, requiring a means of mechanical ventilation for all units and upgraded windows with a STC rating of 26 for units 208-212, 242-245, 247, 283, 285, 286, 288-292, 294-299 and 301-304 in Planning Area 18, the future interior noise levels will be below the City of Carlsbad 45 dBA CNEL interior noise level standard. 6-2 TABLE 6-1 INTERIOR NOISE REDUCTION CALCULATIONS (dBA CNEL) NOISE REDUCTION WITH STANDARD WINDOWS PLAN ROOM FLOOR (dBA CNEL) Great Room 1st 30.4 Dining Room 1st 26.2 1 & 1X Master Bedroom 1st 29.6 Bedroom 2 1st 32.0 Bedroom 3 1st 30.0 Bedroom 41 2nd 33.1 Great Room 1st 28.9 Morning Room 1st 30.0 Bedroom 4 1st 30.8 2 Master Bedroom 2nd 30.4 Bedroom 2 2nd 30.2 Bedroom 3 2nd 32.6 Bonus Room 2nd 29.2 Great Room 1st 28.3 Dining Room 1st 28.8 Bedroom 4 1st 29.9 3 Master Bedroom 2nd 29.7 Bedroom 2 2nd 30.7 Bedroom 3 2nd 31.1 Bonus Room 2nd 31.1 1 Only included in Plan 1X T:\Carlsbad _Jobs\_ 05400\_ 05400\Excel\[05400-02 Tables.xls )T6-1 6-3 TABLE 6-2 FIRST FLOOR INTERIOR NOISE IMPACTS (dBA CNEL) NOISE INTERIOR NOISE LEVEL FOR REQUIRED CALCULATED FLOOR IMPACTS AT WINDOWS INTERIOR NOISE INTERIOR NOISE PLAN ROOM FAC_ADE OPEN1 CLOSED2 REDUCTION REDUCTION3 Great Room 60.2 48.2 29.8 15.2 30.4 Dining Room 60.2 48.2 34.0 15.2 26.2 1 & 1X Master Bedroom 60.2 48.2 30.6 15.2 29.6 Bedroom 2 60.2 48.2 28.2 15.2 32.0 Bedroom 3 60.2 48.2 30.2 15.2 30.0 Great Room 60.2 48.2 31.3 15.2 28.9 2 Morning Room 60.2 48.2 30.2 15.2 30.0 Bedroom4· 60.2 48.2 29.4 15.2 30.8 Great Room 60.2 48.2 31.9 15.2 28.3 3 Dining Room 60.2 48.2 31.4 15.2 28.8 Bedroom 4 60.2 48.2 30.3 15.2 29.9 1 A minimum of 12 dBA noise reduction is assumed with a windows open condition 2 With the calculated interior noise reduction with a windows closed condition and standard windows presented in Table 6-1 3 Includes standard windows with a minimum sound transmission class (STC) rating of 26. T :\Carlsbad_ Jobs\_ 05400\_ 05400\Excel\[05400-02 Tables.xls]T6-2 6-4 TABLE 6-3 SECOND FLOOR INTERIOR NOISE IMPACTS (dBA CNEL) NOISE INTERIOR NOISE LEVEL FOR REQUIRED CALCULATED FLOOR IMPACTS AT WINDOWS INTERIOR NOISE INTERIOR NOISE PLAN ROOM FACADE OPEN1 CLOSED2 REDUCTION REDUCTION3 1X Bedroom 4 70.3 58.3 37.2 25.3 33.1 Master Bedroom 70.3 58.3 39.9 25.3 30.4 2 Bedroom 2 70.3 58.3 40.1 25.3 30.2 Bedroom 3 70.3 58.3 37.7 25.3 32.6 Bonus Room 70.3 58.3 41.1 25.3 29.2 Master Bedroom 70.3 58.3 40.6 25.3 29.7 3 Bedroom 2 70.3 58.3 39.6 25.3 30.7 Bedroom 3 70.3 58.3 39.2 25.3 31.1 Bonus Room 70.3 58.3 39.2 25.3 31.1 1 A minimum of 12 dBA noise reduction is assumed with a windows open condition 2 With the calculated interior noise reduction with a windows closed condition and standard windows presented in Table 6-1 3 Includes standard windows with a minimum sound transmission class (STC) rating of 26. T :\Carlsbad_ Jobs\_ 05400\_ 05400\Excel\[05400-02 Tables.xls]T6-3 6-5 The calculated interior noise reduction requires that exterior walls have a minimum Sound Transmission Class (STC) rating of 46. Typical walls with this rating will have 2x4 studs or greater, 16" o.c. with R-13 insulation, a minimum 7/8" exterior surface of cement plaster and a minimum interior surface of 1/2" gypsum board. Interior wall finish shall be at least 1/2" thick gypsum wallboard or plaster. Ceilings shall be finished with gypsum board or plaster that is at least 1 /2" thick. The roof system should have minimum 1/2" plywood sheathing which is well sealed to form a continuous traffic noise barrier with a minimum insulation of R-19 for all attic spaces. In addition, provide a windows closed condition requiring a means of mechanical ventilation for all units to meet the City and/or Uniform Building Code (USC) requirements stating that in lieu of exterior openings for natural ventilation, a mechanical ventilating system may be provided (i.e., air conditioning). Such a system shall be capable of providing two air changes per hour with minimum outside fresh air requirements. 6-6 APPENDIX A INTERIOR NOISE REDUCTION CALCULATIONS INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 1 & 1X, 1st Floor Room: Great Room (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC Stucco David Harris p. 371 143.8 46 Dual-Glazed Windows ABC Window Co. 63.3 26 Fixed Window ABC Window Co. 0.0 26 Totals 207 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Floor-Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals Source David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 Area NRC 322.0 0.30 0.0 0.05 322.0 0.50 405.0 0.50 1049 125 27 21 17 21 17 125 0.15 0.02 0.03 0.10 0.08 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 25 32 37 25 32 37 0.12 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.2868 38 0.5024 38 0.0000 0.0000 0.0038 24.19 4000 125 0.30 48.30 0.02 0.00 0.03 32.20 0.03 40.50 121 -2.33 15.86 16.10 31.96 31.83 Job Number: 5400 Analyst: A. Stalker Fractional Area S/(10A(TU10)) dB 0.0057 0.0036 0.0018 0.0018 1.2620 0.2000 0.0399 0.0126 0.0126 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0061 0.0010 0.0002 0.0001 0.0001 22.12 30.03 36.77 41.57 41.57 37.64 54.74 38.64 167.44 0.00 0.00 0.00 0.00 0.00 25.76 16.10 9.66 9.66 9.66 32.40 20.25 12.15 12.15 12.15 112.9 74.99 124.85 189.25 118.41 181.47 -2.63 -4.41 -2.20 -0.39 -2.43 -0.57 13.49 19.62 28.58 35.18 33.14 8.60 3.20 0.00 -1.20 -1.00 22.09 22.82 28.58 33.98 32.14 21.96 22.69 28.45 33.85 32.02 30.4 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 1 & 1 X, 1st Floor Room· Dinin Room • (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 141.5 46 27 Dual-Glazed Windows ABC Window Co. 83.5 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 225 Composite Exterior Wall Sound Transmission Loss 10*LOG(11t) (2) Room Effects (Absorption) Room Surface I Material Source Area NRC 125 Floor-Carpet David Harris p. 347 150.0 0.30 0.15 0.17 Floor -Vinyl David Harris p. 347 0.0 0.05 0.02 0.03 Ceiling -Drywall David Harris p. 348 150.0 0.50 0.10 0.08 Walls -Drywall David Harris p. 348 225.0 0.50 0.10 0.08 Totals 525 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 25 32 37 25 32 37 0.32 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.2823 38 0.6633 1.6660 0.2641 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0042 0.0074 0.0012 23.76 21.28 29.21 4000 125 0.30 22.50 0.02 0.00 0.00 0.00 0.03 15.00 12.00 7.50 0.03 22.50 18.00 11.25 60 55.5 36.75 -5.74 -6.08 -7.87 12.02 9.20 15.34 16.10 8.60 3.20 28.12 17.80 18.54 28.00 17.68 18.42 Job Number: 5400 Analyst: A. Stalker 0.0036 0.0018 0.0527 0.0167 0.0167 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0002 0.0001 0.0001 36.02 40.86 40.86 78.00 45.00 0.00 0.00 0.00 4.50 4.50 4.50 6.75 6.75 6.75 59.25 89.25 56.25 -5.79 -4.02 -6.02 24.23 30.85 28.84 0.00 -1.20 -1.00 24.23 29.65 27.84 24.10 29.52 27.72 dB 36.93 81.48 -4.41 26.2 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 1 & 1X, 1st Floor Room: Master Bedroom (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC Stucco David Harris p. 371 212.0 46 Dual-Glazed Windows ABC Window Co. 49.0 26 Fixed Window ABC Window Co. 0.0 26 Totals 261 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Floor -Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals Source David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 Area NRC 210.0 0.30 0.0 0.05 210.0 0.50 522.0 0.50 942 125 27 42 21 17 21 17 125 0.15 0.17 0.02 0.03 0.10 0.08 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 49 25 32 37 25 32 37 0.32 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.4230 0.0084 38 0.3892 0.9777 0.1550 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0031 0.0038 0.0006 25.07 24.21 32.03 4000 125 0.30 31.50 35.70 25.20 0.02 0.00 0.00 0.00 0.03 21.00 16.80 10.50 0.03 52.20 41.76 26.10 104.7 94.26 61.8 -3.97 -4.42 -6.26 15.10 13.78 19.78 16.10 8.60 3.20 31.20 22.38 22.98 31.08 22.26 22.85 Job Number: 5400 Analyst: A. Stalker 0.0053 0.0027 0.0027 0.0309 0.0098 0.0098 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 38.57 43.22 43.22 67.20 109.20 63.00 0.00 0.00 0.00 6.30 6.30 6.30 15.66 15.66 15.66 dB 39.32 89.16 131.16 84.96 123.39 -4.66 -2.99 -4.87 -3.25 27.91 34.23 32.34 0.00 -1.20 -1.00 27.91 33.03 31.34 27.78 32.90 31.22 29.6 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 1 & 1 X, 1st Floor Room: Bedroom 2 (1) Transmission Loss Calculations (Exterior Wall) Wall Exterior Wall Assembly · Source Area STC Stucco David Harris p. 371 Dual-Glazed Windows ABC Window Co. Fixed Window ABC Window Co. 83.0 25.0 0.0 Totals 108 46 26 26 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Floor -Carpet Floor-Vinyl Ceiling -Drywall Walls -Drywall Totals Source David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 Area NRC 168.0 0.30 0.0 0.05 168.0 0.50 468.0 0.50 804 125 27 21 21 125 0.15 0.02 0.10 0.10 42 17 17 0.17 0.03 0.08 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 25 25 0.12 0.05 0.05 0.05 32 32 0.32 0.03 0.03 0.03 49 37 37 0.52 0.03 0.03 0.03 4000 125 54 0.1656 0.0052 0.0033 38 0.1986 0.4988 0.0791 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0034 0.0047 0.0008 24.72 23.31 31.18 4000 125 0.30 25.20 28.56 20.16 0.02 0.00 0.00 0.00 0.03 16.80 13.44 8.40 0.03 46.80 37.44 23.40 88.8 79.44 51.96 -0.85 -1.33 -3.18 17.87 15.98 22.00 16.10 8.60 3.20 33.97 24.58 25.20 33.85 24.45 25.07 Job Number: 5400 Analyst: A. Stalker 0.0021 0.0010 0.0010 0.0158 0.0050 0.0050 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0002 0.0001 0.0001 37.82 42.53 42.53 53.76 87.36 50.40 0.00 0.00 0.00 5.04 5.04 5.04 14.04 14.04 14.04 72.84 106.44 69.48 -1.71 -0.06 -1.92 30.11 36.47 34.61 0.00 -1.20 -1.00 30.11 35.27 33.61 29.98 35.14 33.49 dB 38.62 98.74 -0.39 32.0 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 1 & 1 X, 1st Floor Room: Bedroom 3 (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC Stucco David Harris p. 371 210.0 46 Dual-Glazed Windows ABC Window Co. 33.0 26 Fixed Window ABC Window Co. 0.0 26 Totals 243 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Floor-Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals Source David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 Area NRC 168.0 0.30 0.0 0.05 168.0 0.50 468.0 0.50 804 125 27 42 21 17 21 17 125 0.15 0.17 0.02 0.03 0.10 0.08 0.10 0.08 Room Effect 1 O*log (Room Absorption in Sabins )/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 49 25 32 37 25 32 37 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.4190 0.0133 0.0084 38 0.2621 0.6584 0.1044 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0028 0.0028 0.0005 25.52 25.58 33.34 4000 125 0.30 25.20 28.56 20.16 0.02 0.00 0.00 0.00 0.03 16.80 13.44 8.40 0.03 46.80 37.44 23.40 88.8 79.44 51.96 -4.37 -4.86 -6.70 15.15 14.73 20.64 16.10 8.60 3.20 31.25 23.33 23.84 31.13 23.20 23.71 Job Number: 5400 Analyst: A. Stalker 0.0053 0.0026 0.0026 0.0208 0.0066 0.0066 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 39.69 44.20 44.20 53.76 87.36 50.40 0.00 0.00 0.00 5.04 5.04 5.04 14.04 14.04 14.04 72.84 106.44 69.48 -5.23 -3.59 -5.44 28.46 34.62 32.77 0.00 -1.20 -1.00 28.46 33.42 31.77 28.33 33.29 31.64 dB 40.34 98.74 -3.91 30.0 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 1X, 2nd Floor Room: Bedroom 4 (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 94.3 46 27 Dual-Glazed Windows ABC Window Co. 13.8 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 108 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Source Area NRC 125 Floor-Carpet David Harris p. 347 144.0 0.30 0.15 0.17 Floor-Vinyl David Harris p. 347 0.0 0.05 0.02 0.03 Ceiling -Drywall David Harris p. 348 144.0 0.50 0.10 0.08 Walls -Drywall David Harris p. 348 432.0 0.50 0.10 0.08 Totals 720 Room Effect 1 O*log (Room Absorption in Sabins )/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 49 25 32 37 25 32 37 0.12 0.32 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.1881 0.0059 0.0038 38 0.1092 0.2743 0.0435 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0028 0.0026 0.0004 25.60 25.86 33.59 4000 125 0.30 21.60 24.48 17.28 0.02 0.00 0.00 0.00 0.03 14.40 11.52 7.20 0.03 43.20 34.56 21.60 79.2 70.56 46.08 -1.35 -1.85 -3.70 18.26 18.01 23.89 16.10 8.60 3.20 34.36 26.61 27.09 34.23 26.48 26.97 Job Number: 5400 Analyst: A. Stalker 0.0024 0.0012 0.0087 0.0027 0.0027 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 39.90 44.39 44.39. 46.08 74.88 0.00 0.00 0.00 4.32 4.32 4.32 12.96 12.96 12.96 63.36 92.16 60.48 -2.32 -0.69 -2.52 31.59 37.70 35.87 0.00 -1.20 -1.00 31.59 36.50 34.87 31.46 36.38 34.75 dB 40.53 84.63 -1.06 33.1 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 2, 1st Floor Room: Great Room (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 271.8 46 27 Dual-Glazed Windows ABC Window Co. 108.5 26 21 17 Fixed Window ABC Window Co. 20.3 26 21 17 Totals 400.5 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) 44 46 25 32 25 32 4000 49 54 37 38 37 38 Absorption Coefficients by Frequency (Hz) Room Surface I 125 I 250 I 500 11000 I 2000 I 4000 Material Source Area NRC Floor -Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 477.0 0.0 477.0 400.5 1354.5 0.30 0.15 0.17 0.05 0.02 0.03 0.50 0.10 0.08 0.50 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 0.12 0.32 0.52 0.30 0.05 0.03 0.03 0.02 0.05 0.03 0.03 0.03 0.05 0.03 0.03 0.03 125 0.5422 0.0171 0.8618 2.1649 0.1609 0.4040 0.0000 0.0000 0.0039 0.0065 24.08 21.90 125 I 250 71.55 81.09 0.00 0.00 47.70 38.16 40.05 32.04 159.3 151.29 -4.00 -4.23 14.08 11.67 16.10 8.60 30.18 20.27 30.05 20.15 0.0108 0.3431 0.0640 0.0000 0.0010 29.81 Job Number: 5400 Analyst: A. Stalker 0.0068 0.0034 0.0034 0.0685 0.0216 0.0216 0.0128 0.0040 0.0040 0.0000 0.0000 0.0000 0.0002 0.0001 0.0001 36.58 41.39 41.39 Absorption (Sabins) I 500 11000 12000 I 4000 I 57.24 152.64 248.04 143.10 0.00 0.00 0.00 0.00 23.85 14.31 14.31 14.31 20.03 12.02 12.02 12.02 dB 37.46 101.12 178.97 274.37 169.43 266.58 -5.98 -3.50 -1.64 -3.74 -1.77 17.84 27.08 33.74 31.65 3.20 0.00 -1.20 -1.00 21.04 27.08 32.54 30.65 20.91 26.95 32.42 30.52 28.9 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 2, 1st Floor Room: Morning Room (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 245.5 46 27 Dual-Glazed Windows ABC Window Co. 51.5 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 297 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) 44 46 25 32 25 32 4000 49 54 37 38 37 38 Absorption Coefficients by Frequency (Hz) Room Surface I 125 I 250 l 500 11000 I 2000 I 4000 Material Source Area NRC Floor-Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 252.0 0.0 252.0 594.0 1098 0.30 0.15 0.17 0.05 0.02 0.03 0.50 0.10 0.08 0.50 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 0.12 0.32 0.52 0.30 0.05 0.03 0.03 0.02 0.05 0.03 0.03 0.03 0.05 0.03 0.03 0.03 125 0.4898 0.0155 0.4091 1.0276 0.0000 0.0000 0.0000 0.0000 0.0030 0.0035 25.19 24.54 125 I 250 37.80 42.84 0.00 0.00 25.20 20.16 59.40 47.52 122.4 110.52 -3.85 -4.29 15.34 14.25 16.10 8.60 31.44 22.85 31.32 22.73 0.0098 0.1629 0.0000 0.0000 0.0006 32.36 Job Number: 5400 Analyst: A. Stalker 0.0031 0.0325 0.0103 0.0103 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 38.85 43.47 43.47 Absorption (Sabins) I 500 11000 I 2000 I 4000 I 30.24 80.64 131.04 75.60 0.00 0.00 0.00 0.00 12.60 7.56 7.56 7.56 29.70 17.82 17.82 17.82 72.54 106.02 156.42 100.98 -6.12 -4.47 -2.78 -4.69 20.23 28.38 34.68 32.78 3.20 0.00 -1.20 -1.00 23.43 28.38 33.48 31.78 23.31 28.26 33.36 31.66 dB 39.58 148.64 -3.01 30.0 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 2, 1st Floor Room: Bedroom 4 (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 215.5 46 27 42 Dual-Glazed Windows ABC Window Co. 27.5 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 243 Composite Exterior Wall Sound Transmission Loss 1 O*LOG( 1/t) (2) Room Effects (Absorption) 44 25 32 25 32 4000 49 54 37 38 37 38 Absorption Coefficients by Frequency (Hz) Room Surface I 125 I 250 I 500 11000 I 2000 I 4000 Material Source Area NRC Floor-Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 182.3 0.0 182.3 486.0 850.5 0.30 0.15 0.17 0.05 0.02 0.03 0.50 0.10 0.08 0.50 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(ExteriorWall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 0.12 0.32 0.52 0.30 0.05 0.03 0.03 0.02 0.05 0.03 0.03 0.03 0.05 0.03 0.03 0.03 125 0.4300 0.2184 0.5487 0.0000 0.0000 0.0000 0.0000 0.0027 0.0023 25.74 26.36 125 I 250 27.34 30.98 0.00 0.00 18.23 14.58 48.60 38.88 94.163 84.443 -4.12 -4.59 15.62 15.77 16.10 8.60 31.72 24.37 31.60 24.24 0.0870 0.0000 0.0000 0.0004 34.05 Job Number: 5400 Analyst: A. Stalker 0.0054 0.0027 0.0027 0.0174 0.0055 0.0055 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 40.28 44.72 44.72 Absorption (Sabins) I 500 11000 I 2000 I 4000 I 21.87 58.32 94.77 54.68 0.00 0.00 0.00 0.00 9.11 5.47 5.47 5.47 24.30 14.58 14.58 14.58 dB 40.87 55.283 78.368 114.82 74.723 107.08 -6.43 -4.91 -3.26 -5.12 -3.56 21.62 29.37 35.46 33.60 3.20 0.00 -1.20 -1.00 24.82 29.37 34.26 32.60 24.70 29.24 34.14 32.47 30.8 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 2, 2nd Floor Room: Master Bedroom (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 248.0 46 27 Dual-Glazed Windows ABC Window Co. 49.0 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 297 Composite Exterior Wall Sound Transmission Loss 1 O*LOG( 1 /t) (2) Room Effects (Absorption) Room Surface I Material Source Area NRC 125 Floor -Carpet David Harris p. 347 270.0 0.30 0.15 0.17 Floor -Vinyl David Harris p. 347 0.0 0.05 0.02 0.03 Ceiling -Drywall David Harris p. 348 270.0 0.50 0.10 0.08 Walls -Drywall David Harris p. 348 594.0 0.50 0.10 0.08 Totals 1134 Room Effect 10*1og (Room Absorption in Sabins)/(ExteriorWall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 46 25 32 37 25 32 37 0.12 0.32 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.4948 0.0156 0.0099 38 0.3892 0.9777 0.1550 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0030 0.0033 0.0006 25.26 24.76 32.56 4000 125 0.30 40.50 45.90 32.40 0.02 0.00 0.00 0.00 0.03 27.00 21.60 13.50 0.03 59.40 47.52 29.70 126.9 115.02 75.6 -3.69 -4.12 -5.94 15.57 14.64 20.61 16.10 8.60 3.20 31.67 23.24 23.81 31.54 23.11 23.69 Job Number: 5400 Analyst: A. Stalker 0.0062 0.0031 0.0309 0.0098 0.0098 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 39.03 43.62 43.62 86.40 140.40 81.00 0.00 0.00 0.00 8.10 8.10 8.10 17.82 17.82 17.82 dB 39.74 112.32 166.32 106.92 158.54 -4.22 -2.52 -4.44 -2.73 28.81 35.10 33.19 0.00 -1.20 -1.00 28.81 33.90 32.19 28.68 33.78 32.06 30.4 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 2, 2nd Floor Room: Bedroom 2 (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 193.0 46 27 42 Dual-Glazed Windows ABC Window Co. 27.5 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 220.5 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Source Area NRC 125 Floor-Carpet David Harris p. 347 149.5 0.30 0.15 0.17 Floor -Vinyl David Harris p. 347 0.0 0.05 0.02 0.03 Ceiling -Drywall David Harris p. 348 149.5 0.50 0.10 0.08 Walls -Drywall David Harris p. 348 441.0 0.50 0.10 0.08 Totals 740 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 25 32 37 25 32 37 0.12 0.32 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.3851 0.0122 0.0077 38 0.2184 0.5487 0.0870 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0027 0.0025 0.0004 25.63 25.95 33.67 4000 125 0.30 22.43 25.42 17.94 0.02 0.00 0.00 0.00 0.03 14.95 11.96 7.48 0.03 44.10 35.28 22.05 81.475 72.655 47.465 -4.32 -4.82 -6.67 15.30 15.12 21.00 16.10 8.60 3.20 31.40 23.72 24.20 31.28 23.60 24.08 Job Number: 5400 Analyst: A. Stalker 0.0048 0.0024 0.0024 0.0174 0.0055 0.0055 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 39.97 44.45 44.45 47.84 77.74 0.00 0.00 0.00 4.49 4.49 4.49 13.23 13.23 13.23 65.555 95.455 62.565 -5.27 -3.64 -5.47 28.70 34.81 32.98 0.00 -1.20 -1.00 28.70 33.61 31.98 28.58 33.49 31.85 dB 40.59 87.87 -4.00 30.2 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 2, 2nd Floor Room: Bedroom 3 (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC Stucco David Harris p. 371 93.0 46 Dual-Glazed Windows ABC Window Co. 15.0 26 Fixed Window ABC Window Co. 0.0 26 Totals 108 Composite Exterior Wall Sound Transmission Loss 1 O*LOG( 1/t) (2) Room Effects (Absorption) Room Surface I Material Floor -Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals Source David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 Area NRC 132.0 0.30 0.0 0.05 132.0 0.50 414.0 0.50 678 125 27 42 21 17 21 17 125 0.15 0.02 0.03 0.10 0.08 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects +Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 25 32 37 25 32 37 0.12 0.32 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.1856 0.0059 0.0037 38 0.1191 0.2993 0.0474 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0028 0.0028 0.0005 25.50 25.49 33.25 4000 125 0.30 19.80 22.44 15.84 0.02 0.00 0.00 0.00 0.03 13.20 10.56 6.60 0.03 41.40 33.12 20.70 74.4 66.12 43.14 -1.62 -2.13 -3.99 17.88 17.36 23.26 16.10 8.60 3.20 33.98 25.96 26.46 33.85 25.83 26.34 Job Number: 5400 Analyst: A. Stalker 0.0012 0.0095 0.0030 0.0030 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 39.62 44.14 44.14 42.24 0.00 0.00 0.00 3.96 3.96 3.96 12.42 12.42 12.42 58.62 85.02 55.98 -2.65 -1.04 -2.85 30.96 37.10 35.29 0.00 -1.20 -1.00 30.96 35.90 34.29 30.84 35.78 34.16 dB 40.27 77.66 -1.43 32.6 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 2, 2nd Floor Room: Bonus Room (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 434.0 46 27 Dual-Glazed Windows ABC Window Co. 43.0 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 477 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Source Area NRC 125 Floor -Carpet David Harris p. 347 231.0 0.30 0.15 0.17 Floor -Vinyl David Harris p. 347 0.0 0.05 0.02 0.03 Ceiling -Drywall David Harris p. 348 231.0 0.50 0.10 0.08 Walls -Drywall David Harris p. 348 477.0 0.50 0.10 0.08 Totals 939 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 49 25 37 25 32 37 0.12 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 . 4000 125 54 0.8659 0.0274 38 0.3416 0.8580 0.1360 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0025 0.0019 0.0003 25.97 27.31 34.93 4000 125 0.30 34.65 39.27 27.72 0.02 0.00 0.00 0.00 0.03 23.10 18.48 11.55 0.03 47.70 38.16 23.85 105.45 95.91 63.12 -6.55 -6.97 -8.78 13.41 14.35 20.15 16.10 8.60 3.20 29.51 22.95 23.35 29.39 22.82 23.22 Job Number: 5400 Analyst: A. Stalker 0.0271 0.0086 0.0086 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 40.98 45.31 45.31 73.92 120.12 69.30 0.00 0.00 0.00 6.93 6.93 6.93 14.31 14.31 14.31 dB 41.49 95.16 141.36 90.54 133.58 -7.00 -5.28 -7.22 -5.53 27.98 34.03 32.09 0.00 -1.20 -1.00 27.98 32.83 31.09 27.86 32.70 30.97 29.2 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 3, 1st Floor Room: Great Room (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC Stucco David Harris p. 371 213.3 46 Dual-Glazed Windows ABC Window Co. 101.8 26 Fixed Window ABC Window Co. 0.0 26 Totals 315 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Floor-Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals Source David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 Area NRC 306.0 0.30 0.0 0.05 306.0 0.50 441.0 0.50 1053 125 27 21 17 21 17 125 0.15 0.02 0.03 0.10 0.08 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss+ Room Effects+ Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 46 49 25 32 37 25 32 37 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.4255 0.0135 0.0085 38 0.8082 2.0302 0.3218 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0039 0.0065 0.0010 24.07 21.88 29.79 4000 125 0.30 45.90 52.02 0.02 0.00 0.00 0.00 0.03 30.60 24.48 15.30 0.03 44.10 35.28 22.05 120.6 111.78 74.07 -4.17 -4.50 -6.29 13.90 11.38 17.51 16.10 8.60 3.20 30.00 19.98 20.71 29.88 19.85 20.58 Job Number: 5400 Analyst: A. Stalker 0.0054 0.0027 0.0027 0.0642 0.0203 0.0203 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0002 0.0001 0.0001 36.56 41.37 41.37 91.80 0.00. 0.00 0.00 9.18 9.18 9.18 13.23 13.23 13.23 dB 37.44 120.33 181.53 114.21 173.75 -4.18 -2.39 -4.41 -2.58 26.38 32.97 30.96 0.00 -1.20 -1.00 26.38 31.77 29.96 26.26 31.65 29.84 28.3 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 3, 1st Floor Room: Dining Room (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 46.0 46 27 42 Dual-Glazed Windows ABC Window Co. 80.0 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 126 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) 44 25 32 25 32 4000 54 37 38 37 38 Absorption Coefficients by Frequency (Hz) Room Surface I 125 I 250 I 500 11000 I 2000 I 4000 Material Source Area NRC Floor -Carpet David Harris p. 347 231.0 0.30 0.15 0.17 0.12 0.32 0.52 0.30 Floor -Vinyl David Harris p. 347 0.0 0.05 0.02 0.03 0.05 0.03 0.03 0.02 Ceiling -Drywall David Harris p. 348 231.0 0.50 0.10 0.08 0.05 0.03 0.03 0.03 Walls -Drywall David Harris p. 348 400.5 0.50 0.10 0.08 0.05 0.03 0.03 0.03 Totals 862.5 Room Effect 10*1og (Room Absorption in Sabins}/(Exterior Wall Area} (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 125 0.0918 0.0029 0.6355 1.5962 0.0000 0.0000 0.0000 0.0000 0.0058 0.0127 22.39 18.96 125 I 250 34.65 39.27 0.00 0.00 23.10 18.48 40.05 32.04 97.8 89.79 -1.10 -1.47 15.29 11.49 16.10 8.60 31.39 20.09 31.26 19.97 0.0018 0.2530 0.0000 0.0000 0.0020 26.94 Job Number: 5400 Analyst: A. Stalker 0.0012 0.0006 0.0505 0.0160 0.0160 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0004 0.0001 0.0001 33.87 38.82 38.82 Absorption (Sabins) I 500 11000 I 2000 I 4000 I 27.72 73.92 120.12 69.30 0.00 0.00 0.00 0.00 11.55 6.93 6.93 6.93 20.03 12.02 12.02 12.02 dB 34.87 59.295 92.865 139.07 88.245 131.28 -3.27 -1.33 0.43 -1.55 0.18 17.67 26.55 33.25 31.27 3.20 0.00 -1.20 -1.00 20.87 26.55 32.05 30.27 20.74 26.42 31.92 30.15 28.8 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 3, 1st Floor Room: Bedroom 4 (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 198.5 46 27 42 Dual-Glazed Windows ABC Window Co. 35.5 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 234 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) 44 46 25 32 25 32 4000 49 54 37 38 37 38 Absorption Coefficients by Frequency (Hz) Room Surface I 125 I 250 I 500 11000 I 2000 I 4000 Material Source Area NRC Floor -Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 168.0 0.0 168.0 468.0 804 0.30 0.15 0.17 0.05 0.02 0.03 0.50 0.10 0.08 0.50 0.10 0.08 Room Effect 1 O*log (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects +Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 0.12 0.32 0.52 0.30 0.05 0.03 0.03 0.02 0.05 0.03 0.03 0.03 0.05 0.03 0.03 0.03 Job Number: 5400 Analyst: A. Stalker Fractional Area S/(10"(TU10)) 125 0.3961 0.0125 0.0050 0.0025 0.0025 0.2820 0.7083 0.1123 0.0224 0.0071 0.0071 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0029 0.0031 0.0005 0.0001 0.0000 0.0000 25.38 25.11 32.89 39.32 43.88 43.88 Absorption (Sabins) 125 I 250 I 500 11000 I 2000 I 4000 I 25.20 28.56 20.16 53.76 87.36 50.40 0.00 0.00 0.00 0.00 0.00 0.00 16.80 13.44 8.40 5.04 5.04 5.04 46.80 37.44 23.40 14.04 14.04 14.04 88.8 79.44 51.96 72.84 106.44 69.48 -4.21 -4.69 -6.54 -5.07 -3.42 -5.27 15.17 14.42 20.36 28.25 34.46 32.60 16.10 8.60 3.20 0.00 -1.20 -1.00 31.27 23.02 23.56 28.25 33.26 31.60 31.15 22.90 23.43 28.12 33.13 31.48 dB 40.00 98.74 -3.75 29.9 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 3, 2nd Floor Room: Master Bedroom (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 322.0 46 27 Dual-Glazed Windows ABC Window Co. 47.0 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 369 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Source Area NRC 125 Floor -Carpet David Harris p. 347 238.0 0.30 0.15 0.17 Floor -Vinyl David Harris p. 347 0.0 0.05 0.02 0.03 Ceiling -Drywall David Harris p. 348 238.0 0.50 0.10 0.08 Walls -Drywall David Harris p. 348 558.0 0.50 0.10 0.08 Totals 1034 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss+ Room Effects+ Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 49 25 32 .37 25 32 37 0.32 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.6425 0.0203 0.0128 38 0.3733 0.9378 0.1486 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0028 0.0026 0.0004 25.60 25.86 33.59 4000 125 0.30 35.70 40.46 28.56 0.02 0.00 0.00 0.00 0.03 23.80 19.04 11.90 0.03 55.80 44.64 27.90 115.3 104.14 68.36 -5.05 -5.49 -7.32 .14.55 14.36 20.27 16.10 8.60 3.20 30.65 22.96 23.47 30.53 22.84 23.34 Job Number: 5400 Analyst: A. Stalker 0.0081 0.0041 0.0041 0.0297 0.0094 0.0094 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 39.90 44.39 44.39 76.16 71.40 0.00 0.00 0.00 7.14 7.14 7.14 16.74 16.74 16.74 dB 40.53 100.04 147.64 95.28 139.86 -5.67 -3.98 -5.88 -4.21 28.23 34.41 32.51 0.00 -1.20 -1.00 28.23 33.21 31.51 28.11 33.09 31.38 29.7 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 3, 2nd Floor Room: Bedroom 2 (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC Stucco David Harris p. 371 65.0 46 Dual-Glazed Windows ABC Window Co. 25.0 26 Fixed Window ABC Window Co. 0.0 26 To~~ 90 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Floor -Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals Source David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 Area NRC 110.0 0.30 0.0 0.05 110.0 0.50 378.0 0.50 598 125 27 42 21 17 21 17 125 0.15 0.17 0.02 0.03 0.10 0.08 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects +Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 25 32 37 25 32 37 0.12 0.32 0.52 0.05 0.03 0.03 0.05 0.03 0.03 0.05 0.03 0.03 4000 125 54 0.1297 38 0.1986 0.4988 0.0791 38 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0036 0.0056 0.0009 24.38 22.53 30.42 4000 125 0.30 16.50 18.70 13.20 0.02 0.00 0.00 0.00 0.03 11.00 8.80 5.50 0.03 37.80 30.24 18.90 65.3 57.74 37.6 -1.39 -1.93 -3.79 16.99 14.60 20.63 16.10 8.60 3.20 33.09 23.20 23.83 32.96 23.07 23.71 Job Number: 5400 Analyst: A. Stalker 0.0016 0.0008 0.0008 0.0158 0.0050 0.0050 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0002 0.0001 0.0001 37.14 41.90 41.90 35.20 57.20 0.00 0.00 0.00 3.30 3.30 3.30 11.34 11.34 11.34 49.84 71.84 47.64 -2.57 -0.98 -2.76 28.57 34.92 33.14 0.00 -1.20 -1.00 28.57 33.72 32.14 28.44 33.60 32.02 dB 37.98 65.10 -1.41 30.7 I INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 3, 2nd Floor Room: Bedroom 3 (1) Transmission Loss Calculations (Exterior Wall) Transmission Loss (dB) by Frequency (Hz) Exterior Watt Wall 125 I 250 I 500 11000 I 2000 I 4000 Assembly Source Area STC Stucco David Harris p. 371 Dual-Glazed Windows ABC Window Co. Fixed Window ABC Window Co. 87.0 30.0 0.0 Totals 117 46 26 26 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) Room Surface I Material Floor -Carpet Floor -Vinyl Ceiling -Drywall Walls -Drywall Totals Source David Harris p. 347 David Harris p. 347 David Harris p. 348 David Harris p. 348 Area NRC 156.0 0.30 0.0 0.05 156.0 0.50 450.0 0.50 762 27 42 21 17 21 17 125 0.15 0.17 0.02 0.03 0.10 0.08 0.10 0.08 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects +Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 44 46 49 54 25 32 37 38 25 32 37 38 4000 0.12 0.32 0.52 0.30 0.05 0.03 0.03 0.02 0.05 0.03 0.03 0.03 0.05 0.03 0.03 0.03 125 I 0.1736 0.2383 0.0000 0.0000 0.0035 24.53 125 23.40 0.00 15.60 45.00 84 -1.44 Job Number: 5400 Analyst: A. Stalker Fractional Area S/(10"(TU10)) 250 I 500 11000 I 2000 I 4000 I 0.0055 0.0035 0.0022 0.0011 0.0011 0.5986 0.0949 0.0189 0.0060 0.0060 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0052 0.0008 0.0002 0.0001 0.0001 22.87 30.75 37.44 42.18 42.18 26.52 18.72 49.92 81.12 46.80 0.00 0.00 0.00 0.00 0.00 12.48 7.80 4.68 4.68 4.68 36.00 22.50 13.50 13.50 13.50 75 49.02 68.1 99.3 64.98 -1.93 -3.78 -2.35 -0.71 -2.55 17.10 14.94 20.98 29.09 35.47 33.63 16.10 8.60 3.20 0.00 -1.20 -1.00 33.20 23.54 24.18 29.09 34.27 32.63 33.07 23.41 24.05 28.96 34.14 32.50 dB 38.27 91.67 -1.06 31.1 INTERIOR NOISE REDUCTIONS Project Name: Robertson Ranch Planning Area 18 Final Noise Analysis Floor Plan: Plan 3, 2nd Floor Room: Bonus Room (1) Transmission Loss Calculations (Exterior Wall) Exterior Wall Wall Assembly Source Area STC 125 Stucco David Harris p. 371 206.5 46 27 42 Dual-Glazed Windows ABC Window Co. 32.0 26 21 17 Fixed Window ABC Window Co. 0.0 26 21 17 Totals 238.5 Composite Exterior Wall Sound Transmission Loss 10*LOG(1/t) (2) Room Effects (Absorption) 44 46 25 32 25 32 4000 54 37 38 37 38 Absorption Coefficients by Frequency (Hz) Room Surface I 125 I 250 I 500 r 1000 I 2000 14000 Material Source Area NRC Floor -Carpet David Harris p. 347 217.0 0.30 0.15 0.17 0.12 0.32 0.52 0.30 Floor -Vinyl David Harris p. 347 0.0 0.05 0.02 0.03 0.05 0.03 0.03 0.02 Ceiling -Drywall David Harris p. 348 217.0 0.50 0.10 0.08 0.05 0.03 0.03 0.03 Walls -Drywall David Harris p. 348 531.0 0.50 0.10 0.08 0.05 0.03 0.03 0.03 Totals 965 Room Effect 10*1og (Room Absorption in Sabins)/(Exterior Wall Area) (3) Adjustment Factor (Transmission Loss + Room Effects + Adjustment Factor) Octave Band Frequency Correction Factors for A-Weighted Sound Levels A-Weighted Sound Levels CNEL dBA Noise Reduction 125 0.4120 0.0130 0.2542 0.6385 0.0000 0.0000 0.0000 0.0000 0.0028 0.0027 25.54 25.64 125 I 250 32.55 36.89 0.00 0.00 21.70 17.36 53.10 42.48 107.35 96.73 -3.47 -3.92 16.07 15.72 16.10 8.60 32.17 24.32 32.05 24.19 0.1012 0.0000 0.0000 0.0005 33.38 Job Number: 5400 Analyst: A. Stalker 0.0052 0.0026 0.0202 0.0064 0.0064 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0001 0.0000 0.0000 39.73 44.24 44.24 Absorption (Sabins) I 500 11000 I 2000 I 4000 I 26.04 69.44 112.84 65.10 0.00 0.00 0.00 0.00 10.85 6.51 6.51 6.51 26.55 15.93 15.93 15.93 63.44 91.88 135.28 87.54 -5.75 -4.14 -2.46 -4.35 21.63 29.59 35.78 33.89 3.20 0.00 -1.20 -1.00 24.83 29.59 34.58 32.89 24.71 29.46 34.45 32.76 dB 40.37 127.51 -2.72 31.1