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Home My WebLink AboutCT 2016-0002; TOWN HOUSE; INTERIOR NOISE EVALUATION; 2017-01-31L^n ulting, in^. 4i42S Chisotm Trail Munieta, CA phone 1U0'4T^-IZ9^ www.ldneon6ulting.nef fyin 7UO'0Si'4i4'^ January 31, 2017 Mark Benjamin Archipelago Development 2685 State Street Carlsbad, CA^92D08 Subject: Town House Interior Noise Evaluation in Carlsbad OA The firm of Ldn Consulbng, Inc. is pleased to submit the following intenor noise impact analysis for the proposed Town House residential development in the City of Carlsbad The purpose of the survey is to determine the estimated extenor and interior noise levels within the outdoor areas of the project site and within the residential structures and recommend mitigation measures for compliance with the California Code of Regulations Title 24 and the City of Carlsbad guidelines and requirements for noise PROJECT LOCATION/DESCRIPTION The proposed site is located on approximately 0 22 acres and consists of seven (7) multi-family residential condominium units and one (1) office condominium unit in a four-story building The proposed project is located at 2677 State Street, west of Interstate 5 in the Oty of Carlsbad, CA. The pnmary noise source that affects the site is the San Diego Northern Railway (SDNR) located approximately 205 f^ west of the site and traffic along State Street as can be seen in Figure 1. The project site configuration is provided in Figure 2 below. ACOUSTICAL FUNDAMENTALS Noise IS defined as unwanted or annoying sound which interferes with or disrupts normal activities. Exposure to high noise levels has been demonstrated to cause heanng loss The individual human response to environmental noise is based on the sensitivity of that individual, the type of noise that occurs and when the noise occurs 1/31/2017 1 1709-02 Town House Noise Report Mark Benjamin Archipelago Development 2685 State Street Carlsbad, CA 92008 Ldn Coruultlng, Inc. 4z4ze ^isclm Trail Murriefa, CA i25(r2 phone 7Uo-477-i2$? Fait 7laO-0S1-4f47 Figure 1: Project Site Location W 1/31/2017 1709-02 Town House Noise Report Mark Benjamin Archipelago Development 2685 State Street Carlsbad, CA 92008 Ldn insulting. Inc. 4i42S Chisolm Trail, Mumfta, CA lZ5(fZ phone 7liO-47?'IZ$? Fan no-lfS1-4l4? Figure 2: Proposed Project Site Pian "OOQO □ rmn □111 II rJ-M-M- Z/IO-* JJ\ u-il 2/\. U-S£ 1/31/2017 1709-02 Town House Noise Report Mark Benjamin Lxiii ^■OTHUjifiniL Z/KLt^elopment J5^ ^2685 State Street phem* KfO-4Tt-aSf Carlsbad, CA 92008 F» Tbo-0M-4i49 Sound IS measured on a logarithmic scale consisbng of sound pressure levels known as a decibel (dB) The sounds heard by humans typically do not consist of a single frequency but of a broadband of frequencies having different sound pressure levels. The method for evaluabng all the frequencies of the sound is to apply an A-weighbng to reflect how the human ear responds to the different sound levels at different frequenaes The A-weighted sound level adequately desaibes the instantaneous noise whereas the equivalent sound level depicted as Leq represents a steady sound level containing the same total acoustical energy as the actual fluctuabng sound level over a given bme interval. The Community Noise Equivalent Level (CNEL) is the 24 hour A-weighted average for sound, with corrections for evening and nightbme hours. The correcbons require an addibon of 5 deabels to sound levels in the evening hours between 7pm and 10 p m and an addibon of 10 deabels to sound levels at nightbme hours between 10 p m and 7am These addibons are made to account for the increased sensibvity dunng the evening and nighttime hours when sound appears louder CNEL values do not represent the actual sound level heard at any parbcular bme, but rather represents the total sound exposure. Addibonally, Sound Transmission Qass (or STC) is an integer rabng of how well airborne sound IS attenuated by a building partition. STC is widely used to rate intenor parbtions, ceilings/floors, doors, windows and exterior wall configurabons (see ASTM Intemabonal Classification E413 and E90). The STC number is denved from tested sound attenuabon values found at the 1/3 octave band frequencies These transmission-loss (TL) values are then plotted and compared to a standard reference contour Acousbcal engineers fit these values to the appropriate TL Curve to determine a single STC value found at 500 Hertz. STC is roughly the deabel reducbon in noise a parbbon can provide, abbreviated 'dB'. If an 85 dB sound on one side of a wall is reduced to 50 dB on the other side, that parbbon is said to have an STC of 35. This number does not apply across the range of frequencies because the STC value is derived from a curve-fit from the tested 1/3 octave band frequenaes. Any parbbon will have less TL at lower frequencies For example, a wall with an STC of 35 may provide over 40 dB of attenuabon at 3000 Hz but only 15 dB of attenuabon at 125 Hz. 1/31/2017 4 1709-02 Town House Notse Report Mark Benjamin Ldn Considting, Inc. Archipelago Development ^ 2685 State Street ^tom i(to-m-a.99 Carlsbad, CA 92008 fiw ■n^-(ai-4i4y INTERIOR NOISE STANDARDS Callfomla's Title 24 Noise Standards The California Commission on Housing and Community Development adopted noise insulabon standards for multi-family residential buildings (Title 24, Part 2, California Code of Regulations or CCR). CCR Title 24 establishes standards, based on the U.S. Department of Housing and Urban Development (HUD) requirements, for intenor room noise (attnbutable to outside noise sources) The regulations also speafy that acoustical studies must be prepared whenever a multi-family residential or motel/hotel building or structure is proposed to be located near an existing or adopted freeway route, expressway, parkway, major street, thoroughfare, rail line, rapid transit line, or industrial noise source, and where such noise sources create an extenor CNEL (or jjdn) of 60 dBA or greater. Such acoustical analysis must demonstrate that the residence has been designed to limit intruding noise to an intenor CNEL (or Ldn) of at least 45 dBA. City of Carlsbad Noise Standards The City of Carlsbad's General Plan Noise Element requires that all extenor sensitive areas shall limit noise exposure. For noise sensitive residential land uses, the City has adopted a policy which has established a ^normally acceptable" extenor noise level goal of 60 dBA CNEL for the outdoor areas and an interior noise level of less than 45 dBA CNEL However, the Qty has also established a "conditionally acceptable" policy goal of up to 65 dBA CNEL for residential land uses. For residential properties identified as requiring a noise study, a study shall be prepared by an acoustical professional This study shall document the projected maximum extenor noise level and mitigate the projected exterior noise level to a maximum allowable noise level. Intenor noise levels should be mitigated to a maximum of 45 dBA CNEL in all habitual rooms when the extenor of the residence are exposed to levels of 60 dBA CNEL or more. If windows and doors are required to be closed to meet the intenor noise standard, then mechanical ventilation shall be provided per Qty requirements. 1/31/2017 5 1709-02 Town House Hotse Report Mark Benjamin Archipelago Development 2685 State Street Carisbad, CA 92008 Liln ConBuhing, Inc. Chuelm Tnul Mumrta, CA fhem T(tO-4n-aS9 Fn KfO-btl-4149 ANALYSIS PROCEDURES Exterior Noise Levels Rail ActMbes Noise measurements were taken at the site using a Larson-Davis Model LxT Type 1 preasion sound level meter The noise level meter was programmed in "slow" mode and set to record noise levels in "A" weighted form The sound level meter and microphone were mounted on a tnpod, five feet above the ground and equipped with a windscreen during all measurements. The sound level meter was calibrated before and after the monitoring using a Larson-Davis calibrator. Model CAL 200 The site was monitored in 1-minute intervals or increments so the tram acbvibes could be easily idenbfled The noise measurement was conducted along the western porbon of the site faang the rail alignment dunng a tram pass-by event to determine the noise levels from the tram activity. The result of the noise level measurement is presented m Table 1. Table 1: Measured Train Noise Levels Noise Levels (dBA) Description Lmax Lmin LIO ISO East of Rail nght-of-way January 27, 2017 Due to the proximity of the noise measurement to the railroad the overall sound level was found to be 72.9 dBA CNEL for a single event lastng less than 2-mmutes. Based on existing tram schedules, the peak hourly traffic volume is expected to be four (4) trams per hour. The statistical indicators LIO, L50, and L9G, are also given Based on the L90 data, 90% of the time the noise level is below 47 dBA due to very low traffic volumes adjacent to and around the site. The San Diego Northern Railway (SDNR) segment adjacent to the project site is utilized for both commuter trams (Coaster and Surflmer) and a few freight trams. As can be seen from the Lmax data, the tram horn at a nearby grade aossmg was 87 8 dBA The noise levels at the site are relatively low but the tram noise elevates the overall noise levels above 60 dBA CNEL. 1/31/2017 1709-02 Town House Noee Report Mark Benjamin Ldn Constdflng, Inc. Archipelago Development mJSIi ca n9a. 2685 State Street phon* KfO-4n-a.S9 Carlsbad, CA 92008 Fn 100-^1-4149 Hourly noise levels at the proposed building fagade would be further reduced due to distance, duty-cycle, and existing and proposed site features. The noise reduction due to distance and a duty-cycle of 8 minutes in an hour is and 8.8 dBA GNEL The worst-case daily tram activity is as follows: 50 commuter tram and freight trams (Source. NTCD, AMTRAK and SANDAG, 2014). By the year 2030, rail operations are assumed to increase to a total of 98 trams per day due to overall growth, the addition of Metrolmk Commuter Service and planned infrastructure upgrades. This would result m a noise level increase of 2.9 dBA CNEL, raising the noise levels to approximately 65 dBA CNEL Based upon these findings and the instantaneous peaks from the tram operations, mtenor noise levels need to be reduced to meet the CCR Title 24 and Qty of Carlsbad requirements. Traffic on State Street The pnmary source of traffic noise impacts to the project site will be from adjacent State Street. The projected roadway noise levels from vehicular traffic were calculated using the methods m the Highway Noise Model published by the Federal Highway Administration (FHWA Highway Traffic Noise Prediction Model, FHWA-RD-77-108, December, 1978). The FHWA Model uses the traffic volume, vehicle mix, speed, and roadway geometry to compute the equivalent noise level. A spreadsheet calculation was used which computes equivalent noise levels for each of the time periods used m the calculation of CNEL. Weighting these equivalent noise levels and summing them gives the CNEL for the traffic projections. Future year 2035 traffic along State Street is predicted to be at most 6,700 average daily tnps (ADT). The speed limit along State Street is 30 MPH Based on the extenor noise model, the worst-case cumulative noise level was found to be 64 5 dBA CNEL at the site Based upon these findings, if balconies are required for private outdoor usable space, the balconies would require barriers to reduce exterior noise to below the City of Carlsbad exterior noise level standards Therefore, if balconies are required that face the roadway or rail alignment, the balconies should be of solid construction measunng a minimum of Vh. feet m height to reduce noise levels at the private uses. The solid railing is antiapated to achieve a 5 decibel reduction based on elevation off^ts and reduce the noise levels at the balconies. 1/31/2017 7 1709-02 Town House Nose Report Mark Benjamin Likt ConBuhirn fnc. Archipelago Development ^ ^ 2685 State Street pb^ TffO-4m-ttS* Carlsbad, CA 92008 Fm. Kto-w-H^ Interior Noise Levels The methodology used to determine the resultant intenor noise levels is based upon the extenor noise level minus the sound transmission loss as identified in the Amencan Soaety of Tesbng and Materials (ASTM) guideline: E413 8iE90. The exterior noise levels at the proposed structures calculated in terms of dBA are converted to the six octave band sound pressure levels between: 125 Hertz - 4000 Hertz. Acousbcal modeling of the proposed project dwelling units was performed in accordance with the above guidelines and included combining the transmission loss for each of the building components that will reduce the intenor noise levels. Building components typically include the windows, extenor doors, and extenor walls. The total noise reducbon is dependent upon the transmission loss of each building component, their subsequent surface area, quality of the building/construcbon matenals, a building fagade and angle correcbon The intenor noise level is also dependent on the acousbcal energy absorbed within the room based upon the Noise Reducbon Coeffiaents (NRG). NRG is a scalar representabon of the amount of sound energy absorbed upon striking a particular surface and the anthmebc value average of sound absorpbon coeffiaents indicabng a matenal's ability to absorb sound The absorpbon coeffiaents for individual surfBce areas such as carpiet, drywall and furnishings are used to calculate the intenor room effects. The calculated building noise reducbon includes both the room absorpbon charactensbcs and the transmission loss from the extenor wall assembly The intenor noise reducbon calculabons were performed using Ldn's interior noise model. The model converts the extenor sound level to octave band frequenaes and accounts for the transmission loss, correcbon factors and room absorpbon The floor plans used for this analysis were provided by AVRP Skyport Studios received January 2017 The following construcbon details were ubiized for each of the building assemblies to determine the noise reducbon charactensbcs: Exterior walls and roof assemblies must have a Sound Transmission Qass (STG) rabng of 46 or better. Extenor walls with this rabng consist of TyiA" studs or larger, spaced 16" o.c. with R-13 insulabon minimum and an extenor surface of 7/8" cement plaster (stucco). Intenor wall and ceiling surfaces shall be at least 1/2" thick gypsum or plaster. Roof assemblies should have a minimum of 1^" sheathing, R-30 insulabon and sealed to prevent noise leaks. Glass assemblies should be dual-glazed and acousbcal sealant applied around the exterior edges. The window assemblies are generally the weakest noise reduang component but are the most convenient 1/31/2017 B 1709-02 Town House Noise Report Mark Benjamin Ldn ConsiMng, Inc, Archipelago Development ^ ^r^d, £A it9a 2685 State Street pf»M K^-^n-usf Carlsbad, CA 92008 f» K^-t,ei-4i4f and cost efFecbve elements to change if additonal attenuation is needed. The STC ratngs for the glass assemblies was calculated in the interior noise model and provided in the findings below. Bathrooms, kitchens, dosets and corridors are not required to meet the 45 dBA CNEL standard and therefore were not modeled. The sensitive rooms were considered to have ble or hardwood floonng to be conservative. These rooms were modeled to determine the intenor noise reductions. If the modeled intenor ncHse levels were found to be higher than 45 dBA CNEL in the habitual areas with the minimum assembly requirements descnbed above additonal modeling was performed to determine the minimum STC ratng for the glass assemblies to further reduce intenor noise levels below the acceptable intenor threshold of 45 dBA CNEL. FINDINGS The exterior noise levels were determined to be 65 dBA CNEL. Therefore, if balconies are required that face the roadway or rail alignment, the balconies should be of solid construcbon measunng a minimum of 3!^ feet in height to reduce noise levels at the pnvate uses. The solid railing is anbapated to achieve a 5 deabel reducbon based on elevabon offsets and reduce the noise levels at the balconies. Basic calculabons show that a windows open condibon will only reduce the intenor noise levels 12-15 dBA CNEL and not provide adequate intenor noise mrbgabon To meet the 45 dBA CNEL intenor noise standard, an overall minimum intenor noise level reducbon of 20 dBA CNEL is needed for the proposed project. Therefore a dosed window condibon is required to reduce intenor noise levels to comply with CCR TrtJe 24 and Qty of Carlsbad requirements The windows dosed condibon requires that mechanical venblabon is installed to move air within the structure and control temperatures The mechanical venblabon must meet the junsdicbonal requirements for these dwelling units. The hourly building fagade noise level of 65 dBA CNEL was ublized for all proposed sensitive rooms to determine the minimum STC rabngs of the assemblies It should be noted though; maximum sound levels due to rail operabons could reach instantaneous peaks above 85 dBA due to signaling and warning devices. Although these peak noise levels may only occur for a few seconds, operation of such devices dunng nightbme hours could result in a nuisance to sensitive receptors. The necessary Sound Transmission Class and transmission losses for all glass assemblies are provided in Table 2. To meet the minimum requirements, all glass assemblies facing or having 1/31/2017 9 1709-02 Town House Notse Report Mark Benjamin Archipelago Development 2685 State Street Carlsbad, CA 92008 Ldn Consulting, Inc. 4z4jS Trui Mmnrta, CA phont ■nfO-4m-n$f Fn ■KO-U91-4141 a direct line of site to the railroad tracks should be dual-paned and acousbcal sealant applied around the extenor edges having an STC 29 rabng. The modeled results with an anbapated interior noise level of 45 dBA CNEL or less are provided as an AttachmentXo this report Table 2: Minimum Sound Transmission aass Ratings Octave Band Transmission Loss (Hz)STC Rating^Assembly 1000 2000 4000 Windows Fixed Windows G ass Doors ' STC Ratings used m Mode! Due to the rail operabons, it is recommended that intenor noise reducbon methods (i.e., dual- paned glass treatments) having a minimum sound transmission dassiflcabon (STC) rabng of 32 be installed to remediate these instantaneous noise levels from the tram acbvibes If you have any quesbons, please do not h^itate to contact me direcby at (760) 473-1253 Sincerely, Ldn Consulting, Inc. Jeremy Louden, Pnnapal Attachments:Intenor Noise Model Calculabons 1/31/2017 10 1709-02 Town House Notse Report INTERIOR NOISE CALCULATIONS Project Name Town House Ldn Consulting, Inc Building (s)All Floor Level 1 Date- 1/28/17 Arch Plan All Room Type Residential Lobby Project # 17-09 Exterior Noise Levels Frequency (Hz.) \ dBA CNEL*125 250 500 1000 2000 4O00 lExtenor Noise Level (Traffic Spectrum)65 0 510 55 7 58 5 608 57 7 52 0 Transmission Loss (TL) Transmission Loss (dB) Exterior Frequency (Hz.) Assembly Source Area STC 125 250 500 1000 2O00 4000 Stucco NBS W-50-71 180 46 27 42 44 46 49 54 Windows Milgard 0 29 19 21 23 32 38 39 Fixed Window Milgard 120 29 21 22 25 32 38 29 Glass Doors Milgard 60 29 20 18 27 34 40 30 Exterior Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805^0 28 0 15 017 0 12 0 32 0 52 0 30 Fumishings Army TM 5-805-4 0 45 0 32 0 29 0 42 058 060 048 Drywall Netwell 0 07 009 008 0 05 0 03 0 06 009 Overall Absorption Factor (Furnished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction Noise Reduction from Absorption based upon Floor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 500 1000 2000 4000 -25 4 17 9 -25 4 17 9 -25 4 17 9 -25 4 17 9 -25 4 17 9 -25 4 17 9 Overall Reduction from Tranmission Loss + Room Absorption - Surface Exposure Building Facade Noise Level (dBA CNEL) 214 65 0 Resultant Interior Noise Level (dBA CNEL)44 * Corrections tbr Facade Level was accounted for in the modeling INTERIOR NOISE CALCULATIONS Prcqect Name Building (s) Root Level Arch Plan Room Type Town House All 1 All Lobby Ldn Consulbng, Inc Date 1/28/17 Prqect # 17-09 Exterior Noise Leveis 1 Frequency (Hz.) \ dBA CNEL*125 250 500 1000 2000 4000 lExtenor Noise Level (Traffic Spectrum)65 0 510 55 7 58 5 608 511 52 0 Transmission Loss (TL) Transmission Loss (dB) Exterior Frequency (Hz.) Assembty Source Area STC 125 250 500 1000 2000 4000 Stucco NBS W-50-71 390 46 27 42 44 46 49 54 Windows Milgard 0 29 19 21 23 32 38 39 Fixed Window Milgard 56 29 21 22 25 32 38 29 Glass Doors Milgard 50 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 028 0 15 0 17 0 12 0 32 0 52 0 30 Furnishings Army TM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Ndwell 0 07 009 0 08 0 05 0 03 006 0 09 Overall Absorpbon Factor (Furnished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4000 Noise Reduction from Absorpbon based upon Roor Area -24 9 -24 9 -24 9 -24 9 -24 9 -24 9 Noise Level Increase for Defects and Exposed Surface Area 17 8 17 8 17 8 17 8 17 8 17 8 Overall Reducbon from Tranmission Loss + Room Absorpbon - Surface Exposure 226 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (dBA CNEL)42 * Comedxiris for Fa^de Level was accounted form the modeling INTERIOR NOISE CALCULATIONS Project Name Town House Ldn Consulting, Inc Building (s)All Floor Level 1 Date- 1/28/17 Arch Plan.All Room Type Conference Room Project # 17-09 Exterior Noise Leveis Frequettcy (Hz.) \ dBA CNEL*125 250 500 1000 2000 4000 jExtenor Noise Level (Traffic Spectrum)65 0 51 0 55 7 585 608 57 7 52 0 Transmission Loss (TL) Trattstnission Loss (dB) Exterior Frequency (Hz.) Assembly Source Area STC 125 250 500 1000 2000 4O00 Stucco NBS W-50-71 280 46 27 42 44 46 49 54 Windows Milgard 151 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 0 29 20 18 27 34 40 30 Extenor Door NBS Morwgraph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRG Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 028 015 0 17 0 12 0 32 0 52 0 30 Furnishings ArmyTM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Newell 0 07 009 0 08 0 05 0 03 006 009 Overall Absorpton Factor (Furnished Room)08 0 56 0 54 0 59 0 93 1 18 0 87 Noise Reduction Noise Reducton from Absorpton based upon Floor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 500 1000 2000 4000 -24 0 16 7 -24 0 16 7 -24 0 16 7 -24 0 16 7 -24 0 16 7 -24 0 16 7 Overall Reduction from Tianmission Loss -i- Room Absorpton - Surface Exposure Building Facade Noise Level (dBA CNEL) 21 5 650 Resultant Interior Noise Level (dBA CNEL)44 * Corrections for Fagade Level was accounted for m tfia modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Root Level Arch Plan Rxxm Type Town House All 1 All Office Ldn Consulting, Inc Date 1/28/17 Project # 17-09 Exterior Noise Leveis Exterior Noise Level (Traffic Spectrum) dBA CNEL* Frequency (Hz.) 125 250 500 1000 2O00 4000 65 0 51 0 55 7 58 5 608 SJl 520 Transmission Loss (TL) Exterior Assemtdy Source Area STC Transmission Loss (dB) Frequency (Hz.) 125 250 500 1000 2O00 4000 Stucco NBS W-50-71 160 46 27 42 44 46 49 54 Windows Milgard 0 29 19 21 23 32 38 39 Fixed Window Milgard 42 29 21 22 25 32 38 29 Glass Doors Milgard 0 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 0 28 0 15 0 17 0 12 0 32 0 52 0 30 Furnishings Army TM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Netwell 0 07 009 0 08 0 05 0 03 006 009 Overall Absorpton Factor (Fumished Room)08 0 56 0 54 0 59 0 93 1 18 0 87 Noise Reduction Noise Reduction from Absorption based upon Poor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 500 1000 2000 4O00 -21 1 15 8 -21 1 15 8 -21 1 15 8 -21 1 15 8 -21 1 15 8 -211 15 8 Overall Reducbon from Tranmission Loss + Room Absorpton - Surface Exposure Building Fagade Noise Level (dBA CNEL) 228 65 0 Resultant Interior Noise Level (dBA CNEL)42 * Corrections for Fajada Level was accounted for in the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Floor Level Arch Plan Room Type Town House All 2&3 Unit 1 Living Ldn Consulting, Inc Date 1/28/17 Project # 17-09 Exterior Noise Levels Transmission Loss (TL) Frequency (Hz.) dBA CNEL*125 250 500 1000 2000 4000 Exterror Noise Level (Traffic Spectrum)65 0 510 55 7 58 5 608 57 7 52 0 Transmission Loss (dB) Exterior Frequency (Hz.) Assembly Source Area STC 125 250 500 1000 2000 4000 Stucco NBS W-50-71 351 46 27 42 44 46 49 54 Windows Milgard 91 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 24 29 20 18 27 34 40 30 Exterior Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Absorption Coeflkients Interior Frequency (Hz.) Characteristics Source NRC 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 028 0 15 017 0 12 0 32 0 52 0 30 Fumishings Army TM 5-805-4 0 45 0 32 0 29 0 42 058 0 60 048 Drywall Netwell 0 07 009 0 08 0 05 0 03 0 06 009 Overall Absorpton Factor (Furnished Room)08 0 56 0 54 ^0 59 0 93 118 0 87 Noise Reduction Noise Reduction from Absorption based upon Floor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 500 1000 2000 4O00 -26 7 17 7 -26 7 17 7 -26 7 17 7 -26 7 17 7 -26 7 17 7 -26 7 17 7 Overall Reducbon from Tranmission Loss + Room Absorption - Surface Exposure Building Fagade Noise Level (dBA CNEL) 24 6 650 Resultant Interior Noise Level (dBA CNEL)40 * Correcbons for Fatada Levd was aaaxmtEd for in the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Root Level Arch Plan Room Type Town House All 2&3 Unrtl Master Bedroom Ldn Consulting, Inc Date 1/28/17 Project # 17-09 Exterior Noise Leveis Transmission Loss (TL) Frequency (Hz.) dBACNEL*125 250 500 1000 2000 4000 Extenor Noise Level (TrafRc Spectrum)65 0 510 55 7 58 5 608 577 52 0 Transmission Loss (dB) Exterior Frequency (Hz.) Assanbiy Source Area STC 125 250 500 1000 2000 4000 Stucco NBS W-50-71 279 46 27 42 44 46 49 54 Windows Milgard 21 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 72 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Absorption Coefficients Interior Frequency (Hz.) Characteristics Source NRC 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 0 28 0 15 0 17 0 12 0 32 0 52 0 30 Furnishings Army TM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall N^ell 0 07 009 0 08 0 05 0 03 006 009 Overall Absorpton Factor (Furnished Room)08 0 56 0 54 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4000 Noise Reduction from Absorpton based upon Roor Area -22 9 -22 9 -22 9 -22 9 -22 9 -22 9 Noise Level Increase for Defects and Exposed Surface Area 17 5 17 5 17 5 17 5 17 5 17 5 bverall Reduction from Tranmission Loss + Room Absorpton - Surface Exposure 21 5 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (dIA CNEL)43 * Corrections for Facade Level was accounted for in the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Floor Level Arch Plan. Room Type Town House All 2&3 Unit 1 Bedroom Ldn Consulbng, Inc Date- 1/28/17 Project # 17-09 Exterior Noise Leveis Transmission Loss (TL) 1 Frequency (Hjl) dBA CNEL*125 250 500 1000 2000 4000 Extenor Noise Level (Traffic Spectrum)65 0 510 55 7 58 5 608 57 7 52 0 Transmission Loss (dB) Exterior Frequency (Hz.) Assembly Source Area STC 125 250 500 lOOO 2000 4000 Stucco NBS W-50-71 180 46 27 42 44 46 49 54 Windows Milgard 64 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 0 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Absorption Coefficients Interior frequency (Hz.) Characteristics Source NRC 125 250 500 lOOO 2000 4000 Carpet Army TM 5-805-4 0 28 0 15 017 0 12 0 32 0 52 1 0 30 Furnishings Army TM 5-805-4 D 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Netwell 0 07 009 0 08 0 05 0 03 0 06 0 09 Overall Absorption Factor (Furnished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction Noise Reducbon from Absorption based upon Floor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 500 lOOO 2000 4000 -23 6 16 1 -23 6 16 1 -23 6 16 1 -23 6 16 1 -23 6 161 -23 6 16 1 Overall Reducbon from Tranmission Loss -i- Room Absorpbon - Surface Exposure Building Fagade Noise Level (dBA CNEL) 24 7 65 0 Resultant Interior Noise Level (dBA CNEL)40 • Corredxxis for Fagade Level was accounted for tn the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Root Level Arch Plan Room Type Town House All 2 Unit 2 Living Ldn Consuibng, Inc Date 1/28/17 Project # 17-09 Exterior Noise Levels Transmission Loss (TL) Frequency (Hz.) dBA CNEL*125 250 500 1000 2000 4000 Extenor Noise Level (Trafflc Spectrum)65 0 510 55 7 585 608 577 52 0 Transndsslon Loss (dB) Exterior Frequency (Hz.) Assembly Source Area STC 12S 250 500 1000 2000 4000 Stucco NBS W-50-71 162 46 27 42 44 46 49 54 Windows Milgard 59 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 0 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Absorption Coefficients Interior Frequency (Hz.) Characteristics Source NRC 12S 250 500 1000 2000 4000 Carpd:Army TM 5-805-4 0 28 0 15 0 17 0 12 0 32 0 52 0 30 Furnishings Army TM 5-805-4 0 45 0 32 , 0 29 0 42 0 58 060 048 Drywall Netwell 0 07 009 008 0 05 0 03 006 009 Overall Absorption Factor (Furnished Room)08 0 56 0 54 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4000 Noise Reducbon from Absorption based upon Roor Area -26 9 -26 9 -26 9 -26 9 -26 9 -26 9 Noise Level Increase for Defects and Exposed Surface Area 16 0 16 0 16 0 16 0 16 0 16 0 Overall Reducbon from Tranmission Loss + Room Absorpbon - Surface Exposure 28 3 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (dBA CNEL)37 * Correctxxis for Facade Level was accounted for in the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Foor Level Arch Plan- Room Type Town House All 2 Unit 2 Bedroom Ldn Consultng, Inc Date 1/28/17 Project # 17-09 Exterior Noise Levels Extenor Noise Level (Trafflc Spectrom) dBA CNEL* 1 Frequency (Hz.) 125 250 SOD 1000 2000 4OO0 65 0 51 0 55 7 58 5 608 57 7 52 0 Transmission Loss (TL) Exterior Assembly Source Area STC Transmission Loss (dB) Frequency (Hz.) 125 250 500 1000 2000 4000 Stucco NBS W-50-71 162 46 27 42 44 46 49 54 Windows Milgard 18 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 0 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 0 28 0 15 0 17 0 12 0 32 0 52 0 30 Furnishings Army TM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Netwell 0 07 009 008 0 05 0 03 006 009 [overall Absorption Factor (Furnished Room)08 0 56 0 54 0 59 0 93 1 18 0 87 Noise Reduction Noise Reducbon from Absorpton based upon Foor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 500 1000 2000 4000 -215 15 4 -21 5 15 4 -21 5 15 4 -21 5 15 4 -21 5 15 4 -21 5 15 4 Overall Reduction from Tranmission Loss + Room Absorpbon - Surface Exposure Building Fagade Noise Level (dBA CNEL) 27 1 65 0 Resultant Interior Noise Level (dBA CNEL)38 * CoirectMns for Facade Level was accounlEd for m the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Rcxjr Level Arch Plan Room Type Town House All 3 Unit 2 Master Bedroom Ldn Consulbng, Inc Date 1/28/17 Project # 17-09 Exterior Noise Levels Exterior Noise Level (Traffic Spectrum) dBACNEL* Frequency (Hz.) 125 250 500 1000 2000 4OO0 65 0 510 55 7 585 608 577 520 Transmission Loss (TL) Exterior Assembly Source Area SIC Transmission Loss (dB) Frequency (Hz.) 125 250 BOO 1000 2000 4O00 Stucco NBS W-50-71 162 46 27 42 44 46 49 54 Windows Milgard 21 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 0 29 20 18 27 34 40 30 Extenor Door NBS Mofxjgraph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Requency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 0 28 0 15 0 17 0 12 0 32 0 52 0 30 Furnishings Army TM 5-805-4 0 45 0 32 0 29 0 42 058 060 048 Drywall Ndwell 0 07 009 008 0 05 0 03 0 06 0 09 Overall Absorption Factor (Furnished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4000 Noise Reduction from Absorpbon based upon Roor Area -23 5 -23 5 -23 5 -23 5 -23 5 -23 5 Noise Level Increase for Defects and Exposed Surface Area 15 5 15 5 15 5 15 5 15 5 15 5 Overall Reducbon from Tranmission Loss + Room Absorpbon - Surface Exposure 285 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (dBA CNEL)36 * Correcbons for Facade Level was accounted form the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Foor Level Arch Plan Room Type Town House All 3 Unit 2 Den Ldn Consulbng, Inc Date 1/28/17 Project # 17-09 Exterior Noise Levels Exterior Noise Level (Traffic Spectrum) dBACNEL* Frequency (Hz.) 125 250 500 1000 2000 4OO0 65 0 510 55 7 585 608 57 7 52 0 Transmission Loss (TL) Exterior Assembly Source Area STC Transmission Loss (dB) frequency (Hz.) 125 250 500 1000 2000 4O00 Stucco NBS W-50-71 256 46 27 42 44 46 49 54 Windows Milgard 150 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 48 29 20 18 27 34 40 30 Exterior Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 028 0 15 017 0 12 0 32 0 52 0 30 Fumishings Army TM 5-805^0 45 0 32 0 29 0 42 058 060 048 Drywall Netwell 0 07 0 09 008 0 05 0 03 006 009 Overall Absorpton Factor (Furnished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction Noise Reduction from Absorpton based upon Floor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 500 1000 2000 4O00 -24 4 18 0 -24 4 18 0 -24 4 18 0 -24 4 18 0 -24 4 18 0 -24 4 18 0 Overall Reducdon from Tranmission Loss -t- Room Absorpton - Surface Exposure Building Fagade Noise Level (dBA CNEL) 20 3 65 0 Resultant Interior Noise Level (dBA CNEL)45 • Corecbons for Fatade Level was accounted for in the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Root Level Arch Plan Room Type Town House All 28i3 Units Living Ldn Consultng, Inc Date 1/28/17 Project # 17-09 Exterior Noise Leveis Frequency (Hz.) | dBA CNEL*125 250 500 1000 2000 4000 lExtenor Noise Level (TrafTic Spectrum)65 0 51 0 55 7 585 60 8 57 7 52 0 Transmission Loss (TL) Transmission Loss (dB) Exterior Frequency (Hz.) Assembly Source Area STC 125 250 500 1000 2000 4000 Stucco NBS W-50-71 456 46 27 42 44 46 49 54 Windows Milgard 71 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 302 29 20 18 27 34 40 30 Exterior Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 028 0 15 0 17 0 12 0 32 0 52 0 30 Furnishings Army TM 5-805-4 0 45 0 32 0 29 0 42 058 060 048 Drywall Netwell 0 07 009 008 0 05 0 03 006 009 Overall Absorpton Factor (Furnished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4O00 Noise Reducbon from Absorption based upon Roor Area Noise Level Increase for Dd'ects and Exposed Surface Area -27 5 18 4 -27 5 18 4 -27 5 18 4 -27 5 18 4 -27 5 18 4 -27 5 18 4 bverall Reducbon from Tranmission Loss + Room Absorption - Surface Exposure 20 5 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (dBA CNEL)44 * Corrections for Facade Level was accounted for in the modeling INTERIOR NOISE CALCULATIONS Project Name Town House Ldn Consulbng, Inc 1 Building (s)All Floor Level 2&3 Date 1/28/17 Arch Plan Unit 3 Room Type Master Bedroom Project #17-09 Exterior Noise Leveis Frequency (Hz.) \ dBA CNEL*125 250 500 1000 2000 4000 Exterior Noise Level (Traffic Spectrum)65 0 51 0 55 7 58 5 608 577 52 0 Transmission Loss (TL) Transmission Loss (dB) Exterior Frequency (Hz.) Assembty Source Area STC 125 250 500 1000 2000 4000 Stucco NBS W-50-71 279 46 27 42 44 46 49 54 Windows Milgard 60 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 48 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Absorption Coefficients Interior Frequency (Hz.) Characteristics Source NRC 125 250 SOD 1000 2000 4O00 Carpet Army TM 5-805-4 028 0 15 0 17 0 12 0 32 0 52 0 30 Fumishings Army TM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Netwell 0 07 009 0 08 0 05 0 03 0 06 009 Overall Absorpton Factor (Furnished Room)08 0 56 0 54 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4000 Noise Reducbon from Absorption based upon Roor Area -Til -121 -Til -111 -Til -Til Noise Level Increase for Defects and Exposed Surface Area 17 7 111 111 111 111 111 Overall Reducbon from Tranmission Loss + Room Absorpbon - Surface Exposure 20 8 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (clBA CNEL) 44 • Corrections for Fagade Level was accounted form the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Floor Level Arch Plan Room Type Town House All 2&3 Unit 3 Bedroom Ldn Cor^lbng, Inc Date 1/28/17 Project # 17-09 Exterior Noise Leveis Frequency (Hz.) \ dBA CNEL*125 250 soo lOOO 2000 4OO0 lExtenor Noise Level CTrafflc Spectrum)65 0 510 55 7 58 5 608 577 52 0 Transmission Loss (TL) Transmission Loss (dB) Exterior Frequency (Hz.) Assembly Source Area STC 125 250 500 1000 2000 4000 Stucco NBS W-50-71 270 46 27 42 44 46 49 54 Windows Milgard 27 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 48 29 20 18 27 34 40 30 Exterior Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz) 125 250 500 1000 2OO0 4000 Carpet Army TM 5-805-4 028 0 15 0 17 0 12 0 32 0 52 0 30 Furnishings Army TM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Netweil 0 07 009 0 08 0 05 0 03 006 009 Overall Absorption Factor (Furnished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4000 Noise Reducbon from Absorption based upon Roor Area -22 4 -22 4 -22 4 -22 4 -22 4 -22 4 Noise Level Increase for Dd'ects and Exposed Surface Area 17 4 17 4 17 4 17 4 17 4 17 4 Overall Reduction from Tranmission Loss + Room Absorpbon - Surface Exposure 21 8 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (dBA CNEL)43 * Corrections for F=B;ade Level was accounted fix in the modeling INTERIOR NOISE CALCULATIONS Prcriect Name Building (s) Roor Level Arch Plan Room Type Town House All 4 PHI Living Ldn Consuitng, Inc Date- 1/28/17 Project # 17-09 Exterior Noise Leveis Frequency (Hz.) \ dBA CNEL*125 250 soo 1000 2O00 4000 |Extenor Noise Level (Traffic Spectrum)65 0 510 55 7 58 5 608 577 52 0 Transmission Loss (TL) Transmission Loss (dB) Exterior Frequency (lb.) Assembly Source Area STC 125 250 500 1000 2000 4OO0 Stucco NBS W-50-71 490 46 27 42 44 46 49 54 Windows Milgard 15 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 282 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 028 0 15 017 0 12 0 32 052 0 30 Furnishings Army TM 5-805-1 0 45 0 32 0 29 0 42 0 58 060 048 Drywall N^ell 0 07 009 0 08 0 05 0 03 006 009 [overall Absorption Factor (Furnished Room) 1 08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction Noise Reducbon from Absorpbon based upon Roor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 SOO 1000 2000 4000 -26 6 18 0 -26 6 18 0 -26 6 18 0 -26 6 18 0 -26 6 18 0 -26 6 18 0 Overall Reduction fitim Tranmission Loss + Room Absorpbon - Surface Exposure Building Fagade Noise Level (dBA CNEL) 20 5 65 0 Resultant Interior Noise Level (dBA CNEL)44 * Corrections for Fagada Level was accounted form the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Floor Level Arch Plan Room Type Town House All 4 PHI Bedroom Ldn Consulting, Inc Date 1/28/17 Project # 17-09 Exterior Noise Leveis Exterior Noise Level (Traffic Spectrum) dBA CNEL* 1 Frequency (Hz.) 125 250 500 1000 2000 4OO0 65 0 510 55 7 585 60 8 577 52 0 Transmission Loss (TL) Exterior Assembiy Source Area STC Transmission Loss (dB) Frequency (Hz.) 125 250 500 1000 2000 4000 Stucco NBS W-50-71 300 45 27 42 44 46 49 54 Windows Milgard 90 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 0 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805^0 28 0 15 0 17 0 12 0 32 052 030 Furnishings Army TM 5-805-4 0 45 0 32 0 29 0 42 058 060 048 Drywall Netwell 0 07 009 008 0 05 0 03 0 06 009 Overall Absorption Factor (Furnished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4O00 Noise Reducbon from Absorption based upon Root Area -22 7 -22 7 -in -22 7 -22 7 -in Noise Level Increase for Defects and Exposed Surface Area 16 5 16 5 16 5 16 5 16 5 16 5 Overall Reducbon from Tranmission Loss + Room Absorpbon - Surface Exposure 121 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (dBA CNEL)43 * Corrections for Facade Level was accounted Ibr in the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Floor Level Arch Plan Room Type Town House All 4 PH2 Living Ldn Consulbng, Inc Date 1/28/17 Project # 17-09 Exterior Noise Leveis Extenor Noise Level (Traffic Spectrum) dBA CNEL* Frequency (Hz.) 125 250 500 1000 2OO0 4OO0 65 0 510 55 7 58 5 608 57 7 52 0 Transmission Loss (TL) Exterior Assembly Source Area STC Transmission Loss (dB) Frequency (Hz.) 125 250 500 1000 2000 4O00 Stucco NBS W-50-71 302 46 27 42 44 46 49 54 Windows Milgard 322 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 206 29 20 18 27 34 40 30 Extenor Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRG Absorption Coefficients Frequency (Hz.) 125 250 500 1000 2000 4O0O Carpet Army TM 5-805-4 0 28 0 15 017 0 12 0 32 0 52 0 30 Fumishings Army TM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Ndwell 0 07 009 0 08 0 05 0 03 006 0 09 Overall Absorption Factor (Furnished Room)08 056 054 0 59 0 93 1 18 0 87 Noise Reduction Noise Reduction from Absorption based upon Roor Area Noise Level Increase fbr Defects and Exposed Surface Area 125 250 500 1000 2000 4000 -28 0 18 6 -28 0 18 6 -28 0 18 6 -28 0 18 6 -28 0 18 6 -28 0 18 6 Overall Reduction from Tranmission Loss + Room Absorption - Surface Exposure Building Fagade Noise Level (dBA CNEL) 19 6 65 0 Resultant Interior Noise Level (clBA CNEL)45 • CDirectxxis fbr Facade Level was accounted for n the modeling INTERIOR NOISE CALCULATIONS Project Name Building (s) Roor Level Arch Plan Room Type Town House All 4 PH2 Bedroom Ldn Consultng, Inc Date 1/28/17 Project # 17-09 Exterior Noise Levels 1 Frequettcy (Hz.) \ dBA CNEL*125 250 500 1000 2O00 4000 |Extenor Noise Level (Trafflc Spectrum)65 0 510 55 7 58 5 608 511 52 0 Transmission Loss (TL) Transmission Loss (dB) Exterior Frequency (Hz.) Assembty Source Area STC 125 250 500 1000 2000 4000 Stucco NBS W-50-71 160 46 27 42 44 46 49 54 Windows Milgard 35 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Qass Doors Milgard 0 29 20 18 27 34 40 30 Exterior Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Coeffkients Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 0 28 0 15 0 17 0 12 0 32 0 52 0 30 Fumishings Army TM 5-805-4 0 45 0 32 0 29 0 42 0 58 060 048 Drywall Netwell 0 07 009 0 08 0 05 0 03 006 009 Overall Absorption Factor (Fumished Room)08 0 56 0 54 0 59 0 93 1 18 0 87 Noise Reduction 125 250 500 1000 2000 4O00 Noise Reduction from Absorpbon based upon Roor Area -127 -in -121 -111 -121 -111 Noise Level Increase for Defects and Exposed Surface Area 15 7 15 7 15 7 15 7 15 7 15 7 Overall Reduction from Tranmission Loss -i- Room Absorpbon - Surface Exposure 26 1 Building Fagade Noise Level (dBA CNEL)65 0 Resultant Interior Noise Level (dBA CNEL)39 * Corrections for Fa;ade Level was accounted for m the modeling INTERIOR NOISE CALCULATIONS Project Name Town House Ldn Consulhng, Inc Building (s)All Root Level 4 Date 1/28/17 Arch Plan All Room Type Yoga/Offke Project # 17-09 Exterior Noise Leveis Exterior Noise Level (Traffic Spectrum) dBA CNEL* Frequency (Hz.) 125 250 500 1000 2000 4OO0 65 0 510 55 7 58 5 608 577 52 0 Transmission Loss (TL) Exterior Assembly Source Area SVC Transmission Loss (dB) Frequency (Hz.) 125 250 500 lOOO 2000 4000 Stucco NBS W-50-71 400 46 27 42 44 46 49 54 Windows Milgard 0 29 19 21 23 32 38 39 Fixed Window Milgard 0 29 21 22 25 32 38 29 Glass Doors Milgard 187 29 20 18 27 34 40 30 Exterior Door NBS Monograph 77 0 26 16 14 23 30 36 26 Room Absorption (RA) Interior Characteristics Source NRC Absorption Confidents Frequency (Hz.) 125 250 500 1000 2000 4000 Carpet Army TM 5-805-4 028 0 15 0 17 0 12 0 32 0 52 0 30 Fumishings Army TM 5-805^0 45 0 32 0 29 0 42 058 060 048 Drywall Netwell 0 07 009 0 08 0 05 0 03 006 009 Overall Absorption Factor (Fumished Room)08 0 56 054 0 59 0 93 1 18 0 87 Noise Reduction Noise Reducbon from Absorpbon based upon Roor Area Noise Level Increase for Defects and Exposed Surface Area 125 250 500 1000 2000 4000 -214 16 9 -214 16 9 -214 16 9 -214 16 9 -214 16 9 -214 16 9 Overall Reducbon from Tranmission Loss + Room Absorpbon - Surface Exposure Building Fagade Noise Level (dBA CNEL) 17 3 65 0 Resultant Interior Noise Level (dBA CNEL)48 * Corrections fbr Facade Level was accounted for in ttie rrKxfdlng