HomeMy WebLinkAboutCUP 99-30; Cannon Court; Conditional Use Permit (CUP) (7)NOISE ANALYSIS FOR
CANNON COURT
CITY OF CARLSBAD
Report #00-3 I.A
July 14, 2000
Prepared for:
J.A. Buza Corporation
P.O. Box 8617
Rancho Santa Fe, CA 92067
Prepared By:
Fred Greve, P.E.
Mestre Greve Associates
280 Newport Center Drive, Suite 230
Newport Beach, CA 92660-7528
Phone (949) 760-0891
Cannon Court
Mestre Greve Associates
Page 1
NOISE ANALYSIS FOR
CANNON COURT
CITY OF CARLSBAD
EXTERIOR NOISE MITIGATION
The Cannon Court project consists of a hotel, country store, and a restaurant. The City of Carlsbad
does not have any exterior noise standards for these uses, and therefore, no mitigation for outdoor
areas is necessary.
INTERIOR NOISE MITIGATION
Countiy Store atid Restaurant
No building upgrades are necessary to meet the City's indoor noise standard of 55 CNEL for the
country store and restaurant.
Hotel
Building surfaces for the hotel will be exposed to worst case noise levels of 77.7 CNEL, and will
therefore require at least a 32.7 dB exterior to interior noise reduction in order to meet the 45 CNEL
interior noise standard. The exterior to interior noise reduction (EWNR) was calculated for a number
of units within the hotel (see Appendix IB for analysis data). Building upgrades are needed for a
number of rooms for the hotel. The building upgrades are summarized below and are detailed in
Exhibit S-l for first floor areas, Exhibit S-2 for second floor areas, and Exhibit S-3 for third floor
areas. In all cases the area of most concem is the east end of the building that faces the freeway.
First Floor (Exhibit S-l)
1. Upgrade single window on side/comer room to EWNR rating of 28 (or STC rating of 31).
2. Upgrade windows on three units on east end to EWNR rating of 32 (or STC rating 35).
Second Floor (Exhibit S-2)
1. Upgrade all windows on the three east end units and the side/comer unit to EWNR rating of 32
(or STC rating of 35).
2. Upgrade all windows along north and south side of hotel to EWNR rating of 24 (or STC rating of
26).
3. Attach second layer of gypsum board on inside of wall for the three end units. The extra layer of
gypsum board must be attached with resilient clips (RC-1 channels).
4. All attic vents should be baffled (see Exhibits S-4 and S-5).
Third Floor (Exhibit S-3)
1. Upgrade window on side comer room to EWNR rating of 32 (or STC rating of 35).
2. Upgrade all windows along north and south side of hotel to EWNR rating of 24 (or STC rating of
26).
I *
1. upgrade window to
EWNR of 28
(orSTCofSl)
2. Upgrade
window to
EWNR of 32
(or STC of 35
MESTRE GREVE ASSOCIATES
Exhibit S-l
First Roor Building Upgrades
2. Upgrade all windows along
side of hotel to EWNR of 24
(or STC of 26)
1. Upgrade
window to
EWNR of 32
(or STC of 35)
2. Upgrade all windows
along side of hotel to EWNR
of 24
(or STC of 26)
4. Provide attic vent roof
baffles for all roof areas.
MESTRE GREVE ASSOCIATES
Exhibit S-2
Second Floor Building Upgrades
2. Upgrade all windows along
side of hotel to EWNR of 24
(or STC of 26)
1. Upgrade
window to
EWNR of 32
(or STC of 35)
4. Provide attic vent roof
baffles for all roof areas.
2. Upgrade all windows
along side of hotel to EWNR
of 24
(or STC of 26)
MESTRE GREVE ASSOCIATES
Exhibit S-3
Third Floor Building Upgrades
Noise Insulating
Material
CROSS SECTION
(BOTH SIDES ARE ENCLOSED)
MESTRE GREVE ASSOCIATES
Exhibit S-4
Example of Attic Vent Baffle (Gable)
Cannon Court
Mestre Greve Associates
Page 2
3. Attach second layer of gypsum board on inside of wall for the side/comer unit. The extra layer
of gypsum board must be attached with resilient clips (RC-1 channels).
4. All attic vents should be baffled (see Exhibits S-4 and S-5).
MECHANICAL VENTILATION
Since the noise attenuation of a building falls to about 12 dB with windows open, all buildings
exposed to noise levels greater than 57 CNEL will meet the 45 CNEL interior noise standard only with
windows closed. In order to assume that windows can remain closed to achieve this required
attenuation, adequate ventilation with windows closed must be provided per the Uniform Building
Code (1997 UBC Section 1207.1). This can be achieved with mechanical ventilation to provide fresh
air. The system must fresh make-up air obtained directly from the outside per the UBC. The fresh air
inlet duct shall be of sound attenuating constmction and shall consist of a minimum of ten feet of
straight or curved duct, or six feet plus one sharp 90 degree bend. Air conditioning units may be an
adequate substitute for mechanical ventilation as long as they meet the ventilation requirements
specified in the Uniform Building Code. The acceptability of using air conditioners to meet the
mechanical ventilation requirement varies by municipality. The local jurisdiction and the mechanical
engineer for the project should be consulted. All buildings on the site are required to have mechanical
ventilation.
Cannon Court
Mestre Greve Associates
Page 3
NOISE ANALYSIS FOR CANNON COURT
CITY OF CARLSBAD
1.0 INTRODUCTION
The purpose of this report is to assess compliance of Cannon Court with the noise standards of the
City of Carlsbad. The project calls for the constmction of a hotel, country store and restaurant. This
report addresses the future noise levels at the project site in relation to the City's 45 CNEL interior
noise standard for the hotel and the 55 CNEL indoor noise standard for the country store and
restaurant.
Site plan and grading information was obtained from McArdle Associates Architects and received July
12, 2000.
The project is located in the City of Carlsbad, as shown in Exhibit 1. The primary noise sources in the
project area is traffic noise from the San Diego Freeway (1-5), and the San Diego Northem Railway.
2.0 CITY OF CARLSBAD NOISE STANDARDS
The City of Carlsbad specifies outdoor and indoor noise limits for residential land uses. Both standards
are based upon the CNEL index. CNEL or Community Noise Equivalent Level is a 24 hour time
weighted annual average noise level based on the A-weighted decibel. A-weighting is a frequency
correction that correlates overall sound pressure levels with the frequency response of the human ear.
Time weighting refers to the fact that noise occurring during certain noise-sensitive time periods is
given more significance because it occurs at these times. In the calculation process, noise occurring in
the evening time period (7 p.m. to 10 p.m.) is increased by 5 dB, while noise occurring in the
nighttime period (10 p.m. to 7 a.m.) is increased by 10 dB. These time periods and increases were
selected to reflect increased sensitivity to noise while sleeping, eating and relaxing.
The City of Carlsbad has adopted ari interior noise standard of 45 CNEL for hotel uses which is
consistent with State building codes. The City has also adopted an interior noise standard of 55 CNEL
for commercial uses which would apply to the country store and restaurant. This analysis assesses the
noise levels within the project with respect to these standards.
3.0 METHODOLOGY
The traffic noise levels projected in this report were computed using 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 traffic volume, vehicle mix,
vehicle speed, and roadway geometry to compute the "equivalent noise level". A computer code has
been written which computes equivalent noise levels for each of the time periods used in CNEL.
Weighting these noise levels and summing them results in the CNEL for the traffic projections used.
For the railroad noise, on-site noise measurements where conducted to determine typical noise levels
for Amtrak, Coaster, and freight train operations. These noise levels were then combined with
forecasts for train operations to obtain a projection of future CNEL noise levels.
MESTRE GREVE ASSOCIATES
Exhibit 1
Vicinity Map
Cannon Court
Mestre Greve Associates
Page 4
4.0 NOISE EXPOSURE
4.1 Traffic Noise Exposure
Future traffic information (2020 build out) for 1-5 was obtained from Mr. Bob Gibbs of the San Diego
County District of Caltrans. Table 1 presents the traffic volumes, vehicle speeds, and roadway grades
used in the CNEL calculations and Table 2 presents the traffic distribution used in the calculations.
Tmck mix percentages are indicative of what is currently operating on the freeway and were obtained
from the "1997 Annual Average Daily Tmck Traffic on the Califomia State Highway System," (State
of California Department of Transportation, December 1998).
TABLE 1
Future Traffic Volumes, Speeds and Roadvyay Grades
Roadway Traffic Volume (ADT) Speed Grade (%)
San Diego Freeway (1-5) 235,000 65 <2%
TABLE 2
Traffic Distribution per Time of Day in Percent of ADT
Vehicle Type Day Evening Night
Automobile 58.02 16.58 17.50
Medium Tmck 2.46 0.74 0.74
Heavy Tmck 2.52 0.76 0.76
The FHWA model used these assumptions to compute the future noise levels at the project site. Table
3 reports the modeling results in terms of distances to the 60, 65, and 70 CNEL contours. These
represent the distances from the centeriine of the roadway to the contour value shown.
TABLE 3
Distance to Noise Contours for Future Traffic Conditions
Roadway
Distance to CNEL Contour (ft.)
-70- -65- -60-
San Diego Freeway 703 1514 3261
4.2 Railway Noise Exposure
Cannon Court
Mestre Greve Associates
Page 5
The San Diego Northem Railway mns adjacent to the proposed project site. Noise measurements of
the San Diego Northem Railway were made on January 27, 2000. The noise measurements were
performed at a distance of 190 feet with no intervening topography. These measurements were made
with a Bmel & Kjaer Type 2236 Sound Level Meter. The system was calibrated before and after each
measurement series. These noise measurement systems meet the American National Standards
Institute 'Type 1" specifications, which is the most accurate for community noise measurements. The
meter and calibrator have current certification traceable to the National Bureau Of Standards.
The noise exposure of the San Diego Northem Railway was measured in terms of SEL, the sound
exposure level. The SEL represents the total acoustic energy of an event. Therefore, an event that lasts
longer but is quieter, can have the same SEL as an event that is shorter but louder. The measurement
results are presented in Appendix lA, and summarized in Table 4. The summary below provides the
energy average SEL measured and the average number of cars for each train type.
Table 4
Train Measurement Summary (dBA)
Train Type Average SEL Average No. of Cars
Coaster 92.4 4
Amtrak 97.1 6
Freight 97.6 57
The "Assessment of Noise Environments Around Railroad Operations," (Wyle Laboratories Report
WCR-73-5, July 1973) was used in conjunction with the noise measurements to model the train noise
levels on the project site. The Wyle Train Model was run for each train type and compared to the noise
measurement results. Adjustments were then made to the model so that the model for individual trains
matched the measurement results. The calibrated model was then used with the operation forecasts to
project future CNEL noise levels.
Data on railroad operations were obtained from the North San Diego County Transit Development
Board. The railroad line is used for freight, Amtrak, and commuter train operations. The times, speeds,
and number of evening, night-time, and day-time train operations were used with the train noise model
to project future train noise levels for the different types of trains. Future train operations were
projected to include 24 commuter train operations, 28 Amtrak operations, and 4 freight train
operations (these are the projected operations for the year 2010).
The closest portion of the hotel site will be located approximately 260 feet from the centeriine of the
tracks. The results of the analysis indicate that the hotel will be exposed to worst case unmitigated
railway noise levels of approximately 64.8 CNEL. The country store would be expose to train noise as
high as 63.6 CNEL, and the restaurant exposed to 69.8 CNEL.
4.3 Combined Noise Exposure
The railroad runs along the west side of the project site, and the 1-5 runs along the east side of the
project site. Exhibit 2 provides the combined noise levels for all of the buildings on-site. Noise levels
in terms of CNEL are provided for each of the four sides of the buildings. The east side of the hotel
building will be the loudest and is exposed only to freeway noise. The north and south sides of the
SITE PLAN
is 0 K' 40' CO"
MESTRE GREVE ASSOCIATES
Exhibit 2
Noise Exposure (CNEL)
Cannon Court
Mestre Greve Associates
Page 6
hotel will be slightly quieter. These two sides are exposed to both the railroad and freeway noise,
however, the angle of view to both the freeway and railroad are limited, and therefore, the noise is
slightly less. The west side of the hotel is exposed only to the railroad, and in terms of the CNEL
noise scale is the quietest. Similar situations occur for the other two buildings.
5.0 EXTERIOR NOISE MITIGATION
The Cannon Court project consists of a hotel, country store, and a restaurant. The City of Carlsbad
does not have any exterior noise standards for these uses, and therefore, no mitigation for outdoor
areas is necessary.
6.0 INTERIOR NOISE MITIGATION
The residential rooms of the hotel must comply with the City of Carlsbad interior noise standard of 45
CNEL, and the country store and restaurants must meet an indoor standard of 55 CNEL. To meet the
interior noise standard, the buildings must provide sufficient outdoor to indoor building attenuation to
reduce the noise to acceptable levels. The outdoor to indoor noise reduction characteristics of a
building are determined by combining the transmission loss of each of the building elements which
make up the building. Each unique building element has a characteristic transmission loss. For
residential units, the critical building elements are the roof, walls, windows, doors, attic configuration
and insulation. The total noise reduction achieved 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. Room
absorption is the final factor used in determining the total noise reduction.
The most direct way of computing the total building noise reduction is through the use of the
methodology published by the Federal Highway Administration ("Insulation of Buildings Against
Highway Noise," FHWA TS 77-202). This methodology consists of a single number rating concept
weighted for a specific noise. This is similar to the more traditional Sound Transmission Class (STC)
rating except that it is specifically weighted to account for the frequency components of transportation
noise sources. The FHWA methodology incorporates the Exterior Wall Noise Rating scale (EWNR).
The FHWA has published EWNR data for the noise reduction characteristics of various building
elements and construction techniques. This data is based upon empirically derived data on
constmction materials and practices in use today. The following paragraphs specify the construction
details that were utilized in estimating the outdoor to indoor noise reduction.
The pertinent construction details were obtained from architectural plans provided by McArdle
Associates Architects and received in January and February 2000. The following is a summary of the
key building elements.
Hotel
1. Roofs are attic space constmctions and incorporate wood shingles on the exterior and
gypsum drywall on the interior surface of the living areas. Attic spaces are insulated
with fiberglass insulation, and roofs are sloped.
Exterior walls for the second and third floors are wood stud construction with
horizontal wood lap siding exteriors and minimum 1/2 inch gypsum drywall on the
interior. On the first floor the exterior is stone.
Cannon Court
Mestre Greve Associates
Page 7
3. Windows are assumed to be single glazed. The operable windows were estimated to
achieve a noise reduction rating of at least EWNR=22.
Building surfaces for the hotel will be exposed to worst case noise levels of 77.7 CNEL, and will
therefore require at least a 32.7 dB exterior to interior noise reduction in order to meet the 45 CNEL
interior noise standard. The exterior to interior noise reduction (EWNR) was calculated for a number
of units within the hotel (see Appendix IB for analysis data). Building upgrades are needed for a
number of rooms for the hotel. The building upgrades are summarized below and are detailed in
Exhibit 3 for first floor areas, Exhibit 4 for second floor areas, and Exhibit 5 for third floor areas. In
all cases the area of most concem is the east end of the building that faces the freeway.
First Floor (Exhibit 3)
1. Upgrade single window on side/comer room to EWNR rating of 28 (or STC rating of
31).
2. Upgrade windows on three units on east end to EWNR rating of 32 (or STC rating
35).
Second Floor (Exhibit 4)
1. Upgrade all windows on the three east end units and the side/comer unit to EWNR
rating of 32 (or STC rating of 35).
2. Upgrade all windows along north and south side of hotel to EWNR rating of 24 (or
STC rating of 26).
3. Attach second layer of gypsum board on inside of wall for the three end units. The
extra layer of gypsum board must be attached with resilient clips (RC-1 channels).
4. All attic vents should be baffled (see Exhibits 6 and 7).
Third Floor (Exhibit 5)
1. Upgrade window on side comer room to EWNR rating of 32 (or STC rating of 35).
2. Upgrade all windows along north and south side of hotel to EWNR rating of 24 (or
STC rating of 26).
3. Attach second layer of gypsum board on inside of wall for the side/comer unit. The
extra layer of gypsum board must be attached with resilient clips (RC-1 channels).
4. All attic vents should be baffled (see Exhibits 6 and 7).
Country Store
Building surfaces for the Country Store will be exposed to worst case noise levels of 75.8 CNEL, and
will therefore require at least a 20.5 dB exterior to interior noise reduction in order to meet the 55
CNEL interior noise standard. The exterior to interior noise reduction (EWNR) was calculated for the
worst case room in the Country Store (see Appendix IB for analysis data). The building will achieve
the Citv indoor noise standard without building upgrades. Key elements of the building are as follows.
1. Roofs are attic space constructions and incorporate wood shingles on the exterior and
gypsum drywall on the interior surface of the living areas. Attic spaces are insulated
with fiberglass insulation, and roofs are sloped.
1. Upgrade window to
EWNR of 28
(orSTCof31) _
2. Upgrade
window to
EWNR of 32
(or STC of 35
MESTRE GREVE ASSOCIATES
Exhibit 3
First Floor Building Upgrades
2. Upgrade all windows along
side of hotel to EWNR of 24
(or STC of 26)
U
1. Upgrade
window to
EWNR of 32
(or STC of 35)
3. Attach second layer of
gypsum board to walls
with resilient clips
2. Upgrade all windows
along side of hotel to EWNR
of 24
(or STC of 26)
4. Provide attic vent roof
baffles for all roof areas.
MESTRE GREVE ASSOCIATES
Exhibit 4
Second Floor Building Upgrades
2. Upgrade all windows along
side of hotel to EWNR of 24
(or STC of 26)
3. Attach second layer of
gypsum board to walls
with resilient clips
1. Upgrade
window to
EWNR of 32
(or STC of 35)
t 4. Provide attic vent roof
bafnes for all roof areas.
2. Upgrade all windows
along side of hotel to EWNR
of 24
(or STC of 26)
MESTRE GREVE ASSOCIATES
Exhibit 5
Third Floor Building Upgrades
Noise Insulating
Material
CROSS SECTION
(BOTH SIDES ARE ENCLOSED)
MESTRE GREVE ASSOCIATES
Exhibit 6
Example of Attic Vent Baffle (Gable)
18 inches
Ceiling Joist
2x4 Stmt
1" Thick Noise
Insulation Material
5/8" Gypsum Board
VIEW LOOKING
DOWN FROM
TOP OF VENT
Edge Of Vent Opening
2x4 Stmt
1" Thick Noise
Insulation Material
(e.g., Owens Corning
703 or 705
Compressed Fiberglas)
Mounted On 5/8"
Gypsum Board
Edge Of Noise
Insulation Material
(hidden behind roof)
MESTRE GREVE ASSOCIATES
Exhibit 7
Example of Attic Vent Baffle (Roof)
Cannon Court
Mestre Greve Associates
Pages
2. Exterior walls are wood stud constmction with horizontal wood lap siding exteriors
and minimum 1/2 inch gypsum drywall on the interior.
3. Windows are assumed to be single glazed. The operable windows were estimated to
achieve a noise reduction rating of at least EWNR=22.
Restaurant A
Building surfaces for the Restaurant A will be exposed to worst case noise levels of 76.2 CNEL, and
will therefore require at least a 21.2 dB exterior to interior noise reduction in order to meet the 55
CNEL interior noise standard. The exterior to interior noise reduction (EWNR) was calculated for the
worst case room in the Restaurant A (see Appendix IB for analysis data). The building will achieve
the City indoor noise standard without building upgrades. Key elements of the building are as follows.
1. Roofs are attic space constmctions and incorporate wood shingles on the exterior and
gypsum drywall on the interior surface of the living areas. Attic spaces are insulated
with fiberglass insulation, and roofs are sloped.
2. Exterior walls are wood stud constmction with horizontal wood lap siding exteriors
and minimum 1/2 inch gypsum drywall on the interior. The bottom 3 feet of the wall
has a stone exterior instead of wood sideing.
3. Windows are assumed to be single glazed. The operable windows were estimated to
achieve a noise reduction rating of at least EWNR=22.
Restaurant B
Building surfaces for the restaurant will be exposed to worst case noise levels of 70.8 CNEL, and will
therefore require on 15.8 dBA exterior to interior noise reduction in order to meet the 55 CNEL
interior noise standard. Calculations are only required when the exterior to interior noise reduction
required is greater than 20 dBA. No building upgrades will be required for the restaurant to meet the
interior noise standard.
Mechanical Ventilation
Since the noise attenuation of a building falls to about 12 dB with windows open, all buildings
exposed to noise levels greater than 57 CNEL will meet the 45 CNEL interior noise standard only with
windows closed. In order to assume that windows can remain closed to achieve this required
attenuation, adequate ventilation with windows closed must be provided per the Uniform Building
Code (1997 UBC Section 1207.1). This can be achieved with mechanical ventilation to provide fresh
air. The system must fresh make-up air obtained directly from the outside per the UBC. The fresh air
inlet duct shall be of sound attenuating construction and shall consist of a minimum of ten feet of
straight or curved duct, or six feet plus one sharp 90 degree bend. Air conditioning units may be an
adequate substitute for mechanical ventilation as long as they meet the ventilation requirements
specified in the Uniform Building Code. The acceptability of using air conditioners to meet the
mechanical ventilation requirement varies by municipality. The local jurisdiction and the mechanical
engineer for the project should be consulted. All buildings on the site are required to have mechanical
ventilation.
Cannon Court
Mestre Greve Associates
Page 9
APPENDIX lA
Train Measurement Data
Train Noise Measurements for Cannon Court
Measurements made on January 27, 2000
Measurements conducted from 6:15 a.m. until noon
Time SEL Lmax Used Hom? Type Direction Cars
6.19 86.3 79.9 Y Coaster SB 4
6.52 92.9 86.9 Y Coaster SB 4
7.00 94.0 90.1 Y Amtrak NB 4
7.24 92.4 87.7 Y Coaster SB 4
7.32 88.0 79.2 Y Coaster NB 4
7.54 95.9 90.8 Y Coaster SB 4
7.58 89.1 81.0 Y Amtrak NB 6
8.13 101.2 98.4 Y Amtrak SB 6
8.43 Missed measurement Y Coaster NB 5
8.53 92.8 87.5 Y Amtrak NB 5
10.14 94.4 89.4 Y Amtrak NB 7
10.38 100.4 96.8 Y Amtrak SB 7
10.40 97.6 89.0 Y Freight NB 57
11.08 Missed measurement Y Coaster SB 4
11.20 97.7 93.8 Y Amtrak NB 5
11.45 94.7 90.9 Y Amtrak SB 7
Cannon Court
Mestre Greve Associates
Page 10
APPENDIX IB
EVmR Calculation Sheets
EWNR Calcs
1st Floor
Cannon Court Hotel-No Mitigat on
!
Corner Room on End
BUiLDING ELEMENT AREA (ftA2) BWNR COMMENTS 10A(.EWNR/10)
Walls (2) 255 48 Stone veneer 0.004041478
Roof 285 70 room above 0.0000285
Windows (2) 85 22 basic window 0.536313743
TOTAL AREA (ft'^2) 625 0.54038372
10 Log S/A -1
TOTAL NOISE REDUCTION: 25.6
S.F. 1
FINAL NOISE REDUCTION 24.6
NOISE REDUCTION NEEDED 32.7
Corner Room on Side
BUILDING ELEMENT AREA (ftA2) EWNR COMMENTS 10A(.EWNR/10)
Walls (2) 257.5 48 Stone veneer 0.0040811
Roof 338 70 room above 0.0000338
Windows (1) 42.5 22 basic window 0.268156871
TOTAL AREA (ft'^2) 638 0.272271771
10 Log S/A -1
TOTAL NOISE REDUCTION: 28.7
S.F. 1
FINAL NOISE REDUCTION 27.7
NOISE REDUCTION NEEDED • 32.7
Side Room
BUILDING ELEMENT AREA (ft^2) EWNR COMMENTS lO-^C-EWNR/IO)
Walls (1) 105 48 Stone veneer 0.001664138
Roof 442 70 room above 0.0000442
Windows (1) 25 22 basic window 0.157739336
TOTAL AREA (ft'^2) 572 0.159447674
10 Log S/A -4
TOTAL NOISE REDUCTION: 33.5
S.F. 1
FINAL NOISE REDUCTION 32.5
NOISE REDUCTION NEEDED 29.9
EWNR Calcs
1st Floor
Cannon Court Hotel-Final Mitigation
Corner Room on End
BUILDING ELEMENT AREA (iX^2) BVNR COMMENTS '^(-EWNR/10)
Walls (2) 255 48 Stone veneer 0.00404148
Roof 285 70 room above 0.0000285
Windows (2) 85 32 high upgrade 0.05363137
TOTAL AREA (ft'^2) 625 0.05770135
10 Log S/A -1
TOTAL NOISE REDUCTION: 35.3
S.F. 1
FINAL NOISE REDUCTION 34.3
NOISE REDUCTION NEEDED 32.7
Corner Room on Side
BUILDING ELEMENT AREA (ft'^2) B/VNR COMMENTS A(-EWNR/10)
Walls (2) 257.5 48 Stone veneer 0.0040811
Roof 338 70 room above 0.0000338
Windows (1) 42.5 28 moderate upgrade 0.06735796
TOTAL AREA (ftA2) 638 0.07147286
10 Log S/A -1
TOTAL NOISE REDUCTION: 34.5
S.F. 1
FINAL NOISE REDUCTION 33.5
NOISE REDUCTION NEEDED * 32.7
Side Room
BUILDING ELEMENT AREA (ftA2) BA/NR COMMENTS '^(-EWNR/10)
Walls (1) 105 48 Stone veneer 0.00166414
Roof 442 70 room above 0.0000442
Windows (1) 25 22 basic window 0.15773934
TOTAL AREA (ft'^2) 572 0.15944767
10 Log S/A -4
TOTAL NOISE REDUCTION: 33.5
S.F. 1
FINAL NOISE REDUCTION 32.5
NOISE REDUCTION NEEDED 29.9
EWNR Calcs
2nd Floor
Cannon Court Hotel-No Mitigat on
Corner Room on End
BUILDING ELEMENT AREA {n^2) EWNR COMMENTS 10'^(-EWNR/10)
Walls (2) 300 31 Wood siding 0.23829847
Roof 285 34 attic space wood shingle 0.113460544
Windows (2) 40 22 basic window 0.252382938
TOTAL AREA {n^2) 625 0.604141952
10 Log S/A -1
TOTAL NOISE REDUCTION: 25.1
S.F. 1
RNAL NOISE REDUCTION 24.1
NOISE REDUCTION NEEDED 32.7
Corner Room on Side
BUILDING ELEMENT AREA (ftA2) EWNR COMMENTS 10'^(-EWNR/10)
Walls (2) 275 31 Wood siding 0.218440265
Roof 338 34 attic space wood shingle 0.134560224
Windows (1) 25 22 basic window 0.157739336
TOTAL AREA (ftA2) 638 0.510739824
10 Log S/A -1
TOTAL NOISE REDUCTION: 26.0
S.F. 1
FINAL NOISE REDUCTION 25.0
NOISE REDUCTION NEEDED • 32.7
Side Room
BUILDING ELEMENT AREA (ftA2) EWNR COMMENTS 10'^(-EWNR/10)
Walls (1) 105 31 Wood siding 0.083404465
Roof 442 60 Covered w/3rd Floor 0.000442
Windows (1) 25 22 basic window 0.157739336
TOTAL AREA (ft'^2) 572 0.241585801
10 Log S/A -4
TOTAL NOISE REDUCTION: 31.7
S.F. 1
FINAL NOISE REDUCTION 30.7
NOISE REDUCTION NEEDED 29.9
EWNR Calcs
2nd Floor
Cannon Court Hotel-Final Mitigation
Corner Room on End
BUILDING ELEMENT AREA (ftA2) BVNR COMMENTS A(.EWNR/10)
Walls (2) 300 42 Double Mass.resilient moi 0.01892872
Roof 285 39.5 with baffles 0.03197753
Windows (2) 40 32 double pane 0.02523829
TOTAL AREA {n^2) 625 0.07614454
10 Log S/A -1
TOTAL NOISE REDUCTION: 34.1
S.F. 1
RNAL NOISE REDUCTION 33.1
NOISE REDUCTION NEEDED 32.7
Corner Room on Side
BUILDING ELEMENT AREA (ftA2) Ewm COMMENTS A(-EWNR/10)
Walls (2) 275 42 Double Mass.resilient moi 0.01735133
Roof 338 39.5 with baffles 0.03792422
Windows (1) 25 32 high upgrade 0.01577393
TOTAL AREA (ftA2) 638 0.07104948
10 Log S/A -1
TOTAL NOISE REDUCTION: 34.5
S.R 1
RNAL NOISE REDUCTION 33.5
NOISE REDUCTION NEEDED • 32.7
Side Room
BUILDING ELEMENT AREA (ftA2) B/VNR COMMENTS A(-EWNR/10)
Walls (1) 105 31 Wood siding 0.08340446
Roof 442 60 Covered w/3rd Floor 0.000442
Windows (1) 25 24 slight upgrade 0.09952679
TOTAL AREA (ft'^2) 572 0.18337326
10 Log S/A -4
TOTAL NOISE REDUCTION: 32.9
S.R 1
RNAL NOISE REDUCTION 31.9
NOISE REDUCTION NEEDED 29.9
EWNR Calcs
Srd Floor
Cannon Court Hotel-No Mitigat on
Corner Room on End
BUIUDING ELEMENT AREA (ftA2) EWNR COMMENTS 10A(-EWNR/10)
Walls (2) 435 31 Wood siding 0.345532782
Roof 429 34 attic space wood shingle 0.170787976
Windows (2) 25 22 basic window 0.157739336
TOTAL AREA (n^2) 889 0.674060094
10 Log S/A -1
TOTAL NOISE REDUCTION: 26.2
S.R 1
RNAL NOISE REDUCTION 25.2
NOISE REDUCTION NEEDED 32.7
Side Room
BUILDING ELEMENT AREA (ftA2) EWNR COMMENTS 10'^(-EWNR/10)
Walls (1) 105 31 Wood siding 0.083404465
Roof 442 34 attic space wood shingle 0.175963369
Windows (1) 25 22 basic window 0.157739336
TOTAL AREA {iV'2) 572 0.41710717
10 Log S/A -4
TOTAL NOISE REDUCTION: 29.4
S.R 1
RNAL NOISE REDUCTION 28.4
NOISE REDUCTTON NEEDED • 29.9
EWNR Calcs
3rd Floor
Cannon Court Hotel-Final Mitigation
Corner Room on End
KJILDINGELEMETTT AREA (ftA2) EWNR COMMENTS A(-EWNR/10)
Walls (2) 435 42 Double Mass.resilient moi 0.02744664
Roof 429 39.5 with baffles 0.04813459
Windows (2) 25 32 high upgrade 0.01577393
TOTAL AREA ({1^2) 889 0.09135517
10 Log S/A -1
TOTAL NOISE REDUCTION: 34.9
S.R 1
RNAL NOISE REDUCTION 33.9
NOISE REDUCTION NEEDED 32.7
Side Room
BUILDING ELEMENT AREA (ftA2) EWNR COMMENTS A(-EWNR/10)
Walls (1) 105 31 Wood siding 0.08340446
Roof 442 39.5 with baffles 0.04959322
Windows (1) 25 24 slight upgrade 0.09952679
TOTAL AREA (n^2) 572 0.23252447
10 Log S/A -4
TOTAL NOISE REDUCTION: 31.9
S.R 1
RNAL NOISE REDUCTION 30.9
NOISE REDUCTION NEEDED • 29.9
EWNR Calcs
Country Store
Country Store-No M ligation
Country Store
BUILDING ELEMENT AREA (ftA2) COMMENTS 10'^(-EWNR/10)
Walls (2) 755 31 Wood siding 0.599717817
Roof 1760 34 attic space wood shingle 0.70066862
Windows (4) 135 22 basic window 0.851792415
Sectional Doors (3) 300 23 1.503561701
TOTAL AREA (ftA2) 2950 3.655740553
10 Log S/A 1
TOTAL NOISE REDUCTION: 22.1
S.R 1
RNAL NOISE REDUCTION 21.1
NOISE REDUCTION NEEDED 20.8
EWNR Calcs
Restaurant A
Restaurant A - No Ml Itlgation
Restaurant A
BUILDING ELEMENT AREA (ftA2) BA/NR COMMENTS 10A(-EWNR/10)
Wall - wood 544 31 Wood siding 0.43211456
Roof 792 34 attic space wood shingle 0.315300879
Windows 101 22 basic window 0.637266918
Wall - stone 258 48 Stone siding 0.004089024
TOTAL AREA (ftA2) 1695 1.388771381
10 Log S/A 1
TOTAL NOISE REDUCTION: 23.9
S.R 1
RNAL NOISE REDUCTION 22.9
fvlOlSE REDUCTION NEEDED 21.2