Roadway Traffic Noise and Vibration Assessment. The Bridge Wesleyan Church Addition. Ottawa, Ontario

Transcription

1 Roadway Traffic Noise and Vibration Assessment The Bridge Wesleyan Church Addition Ottawa, Ontario REPORT: GWE Traffic Noise and Vibration Prepared For: Alan McCafferty The Bridge Kanata Wesleyan Church 285 Didsbury Road Ottawa, Ontario K2T 1C4 Prepared By: Michel Lafortune, Environmental Technologist Joshua Foster, P.Eng., Associate November 3, Walgreen Road, Ottawa, Ontario K0A 1L0 T (613) F (613)

2 EXECUTIVE SUMMARY This document describes a roadway traffic noise and vibration assessment performed for a proposed addition to The Bridge Wesleyan Church in Ottawa, Ontario. The site is located north of Highway 417, between Terry Fox Drive, and Huntmar Drive. The major source of noise in the area is roadway traffic along Highway 417 to the south of the development. The site is surrounded on all sides with mixed-use land, primarily light industrial, commercial, and development reserve. Figure 1 illustrates a complete site plan with surrounding context. The assessment is based on: (i) theoretical noise prediction methods that conform to the Ministry of the Environment (MOE) and City of Ottawa requirements; (ii) noise level criteria as specified by the City of Ottawa s Environmental Noise Control Guidelines (ENCG); (iii) future vehicular traffic volumes based on the City of Ottawa s Official Plan roadway designations; and (iv) architectural drawings received from Barry J. Hobin Architects. The results of the current study indicate that noise levels will range between 51 and 71 dba during the daytime period (07:00-23:00) and between 44 and 63 dba during the nighttime period (23:00-07:00). The highest noise level (i.e. 71 dba) occurs along the south building façade, as it is the closest, and most exposed to Highway 417. Minimum building construction in all areas is required to satisfy the Ontario Building Code (2012). In addition, the east, south, and west building façades, where roadway traffic noise levels exceed 65 dba, will require upgraded building components as described in section 5.2 and illustrated on Figure 3. The addition will require a central air condition (or similar mechanical system) to allow doors and windows to remain closed to allow for a comfortable quiet indoor environment. Since the proposed development is for institutional use, no Warning Clauses are required. Ground vibrations from heavy vehicles were monitored over a two day period on October 17 and 27, 2014, using an Instantel model Mini Mate Plus seismograph. The largest recorded ground vibration from roadway vehicles (0.106 mm/s RMS [72 dbv]) was recorded at the corner of The Bridge Church parking lot, at a distance of 37 meters from the highway edge. Although vibration levels are expected to be marginally perceptible at this distance, along this segment of Highway 417, the closest point of reception is the south façade of the addition, at 47 m from the highway edge. Vibration levels and ground borne noise at the point of reception are well below the US FTA criteria for institutional buildings of mm/s RMS (83 dbv), and 48 dba respectively. The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment i

3 TABLE OF CONTENTS PAGE 1. INTRODUCTION 1 2. TERMS OF REFERENCE 1 3. OBJECTIVES 1 4. METHODOLOGY Background Roadway Traffic Noise Criteria for Roadway Traffic Noise Roadway Traffic Volumes Theoretical Roadway Noise Predictions Indoor Noise Calculations Ground Vibration & Ground-borne Noise Vibration Criteria Assessment Procedure 8 5. RESULTS AND DISCUSSION Roadway Noise Levels STC Requirements Ventilation Requirements Ground Vibration & Ground-borne Noise Levels CONCLUSIONS AND RECOMMENDATIONS 12 FIGURES APPENDICES: Appendix A STAMSON 5.04 Input and Output Data Appendix B Instantel Seismograph Histogram & Waveform Appendix C STC Calculations The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment ii

4 1. INTRODUCTION Gradient Wind Engineering Inc. (GWE) was retained by Barry J. Hobin & Associates Architects on behalf of The Bridge Kanata Wesleyan Church to undertake a roadway traffic noise and vibration study of a proposed addition to their place of worship in Ottawa, Ontario. This report summarizes the methodology, results, and recommendations related to a roadway traffic noise and ground vibration assessment. GWE s scope of work involved assessing exterior and interior noise levels, as well as ground vibration generated by local roadway traffic. The assessment was performed on the basis of theoretical noise calculation methods conforming to the City of Ottawa 1 and Ministry of the Environment 2 guidelines. Noise calculations were based on architectural drawings received from Barry J. Hobin & Associates Architects Incorporated, with future traffic volumes corresponding to the City of Ottawa s Official Plan (OP) roadway classifications. 2. TERMS OF REFERENCE The focus of this roadway traffic noise assessment is a proposed single-storey rectangular addition on the west side of the existing church. The site is located north of Highway 417 between Terry Fox Drive, and Huntmar Drive. The major source of noise in the area is roadway traffic along Highway 417 to the south of the development. The site is surrounded on all sides with mixed-use land, primarily commercial, light industrial, and development reserve. Figure 1 illustrates a complete site plan with surrounding context. 3. OBJECTIVES The main goals of this work are to: (i) calculate the future noise levels on the study building produced by local roadway traffic, (ii) calculate the future vibration levels on the study building produced by local roadway traffic, and (iii) ensure that interior noise levels and vibration levels do not exceed the allowable limits specified by the City of Ottawa s Environmental Noise Control Guidelines as outlined in Section 4.2 and 4.4 of this report. 1 City of Ottawa Environmental Noise Control Guidelines, SS Wilson Associates, May 10, Ministry of the Environment Publication NPC-300 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 1

5 4. METHODOLOGY 4.1 Background Noise can be defined as any obtrusive sound. It is created at a source, transmitted through a medium, such as air, and intercepted by a receiver. Noise may be characterized in terms of the power of the source or the sound pressure at a specific distance. While the power of a source is characteristic of that particular source, the sound pressure depends on the location of the receiver and the path that the noise takes to reach the receiver. Measurement of noise is based on the decibel unit, dba, which is a logarithmic ratio referenced to a standard noise level ( Pascals). The A suffix refers to a weighting scale, which better represents how the noise is perceived by the human ear. With this scale, a doubling of power results in a 3 dba increase in measured noise levels and is just perceptible to most people. An increase of 10 dba is often perceived to be twice as loud. 4.2 Roadway Traffic Noise Criteria for Roadway Traffic Noise For vehicle traffic, the equivalent sound energy level, L EQ, provides a measure of the time varying noise levels, which is well correlated with the annoyance of sound. It is defined as the continuous sound level, which has the same energy as a time varying noise level over a period of time. For roadways, the L EQ is commonly calculated on the basis of a 16-hour (L EQ16 ) daytime (07:00-23:00) / 8-hour (L EQ8 ) nighttime (23:00-07:00) split to assess its impact on residential buildings. The City of Ottawa s Environmental Noise Control Guidelines (ENCG) specifies that the recommended indoor noise limit range (that is relevant to this study) is 45 dba for schools, and conference rooms, as listed in Table 1. Based on GWE s experience, more comfortable indoor noise levels should be targeted toward 42 dba to control peak noise, and deficiencies in building envelope construction. The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 2

6 TABLE 1: INDOOR SOUND LEVEL LIMITS (ROAD & RAIL) 3 Type of Space Time Period Road L EQ (dba) Individual or semi-private offices 07:00 23: General offices 07:00 23: Living/dining/den areas of residences, hospitals, nursing homes, schools, daycare centres, conference rooms etc. Living/dining/den areas of residences, hospitals, nursing homes, etc. (except schools or daycare centres) Sleeping quarters Rail 07:00 23: :00 07: :00 23: :00 07: Predicted noise levels at the plane of window (POW) and outdoor living area (OLA) dictate the action required to achieve the recommended sound levels. When noise levels at these areas exceed the criteria outlined in Table 2, specific outdoor, ventilation and Warning Clause requirements may apply. In addition, when noise levels exceed the criteria outlined in Table 3, upgraded building components must be designed. 3 Adapted from ENCG Table 1.6 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 3

7 TABLE 2: ROAD & RAIL NOISE COMBINED OUTDOOR, VENTILATION AND WARNING CLAUSE REQUIREMENTS 4 Time Period L EQ (dba) Ventilation Requirements Outdoor Noise Control Measures Warning Clause Outdoor Living Area (OLA) L EQ(16hr) < 55 N/A Not required Not required Daytime (07:00 23:00) 55 < L EQ(16hr) 60 N/A L EQ(16hr) > 60 N/A May be applied to reduce the sound level to 55 dba Should be implemented to reduce the sound level to 55 dba Type A Type B Plane of Window (POW) L EQ(16hr) < 55 Not required N/A Not required Daytime (07:00 23:00) 55 < L EQ(16hr) 65 Forced air heating with provision for central air conditioning N/A Type C L EQ(16hr) > 65 Central air conditioning N/A Type D L EQ(8hr) < 50 Not required N/A Not required Nighttime (23:00 07:00) 50 < L EQ(8hr) 60 Forced air heating with provision for central air conditioning N/A Type C L EQ(8hr) > 60 Central air conditioning N/A Type D - If noise control measures are not provided - If it is not feasible for administrative, economic or technical reasons and the sound level does not exceed 60 dba TABLE 3: ROAD & RAIL NOISE BUILDING COMPONENT REQUIREMENTS 5 Source L EQ (dba) Building Component Requirements Road Rail L EQ(16hr) > 65 (Daytime) L EQ(8hr) > 60 (Nighttime) L EQ(16hr) > 60 (Daytime) L EQ(8hr) > 55(Nighttime) Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria 4 Adapted from ENCG Table Adapted from ENCG Table 1.8 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 4

8 4.2.2 Roadway Traffic Volumes The ENCG dictates that noise calculations should consider future sound levels based on a roadway s classification at the mature state of development. Therefore, traffic volumes are based on the roadway classifications outlined in the City of Ottawa s Official Plan 6 (OP) and Transportation Master Plan 7. Average Annual Daily Traffic (AADT) volumes are then based on the data in Table 1.7 in the ENCG for each roadway classification. Alternatively the MOE and common industry practice recommends using future traffic volumes projected to exist ten years into the future with an average annual growth rate of 2% per year. Table 4 (below) summarizes the AADT values used for each roadway included in this assessment. To ensure compliance with the reasonable worst case situation, the following steps were taken: Recent counted traffic data were acquired from the City of Ottawa and the Ministry of Transportation, upon which a growth rate of 2% per year was applied and extrapolated ten years into the future to the year of 2024 Traffic volumes based on roadway classification at mature state of development were obtained from Table 1.7 in the ENCG. The mature state of development taken as described in the Transpiration Master Plan Affordable 2031 Roadway Network 8. In all cases, the higher of the ENCG versus projected values were used to calculate future noise levels. Table 4 (below) summarizes the AADT values used for each roadway included in this assessment. TABLE 4: ROADWAY TRAFFIC DATA Roadway Roadway Class Speed Limit (km/h) ENCG AADT Available Traffic AADT From Count Year of Traffic AADT Projected 2024 AADT Highway Freeway ,333 / lane (110,000) 57, ,474 - Traffic volumes taken from Ministry of Transportation City of Ottawa Transportation Master Plan, November Reference 8, Table A3, Maps 6,7, 8,9, and 11 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 5

9 4.2.3 Theoretical Roadway Noise Predictions Noise predictions were performed with the aid of the Ministry of the Environment (MOE) computerized noise assessment program, STAMSON 5.04, for road and rail analysis. Appendix A includes the STAMSON 5.04 input and output data. Roadway noise calculations were performed by treating each road segment as separate line sources of noise, and by using existing building locations as noise barriers. In addition to the traffic volumes summarized in Table 4, theoretical noise predictions were based on the following parameters: Truck traffic on all roadways was taken to comprise 5% heavy trucks and 7% medium trucks, as per ENCG requirements for noise level predictions The day/night split was taken to be 92% / 8% respectively for all streets Absorptive and reflective intermediate ground surfaces based on specific source-receiver path ground characteristics The study site was treated as having flat topography Noise receptors were strategically placed at four receptor locations around the study building, representing the plane of window (see Figure 2). 4.3 Indoor Noise Calculations The difference between outdoor and indoor noise levels is the noise attenuation provided by the building envelope. According to common industry practice, complete walls and individual wall elements are rated according to the Sound Transmission Class (STC). The STC ratings of common residential walls built in conformance with the Ontario Building Code (2012) typically exceed STC 35, depending on exterior cladding, thickness and interior finish details. For example, brick veneered walls can achieve STC 55. Standard good quality double-glazed non-operable windows can have STC ratings ranging from 25 to 40 depending on the window manufacturer, pane thickness and inter-pane spacing. As previously mentioned, the windows are the known weak point in a partition. The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 6

10 According to ENCG, when daytime noise levels (from road and rail sources) at the plane of the window exceed 65 dba, calculations must be performed to evaluate the sound transmission quality of the building components to ensure acceptable indoor noise levels. The calculation procedure 9 considers: Window type and total area as a percentage of total room floor area Exterior wall type and total area as a percentage of the total room floor area Acoustic absorption characteristics of the room Outdoor noise source type and approach geometry Indoor sound level criteria, which varies according to the intended use of a space Based on published research, 10, 11 exterior walls possess specific sound attenuation characteristics that are used as a basis for calculating the required STC ratings of windows in the same partition. 4.4 Ground Vibration & Ground-borne Noise Transit systems and heavy vehicles on roadways can produce perceptible levels of ground vibrations, especially when they are in close proximity to residential neighbourhoods or vibration sensitive buildings. Similar to sound waves in air, vibrations in solids are generated at a source, propagated through the medium, and intercepted by a receiver. In the case of ground vibrations, the medium can be uniform, or more often, a complex layering of soils and rock strata. Also, similar to sound waves in air, ground vibrations produce perceptible motions and regenerated noise known as ground-borne noise when the vibrations encounter a hollow structure such as a building. Ground-borne noise and vibrations are generated when there is excitation of the ground, from a train for instance. Repetitive motion of the wheels on the track or rubber tires passing over an uneven surface causes vibrations to propagate through the soil. When they encounter a building, vibrations pass along the structure of the building beginning at the foundation and propagating to all floors. Air inside the building excited by the vibrating walls and floors represents regenerated airborne noise. Characteristics of the soil and the building are imparted to the noise, thereby creating a unique noise signature. 9 Building Practice Note: Controlling Sound Transmission into Buildings by J.D. Quirt, National Research Council of Canada, September CMHC, Road & Rail Noise: Effects on Housing 11 Bradley, J.S, Birta, J.A., Laboratory Measurements of the Sound Insulation of Building Façade Elements, NRC, October The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 7

11 Human response to ground vibrations is dependent on the magnitude of the vibrations, which is measured by the root mean square (RMS) of the movement of a particle on a surface. Typical units of ground vibration measures are millimeters per second (mm/s), or inch per second (in/s). Since vibrations can vary over a wide range, it is also convenient to represent them in decibel units, or dbv. In North America, it is common practice to use the reference value of one micro-inch per second (μin/s) to represent vibration levels for this purpose. The threshold level of human perception to vibrations is about 0.10 mm/s RMS or about 72 dbv. Although somewhat variable, the threshold of annoyance for continuous vibrations is (1.0 mm/s RMS or 92 dbv), ten times higher than the perception threshold, whereas the threshold for significant structural damage is (10 mm/s RMS or 112 dbv) at least one hundred times higher than the annoyance threshold level Vibration Criteria In the United States, the Federal Transportation Authority (FTA) has set vibration criteria for sensitive land use next to transit corridors. Similar standards have been developed by The International Standards Organization (ISO) 12. Therefore, the appropriate criteria for the addition to The Bridge Wesleyan Church is mm/s RMS (83 dbv) for vibrations and 48 dba for ground borne noise Assessment Procedure Existing levels of ground vibrations due to vehicle traffic were determined by field measurements using an Instantel model Mini Mate Plus seismograph capable of recording three components of ground velocity, one vertical and two horizontal. One measurement site was selected at the corner of the existing parking lot, near the development, as identified in Table 5. At the test location, the seismograph was installed approximately 37 m from the highway edge. Seismograph measurements were set to a minimum trigger level of 0.13 mm/s peak partial velocity (ppv). Figure 2 shows the vibration measurement location. 12 ISO, Evaluation of Human Exposure to Whole-Body Vibration, Part 2: Continuous and Shock-Induced Vibrations in Buildings (1-80 Hz) ISO , 1989 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 8

12 TABLE 5: VIBRATION MEASUREMENT LOCATIONS Receptor Location Description Land Use Placement of Seismographs from the Highway Edge (m) V1 Corner of The Bridge Church parking lot Institutional RESULTS AND DISCUSSION Outdoor noise levels are summarized in Section 5.1, STC and ventilation requirements are summarized in Section 5.2, and ground vibration & ground-borne noise levels are summarized in Section Roadway Noise Levels The results of the roadway noise calculations are summarized in Table 5 below. Appendix A contains the complete set of input and output data from all STAMSON 5.04 calculations. TABLE 5: EXTERIOR NOISE LEVELS DUE TO ROADWAY TRAFFIC Receptor Number Receptor Locations Noise Level (dba) Day Night R1 POW Ground level North façade R2 POW Ground level East façade R3 POW Ground level South façade R4 POW Ground level West façade The results of the current analysis indicate that noise levels will range between 51 and 71 dba during the daytime period (07:00-23:00) and between 44 and 63 dba during the nighttime period (23:00-07:00). The highest noise level (i.e. 71 dba) occurs on the south façade (Receptor 3), which is closest to Highway 417. The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 9

13 5.2 STC Requirements The noise levels due to roadway traffic are predicted to exceed the criteria listed in the ENCG for building components. As discussed in Section 4.3 the anticipated STC requirements for windows have been estimated based on the methodology developed by the National Research Council. Appendix C contains the complete set of calculations performed to verify the window STC requirements. All windows and exterior walls are to satisfy Ontario Building Code (OBC 2012). In addition the STC requirements for the windows are summarized below for various facades of the building (see Figure 3): (i) Windows facing south including corner windows will require a minimum STC of 31 (ii) Windows facing east or west on will require a minimum STC of 24 (iii) Windows facing north will require a minimum OBC Construction Exterior windows specified by the architect are expected to provide a minimum STC 45. A review of window supplier literature indicates that the specified STC ratings can be achieved by a variety of window systems having a combination of glass thickness and inter-pane spacing. We have not specified any particular window configurations, as there are several manufacturers and various combinations of window components that will offer the necessary sound attenuation rating. However, it is the responsibility of the manufacturer to ensure that the specified window achieves the required STC. This can only be assured by using window configurations that have been certified by laboratory testing. The requirements for STC ratings assume that the remaining components of the building are constructed and installed according to the minimum standards of the Ontario Building Code. The specified STC requirements also apply to swinging and/or sliding patio doors. 5.3 Ventilation Requirements Results of the roadway traffic noise calculations indicate the addition will require central air condition (or similar mechanical system) to allow doors and windows to remain closed to allow for a comfortable quiet indoor environment (see Figure 3). Since the proposed development is for institutional use, no Warning Clauses are required. The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 10

14 5.4 Ground Vibration & Ground-borne Noise Levels Vibration measurements were taken at one location, as shown in Figure 2. Results in Table 7 and Appendix B represent the upper range of the recorded measurements. Measured root mean square (RMS) vibration levels marginally exceed the level commonly considered perceptible by most building occupants of 72 dbv or equivalently 0.1 mm/s. Conversely, vibration levels are found to be negligible with respect to the risk of structural damages or even cosmetic damages to building finishes. At a distance of 37 m from the highway edge, vibration levels were measured up to mm/s RMS (72 dbv). The majority of heavy vehicles passing along this road are dump trucks, and transport trucks. Based on the measured vibration levels, vibrations from roadway traffic are expected to be moderately perceptible at a distance of 37 m from the highway edge. Along this segment of Highway 417, the closest point of reception is the south façade of the addition, at 47 m from the roadway. In all cases, the measured vibration levels fall below the US FTA criterion of (83 dbv) for institutional and office buildings. According to the United States Federal Transit Authority s vibration assessment protocol, ground borne noise can be estimated by subtracting 35 db from the velocity vibration level in dbv. Since measured vibration levels were found to be mm/s RMS (72 dbv), ground borne noise levels are also expected to be below the ground borne noise criteria. TABLE 7: VIBRATION MEASUREMENT RESULTS Event Receptor Location Description (dbv) Measured Vibration Level (RMS) (mm/s) Distance from the Highway Edge (m) V1 Corner of The Bridge Church parking lot The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment Page 11

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19 APPENDIX A STAMSON 5.04 INPUT AND OUTPUT DATA (ROADWAY TRAFFIC NOISE) The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 1

20 STAMSON 5.0 NORMAL REPORT Date: :38:32 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: R1.te Time Period: Day/Night 16/8 hours Description: North Façade Road data, segment # 1: 417EB (day/night) Car traffic volume : 44528/3872 veh/timeperiod * Medium truck volume : 3542/308 veh/timeperiod * Heavy truck volume : 2530/220 veh/timeperiod * Posted speed limit : 100 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): Percentage of Annual Growth : 0.00 Number of Years of Growth : 0.00 Medium Truck % of Total Volume : 7.00 Heavy Truck % of Total Volume : 5.00 Day (16 hrs) % of Total Volume : Data for Segment # 1: 417EB (day/night) Angle1 Angle2 : deg deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 2 (Flat/gentle slope; with barrier) Barrier angle1 : deg Angle2 : deg Barrier height : 5.40 m Barrier receiver distance : 1.00 / 1.00 m Source elevation : 0.00 m Receiver elevation : 0.00 m Barrier elevation : 0.00 m Reference angle : 0.00 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 2

21 Road data, segment # 2: 417WB (day/night) Car traffic volume : 44528/3872 veh/timeperiod * Medium truck volume : 3542/308 veh/timeperiod * Heavy truck volume : 2530/220 veh/timeperiod * Posted speed limit : 100 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): Percentage of Annual Growth : 0.00 Number of Years of Growth : 0.00 Medium Truck % of Total Volume : 7.00 Heavy Truck % of Total Volume : 5.00 Day (16 hrs) % of Total Volume : Data for Segment # 2: 417WB (day/night) Angle1 Angle2 : deg deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 2 (Flat/gentle slope; with barrier) Barrier angle1 : deg Angle2 : deg Barrier height : 5.40 m Barrier receiver distance : 1.00 / 1.00 m Source elevation : 0.00 m Receiver elevation : 0.00 m Barrier elevation : 0.00 m Reference angle : 0.00 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 3

22 Results segment # 1: 417EB (day) Source height = 1.50 m Barrier height for grazing incidence Source! Receiver! Barrier! Elevation of Height (m)! Height (m)! Height (m)! Barrier Top (m) ! 1.50! 1.50! 1.50 ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Results segment # 2: 417WB (day) Source height = 1.50 m Barrier height for grazing incidence Source! Receiver! Barrier! Elevation of Height (m)! Height (m)! Height (m)! Barrier Top (m) ! 1.50! 1.50! 1.50 ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 4

23 Results segment # 1: 417EB (night) Source height = 1.50 m Barrier height for grazing incidence Source! Receiver! Barrier! Elevation of Height (m)! Height (m)! Height (m)! Barrier Top (m) ! 1.50! 1.50! 1.50 ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Results segment # 2: 417WB (night) Source height = 1.50 m Barrier height for grazing incidence Source! Receiver! Barrier! Elevation of Height (m)! Height (m)! Height (m)! Barrier Top (m) ! 1.50! 1.50! 1.50 ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba TOTAL Leq FROM ALL SOURCES (DAY): (NIGHT): The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 5

24 STAMSON 5.0 NORMAL REPORT Date: :38:59 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: r2.te Time Period: Day/Night 16/8 hours Description: East Façade Road data, segment # 1: 417EB (day/night) Car traffic volume : 44528/3872 veh/timeperiod * Medium truck volume : 3542/308 veh/timeperiod * Heavy truck volume : 2530/220 veh/timeperiod * Posted speed limit : 100 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): Percentage of Annual Growth : 0.00 Number of Years of Growth : 0.00 Medium Truck % of Total Volume : 7.00 Heavy Truck % of Total Volume : 5.00 Day (16 hrs) % of Total Volume : Data for Segment # 1: 417EB (day/night) Angle1 Angle2 : deg 0.00 deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 6

25 Road data, segment # 2: 417WB (day/night) Car traffic volume : 44528/3872 veh/timeperiod * Medium truck volume : 3542/308 veh/timeperiod * Heavy truck volume : 2530/220 veh/timeperiod * Posted speed limit : 100 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): Percentage of Annual Growth : 0.00 Number of Years of Growth : 0.00 Medium Truck % of Total Volume : 7.00 Heavy Truck % of Total Volume : 5.00 Day (16 hrs) % of Total Volume : Data for Segment # 2: 417WB (day/night) Angle1 Angle2 : deg 0.00 deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 7

26 Results segment # 1: 417EB (day) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Results segment # 2: 417WB (day) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 8

27 Results segment # 1: 417EB (night) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Results segment # 2: 417WB (night) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba TOTAL Leq FROM ALL SOURCES (DAY): (NIGHT): The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 9

28 STAMSON 5.0 NORMAL REPORT Date: :39:37 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: r3.te Time Period: Day/Night 16/8 hours Description: South Façade Road data, segment # 1: 417EB (day/night) Car traffic volume : 44528/3872 veh/timeperiod * Medium truck volume : 3542/308 veh/timeperiod * Heavy truck volume : 2530/220 veh/timeperiod * Posted speed limit : 100 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): Percentage of Annual Growth : 0.00 Number of Years of Growth : 0.00 Medium Truck % of Total Volume : 7.00 Heavy Truck % of Total Volume : 5.00 Day (16 hrs) % of Total Volume : Data for Segment # 1: 417EB (day/night) Angle1 Angle2 : deg deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 10

29 Road data, segment # 2: 417WB (day/night) Car traffic volume : 44528/3872 veh/timeperiod * Medium truck volume : 3542/308 veh/timeperiod * Heavy truck volume : 2530/220 veh/timeperiod * Posted speed limit : 100 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): Percentage of Annual Growth : 0.00 Number of Years of Growth : 0.00 Medium Truck % of Total Volume : 7.00 Heavy Truck % of Total Volume : 5.00 Day (16 hrs) % of Total Volume : Data for Segment # 2: 417WB (day/night) Angle1 Angle2 : deg deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 11

30 Results segment # 1: 417EB (day) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Results segment # 2: 417WB (day) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 12

31 Results segment # 1: 417EB (night) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Results segment # 2: 417WB (night) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba TOTAL Leq FROM ALL SOURCES (DAY): (NIGHT): The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 13

32 STAMSON 5.0 NORMAL REPORT Date: :40:50 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: r4.te Time Period: Day/Night 16/8 hours Description: West Façade Road data, segment # 1: 417EB (day/night) Car traffic volume : 44528/3872 veh/timeperiod * Medium truck volume : 3542/308 veh/timeperiod * Heavy truck volume : 2530/220 veh/timeperiod * Posted speed limit : 100 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): Percentage of Annual Growth : 0.00 Number of Years of Growth : 0.00 Medium Truck % of Total Volume : 7.00 Heavy Truck % of Total Volume : 5.00 Day (16 hrs) % of Total Volume : Data for Segment # 1: 417EB (day/night) Angle1 Angle2 : 0.00 deg deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 14

33 Road data, segment # 2: 417WB (day/night) Car traffic volume : 44528/3872 veh/timeperiod * Medium truck volume : 3542/308 veh/timeperiod * Heavy truck volume : 2530/220 veh/timeperiod * Posted speed limit : 100 km/h Road gradient : 0 % Road pavement : 1 (Typical asphalt or concrete) * Refers to calculated road volumes based on the following input: 24 hr Traffic Volume (AADT or SADT): Percentage of Annual Growth : 0.00 Number of Years of Growth : 0.00 Medium Truck % of Total Volume : 7.00 Heavy Truck % of Total Volume : 5.00 Day (16 hrs) % of Total Volume : Data for Segment # 2: 417WB (day/night) Angle1 Angle2 : 0.00 deg deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 1 (Absorptive ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 15

34 Results segment # 1: 417EB (day) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Results segment # 2: 417WB (day) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 16

35 Results segment # 1: 417EB (night) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Results segment # 2: 417WB (night) Source height = 1.50 m ROAD ( ) = dba Angle1 Angle2 Alpha RefLeq P.Adj D.Adj F.Adj W.Adj H.Adj B.Adj SubLeq Segment Leq : dba Total Leq All Segments: dba TOTAL Leq FROM ALL SOURCES (DAY): (NIGHT): The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment A 17

36 APPENDIX B Instantel Seismograph Histogram & Waveform The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment B 1

37 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment B 2

38 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment B 3

39 APPENDIX C STC Calculations The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment C 1

40 UNIT 4 LIVING/DINING NORTH REQUIRED STC Outdoor Sound Level = 71 dba Source Geometry Correction: = 0 dba Correction For Surface Reflection: = 3 dba Target Indoor Noise Level: = 42 dba Required Noise Reduction: = 32 dba COMPONENT: Wall STC Is: 45 Noise Spectrum Type D Correction: Component Category d 7 dba Room Floor Area: 67 m² Component Area: 27 m² Correction: Component / Floor (%): 40 % Room Absorption Category: Intermediate 3 dba Noise Reduction If Only This Component Transmits Sound Energy: 41 dba Component Transmits 13 % Of Sound Required Noise Reduction: 32 dba COMPONENT: Window Required Noise Reduction Is: 32 dba Percentage Of Sound Energy Transmitted: 87 % Room Floor Area: 67 m² Correction: 1 Component Area: 14 m² Component / Floor (%): 21 % Room Absorption Category: Intermediate Correction: 6 dba Noise Spectrum Component Category D c Correction: 4 dba Required STC Is: 31 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment C 2

41 UNIT 4 LIVING/DINING WEST REQUIRED STC Outdoor Sound Level = 67 dba Source Geometry Correction: = 0 dba Correction For Surface Reflection: = 3 dba Target Indoor Noise Level: = 42 dba Required Noise Reduction: = 28 dba COMPONENT: Wall STC Is: 45 Noise Spectrum Type D Correction: Component Category d 7 dba Room Floor Area: 67 m² Component Area: 12.6 m² Correction: Component / Floor (%): 19 % Room Absorption Category: Intermediate 6 dba Noise Reduction If Only This Component Transmits Sound Energy: 44 dba Component Transmits 2 % Of Sound Required Noise Reduction: 28 dba COMPONENT: Window Required Noise Reduction Is: 28 dba Percentage Of Sound Energy Transmitted: 98 % Room Floor Area: 67 m² Correction: 0 Component Area: 9.3 m² Component / Floor (%): 14 % Room Absorption Category: Intermediate Correction: 8 dba Noise Spectrum Component Category D c Correction: 4 dba Required STC Is: 24 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment C 3

42 UNIT 2 LIVING/DINING WEST REQUIRED STC Outdoor Sound Level = 67 dba Source Geometry Correction: = 0 dba Correction For Surface Reflection: = 3 dba Target Indoor Noise Level: = 42 dba Required Noise Reduction: = 28 dba COMPONENT: Wall STC Is: 45 Noise Spectrum Type D Correction: Component Category d 7 dba Room Floor Area: m² Component Area: 38.2 m² Correction: Component / Floor (%): 34 % Room Absorption Category: Intermediate 4 dba Noise Reduction If Only This Component Transmits Sound Energy: 42 dba Component Transmits 4 % Of Sound Required Noise Reduction: 28 dba COMPONENT: Window Required Noise Reduction Is: 28 dba Percentage Of Sound Energy Transmitted: 96 % Room Floor Area: m² Correction: 0 Component Area: 14.4 m² Component / Floor (%): 13 % Room Absorption Category: Intermediate Correction: 8 dba Noise Spectrum Component Category D c Correction: 4 dba Required STC Is: 24 The Bridge Wesleyan Church Addition: Roadway Traffic Noise and Vibration Assessment C 4