Noise Control Feasibility Study 173 / 175 / 177 Preston Street Ottawa, Ontario

Transcription

1 Noise Control Feasibility Study 173 / 175 / 177 Preston Street Ottawa, Ontario Type of Document Site Plan Application Client 1536 Prince of Wales Drive, Ottawa, Ontario K2C 1P1 Project Number Prepared By: M.F. Duthilleul, P.Eng. Reviewed By: J. Fitzpatrick, P.Eng. exp Services Inc Queensview Drive Ottawa, ON K2B 8H6 Date Submitted March 25, 2014 Revised

2 exp Services Inc. 173 / 175 / 177 Preston Street, Ottawa, ON Noise Control Feasibility Study Type of Document: Site Plan Application Project Name: 173 Preston Street Project Number: Prepared By: exp Queensview Drive Ottawa, ON K2B 8H6 Canada T: F: Marie-France Duthilleul, P.Eng. Project Manager Infrastructure Services Date Submitted: March 25, 2014 Revised Jason Fitzpatrick, P.Eng. Project Engineer Infrastructure Services

3 173 / 175 / 177 Preston Street, Ottawa, ON Legal Notification This report was prepared by exp Services Inc. for the account of Any use which a third party makes of this report, or any reliance on or decisions to be made based on it, are the responsibility of such third parties. Exp Services Inc. accepts no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this project.

4 Table of Contents Page Introduction References... 1 Sound Level Criteria... 2 Noise Sources Traffic Noise Aircraft/Airport Noise Stationary Noise... 6 Noise Prediction Procedures... 7 Summary of Results... 8 Indoor Noise Control Measures... 8 Mitigation Measures Recommendations i

5 List of Appendices Appendix A Figures Appendix B STAMSON Output List of Tables Page Table 2-1: MOE and City of Ottawa Indoor and Outdoor Criteria for Noise From Traffic... 2 Table 2-2: Outdoor, Ventilation & Warning Clause Requirements Road Noise, Daytime ( )... 3 Table 2-3: Ventilation and Warning Clause Requirements Road Noise, Nighttime ( )... 3 Table 2-4: Building Component Requirements Road Noise, Daytime ( )... 4 Table 2-5: Building Component Requirements Road Noise, Nighttime ( )... 4 Table 2-6: Warning Clauses...5 Table 3-1: Traffic and Road Parameters...6 Table 5-1: Summary of Noise Levels...8 Table 6-1: AIF Values and Typical Building Treatments for Road Traffic Sound Levels... 9 Table 7-1: Summary of Requirements based on Receiver Location...10 Table 7-2: Summary of Noise Abatement Requirements per Apartment...10 List of Figures Page Site Location Plan... Appendix A Noise Source / Receiver Locations... Appendix A Architectural Plans... Appendix A ii

6 1 Introduction retained exp Services Inc. to undertake a noise control feasibility study in support of a site plan application for a proposed redevelopment project at 173 / 175 / 177 Preston Street in the City of Ottawa, Ontario. Refer the site location plan in Appendix A. Preston Street is classified as an arterial road and runs between Sir John A MacDonald Parkway and Queen Elizabeth Drive. Per the City s Official Plan, it has a right-of-way (ROW) protection of 23.0 meters. It is zoned as Traditional Main Street, referred to as Little Italy, a compact mixed-use development area, pedestrian-oriented having residential homes, small business and restaurants. This study was carried out in accordance with the Ontario Ministry of the Environment (MOE) and the City of Ottawa s Environmental Noise Control Guidelines (2006). The findings of the study will address noise level, and recommend if noise abatement measures are necessary to bring noise levels to acceptable levels. This noise impact study is prepared to address the following requirements as identified in the City of Ottawa s Noise Control Guidelines, and Section of the City s Official Plan: Where a new development is proposed within 100m from the right-of-way of an existing or proposed road arterial, major collector or bus Transit way, 250m of an existing or proposed highway, light rail transit corridor or a secondary main railway line, or 500m from the right-of-wayof a freeway or 400-series provincial highway or a Principal Main rail line, the City will require a noise study to be prepared. 1.1 References A summary of the documents that were referenced during the preparation of this report include the following: Building Practice Note (BPN 56), Controlling Sound Transmission into Buildings, National Research Council Canada, dated Sept City of Ottawa Environmental Noise Control Guidelines, May 10, City of Ottawa Transportation Master Plan, Nov 2013 Ontario MOE publication LU-131, Noise Assessment Criteria in Land Use Planning, and accompanying Annex, dated October

7 2 Sound Level Criteria The requirements outlined per the Ministry of Environment (MOE) and the City of Ottawa Guidelines, both have indoor and outdoor sound level limitations generated from road traffic, a summary is provided in Table 2-1. Table 2-1: MOE and City of Ottawa Indoor and Outdoor Criteria for Noise From Traffic Location, Space and Time Period Indoors Sleeping quarters of residences, hospitals, schools, nursing / retirement homes, daycare centers, etc. (Night-time 23:00 to 07:00) Equivalent Level Leq (dba) 40 Sleeping quarters of hotels/motels (Night-time 23:00 to 07:00) 45 Living / Dining areas of residences, hospitals schools, nursing/retirement homes, daycare centers, theatre, places of worship, libraries, individual or semi-private offices, conference rooms, reading rooms. (Daytime 07:00 to 23:00) General offices, reception areas, retail stores, etc. (Daytime 07:00 to 23:00) Outdoors Outdoor Living Areas (Daytime 07:00 to 23:00) The basic physical measurement of noise used in this report is the A-weighted sound level measured in dba, which is an overall measurement of sound over a full range of frequencies. Because noise from roadway traffic fluctuates over the audible range of hearing, it is convenient to describe noise in terms of an equivalent 24-hour sound level (denoted as Leq). MOE Guidelines require that traffic noise be evaluated in relation to specific locations during certain time periods. In general, noise levels are predicted for outdoor living areas (generally the backyard of a residential home) during the day and for indoor areas (living areas during the day and bedrooms on the second floor) during the night-time. A summary of these requirements are shown in Tables 2-2 through

8 Table 2-2: Outdoor, Ventilation & Warning Clause Requirements Road Noise, Daytime ( ) Assessment Location Outdoor Living Area (OLA) Plane of Living Room Window L eq (16hr) dba Less than or equal to 55 Greater than 55 less than or equal to 60 Greater than 60 Greater than 50 less than or equal to 55 Greater than 55 less than or equal to 65 Greater than 65 Ventilation Requirements Outdoor Control Measures Warning Clause N/A None required Not required N/A N/A Control measures / barriers not required but could be considered Control measures / barriers required to reduce below 60 dba, as close to 55 dba as technically, economically and administratively feasible Type A Type B None required N/A Not required Forced air heating with central air conditioning provision Central air conditioning N/A N/A Type C Type D Table 2-3: Ventilation and Warning Clause Requirements Road Noise, Nighttime ( ) Assessment Location L eq (8 hr) (dba) Ventilation Requirements Warning Clause Plane of Bedroom Window Greater than 50 less or equal to 60 Forced air heating, central air conditioning provision Type C Greater than 60 Central Air Conditioning Type D 3

9 Table 2-4: Building Component Requirements Road Noise, Daytime ( ) Assessment Location Noise Source L eq (16 hr) dba Warning Clause Notice Plane of Living Room Window Road Less than or equal to 65 Greater than 65 Building compliant with Ontario Building Code Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria Table 2-5: Building Component Requirements Road Noise, Nighttime ( ) Assessment Location Noise Source L eq (8 hr) dba Warning Clause Notice Plane of Bedroom Window Road Less than or equal to 60 Greater than 60 Building compliant with Ontario Building Code Building components (walls, windows, etc.) must be designed to achieve indoor sound level criteria The warning clauses referred to above are contained in Table 2-6 below. Ministry of the Environment Warning clauses and City of Ottawa specific warning clauses (red italics) are shown. Where applicable, these clauses are to be inserted on all Offers/Agreements of Purchase and Sale or Leases to notify potential purchasers and tenants of these environmental concerns. Results from the noise prediction modeled for the Plane of the Window (POW) during the daytime and nighttime were used to determine the required building component improvements. Indoor sound levels can be significantly decreased depending on the architectural building materials used for the: walls, windows, and or doors etc. 4

10 Table 2-6: Warning Clauses Warning Clause A B C D E Purchasers/Tenants are advised that sound levels due to increasing road traffic may occasionally interfere with some activities of the dwelling occupants as the sound levels exceed the Municipality s and the MOE s noise criteria. Purchasers/Tenants are advised that sound levels due to increasing (road) (Transitway) (rail) (air) traffic may occasionally interfere with some activities of the dwelling occupants as the sound levels exceed the City s and the MOE s noise criteria. Purchasers/Tenants are advised that despite the inclusion of noise control features in the development and within the building units, sound levels due to increasing road traffic may on occasions interfere with some activities of the dwelling occupants as the sound levels exceed the Municipality s and the MOE s noise criteria. Purchasers/Tenants are advised that despite the inclusion of noise control features in the development and within the building units, sound levels due to increasing (road) (Transitway) (rail) (air) traffic may on occasions interfere with some activities of the dwelling occupants as the sound levels exceed the City s and the MOE s noise criteria. This dwelling unit has been fitted with a forced air heating system and the ducting etc. was sized to accommodate central air-conditioning. Installation of central air-conditioning by the occupant will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the Municipality s and the Ministry of Environment s noise criteria. (Note: The location and installation of the outdoor air-conditioning device should be done as to comply with the noise criteria of MOE Publication NPC-216, Residential Air Conditioning Devices and thus minimize the noise impacts on and in the immediate vicinity of the subject property. This dwelling unit has been fitted with a forced air heating system and the ducting etc. was sized to accommodate central air-conditioning. Installation of central air-conditioning by the occupant will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the City s and the MOE s noise criteria. (Note: The location and installation of the outdoor airconditioning device should be done as to comply with the noise criteria of MOE Publication NPC-216, Residential Air Conditioning Devices and thus minimize the noise impacts on and in the immediate vicinity of the subject property. This dwelling unit has been supplied with a central air-conditioning system which will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the Municipality s and the MOE s noise criteria. This dwelling unit has been supplied with a central air-conditioning system which will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the City s and the MOE s noise criteria. Purchaser/tenants are advised that due to the proximity of the adjacent industry (facility) (utility), sound levels from the industry (facility) (utility) may at times be audible 5

11 3 Noise Sources The following noise sources are located with 500meters of the site: Preston Street 12 m Booth Street 300 m Somerset St. West- 182 m LRT Corridor 300 m Queen Elizabeth Driveway (Hwy 417) 470 m As a result the site is located within 100 meters from the right-of-way of Preston Street which is an existing urban arterial roadway. The LRT is over 250 meters away. Therefore this area was not studied. Highway 417 is within 500m. It was observed that the portion of the highway that crosses over Preston Street has an existing noise barrier. Therefore, both Preston Street and Highway 417 were modelled as potential noise sources. Refer Appendix A and Appendix B. 3.1 Traffic Noise Traffic volumes were obtained using existing roadway information and the City s Noise Control Guidelines. Refer to the traffic and road parameters summarized in Table 3-1. Table 3-1: Traffic and Road Parameters Traffic Parameters Preston Street Hwy 417 R.O.W. WIDTH (m) N/A Roadway Type 2-Lane Urban Arterial (2-UAU) 6-Lane 400-series provincial highway A.A.D.T. (veh/day) 15,000 18,333 per lane Day/night split (%) 92 / 8 92 / 8 16hr Daytime (veh/t) 12,144 89,054 8hr Nighttime (veh/t) 1,056 7,744 Medium trucks (%) 7 7 Heavy trucks (%) 5 5 Posted Speed Limit 50 mph 100 mph 3.2 Aircraft/Airport Noise The site is located inside the Airport Vicinity Development Zone and outside the Airport Operating Influence Zone as per Schedule K of the Ottawa Official Plan. The site is outside both the 25 NEF and NEP contours; therefore noise from air traffic does not impact this site and will not be examined in this report. 3.3 Stationary Noise Typically industrial land uses can be a potential stationary noise source. For the proposed development, a review of the potential industrial noise sources that could be generated by neighboring properties was 6

12 conducted. Based on the information reviewed it was determined that there were no stationary noise sources. 4 Noise Prediction Procedures Predicted noise levels were modelled using MOE s methodology and software: STAMSON Version 5.03 (1999), based on the Ontario Road Noise Analysis Method for Environment and Transportation ORNAMENT Model. Refer to the detailed output files in Appendix D. The following traffic parameters were used: The Day/Night split used for roadways and freeways was 92% and 8%. Truck traffic on all streets and roadways consists of 5% heavy trucks, 7% medium trucks. Topography was assessed as flat/gentle slope. Road pavement and road gradient was assessed as typical asphalt or concrete and flat grade. Noise levels were assessed at the building façade in order to determine indoor sound level. Intermediate surfaces between the source and receiver locations were assessed as a reflective ground surface. To ensure ground absorption was not applied to the predicted results; all noise sources were assumed to have a reflective surface. As a result the elevation of the receiver is irrelevant with projected sound levels being the same for all floors. This is a conservative assumption which simplifies the prediction of sound levels on all floors. In general sound levels are assessed for: 1) Outdoor Living Areas (OLA) or amenity spaces, greater than 3 meters in depth, during the daytime; 2) Indoor living/dining room areas also during the daytime; and 3) Bedroom areas during the nighttime. Noise levels are predicted for the building façade at the Plane of the Window (POW) for a particular time period, either daytime or nighttime. Resulting levels help determine the recommended building treatments to lower the indoor sound levels to acceptable levels. Building mitigation is obtained by the application of building architectural components (walls, windows and doors etc.). The 16-hour daytime and 8-hour nighttime sound levels were modelled at two (2) locations around the proposed building. There are no proposed outdoor living amenity areas. The following areas were assessed: Façade at the front of the building living/dining areas during the day Building side façade bedrooms during the nighttime. STAMSON file names were denoted based on the receiver location and noise levels from Preston Street. Refer to architectural plans and site s receiver location plan in Appendix A. 7

13 5 Summary of Results Predicted noise levels for assessed locations summarized below in Tables 5-1. Table 5-1: Summary of Noise Levels Receiver No. R1 R2 Location Front façade at living/dining window Side façade at bedroom Distance to Road C/L (m) Default 15.0 Combined Equivalent Noise Level, Leq (dba) Daytime (7:00 23:00) Nighttime (23:00 7:00) Notes: 1. The minimum distance that can be inserted into the STAMSON is 15.0 m. The actual Leq noise levels were adjusted using the following equation taken from the Ornament - technical document (1989). Input a = 0 (Reflective Surface) D ref = 15.0m D = Calculation Ad=10*(1+0)*log(15.0/12.23) Ad = 0.88 dba L Day = = dba L Night = = dba Equation L eq = L ref + Ad Ad = 10(1+a) log (D ref /D) Where; L ref is the reference sound level Ad is the distance adjustment 6 Indoor Noise Control Measures Outdoor noise level caused by traffic along Preston Street requires that the building be constructed with acoustic components, to achieve the acceptable indoor sound level. The Acoustic Insulation Factor (AIF) method was used to determine the minimum required building components: AIF = L eq outdoor façade L eq indoor + 10 log C + 2 Where Leq outdoor façade = Outdoor façade sound level Leq indoor = Indoor objective sound level C = Number of building components forming envelope of room (typically equals 3 for a corner room and 2 for other rooms) Table 6-1 outlines the AIF required for various road traffic sound levels as well as the glazing requirements to meet MOE guidelines. 8

14 Table 6-1: AIF Values and Typical Building Treatments for Road Traffic Sound Levels Daytime Façade Sound Level (dba) Nighttime Façade Sound Level (dba) Air Conditioning Requirement AIF Required Window Treatments Wall Treatments 55 or less 50 or less None 17 or less None (OBC) None (EW1) 56 to to 60 Provisions 18 to 27 None (OBC) None (EW1) 66 to to 63 Required 28 to 30 None (OBC) None (EW1) 69 to to 65 Required 31 to 32 STC 31 to 32 None (EW1) 71 to to 67 Required 33 to 34 STC 33 to 34 EW2 73 to to 73 Required 35 to 40 STC 35 to 40 EW Required 41 STC 41 EW1R / EW5 Notes: 1. Source: Road and Rail Noise: Effects on Housing, NHA 5156, 08/86 CMHC, Building treatments are based upon an assumed window/floor ratio of 25%, and wall/floor ratio of 80%. 3. AIF is based on 3 components (ie corner room location. For 2 components (i.e. only one exterior wall) AIF would be 2 points lower. 4. OBC window: Requires Ontario Building Code compliant construction. 5. EW1 denotes a typical metal or vinyl clad siding exterior wall EW1R denotes an EW1 exterior wall with interior drywall mounted on resilient channels EW2 denotes an EW1 exterior wall with an additional 25mm of rigid insulation EW4 denotes a typical 20mm stucco clad exterior wall EW5 denotes a typical brick veneer clad exterior wall In reference to the prediction results shown in Table 5-1 compared to the required values in Table 6-1 an AIF of 31 to 32 for the daytime façade sound levels and 28 to 30 the nighttime façade sound levels. Refer to Table 7-1 for recommended building components. Table 6-1 and general notes are recommended guidelines; a qualified acoustic consultant must verify the building s components and certify that construction is adequate. 9

15 7 Mitigation Measures Table 7-1 summarizes the proposed building ventilation and building component requirements. Table 7-1: Summary of Requirements based on Receiver Location Receiver Ventilation Requirements Plane of Living Room Windows (Daytime) Plane of Bedroom Windows (Nighttime) *Building Component Requirements Plane of Living Plane of Room Windows Bedroom Windows (Daytime) (Nighttime) R1 Type D Type D Required Required R2 Type D Type D Required Required *Note: OBC denote Ontario Building Code requirements: Required = Building components must be designed to achieve indoor sound levels criteria, or Compliant = Building compliant with Ontario Building Code. The proposed building designs include provisions for central air condition and the exterior front wall being composed of brick and stone; therefore satisfying the requirements. Table 7-2: Summary of Noise Abatement Requirements per Apartment Apartment Ventilation Requirement Warning Clause Building Component Requirement 1 Type D Required 2 Type D Required 3 TypeD Required 10

16 8 Recommendations It is recommend that the proposed development at 173 Preston Street be approved based on the following noise control requirements: For all Units It is recommended that a qualified acoustic consultant verify the building plans and certify that construction will be adequate in this regards. All proposed residential units have central air conditioning for ventilation with a Type D Warning Clause. The living/dining room window shall be designed to reduce indoor noise to an acceptable level. The following Notices on Title for the residential units shall be included in all Agreements of Purchase and Sale in accordance with the terms specified by the Development Agreement: Type D Warning Clause This dwelling unit has been supplied with a central air-conditioning system which will allow windows and exterior doors to remain closed, thereby ensuring that the indoor sound levels are within the City s and the Ministry of the Environment s noise criteria. The Transferee covenants with the Transfer or that the above clause, verbatim, shall be included in all subsequent agreements of Purchase and sale and deeds conveying the lands described herein, which covenant shall run with the said lands and is for the benefit of subsequent owners of the said lands and the owner of the adjacent road. 11

17 Appendix A Figures

18 Filename: p:\projects\civil engineering services\216000\ott a preston street - padom holdings\d - drawings\sketches and figures\ noise study fig 1 and fig2.dwg Last Plotted: 3/5/2015 3:39:02 PM Plotted by: duthilleulm References: xref-keyplan.dwg exp Services Inc. t: f: Queensview Drive, Unit 100 Ottawa, ON K2B 8H6 Canada BUILDINGS EARTH & ENVIRONMENT ENERGY INDUSTRIAL INFRASTRUCTURE SUSTAINABILITY

19 Filename: p:\projects\civil engineering services\216000\ott a preston street - padom holdings\d - drawings\sketches and figures\ noise study fig 1 and fig2.dwg Last Plotted: 3/5/2015 3:37:48 PM Plotted by: duthilleulm References: xref-keyplan.dwg PRESTON STREET POPLAR STREET exp Services Inc. t: f: Queensview Drive, Suite 100 Ottawa, ON K2B 8H6 Canada BUILDINGS EARTH & ENVIRONMENT ENERGY INDUSTRIAL INFRASTRUCTURE SUSTAINABILITY

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25 Appendix B STAMSON Output

26 R1 STAMSON 5.0 NORMAL REPORT Date: :19:36 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: R1.te Description: Time Period: Day/Night 16/8 hours Road data, segment # 1: PRESTON STR. (day/night) Car traffic volume : 12144/1056 veh/timeperiod * Medium truck volume : 966/84 veh/timeperiod * Heavy truck volume : 690/60 veh/timeperiod * Posted speed limit : 50 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: PRESTON STR. (day/night) Angle1 Angle2 : deg deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 2 (Reflective ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 Road data, segment # 2: HWY 417 (day/night) Car traffic volume : 89054/7744 veh/timeperiod * Medium truck volume : 7084/616 veh/timeperiod * Heavy truck volume : 5060/440 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: HWY 417 (day/night) Angle1 Angle2 : deg 0.00 deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 2 (Reflective ground surface) Receiver source distance : / m Receiver height : 1.50 / 1.50 m Page 1

27 R1 Topography : 2 (Flat/gentle slope; with barrier) Barrier angle1 : deg Angle2 : 0.00 deg Barrier height : 3.00 m Barrier receiver distance : / m Source elevation : m Receiver elevation : m Barrier elevation : m Reference angle : 0.00 Results segment # 1: PRESTON STR. (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: HWY 417 (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! 1.20! 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 Results segment # 1: PRESTON STR. (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: HWY 417 (night) Page 2

28 R1 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! 1.20! 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): Page 3

29 R2 STAMSON 5.0 NORMAL REPORT Date: :23:29 MINISTRY OF ENVIRONMENT AND ENERGY / NOISE ASSESSMENT Filename: r2.te Time Period: Day/Night 16/8 hours Description: PRESTON STR. - BEDROOM BUILDING FACADE Road data, segment # 1: PRESTON STR. (day/night) Car traffic volume : 12144/1056 veh/timeperiod * Medium truck volume : 966/84 veh/timeperiod * Heavy truck volume : 690/60 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: PRESTON STR. (day/night) Angle1 Angle2 : deg 0.00 deg Wood depth : 0 (No woods.) No of house rows : 0 / 0 Surface : 2 (Reflective ground surface) Receiver source distance : / m Receiver height : 7.50 / 7.50 m Topography : 1 (Flat/gentle slope; no barrier) Reference angle : 0.00 Results segment # 1: PRESTON STR. (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 Results segment # 1: PRESTON STR. (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): Page 1