details of anti noise walls - june 15 2016 - nouveau pont champlain
TRANSCRIPT
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›Details of Anti-Noise Walls ›City of Montreal
New Champlain Bridge Corridor Project
June 15, 2016
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New Champlain Bridge Corridor Project
Presentation Outline
1. Noise study
2. Visual and urban integration of the
anti-noise walls
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New Champlain Bridge Corridor Project
Verdun
L’Île-des-Soeurs
Sud-Ouest
Impact study criteria for selecting sensitive areas: - Residential and institutional areas
- Areas located in a 300-metre radius of expressways and on-ramps
Areas under Review
Base map: Utilisation du sol 2014, Communauté métropolitaine de Montréal
Agglomération de Montréal feuillet 66-08-US 2014
Areas under Review
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New Champlain Bridge Corridor Project
Noise Criteria
Definition of ambient noise
• Audible noise recorded prior to the project
• Measured over a 24-hour span (Leq 24 h)
• Used to establish the project's noise criteria
Noise criteria for the project
The average sound level over 24 h (Leq 24 h) generated by expressways
and on-ramps must not exceed:
• 55 dBA if the initial ambient noise was below 55 dBA
• An increase of 1 dBA if the initial ambient noise was between 55 and
59 dBA
• 60 dBA if the initial ambient noise was greater than or equal to
60 dBA
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New Champlain Bridge Corridor Project
Noise Criteria
Project noise
• Noise modelled for 24-hour periods (Leq 24 h)
• Based on the following key data:
Average daily traffic in summer in 2050
Design of expressways and their on-ramps
Type of asphalt
Speed
Topography
Mitigation measures
• Must mitigate noise from expressways and on-ramps in 2050 for
compliance with noise criteria
• The goal is not to mitigate the noise from other sources (trains,
factories, provincial and municipal roads, etc.)
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New Champlain Bridge Corridor Project
Initial Ambient Noise (May 2015) LaSalle/Wellington Area
M1
M2
M3
Railways
LaS
all
e
Sensitive area
- Residential
- Institutional
- Public park
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New Champlain Bridge Corridor Project
Initial Ambient Noise (May 2015)
L’Île-des-Soeurs Area
I1
I2
I3
Sensitive area
- Residential
- Institutional
- Public park
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New Champlain Bridge Corridor Project
1. (T): noise transmitted through the wall (negligible)
2. (D): noise diffracted on the edges of the wall
3. (A) and (R): noise absorbed and reflected by the wall
Sourc
e:
Cité
acoustique,
Univ
ers
ité
du M
ain
e,
Fra
nce
How an Anti-Noise Wall Works
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New Champlain Bridge Corridor Project
Assessment of Project Noise in 2050 --- without Anti-Noise Walls
M1
M2
M3
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New Champlain Bridge Corridor Project
Assessment of Project Noise in 2050 --- with Anti-Noise Walls
Concrete barrier
Anti-noise wall
M1
M2
M3
LaS
all
e
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New Champlain Bridge Corridor Project
Assessment of Project Noise in 2050 --- without Anti-Noise Walls
I1
I2
I3
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New Champlain Bridge Corridor Project
Assessment of Project Noise in 2050 --- with Anti-Noise Walls
I1
I2
I3
Anti-noise wall
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New Champlain Bridge Corridor Project
Visual and Urban Integration
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New Champlain Bridge Corridor Project
New Champlain Bridge Corridor Project: Entrance Integrated into its Environment
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New Champlain Bridge Corridor Project
Corridor Artwork Elements Inspired by the Main Bridge
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New Champlain Bridge Corridor Project
Architectural Elements of the Anti-Noise Walls
TYPE A OPAQUE TYPE C
TRANSPARENT
Highway side Residential side
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New Champlain Bridge Corridor Project
Ru
sh
bro
ok
e
Gibbons
We
lling
ton
De la Poudrière
Butler
Location and Height of Anti-Noise Wall De la Poudrière and May Street Area
Railway
Type A opaque wall made of panels 500 mm
high
Barrier H: 1.14 m
Standard height in relation to the inside of the
runway
Vertical scale 1x1
Runway
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Ja
cq
ue
s-L
au
zo
n
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New Champlain Bridge Corridor Project
Details of the Visual Integration
TYPE A
May Street
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New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise Walls
1 2
2 3
2 3
1 2
LaSalle
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New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise Walls
2 3
2 3
1 2
1 2
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LaSalle
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New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise Walls
4 5
3 4
3 4
4 5
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New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise Walls
3 4
3 4
4 5
4 5
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New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise Walls
5 6
5 6
Wellington
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New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise Walls
5 6
5 6
Wellington
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New Champlain Bridge Corridor Project
Site Integration of the Anti-Noise Wall Gibbons Street Area
Section A before and after
A B C
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New Champlain Bridge Corridor Project
Site Integration of the Anti-Noise Wall De la Poudrière Area
Section B before and after
A B C
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New Champlain Bridge Corridor Project
Site Integration of the Anti-Noise Wall of May Street Area
Section C before and after
A B C
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New Champlain Bridge Corridor Project
Elevation of the Anti-Noise Wall L’Île-des-Soeurs Area
Type C barrier and
transparent wall
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Thank You