Transportation & Environmental Noise Mitigation

1© 2013 Armtec Ltd. • Confidential & Proprietary

Webinar

TRANSPORTATION & ENVIRONMENTAL NOISE MITIGATION

May 23, 2014

NOISE WALLS PRINCIPLES, PRACTICES & CASE STUDIES


Mike EdwardsNoise Attenuation Consultant

Armtec Ltd.

Today’s Guest Speaker

• Global authority on transportation & environmental noise mitigation solutions.

• Over 29 years in the industry.• VP of US Operations for Durisol.

1998 - 2009• Instrumental in driving &

developing specifications across North America and globally.


Introduction

Armtec is a leading global infrastructure and construction materials company

• 48 locations in Canada

• Approximately 2,000 employees

• Exceptional Product Range for:

• Agricultural drainage

• Commercial building

• Residential construction

• Natural resources

ABOUT ARMTEC


IntroductionINTRODUCTION

Products & Services


INTRODUCTION


Transportation & Environmental Noise Mitigation

ARMTEC:

Michael Edwards

Noise Wall Principles, Practices & Case Studies

May. 23-14.


TODAY’S AGENDA

• Noise Basics/Mitigation Practices and Principles• Barrier Types/Product Offerings Overview

Reflective BarriersAbsorptive BarriersTransparent BarriersCombination Barrier Applications Including Transparent and Earth Retaining

• Case Studies:• Transit, Rail, Utility/Rail, Highway, Solar and Wind, Developers,


NOISE BASICS

SOURCE, PATH & RECIEVER

Three components must be present for noise to exist: Source

Path Receiver

TRANSPORTATION & ENVIRONMENTAL NOISE MITIGATION


NOISE BASICSWhy Absorption?- TNM Software provides for sound absorption in modeling, potentially reducing wall heights- Increased mitigation performance at little extra cost- Parallel Noise Wall Applications- Eliminate multiple reflections- Eliminate reflections to associated receivers

Why Double-Sided Absorption?- “Community” noise generated on the residential side of the noise barrier is absorbed, not reflected back to adjacent receivers.- Service roads/arterials/ramps etc…located on “receiver” side of barrier- Increased acoustical performance at no additional cost


NOISE BASICS

Source: Source is the defined location where sound/noise is produced.

Receiver: A Receiver is the defined location where sound/noise is heard/impacted

NOISE REDUCTION COEFFICIENT (NRC):• An arithmetic average of an acoustic material to the nearest multiple of .05 of four sound absorption coefficients at frequencies of 250 Hz, 500 Hz, 1000 Hz, and 2000 Hz. An NRC of 0 = perfect reflection and an NRC of 1 = perfect absorption. NRC is based on human speech frequencies therefore providing a simple scale of how well a surface material will absorb the human voice.

MASS:•The weight of a given material in a given volume. Generally the heavier or denser a material is, the more sound it will stop and the higher the Transmission Loss (TL) will be. STC should be min. 30, with minimum density of 4Lbs/sq ft.

NOISE MITIGATION:•Noise mitigation is a set of strategies to reduce noise pollution. Solutions can include walls, barriers, earth berms, zoning setbacks, zoning buffers, etc…


NOISE BASICS

Noise Reduction Goal

•The amount of noise reduction that is desired. This value should be defined by a respective owner/DOT/State Highway Agency and should typically be in the range of 5-10 dB(A). Noise barriers must provide at least a 5-dB(A) reduction in highway traffic noise levels in order to provide noticeable and effective attenuation. A noise barrier should be designed to achieve the greatest reduction possible, but in no instance less than 5 dB(A).

•Properly-designed noise barriers should attain an IL approaching 10 dB(A), which is equivalent to a perceived halving in loudness for the first row of homes directly behind the barrier. For those residents not directly behind the barrier, a noise reduction of 3 to 5 dB(A) can typically be provided, which is just slightly perceptible to the human ear.


NOISE BASICS

How Does a Noise Barrier Work?

• Noise barriers reduce the sound which enters a community from a busy highway by either absorbing the sound, transmitting it, reflecting it back across the highway, or forcing it to take a longer path over and around the barrier.

• A noise barrier must be tall enough and long enough to block the view of a highway from the area that is to be protected, the "receiver."

• Noise barriers provide very little benefit for homes on a hillside overlooking a highway or for buildings which rise above the barrier.


NOISE BASICS


NOISE BARRIER SYSTEMS

Systems use drilled shaft/concrete caisson foundations.Concrete, galvanized steel posts, masonry columns

Custom Spans to 24 feet (7.31m) with standard spans of 12, 15 and 24 feet.

Single or Double Sided Absorptive or reflective precast composite panels are placed between posts and stacked to desired wall height.

Panels range from 20” tall to 10’ feet tallReflective Systems are designed for minimum 25 year service life

Transparent systems, stand alone/combinationGround Mounted, Bridge mounted, structure mounted, integrated retaining walls

TL-4 CrashTested


POSTS

Painted Galvanized Steel Embedded Concrete

Bolted Concrete Posts Galvanized Steel


AESTHETICS

Panel Textures

► Textures on both faces, 1 side molded 1 side pressed-in

► Various concrete finishes for single sided or solid concrete panels

► Custom Textures available

Molded AshlarCustom

Square flute

Custom

Pressed Ashlar

► Absorptive or reflective finish


AESTHETICS

Panel Textures

► Textures on both faces, 1 side molded 1 side pressed-in

► Various concrete finishes for single sided or solid concrete panels

► Custom Textures available

► Absorptive or reflective finish


DURISOL NOISE BARRIER SYSTEMS


Aesthetics

Color► Any color available

► Surface Applied Stain and/or integral pigment

► Stain provides Anti-Graffiti protection


Accessory Options

Precast Cladding For Steel Posts Access/Openings

Precast Traffic BarriersIntegrated Noise Barrier/Retaining Walls


Precast Claddings

Post Facings

Piers


Access / Openings

- Doors- Fire Hose- Drainage- Gates


DURISOL ACOUSTIC FACINGS (DOP’s)

A Presentation for: Webinar May 23-14


DURISOL ACOUSTIC FACINGS (DOP’s)


Canadian Bank Note, Ottawa, ON.

Holland, Netherlands.


Integrated Noise Barrier Retaining Walls


Details


Armtec is Exclusive North American Distributor of AcryliteTransparent Sheet as manufactured by Evonik.A “system” is a complete package of posts, panels, engineering and design, to provide the end user with a completed noise barrier structure

Ground Mounted Structure Mounted, (Bridge/Retaining Wall) Crash Tested TL-4 Ready Fit Panels Site Constructed Paraglas Vandal Fencing Wind Barriers

Transparent Barrier Systems


Combination of Precast and Transparent


Combo Elevation


Noise Barrier Installation

Drilled Shafts Setting Steel/Concrete Posts


Noise Barrier Installation

Setting PanelsPanel Delivery/Handling


Details


CASE STUDIES



ST. CATHARINES CORRIDORTitle: (MTO Contract 2007-2027) Q.E.W.Owner: Ministry of Transportation Ontario (MTO)Location:St. Catharines, ONDescription: (6.2) km of double-sided absorptive sound barrier integrated with retaining walls, traffic barriers and transparent panelsTiming: Project award in 2007, construction completed between 2007 to 2010


Specific Challenges:Full complement of Armtec/Durisol products required for the project including the first (MTO) Transparent Bridge Mounted Noise Barrier and Terrafort Panels with Durisol sound absorptive surfaces


ST. CATHARINES CORRIDOR


Bridge Mounted Transparent:

First highway installation of Transparent Noise Barrier on Ontario.


ST. CATHARINES CORRIDOR


Terrafort Panels:

First installation of Terrafix MSE wall system with Durisol surfaces


ST. CATHARINES CORRIDORTHE GREAT DIVIDE !


Transportation Noise Protected from Constant Noise


ST. CATHARINES CORRIDOR5.0 METER BARRIER WITH INTEGRATED TRAFFIC BARRIER


Integrated Precast Traffic Barrier:

Precast Traffic Barrier installed between posts providing impact protection and support for Noise Barrier Panels above.


TRANSPORTATIONCALTRANS (RT 580)Title: CALTRANS LIGHTWEIGHT & CRASH-TESTED NOISE BARRIEROwner: CALTRANSLocation:RT 580 over Estudillo Ave., San Leandro, CA, USA.Description: Acrylite Soundstop TL4 Noise Barrier System with Smokey Brown GS CC sheetsTiming: Project award and construction in 2010


Specific Challenges:CALTRANS needed a lightweight crash-tested system as bridge could not handle dead load of CMU wall. Armtec TL4 weighs approx. 25 lbs./ft2 vs. 88 lbs./ft2 for CMU.


TRANSPORTATIONNYSDOT (RT 17 / I81 INTERCHANGE)Title: Binghamton Transparent Noise BarriersOwner: NYSDOTLocation:RT 17 / I81 Interchange, Binghamton, NY, USA.Description: 45,000 ft2 of Acrylite Soundstop Ready Fit Panels with colourless GS CC sheetsTiming: Project award and construction in 2013


Specific Challenges:NYSDOT wanted a transparent wall to complement earlier project on RT 17 and allow increased aesthetics and visibility for residents and driving public.Our RF design allows the contractor to install panels using standard equipment (hoist/sling) and eliminates the need for vacuum lifters suction cups etc.


TRANSPORTATIONCALTRANS (RT 805)Title: CALTRANS 805 Transparent Sound WallOwner: CALTRANSLocation:RT 805 Chula Vista, CA, USA.Description: 11,000 ft2 of Acrylite Soundstop Ready Fit Panels with colourless

SOUNDSTOP sheetsTiming: Project construction early in 2014


Specific Challenges:CALTRANS needed a 16’ high Noise Barrier to meet requirements of noise study. Wall is on a property line and residents did not want their views blocked by a tall wall.


TRANSPORTATIONCALTRANS (RT 805)


Results:Residents protected from Noise, but vistas maintained!



Results:Combination of precast and transparent provides an elegant noise attenuation solution



Results:Color scheme blends seamlessly into this environment, does this barrier look obtrusive?


TRANSPORTATIONWISDOTTitle: WISDOT North-South Freeway (College Ave. to Howard Ave.)Owner: CALTRANSLocation:Milwaukee, WI, USA.Description: 445,000 ft2 of NB15 Durisol Noise Barrier Wall with Drystack and custom ICON’s / graphicsTiming: Project constructed in 2010


Specific Challenges:Very large project with aggressive installation schedule and custom requirements.


TRANSPORTATIONWISDOT


Aesthetics:Drystack Pattern and icorporation of ICONS along wall length make this a unique project


WIND FARM PROJECTSGOSFIELD WIND FARM


Title: Gosfield Wind FarmOwner: Ford Motor Company of Canada LimitedLocation:Kingsville, ONDescription: (3) sided Transformer Enclosure (NB15 System), baseplated HDG Steel Posts and Post Mounted Insulator Positioning BeamTiming: Project award and construction in 2010

Specific Challenges:Schedule challenges for fast-track project.


SOLAR FARM PROJECTSMIDHURST SOLAR FARMS


Title: Midhurst 3, 4 & 6 ULCOwner: PCL Constructors Canada Inc. (Renewable Energy Division)Location:Oro-Medonte & Springwater, ONDescription: (3) NB15 Transformer Enclosures, grounded HDG Steel PostsTiming: Project award and construction in 2013

Specific Challenges:Schedule challenges for fast-track project. Numerous short length panels required for non-standard bay spacings


MIDHURST SOLAR FARM


Grounding of Posts:Posts fabricated with grounding tabs for connection to grounding grid in substation ballast

Natural Stone Finish:A natural looking enclosure


HYDRO TRANSFORMER STATIONSSTAYNER T.S.


Title: Stayner T.S.Owner: HydroOne NetworksLocation:Stayner, ONDescription: (3) sided NB12 Transformer Enclosures, grounded HDG Steel PostsTiming: Project award and construction in 2013

Specific Challenges:Steel fabrication of corner posts, base plated posts, beams and insulator beam supports


HYDRO TRANSFORMER STATIONSSTAYNER T.S.


Fabricated Steel Sections:Baseplated posts & beams

(3) Sided Enclosure:Access for maintenance


HYDRO STATIONSESPLANADE T.S.


Title: Esplanade T.S.Owner: HydroOne NetworksLocation:Toronto, ONDescription: Perimeter Station Enclosure, Concrete Brick PatternTiming: Project award and construction in 2008

Specific Challenges:Concrete Brick Pier Facings with chases and opening to receive conduit and junction boxes. Integration of fabricated decorative metal security fencing.


HYDRO STATIONSMISSION SUBSTATION


Title: Mission SubstationOwner: Silicon Valley PowerLocation:Santa Clara, CA, USA.Description: 25,000 ft2 of SOUNDSTOP GS CC matte finish in a DCAP frameTiming: Project constructed

in 2012Specific Challenges:Owner needed to provide a soundwall around a substation but was concerned an opaque wall would create too many shadows/dark spaces for the maintenance workers. A matte finish was selected that would let in the light but also maintain privacy.


HYDRO STATIONSMISSION SUBSTATION


Matte Finish Panels:Panels reduce visual impact of the barrier as the let light through the panels but also maintain privacy!


TALL WALLCO-GENERATION FACILITY


Title: Grangehill Co-Generation FacilityOwner: Metrus Developments Inc.Location:Guelph, ONDescription: 13.0m high NB15 Noise Barrier WallTiming: Project award and construction in 2012

Specific Challenges:Poor soils required use of vibratory liners. Extremely tall wall requiring additional dimensional precision with installation of footings and posts.




Footing Form Liners:Form liners are vibrated in to place, earth within liners is removed, concrete poured and liner removed




Finished Installation:Consistent appearance of panels, economy of design for material and installation


DEVELOPER1100 KING STREET WEST


Title: 1100 King Street WestOwner: UrbancorpLocation:Toronto, ONDescription: NB12 3m high Noise Barrier Wall with integrated 3m high Earth / Crash RetainingTiming: Project award and construction in 2004Specific Challenges:Working adjacent to operating rail line.


DEVELOPER1100 KING STREET WEST


Wall Installation Complete:Installation of site services and backfilling operation can be completed quickly after installation of the wall system


TRANSITMOUNT DENNIS BUS GARAGE


Title: T.T.C. Mount Dennis Bus GarageOwner: Toronto Transit CommissionLocation:Toronto, ONDescription: 6.6m high Noise Barrier Wall (NB15 system) with transparent panels and Vehicle Access Door systemTiming: Project award 2006, construction completed in 2007

Specific Challenges:Custom panel pattern required solid works design.Due to the large number of different panels types required for the project, a special reusable panel crating system was developed to minimize the number of open bundles required on site during installation.




Panel Pattern:Designed by a Ryerson student and adopted by TTC, the pattern seamlessly flows from panel to panel




Vehicle Access Door:6.6m High x 4.5m Wide Double Swing Vehicle Access Door with Opaque (NT) Acrylite panels


TRANSITARTICULATED BUS GARAGE


Title: Articulated Bus GarageOwner: OC TranspoLocation:Ottawa, ONDescription: 4.5m Noise Barrier Wall (NB15 system) with Aluminum Ready Fit

Transparent PanelsTiming: Project award in 2009 and completion in 2010

Specific Challenges:Casting of integral conduit and lighting boxes within panels


TRANSITARTICULATED BUS GARAGE


(4) Sided Aluminum Ready Fit Transparent Panels:

15mm thick Acrylite Panels


TRANSITMOUNTLAKE TERRACE BUS STATION


Title: Mountlake Terrace Bus StationOwner: Sound TransitLocation:Mountlake Terrace, WA, USA.Description: 4,500 ft2 of colourless and matte finish GS CC sheetTiming: Project constructed in 2009

Specific Challenges:Owner wanted a lower cost and more durable alternative to laminated & tempered safety glass for use on grade as glazing in the bus station complex.


TRANSITMOUNTLAKE TERRACE BUS STATION


Cost advantage:The use of Acrylite panels in lieu of tempered safety glass saves loading on support structure and saves client money.


TRANSPORTATIONEXPO LRTTitle: Expo LRTOwner: MetroLocation:Los Angeles to Santa Monica, USA.Description: 12,000 ft2 of Colourless Acrylite SoundstopTiming: Project construction from 2010 to 2013


Specific Challenges:High-profile design-build project in LA area, worked with the design build team to develop attractive and functional noise barrier design to meet owners and community requirements


TRANSPORTATIONEXPO LRT


Light-Structure :The final design of the noise barrier is visually unobtrusive and provides the required protection from noise.


Audience Questions


FOR MORE INFORMATION

Mike EdwardsContact Information:[email protected](C) 905.577.7540

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Engineering

Transportation & Environmental Noise Mitigation