Indicators (TWSIs): Design Considerations Walking Surface Indicators Design... · Tactile Walking...
Transcript of Indicators (TWSIs): Design Considerations Walking Surface Indicators Design... · Tactile Walking...
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1Tactile Walking Surface Indicators (TWSIs): Design Considerations
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2Tactile Walking Surface Indicators (TWSIs): Design Considerations
Presentation Overview Presentation can be downloaded from the DesignABLE website;www.designable.net/oaa2016.htmlorGo to DesignABLE home pagewww.designable.netClick pull‐down menuGo to Resources pageChoose 2016 OAA Conference
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3Tactile Walking Surface Indicators (TWSIs): Design Considerations
Presentation Overview
1. Terminology and Acronyms2. How people use TWSIs3. Legislative requirements in Ontario4. Canadian and International Standards5. Installation Principles6. Materials and Installation Options7. Application Exercise
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4Tactile Walking Surface Indicators (TWSIs): Design Considerations
Who am I? Who are we?
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5Tactile Walking Surface Indicators (TWSIs): Design Considerations
1 Terminology and Acronyms
• TAI/TWSI• Attention Pattern• Guiding Pattern• Colour Contrast• Detectable• LRV• Luminance
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6Tactile Walking Surface Indicators (TWSIs): Design Considerations
1 Terminology and Acronyms
• TAI/TWSI• Attention Pattern• Guiding Pattern• Colour Contrast• Detectable• LRV• Luminance TAI –Tactile Attention Indicator (OBC)
TWSI – Tactile Walking Surface Indicator (AODA and ISO)
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7Tactile Walking Surface Indicators (TWSIs): Design Considerations
1 Terminology and Acronyms
• TWSI• Attention Pattern• Guiding Pattern• Colour Contrast• Detectable• LRV• Luminance
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8Tactile Walking Surface Indicators (TWSIs): Design Considerations
1 Terminology and Acronyms
• TWSI• Attention Pattern• Guiding Pattern• Colour Contrast• Detectable• LRV• Luminance
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9Tactile Walking Surface Indicators (TWSIs): Design Considerations
1 Terminology and Acronyms
• TWSI• Attention Pattern• Guiding Pattern• Colour Contrast• Detectable• LRV• Luminance
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10Tactile Walking Surface Indicators (TWSIs): Design Considerations
1 Terminology and Acronyms
• TWSI• Attention Pattern• Guiding Pattern• Colour Contrast• Detectable• LRV• Luminance
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11Tactile Walking Surface Indicators (TWSIs): Design Considerations
1 Terminology and Acronyms
• TWSI• Attention Pattern• Guiding Pattern• Colour Contrast• Detectable• LRV• Luminance
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12Tactile Walking Surface Indicators (TWSIs): Design Considerations
2 How people use TWSIs• Use residual sight• Use a mobility aid
• long cane• guide dog • sighted companion
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13Tactile Walking Surface Indicators (TWSIs): Design Considerations
2 Residual Sight
LuminanceContrast
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14Tactile Walking Surface Indicators (TWSIs): Design Considerations
2 Mobility Aids
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15Tactile Walking Surface Indicators (TWSIs): Design Considerations
2 How people use TWSIs
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16Tactile Walking Surface Indicators (TWSIs): Design Considerations
3 Legislative Requirements in OntarioOntario Building Code • Attention TAI/TWSIs required at
• Exit stairs (3.4.6.1.(2)) and 9.8.9.6.(4))*• Entry to vehicle routes where no curb or other
element provide to separate people from vehicles (3.8.3.2.((1))
• Curb Ramps (3.8.3.2.((2))• Platform edges (3.8.3.17 (1))• Pool Decks (3.11.3.1 (14))
*Part 9 requires TAI/TWSIs on all stairs except stairs serving a single dwelling unit or service space
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17Tactile Walking Surface Indicators (TWSIs): Design Considerations
3 Legislative Requirements in OntarioAODA Accessibility Standards for the
Design of Public Spaces • TAI/TWSIs required at
• Exterior stairs not regulated by the OBC (80.25)• Curb ramps not regulated by the OBC (80.26)• Depressed curbs at pedestrian crossings (80.27)
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18Tactile Walking Surface Indicators (TWSIs): Design Considerations
3 Legislative Requirements in OntarioTechnical Requirements for TAI/TSAIs
OBC AODA‐DOPS‐At the top of stairs starting one tread depth back from the edge of the top of the stair ‐At the leading edge of stair landings with a door‐Specific location criteria not provided for curb ramps or depressed curbs‐At platform edges
‐ At the top of all flights of stairs‐Extend full width of stair starting one tread depth back from the edge of the top of the stair‐Extend full width of curb ramp / depressed curb, commencing 150‐200 mm back from the curb edge‐At platform edges
300 – 610 mm deep At least 610 mm deep
Comply with clauses 4.1.1+2* of ISO 23599 (truncated‐domed surface)
*Note that the colour‐contrast requirements from the ISO standards are not referenced
‐Must have tactile elements raised above adjacent surfaces‐Must have high tonal contrast to adjacent surfaces
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19Tactile Walking Surface Indicators (TWSIs): Design Considerations
4 Canadian/International Standards
TAI/TWSI requirements have been harmonized in 2015 updates
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20Tactile Walking Surface Indicators (TWSIs): Design Considerations
4 Attention TAI/TWSIs
Top diameter of truncateddomes or cones mm
Spacingmm
12 42 to 6115 45 to 6318 48 to 6520 50 to 6825 55 to 70
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21Tactile Walking Surface Indicators (TWSIs): Design Considerations
4 Guidance TAI/TWSIs
Top width of flat‐toppedelongated bars mm
Spacingmm
17 57 to 7820 60 to 8025 65 to 8330 70 to 85
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22Tactile Walking Surface Indicators (TWSIs): Design Considerations
5 Shorelines versus TAI/TWSIs?• A shoreline is a continuous
edge (curb, wall, etc.) that a person with vision loss using a long cane can safely use for directional guidance
• Unobstructed shorelines are preferable to TAI/TWSI guidance paths
• TAI/TWSI guidance paths should be considered where shorelines do not exist (such as across a plaza or concourse)
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23Tactile Walking Surface Indicators (TWSIs): Design Considerations
5 Shorelines versus TAI/TWSIs?
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24Tactile Walking Surface Indicators (TWSIs): Design Considerations
5 Guidance Path Installation Principles
Conceptual design of a guidance route system for Rotterdam Central Station (Source: PBT consult)
Always use the K.I.S.S. Principle K KeepI ItS SimpleS Stupid
Limit the use of tactile guiding paths to primary routes and elements
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25Tactile Walking Surface Indicators (TWSIs): Design Considerations
5 Guidance Path Installation Principles• Straight guidance paths are
preferred• 300 – 600 mm wide• Maintain 600 mm clear space
on either side of path• Minimise number of turns• Use 90° turns wherever
possible• Perpendicular approach to
elements• Terminate 600 mm from wall
or other elements• 50% LRV Contrast
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26Tactile Walking Surface Indicators (TWSIs): Design Considerations
5 Guidance Path Installation Principles
• Lead people to the usable parts of elements (elevator call button, stair handrail, etc.)
• Use 600 x 600 mm attention surfaces at decision‐making points
• Keep guiding paths clear of obstructions (street furniture, overhanging tree branches, etc.)
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27Tactile Walking Surface Indicators (TWSIs): Design Considerations
5 Guidance Paths
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28Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Cast in Place Systems– Precast concrete pavers– Composite panels– Cast iron systems– Porcelain stoneware tiles– Flexible polymer tiles– Other Systems
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29Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Cast in Place Systems– Precast concrete pavers– Composite panels– Cast iron systems– Porcelain stoneware tiles– Flexible polymer tiles– Other Systems
Source: Tile Tech Pavers
Source: Pavestone
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30Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Cast in Place Systems– Precast concrete pavers– Composite panels– Cast iron systems– Porcelain stoneware tiles– Flexible polymer tiles– Other Systems
Source: Armor Tile
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31Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Cast in Place Systems– Precast concrete pavers– Composite panels– Cast iron systems– Porcelain stoneware tiles– Flexible polymer tiles– Other Systems Source: Duralast
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32Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Cast in Place Systems– Precast concrete pavers– Composite panels– Cast iron systems– Porcelain stoneware tiles– Flexible polymer tiles– Other Systems
Source: Urban Access Solutions
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33Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Cast in Place Systems– Precast concrete pavers– Composite panels– Cast iron systems– Porcelain stoneware tiles– Flexible polymer tiles– Other Systems
Source: Urban eON Tile
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34Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Cast in Place Systems– Precast concrete pavers– Composite panels– Cast iron systems– Porcelain stoneware tiles– Flexible polymer tiles– Other Systems
Machined Stone
Machined Granite
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35Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Surface‐Applied Systems– Composite systems– Plastic/Metal Stud/Bar systems (often called discrete systems)
– Thermoplast/epoxy systems
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36Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Surface‐Applied Systems– Composite systems– Plastic/Metal Stud/Bar systems (often called discrete systems)
– Thermoplast/epoxy systems
Source: Armor Tile
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37Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Surface‐Applied Systems– Composite systems– Plastic/Metal Stud/Bar systems (often called discrete systems)
– Thermoplast/epoxy systems
Source: Urban Access Solutions
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38Tactile Walking Surface Indicators (TWSIs): Design Considerations
6 Materials and Installation Options
• Surface‐Applied Systems– Composite systems– Plastic/Metal Stud/Bar systems (often called discrete systems)
– Thermoplast/epoxy systems
Source: PBT consult
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39Tactile Walking Surface Indicators (TWSIs): Design Considerations
7 Let’s try it: Design Study
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40Tactile Walking Surface Indicators (TWSIs): Design Considerations
Learning Objectives
• Understand the purpose for and key characteristics of TWSI’s
• Identify the design principles appropriate for the design of TWSI systems
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41Tactile Walking Surface Indicators (TWSIs): Design Considerations
Learning Objectives
• Identify commonly used TWSI types, TWSI materials and installation options
• Develop a design for an effective TWSI system for a small building
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42Tactile Walking Surface Indicators (TWSIs): Design Considerations
Thank you!
Bob Topping
DesignABLE Environments
905‐278‐0665
www.designable.net