1.7.2 - Design Goals
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Equitable Use
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Let's start with the principle of Equitable Use. This principle emphasizes that designs should serve individuals with diverse abilities without causing segregation or stigma. Can anyone think of an example where this principle is applied?
How do automatic doors fit into this principle?
Great point! Automatic doors allow all users, including those with disabilities, to enter without assistance. This leads us to think about design goals: what do we hope to achieve?
Providing the same means of use for everyone, right?
Exactly! We want to ensure privacy, security, and safety are available to all. Remember: E for Equitable, E for Everyone.
Flexibility in Use
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Now, let's move on to Flexibility in Use. Can someone explain what this principle means?
It means users can choose how to interact with the design based on their needs.
Correct! For instance, having ATM machines with tactile keypads accommodates different user preferences. Who can think of other examples?
Like a staircase with handrails on both sides?
Exactly! That supports both left- and right-handed users. Try to remember: Flexibility starts with 'F' for Freedom of choice!
Simple and Intuitive Use
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Simple and Intuitive Use is the next principle. Why is it crucial for design?
It helps users understand how to use a feature without confusion.
Right! We aim to eliminate complexity and align with user expectations. Can anyone share an example?
Pictograms on signs that everyone can understand!
Well said! Remember: S for Simple, S for Straightforward.
Perceptible Information
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The next principle is Perceptible Information. Why is it significant?
It makes sure people can understand information regardless of their abilities.
Exactly! Effective communication can involve visuals, sounds, and tactile elements. What’s an example of this in civil engineering?
Tactile paving for visually impaired individuals?
Spot on! This shows how essential it is to differentiate information—remember: P for Perceptible, P for Presentation.
Tolerance for Error
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Let's discuss Tolerance for Error. What does this involve?
Designing things to prevent accidents and help users if they make mistakes?
Exactly! What are some design features that implement this principle?
Railings on stairs to prevent falls!
Yes! And we also have non-slip surfaces in wet areas. A helpful way to remember this is: T for Tolerance, T for Thoughtfulness!
Introduction & Overview
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Quick Overview
Standard
Universal Design's Design Goals emphasize creating inclusive environments that cater to a wide range of users' abilities while avoiding segregation. These goals highlight the importance of equitable use, flexibility, simplicity, perceptibility, error tolerance, low physical effort, and appropriate space for various needs, as illustrated through specific examples in civil engineering.
Detailed
Design Goals
Universal Design aims to create environments that everyone can use effectively and comfortably. This section outlines seven critical design goals:
- Equitable Use: Products and services should be accessible to all individuals without segregation.
- Aim to provide the same means of use, ensuring privacy and safety for everyone.
- Flexibility in Use: Designs should accommodate a range of preferences.
- Users should choose how to use a product, encouraging various approaches and facilitating precision.
- Simple and Intuitive Use: Interactions with designs should be straightforward, regardless of user experience.
- Reduce complexity and ensure intuitive understanding.
- Perceptible Information: Necessary information must be communicated effectively.
- Use visual, tactile, and auditory modes to ensure understanding regardless of user ability.
- Tolerance for Error: Environments should minimize hazards and unintended actions.
- Design elements should warn users or provide fail-safe measures.
- Low Physical Effort: Use should require minimal effort and fatigue.
- Facilitate comfortable operation for users of all physical abilities.
- Size and Space for Approach and Use: Provide adequate space and dimensions for users of varying sizes and mobility.
- Ensure access and reach are comfortable for all, incorporating assistive devices.
These principles not only enhance accessibility but also improve overall quality of life, showing their significance in civil engineering applications.
Audio Book
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Equitable Use
Chapter 1 of 7
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Chapter Content
Definition:
The design is useful and marketable to people with diverse abilities.
Design Goals:
- Avoid segregation or stigmatization of any users.
- Provide the same means of use for all users — identical whenever possible; equivalent when not.
- Ensure privacy, security, and safety are equally available to all users.
Examples in Civil Engineering:
- Automatic doors at entrances allow both people with disabilities and able-bodied individuals to enter without assistance.
- Digital pedestrian signals with audio and visual outputs benefit both visually impaired and hearing-impaired users.
- Multi-height counters in public buildings or customer service points that serve people in wheelchairs as well as standing individuals.
Detailed Explanation
Equitable use emphasizes the importance of designing with all users in mind. It ensures that no one feels left out or singled out because of their abilities. This means providing options that are equally usable for everyone, whether they are in a wheelchair or able-bodied. For example, instead of just having steps to enter a building, an automatic door allows both wheelchair users and those who walk to enter easily together.
Examples & Analogies
Think of a restaurant that provides both braille menus for visually impaired customers and standard menus for everyone else. By doing this, the restaurant is ensuring equality in access to information and experience.
Flexibility in Use
Chapter 2 of 7
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Chapter Content
Definition:
The design accommodates a wide range of individual preferences and abilities.
Design Goals:
- Provide choice in methods of use.
- Accommodate right- or left-handed access and use.
- Facilitate user accuracy and precision.
- Adapt to the user’s pace.
Examples in Civil Engineering:
- ATM machines with tactile keypads, audio outputs, and adjustable screen angles.
- Staircases with handrails on both sides to support left and right-handed individuals or people with reduced grip.
- Adjustable lighting in public spaces that helps individuals with varying degrees of visual sensitivity.
Detailed Explanation
Flexibility in use means that designs should cater to the different ways individuals prefer to interact with them. This could involve offering right or left-handed options, which is important for users who may not have the same strength in both hands. Adjustments in environments where people operate machinery or technology ensure that everyone can utilize these features effectively, depending on their needs and preferences.
Examples & Analogies
Imagine a kitchen designed with movable countertops. For someone who prefers to work standing up, they can adjust it to a higher position, while someone who prefers to sit can lower it. This flexibility makes the kitchen more usable for everyone.
Simple and Intuitive Use
Chapter 3 of 7
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Chapter Content
Definition:
Use of the design is easy to understand, regardless of the user’s experience, knowledge, language skills, or current concentration level.
Design Goals:
- Eliminate unnecessary complexity.
- Be consistent with user expectations and intuition.
- Accommodate a wide range of literacy and language skills.
- Provide feedback to the user.
Examples in Civil Engineering:
- Pictograms on signage that convey messages universally (e.g., restrooms, exits, emergency information).
- One-touch pedestrian crossing buttons with LED feedback.
- Color-coded and labeled floor plans in buildings for easy navigation.
Detailed Explanation
Designs should be straightforward, meaning they are easy to navigate and understand. This principle is crucial because it helps users who might struggle with complex instructions. For instance, signs that incorporate images (like a toilet symbol) help everyone, regardless of their language or reading skills, understand the message quickly.
Examples & Analogies
Consider your smartphone. The icons are universally understood— a phone for calling, a camera for photos. Even if you’re unfamiliar with the device, you can figure it out just by looking at those images, making the technology accessible to everyone.
Perceptible Information
Chapter 4 of 7
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Chapter Content
Definition:
The design communicates necessary information effectively to the user, regardless of ambient conditions or the user’s sensory abilities.
Design Goals:
- Use different modes (pictorial, verbal, tactile) for redundant presentation of essential information.
- Provide adequate contrast between essential information and surroundings.
- Maximize legibility of essential information.
- Differentiate elements in ways that can be described (i.e., make it easy to give instructions or directions).
Examples in Civil Engineering:
- Tactile paving on footpaths and at pedestrian crossings for visually impaired individuals.
- Emergency evacuation signs that include both audio alarms and flashing lights.
- Contrasting colors and textures on stairs and walkways to enhance visibility for the elderly or visually impaired.
Detailed Explanation
Perceptible information focuses on ensuring that users can access crucial information through various methods, such as sight, sound, and touch. This is particularly relevant for individuals with different sensory abilities. By providing information in multiple formats, designers ensure that everyone can understand vital messages, regardless of their sensory capabilities.
Examples & Analogies
Think of a fire alarm that rings loudly and simultaneously flashes lights. This dual alert system helps both those who can hear and those who may be hearing impaired to respond quickly in an emergency.
Tolerance for Error
Chapter 5 of 7
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Chapter Content
Definition:
The design minimizes hazards and the adverse consequences of accidental or unintended actions.
Design Goals:
- Arrange elements to minimize hazards and errors.
- Provide warnings of hazards and errors.
- Provide fail-safe features.
- Discourage unconscious action in tasks that require vigilance.
Examples in Civil Engineering:
- Railings and barriers on elevated walkways or balconies to prevent falls.
- Non-slip surfaces in wet areas such as bathrooms and swimming pool zones.
- Gradual curbs and ramps with tactile warning strips near vehicular roads.
Detailed Explanation
Tolerance for error is about making designs safer and easier to use by preventing potential accidents. This includes creating environments where even if users make a mistake, the results are not harmful. For instance, if someone slips on a wet floor, a non-slip texture can reduce their chances of falling. This is especially important in places where safety is a priority, such as public buildings.
Examples & Analogies
Imagine driving a car that has automatic braking when it detects a potential collision. This fail-safe feature helps prevent accidents even if the driver makes a mistake, thus enhancing safety.
Low Physical Effort
Chapter 6 of 7
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Chapter Content
Definition:
The design can be used efficiently and comfortably, with a minimum of fatigue.
Design Goals:
- Allow user to maintain a neutral body position.
- Use reasonable operating forces.
- Minimize repetitive actions.
- Minimize sustained physical effort.
Examples in Civil Engineering:
- Lever-style door handles instead of round knobs, which require less grip strength.
- Push-button elevators placed at accessible heights.
- Public washbasins with motion sensor faucets.
Detailed Explanation
Designing for low physical effort means creating products and environments that are easy to use without causing excessive fatigue. This is especially important for individuals with limited strength or mobility. Features like lever handles and motion sensor faucets are designed to help users operate them with minimal physical exertion.
Examples & Analogies
Think of an office chair with adjustable heights. A person can quickly pull a lever to change its height without needing to exert much strength. This ease of use helps reduce fatigue, especially during long hours at work.
Size and Space for Approach and Use
Chapter 7 of 7
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Chapter Content
Definition:
Appropriate size and space is provided for approach, reach, manipulation, and use regardless of user’s body size, posture, or mobility.
Design Goals:
- Provide a clear line of sight to important elements for any seated or standing user.
- Make reach to all components comfortable for all users.
- Accommodate variations in hand and grip size.
- Provide adequate space for assistive devices or personal assistance.
Examples in Civil Engineering:
- Wide doorways and corridors to accommodate wheelchairs and mobility aids.
- Accessible parking spaces with adjacent access aisles.
- Restrooms with turning space for wheelchairs and grab bars for assistance.
Detailed Explanation
This principle focuses on ensuring that there is adequate space for all users to interact with elements in the environment. Size and space should consider not just the average person but also those with different body sizes and mobility requirements. This means designing areas where wheelchair users can easily maneuver, and people have enough room to comfortably use a space.
Examples & Analogies
Imagine a restaurant with wide aisles and spacious tables. Someone in a wheelchair can move easily between tables and approach the cashier without feeling cramped or blocked. This thoughtful design makes dining enjoyable for everyone, rather than just those who can easily walk through tight spaces.
Key Concepts
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Equitable Use: Ensuring that all users have the same means of access and usability.
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Flexibility in Use: Providing various ways for users to interact with designs to suit their individual preferences.
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Simple and Intuitive Use: Creating designs that are easy to understand and interact with, regardless of prior knowledge.
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Perceptible Information: Communicating important information in multiple formats to ensure broad comprehension.
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Tolerance for Error: Designing environments that account for user mistakes and reduce risks.
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Low Physical Effort: Making sure that designs can be used without causing fatigue.
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Size and Space for Approach and Use: Allowing enough space for all users, including those with mobility aids.
Examples & Applications
Automatic doors that open for all users without manual assistance.
ATM machines with tactile keypads and audio instructions for users with disabilities.
Pictograms on signs that convey messages universally, enhancing understanding.
Tactile paving on sidewalks to assist visually impaired individuals.
Railings installed on both sides of stairways to promote safety.
Memory Aids
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Rhymes
In every design, keep it fair, for all to use without a care!
Stories
Imagine a town where every building had ramps and wide doors, making it easy for everyone to enter — that’s Universal Design showing care.
Memory Tools
Remember the acronym 'EFSPLS' for Equitable, Flexible, Simple, Perceptible, Low-effort, Size-focused principles.
Acronyms
USEFUL
Universal strategies for Everyone
using Flexibility
simplicity
and understanding.
Flash Cards
Glossary
- Equitable Use
Designs that are accessible and usable for all individuals, without segregation or stigma.
- Flexibility in Use
Designs that accommodate a wide range of personal preferences and abilities.
- Simple and Intuitive Use
Designs that are easy to understand and use, regardless of user experience.
- Perceptible Information
Effective communication of necessary information using multiple formats.
- Tolerance for Error
Designs that minimize hazards and allow for user mistakes.
- Low Physical Effort
Designs that can be used comfortably and efficiently with minimal fatigue.
- Size and Space for Approach and Use
Provision of adequate size and space for users of different body types and postures.
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