universal designnew york
City of New York Department of Design and Construction in partnership with The Mayor’s Offi ce for People with Disabilities
Danise Levine, M.Arch. Editor-in-Chief universal design new york
Danise Levine, M.Arch. Editor-in-Chief
PUBLICATIONS
Center for Inclusive Design and Environmental Access University at Buffalo The State University of New York Buffalo, NY Cataloging-in-Publication Data
Levine, Danise; editor.
The NYC Guidebook to Accessibility and Universal Design / Danise Levine, ed. p. cm.
Includes index.
ISBN 0-9714202-3-8
1. Universal design. 2. Barrier-free design. I. Title .
© 2003 Center for Inclusive Design & Environmental Access, University at Buffalo, The State University of New York a New York City remains committed to furthering universal design and Preface to encouraging architects to integrate universal design concepts into their work. To make it easier for architects to access the universal design concepts that were defined in New York City's 2001 book "Universal Design New York", this handy desktop reference manual has been developed. This desktop manual concisely presents the most common universal design principles from Universal Design New York and offers simple, straightforward examples of how to incorporate those principles into real projects.
Incorporating universal design into projects benefits everyone. We urge you to use this desktop manual in conjunction with Universal Design New York to make that a reality. New York City remains committed to furthering universal design and to encouraging architects to integrate universal design concepts into their work. To make it easier for architects to access the universal design concepts that were defined in New York City's 2001 book "Universal Design New York", this handy desktop reference manual has been developed. This desktop manual concisely presents the most common universal design principles from Universal Design New York and offers simple, straightforward examples of how to incorporate those principles into real projects.
Incorporating universal design into projects benefits everyone. We urge you to use this desktop manual in conjunction with Universal Design New York to make that a reality.
Kenneth R. Holden, Commissioner Department of Design and Construction City of New York b a Preface ...... 2 Contents b Table of Contents ...... 4
1 Introduction ...... 6
2 How to Use the Book ...... 16
3 Principles of Universal Design ...... 18
4 Using Circulation Systems ...... 20
5 Entering and Exiting ...... 40
6 Wayfinding ...... 54
7 Parking and Passenger Loading Zones ...... 74
8 Seating ...... 80
9 Obtaining Products and Services ...... 86
10 Using Public Amenities ...... 106
11 Cultural Facilities ...... 122
12 Public Assembly and Entertainment Facilities ...... 136
13 Participant Sports and Recreation Facilities ...... 148
14 Temporary Lodging ...... 160
15 Workplace Facilities ...... 174
16 Human Service Facilities ...... 192
17 Renovations and Additions ...... 204
18 Conclusion ...... 210
Universal Design Audit Checklist ...... 212
Credits ...... 228
Resources ...... 230
1 Universal design is an approach to the development of "products and Introduction environments that can be used effectively by all people, to the greatest extent possible, without the need for adaptation or specialized design" (North Carolina State University, 1997).
Universal Design New York 2 (UDNY2) provides best practice design strategies for implementing universal design. It is a companion document to Universal Design New York. The first book presented an introduction to the concept of universal design, described the Principles of Universal Design and how they can be applied to buildings, and provided many guidelines for implementing the Principles in many kinds of buildings. This book augments the first book by providing strategies to address Without a legal mandate, the guidelines, a checklist for use in design and more examples from actual adoption of universal design buildings and projects. It also shows how universal design differs from accessible design. depends on acceptance by a broad consistuency, The book is designed to assist architects, developers, city officials and including designers and others in the City of New York to implement universal design principles other decision makers. thereby helping the City become a "universal access city." Thus, many of the examples are from New York. However, the ideas and examples presented here are clearly relevant to other cities.
The format of the book compares accessible design with universal design so that the differences are made clear. While many publications have been written about universal design, they often equate the two concepts. But, they are really very different.
There are many accessibility laws in the United States and abroad. The Americans with Disabilities Act (ADA) is perhaps the most well known of these laws. The purpose of accessibility laws are to eliminate barriers in buildings for use by people with disabilities. By definition, accessibility 7
laws distinguish between people Principle 1 Equitable Use with disabilities and able-bodied The design is useful and marketable people. While certainly valuable to people with diverse abilities. and necessary for insuring the rights Principle 2 Flexibility in Use of people with disabilities, this The design accommodates a wide range distinction implies an arbitrary of individual preferences and abilities. dichotomy for designers. In reality, there is plenty of room for Principle 3 Simple and Intuitive Use improvement in usability and safety Use of the design is easy to understand, for the entire population. Focusing only regardless of the user's experience, on improvements for people with knowledge, language skills, or current disabilities brings unnecessary attention concentration level. to that group and perhaps adds to the Principle 4 Perceptible Information stigma of disability itself. It creates an The design communicates necessary "us" versus "them" mentality. information effectively to the user, regardless of ambient conditions or Universal design, on the other hand, the user's sensory abilities. seeks to provide improved usability and safety for all groups in the Principle 5 Tolerance for Error community. It seeks to extend the The design minimizes hazards and ideals of accessible design to the adverse consequences of accidental previously underserved groups like or unintended actions. people of short stature, older Principle 6 Low Physical Effort people, pregnant women, parents The design can be used efficiently with children in strollers, people who and comfortably and with a minimum do not speak the local language and of fatigue. others. It recognizes that improved usability enhances the value of Principle 7 Size and space for buildings for all of us and, piece Approach and Use by piece, it creates a city that is Appropriate size and space is provided a true home for everyone and one for approach, reach, manipulation, and that welcomes all visitors with grace use regardless of user's body size, and dignity. posture, or mobility.
A group of experts developed Following these principles leads to a the Principles of Universal Design design approach that does not in 1997: discriminate and provides increased usability for everyone. 8
Accessibility is a civil rights issue focused Without a legal mandate, adoption on eliminating discrimination against one of universal design depends on minority group. In contrast, universal acceptance by a broad consistuency, design is a market driven concept. including designers and other decision Rather than responding to legal makers. This means that universal design mandates, it reflects the realities of has to provide added value beyond contemporary societies with their accessibility for people with disabilities. diverse populations. Instead of a focus For example, the design of products on one minority group, universal design like grab bars has been driven mostly is an inclusive approach that benefits by accessibility codes. The result is that the entire population. most grab bars are direct responses to the diagrams in the codes and provide Accessibility codes are focused no benefits beyond meeting code on functional issues and minimal requirements. In contrast, one solutions. They do not guarantee manufacturer took a universal design good design. Universal design expands approach that resulted in a very on the lowest common denominator different product, a grab bar system of codes to address a broader mission that provides a far greater level of that recognizes choices and differences. safety for everyone than the minimum It integrates usability with other code requirements and integrates many important design concerns like accessories to improve the usability and aesthetics, sustainable design and safety of a bathing environment for a urbanism. wider range of people. The result is far more attractive and functional. Accessibility is a finite concept. It can be measured by compliance There are many myths about universal with standards. Universal design design. In Universal Design New York, however, has no predefined end state. we identified these myths and Unlike a legal mandate, there is no described the facts that disproved predefined minimum level of compliance. them. The myths include: Universal design is an ideal rather than an end state. Success in universal design Myth #1 There are only a small has to be evaluated by how well a number of people who can benefit building meets the Principles given the from universal design; thus we resources available and the socio- should not let their needs dictate. physical context of the project. We like to use the term universal designing, a Throughout our lifespan, we all verb rather than a noun, to emphasize experience variations in our this evolutionary imperative. abilities. In fact, more than 50% of the U.S. population could be 9
characterized as having some sort Myth #4 Improved medical of functional limitation. Therefore, technology is reducing the universal design eventually incidence of functional limitations, benefits all of us. thus the need for universal design is short lived. Myth #2 Universal design only helps people with disabilities and Actually, quite the opposite is true. older people. Due primarily to the rapid aging population, the incidence of Universal design extends the functional limitations have been benefits of good functional design increasing since the 1970s, and to many groups of people who are continue to do so. As the Baby Boom not necessarily classified as having generation reaches old age, the numbers a disability or aged, but who routinely of older people are projected to encounter functional obstacles in their increase significantly, and the need for daily lives (short people, tall people, universal design will intensify. large people, frail people, pregnant women, parents with children in Myth #5 Universal design cannot strollers, visitors in an unfamiliar sustain itself in the marketplace city, etc). because people who need it most cannot afford it. Myth #3 The Americans with Disabilities Act (ADA) and other There are two marketplaces for disability rights laws have created universal design, the free market equality, so there is no need to do and the public sector. While aging any more. Baby Boomers impact the free market economy with higher incomes, The ADA addresses physical and large numbers and higher levels of sensory limitations, while universal consumption, the lower income population design goes beyond just physical plays an important role in driving the function and considers the differences in direction of government services and the way people think and interpret not-for-profit organizations. things (e.g., understanding signs, wayfinding, using products, Myth #6 Universal design is simply understanding alarms and warnings, good ergonomic design. etc.). Human factors and ergonomics engineering have generally focused on the majority of users, as opposed to 10 universal design, which demonstrates that but they also enhanced productivity with good ergonomic design, those who for all people. Examples like these are not in the majority can also be demonstrate the value of universal included. design and confirm the universal design concept. Myth #7 Universal design costs even more than accessible design. Second, as the 21st Century proceeds, even in the less developed If buildings were usable by everyone countries, societies throughout the from the start, then fewer renovations world are experiencing a rapid would be necessary in the future and increase in the number of older those renovations that were required people in their population. In the would be less expensive. Many U.S., it is expected that by 2030, universal design features cost nothing, the portion of the population over and those that have marginal 65 years of age will reach 20% of additional costs may have a value the population. As described in more that exceeds their expense. detail in Universal Design New York, the new generation of older people, Two key trends are fueling the and the coming baby boomer advancement of universal design. generation even more so, has First, the disability rights movement considerable purchasing power has recognized that regulating and will have a significant impact accessibility may increase function on the market for goods and services. and reduce discrimination but it does Cities everywhere will have to not guarantee full participation in respond to their desire for continued society. Promoting universal access independent lifestyles or risk losing that benefits all people is a more the most affluent of this group as effective way to promote social they vote with their feet for more participation. There have been many accommodating environments. From inventions that were originally created a public sector perspective, the to help people with disabilities burden of supporting the ever compensate for impairments. They growing number of aging citizens became hugely successful when through personal assistance will introduced into the broader market. prove to be a great burden on a Examples include the typewriter, the declining number of working sound recording, text to speech systems, taxpayers. Universal design of voice recognition and email. All these products, facilities and systems is a inventions not only allowed people way to maintain independence in with physical and/or sensory limitations late adulthood without increasing to participate more fully in social roles the burden to the taxpayer.
2 This book was designed as a companion to Universal Design New York, How to Use produced by the City of New York's Mayor's Office for People with This Book Disabilities in the Fall of 2001. That book introduced the idea of bringing universal design principles to the design of buildings and facilities throughout New York City. It presented a definition of universal design, a rationale for adopting universal design principles and many guidelines for incorporating universal design into development projects of all types. Extensive illustrations were used to demonstrate "best practice" universal design solutions.
Universal design is a rapidly Universal Design New York was received enthusiastically, not only by expanding area of practice people in the City but by professionals and experts all over the world. in all the design professions. The success of the first book prompted the Department of Design and The growing demand to design Construction to produce a second publication. The idea was to both buildings and sites that are follow the model established by UDNY and provide a publication that usable by everyone regardless was more focused on technical solutions to problems, especially in the of their intellectual, functional context of compliance with accessibility regulations such as those that or sensory abilities is a implement the Americans with Disabilities Act and the New York City demographic fact of Accessibility Code. professional life because of the aging of the population. 13 How to Use This Book
Strategies buildings as well as additions or renovations to existing buildings. It UDNY2, like its predecessor, purposely could also be used effectively by avoids recommending prescriptive facilities managers and developers to design standards for the universal evaluate existing buildings and sites design of buildings and sites. Instead, it and to develop problem statements for provides strategies that broaden and their improvement. enhance the usability of buildings and sites for everyone. The illustrations of Universal design is a rapidly expanding best practices are not meant to be area of practice in all the design copied or imitated. Rather, they are professions. The growing demand to provided to use as examples, promote design buildings and sites that are an understanding of the concepts and to usable by everyone regardless of inspire others to develop their own their intellectual, functional or sensory creative applications. abilities is a demographic fact of professional life because of the aging It is particularly important for the of the population. This guidebook reader to understand that the strategies introduces professional designers to listed under the accessibility sections principles and strategies of universal of this book are not to be viewed as design that will enable them to rise to substitutes for the codes and the challenges posed by the new regulations. We have simplified and demographics. Moreover, universal condensed the requirements to make design contributes to social and ethical them easier to follow and understand responsible design of buildings and within the context of universal design. sites. It promotes replacement of our Designers should refer to the actual current discriminatory exclusive designs codes and regulations for details. with new affirming inclusive designs that We, nor the City of New York, make are usable by all of us. And it does this no warrant or guarantee that the without burdening the professional accessibility strategies are complete designer with prescriptive standards and accurate. that stifle design innovation. The benefits of universal design are best Audience for this Guidebook achieved by reinforcing design The strategies can be applied to all innovation rather than design imitation, buildings and sites – or worse, design duplication. private as well as public. This book is targeted primarily at professional Evaluation and Improvement Over designers, including architects, Time landscape architects, urban designers, Universal design is a continuous process interior designers and graphic designers of innovation targeted at improving who are engaged in design of new 14 usability for everyone. As with any insure that their work will have a innovative process, improvement upon meaningful impact on the lives of the status quo is always possible. But citizens for many years to come. In the with universal design, the motivation to future, we hope to update and expand continually enhance the usability of a this volume with new information that building is ever present because we we glean from the ongoing program of are constantly interacting with the built research at the IDEA Center. Any environment around us. A universally suggestions that readers have for us designed building or site is as much would be welcome. Please visit our web about becoming universally usable as it site and send us your comments and is about being universally usable. suggestions. There are always improvements that can be made.
Universal design strategies can also be improved over time. Through post- occupancy evaluations of buildings and sites, universal design principles and strategies can be tested, improved and documented. Through such evaluations, even our best current examples of universal design in buildings and sites will, over time, be challenged and replaced by better examples. Building in an evaluation cycle in the lives of all buildings and sites can go a long way to improving our knowledge and practice of universal design. This book can be a valuable resource for post occupancy evaluations. By including a Universal Design Audit Checklist, we hope to encourage such uses.
Through new construction, renovation and maintenance projects, cities are constantly undergoing improvement. Improving usability should be an important part of that process. We hope that this book will be useful to designers who are engaged in improving cities and help them to 15 How to Use This Book
Key Design Goals section offers a short background and important points for each topic area.
Helpful tips for implementation of accessible requirments indicated in green sidebar.
Metric conversions indicated for all units.
Cross references are indicated by the eyeglass icon. All cross references are conveniently summarized at the end of each topic area.
L Tips: Design of the Book accessibility. "Tips" are provided throughout the document to give This new book is designed for easy advice and suggestions. Some ` Design tips are use during work tasks. The guidelines detailed technical notes have been located on the from the first book have been used included in places where we know sidebar of every to generate more detailed from experience that more technical topic specific page. "strategies for universal design." information is needed. Illustrations We have also included some new are used to give examples of how ` Consider the tips in ideas. the green sidebar to to implement selected strategies. The help you to make new book is spiral bound so it can be Each two-page spread features one better informed laid flat on a desk for easy reference. choices about the topic area, with requirements of planning, design, accessibility codes and standards and post-occupany have been separated out (on the left Accessible codes and standards analysis of “green” page) from the other follow the rectangular green environments that universal design strategies (on the “Accessible” header: meet access right “brown” page) so that it is clear requirements. to the designer what the law requires and how universal design extends Accessible beyond the legal mandate of 16
Important areas of Key Design Goals are highlighted for quick reference.
Spiral binding allows book to remain open and flat while working. Text is set in easy to read font, at large 12 point size.
Helpful tips for implementation universal design guidelines indicated in brown sidebar.
Convenient summary of all cross references noted in topic area.
We have also included a Universal How This Book is Arranged L Tips: Design Audit Checklist to be used This book has been arranged and in the evaluation of designs and color coded to help you compare ` Design tips are completed projects. Accessible conditions to Universal located on the Design conditions. Refer to the sidebar of every topic specific page. diagram above for an explanation of the features of this book. Tips provided in the brown sidebar feature Universal Design insights to help you design environments and Universal design criteria are create situations that indicated by the rounded can be enjoyed by brown “Universal” header: everyone – equally.
Universal
3 Purposes and History Principles of Accessible design is primarily about court-enforced compliance with Universal regulations. The regulations are intended to eliminate certain physical barriers that limit the usability of environments for people with disabilities. Design Historically, accessible design has focused on compliance with state or local building codes. These typically were based on the American National Standards Institute’s requirements. With the passage of the Americans with Disabilities Act (ADA) in 1990 and the subsequent development of the ADA Accessibility Guidelines, accessible design has focused more recently on satisfying these minimum technical criteria to allow most people with disabilities to use most of the designed Universal design is a market- environment (Salmen, 1996). driven process intended to create environments that are Universal design is a market-driven process intended to create usable by all people. environments that are usable by all people. While considerations for people with disabilities are certainly necessary for universal design, they are not sufficient when planning and designing for the whole population. Accommodating the needs and wishes of everyone – e.g., children, the elderly, women and men – is also necessary for universal design (Norwegian State Council on Disability, 1997).
Acknowledging this greater inclusiveness, in the mid-1990s the Center for Universal Design in Raleigh, NC asked ten leading advocates to identify the underlying performance requirements of universal design. The resulting Principles of Universal Design (Connell, et al, 1997; North Carolina State University, 1997), developed through funding provided by the U.S. Department of Education’s National Institute on Disability and 19 Principles of Universal Design
Rehabilitation Research (NIDRR), has Principle 2 Flexibility in Use since become the most well The building’s design should allow referenced definition. people to use its design features in more than one prescribed way Explaining and Illustrating the (e.g., providing a countertop Principles orientation map that is viewable These seven principles are not from either a seated or standing without their critics. Some consider position). It should accommodate them vague and difficult to both right-and left-handed use and understand. Others argue that be adaptable to the individual they are more applicable to product pace. The building’s design should and graphic design than building have the built-in flexibility to be design. And yet, as evidenced by usable even when it is employed their growing international in an unconventional or acknowledgment, unanticipated manner. these principles continue to maintain their status as the definitive Principle 3 Simple and Intuitive statement of what constitutes The building should make it easy for universal design. This guidebook everyone to understand the purpose also acknowledges the seven of each design feature and how to Principles of Universal Design by use it (e.g., providing washroom explaining and illustrating their lavatory faucets that make their applicability to the universal design method of operation readily of the built environment. apparent and relatively easy). Moreover, its means of use should Principle 1 Equitable Use be intuitively obvious so that it The building’s design should make operates as anticipated and, it equally usable by everyone. therefore, can be used Ideally, the means by which people spontaneously. use the building should be the same (e.g., providing one means of entry Principle 4 Perceptible Information to the building that works well for The building should provide all everyone). If it cannot be identical, essential information in a variety the several means provided must be of modes (e.g., written, symbolic, equivalent in terms of their privacy, tactile, verbal) to ensure effective security, safety and convenience. communication with all users The building must never employ regardless of their sensory abilities. means that isolate or stigmatize any The information provided must be group of users or privilege one presented with sufficient contrast to group over another. surrounding conditions so that it is 20 distinguishable from its context and Principle 7 Size and Space decipherable in all its various modes for Approach and Use of presentation. A building’s design features should provide an adequate amount of Principle 5 Tolerance for Error space that is appropriately Ideally, the building’s design arranged to enable anyone to use should eliminate, isolate or shield them (e.g., providing knee space any design features that could under a washroom lavatory to prove hazardous to or enable use by someone in a seated inconvenience any user. position). In addition, the space When potentially dangerous needs to be arranged to provide conditions are unavoidable, a clear path of travel to and from users should receive warnings as important design features for all they approach the design feature users. (e.g., providing proximity warnings in a variety of sensory modes near the top of stairs.) The building’s design should also anticipate accidental or unintended actions by any user to minimize the inconvenience and/or protect the user from harm.
Principle 6 Low Physical Effort The building’s design should employ design features that require little or no physical force to use them (e.g., replacing a traditional door knob with a lever handle that does not require the ability to grasp and turn the wrist). If a low level of force is required, any user should be able to engage the feature without assuming an awkward or hazardous body position (e.g., providing a smooth travel surface with minimal slope along the path of travel leading to the entrance).
4 Moving around outdoors and inside buildings is the quintessential Using activity of urban life. Accessibility of resources, in its broadest sense, Circulation and the mobility required for that access is what cities are all about. Accessibility laws mandate that certain accommodations need to be Systems made for people with mobility and sensory limitations, but, in fact, increasing accessibility for all users should be a primary goal for planners and designers. 21 Exterior Planning and Design Key Design Goals
Designs for outdoor spaces should address individual needs and preferences. They should also ensure the security and safety of all users during all times of normal use.
` Provide a continuous path of travel with no obstacles to any user from site access points to all site destinations.
` Provide security for all users.
Passing spaces at least 60 inches by L Tips: Accessible 60 inches (1525 mm by 1525 mm) located at reasonable intervals that ` Curb ramps on Minimum number of accessible do not exceed 200 feet (61 m) for existing sites can parking spaces accessible pathways with less than have slopes steeper 60 inches (1525 mm) clear width than 1:12 if there At least one accessible pathway are space limitations, from main access points (e.g., Stable, firm, and slip-resistant although a slope can walking surfaces never be steeper subway stations, bus stops, parking than 1:8. lots to the building) to the accessible building entrance they serve Transition height of no more than ¼ inch (6.5 mm) between different ` Between 1:10 and flooring surfaces 1:12 slope allowed Accessible pathways that connect all for a rise of 6 inches accessible buildings and facilities on Pathways steeper than 1:20 meet (150mm) maximum. a site (e.g. site amenities and attractions) different requirements because they ` Between 1:8 and are considered ramps 1:10 slope allowed Clear width of at least 36 inches for a rise of 3 inches (915 mm) Cross slopes not exceeding 1:50 (75mm) maximum. Curb ramp, ramp, elevator, or 22
` Provide illumination at all parking areas, passenger loading zones and along pedestrian pathways.
` Eliminate hazards to passage.
platform lift where changes in level are greater than ½ inch (13 mm) L Tips:
Spaces no greater than ½ inch (13 ` If vertical clearance mm) wide in one direction for along an accessible gratings located on walking surfaces route is below 80 inches (2030 mm), At least 80 inches (2030 mm) provide a barrier vertical clearance that will detectable by a cane for people Objects mounted to the wall with with visual bottom edges between 27 inches impairments. (685 mm) and 80 inches (2030 mm) high from the floor project less than ` Objects mounted with 4 inches (100 mm) from the wall their bottom edge lower than 27 inches (685 mm) are detectable by a cane and may protrude any amount from the wall. 23 Exterior Planning and Design Key Design Goals (continued)
dangerous areas Universal L Tips: Seating areas for resting provided at intervals out of the circulation ` Recreation areas and path historic facilities often Direct access from all access points to include challenging all facilities and building entrances Lighting along pathways reflected paths with steep grades, unpaved All pathways accessible unless there downward onto the path without surfaces, or other are alternative pathways that begin creating hot spots or glare potential obstacles. and end in the same location Information can be Edges of pathways defined with provided to let the Separate pedestrian, vehicular and curbs, contrasting textures or other users know the bicycle/skating pathways with clearly means conditions along such marked boundaries paths so they can Width of the path based on the decide for themselves Emergency communications equipment expected volume and direction whether they want to at strategic locations wherever traverse them. potential security or safety threats Potentially hazardous stairs, ramps may exist and transitions marked with contrasting colors, textures or Video surveillance as a deterrent in materials to alert users 24
Avoid irregular textures, ridges, rough or uneven traveling surfaces and those that have large or protruding L Tips: joints ` If there are steep grades that prohibit Avoid obstructions and hazards that the construction of intrude into the path of travel accessible direct (e.g. drainage grates, signs, paths, provide a short overhanging trees, manholes, light cut with steps for fixtures or benches) people who can walk stairs. Avoid highly reflective surfaces
Also Refer to:
` Parking 25 Mechanical Circulation Key Design Goals Systems
Mechanical circulation systems (e.g. elevators, moving walkways and escalators) are used to transport people to their various destinations. Although fully compliant elevators are part of an accessible path of travel, adding universal design features will provide additional benefits.
Visible and audible signals provided L Tips: Accessible to indicate the direction of the car that is answering the call ` "Up" button must be above the "down" Elevators Hall lanterns mounted at least 72 button. inches (1830 mm) high from its At least one passenger elevator centerline to the floor ` Main entry floor required in all multi-story buildings button of the building with some exceptions Visual elements at least 2 ½ inches should be (64 mm) in the smallest dimension distinguished from the Located along an accessible route and visible from the vicinity of the rest of the buttons. hall call button Elevator cars self leveling with a vertical gap of no more than ½ inch Call buttons raised or flush and at (13 mm) and a horizontal gap of no least ¾ inch (19 mm) in the smallest more than 1 ¼ (32 mm) at the floor direction levels Car doors open and close Hall call buttons centered at 42 automatically and stop instantly and inches (1065 mm) above the floor reopen if the door is interrupted by any object or person 26 Car doors remain open for at least required in buildings that have less 3 seconds when called than 3 stories or have less than 3000 square feet per story unless the Braille, alpha numeric characters building is a shopping mall) and pictograms on control panel for floor and function buttons Platform Lifts
Illumination level of at least 5 At least 30 inches (760 mm) by 48 footcandles (53.8 lux) at the car inches (1220 mm) clearance for a controls, platform, car threshold and person in a wheelchair to reach the landing sill controls and enter lift
Emergency controls and alarms At least 30 inches (760 mm) by 48 grouped at the bottom of the control inches (1220 mm) for platform lift panel Lift controls no higher than 48 inches Floor area that allows maneuvering (1220 mm) for a forward reach and room for wheelchair users to enter 54 inches (1370 mm) for a side the car, reach the controls, and exit; reach center opening door width at least 36 inches (915 mm), cab depth 51 Controls operable with one hand and inches (1291 mm), and cab width at without requiring tight grasping, L Tips: least 80 inches (2030 mm); side pinching or twisting of the wrist opening door width at least 36 ` Lifts are not inches (915 mm), cab depth 54 Change in level no greater than ½ permitted in new inches (1370 mm), and cab width at inch (25 mm) and beveled edge with construction except least 68 inches (1730 mm) a slope of 1:2 or less where lift where no other meets the ground alternative is Elevator controls located no higher possible. If a than 54 inches (1370 mm) above the Escalators and Moving Walkways platform lift is floor for side approach and 48 installed, it must be inches (1220 mm) for front Escalators are not considered usable without approach accessible paths of travel assistance.
At least one passenger elevator Moving walkways are not addressed ` Floors in and serving each level, including in accessibility codes adjacent to the mezzanines in multi-story buildings elevator must be stable, firm, and slip- resistant. If more than one elevator is provided, each one should be accessible (elevators are not 27 Mechanical Circulation Key Design Goals Systems (continued)
` The location and the physical characteristics of lobbies, car and platform interiors, call buttons and control panels should support the usability of mechanical circulation systems.
` Provide escalators and moving walkways to move large numbers of people quickly and overcome long distances.
` Limit the use of platform lifts to provide access to existing buildings where it is not feasible to install ramps.
car allows people who use L Tips: Universal wheelchairs, push strollers or pull wheeled luggage to make a 180 ` Snow can accumulate degree turn under the lift and Elevators they can be very Standard telephone keypad layout uncomfortable when Elevator lobby within short distance to "dial up" the floor desired it is raining. from main building entrance and other main function facilities Contrasts between objects (e.g. ` Lifts are often not doorway frames, calling buttons, used regularly but Clear floor area of the lobby wide faceplate, key numbering) and their when needed, it is enough to allow people to assemble backgrounds or their adjacent important that they and gather prior to entry without environments (e.g., using are operating obstructing the circulation flow complementary colored backgrounds properly. Thus, the to enhance the color tenacity best locations are Clear floor surface of the landing phenomenon) those where their use area wide enough for all users to can be under visual Voice synthesis or recorded surveillance of an approach and use from a forward or announcements to describe the floor employee who can a parallel direction provide assistance if reached and its contents, where needed. Clear floor surface of the elevator applicable 28
Operable parts of all calling buttons Moving walkways that allow use in a and control panels between 35 inches wheeled mobility device L Tips: (890 mm) and 48 inches (1220 mm) to serve all users Inclined moving walkways as ` Telephone keypad alternatives to escalators layouts are well Platform Lifts known to everyone. They reduce the Ensure that power to lifts will not be space needed for inadvertently turned off controls in very tall skyscrapers where Lifts that have a manual override to the number of floors both raise and lower the platform if it exceeds the space malfunctions available for controls on the panel. They Lifts located under overhangs or other also can be kept climate protected areas for outdoor within a more placement comfortable reach range. Escalators and Moving Walkways
Elevators in proximity to escalators where they are provided 29 Ramps and Stairs Key Design Goals
Many buildings have level changes beyond the allowable height. When an elevator is not a practical solution (e.g. change in level of a few inches), designers frequently use ramps or stairs to provide access to these areas. Even though the change in level may be slight, if not designed properly, people can find negotiating ramps and stairs difficult and dangerous.
L Tips: Accessible Clear space of 1-1/2 inches (38 mm) is provided between handrails and ` A broom finished All steps with uniform riser heights adjoining walls concrete ramp is and uniform tread widths considered Where handrails end, they extend sufficiently slip No open risers on stairways 12 inches (305 mm) beyond the top resistant to comply riser of the stairs and the landing of with accessibility the ramps and 12 inches (305 mm) codes. At least 11 inches (280 mm) for stair treads depth measured from riser to plus the width of one tread beyond the bottom riser ` Continuous handrails riser at both sides and Ramp at least 36 inches (915 mm) ends of handrails, Nosings that project no more than 1 wide and landing at least 60 inches have unobstructed ½ inches (38 mm) and have by 60 inches (1525 mm by 1525 gripping surfaces and undersides sloped at 60 degrees are rounded or from the horizontal mm) returned smoothly to floor, wall or post. Handrail height between 34 inches Protect pedestrians from hitting their and 38 inches (865 mm and 965 heads on the underside of free mm) standing stairways 30
` Where stairs are provided, they should be as safe as possible for all people who may choose to use them.
Slip resistant traveling surfaces without impeding the mobility of L Tips: Universal wheelchairs, strollers and other wheeled devices ` Avoid winders and curved stairways. Treads on stairways no deeper than The easiest way to Ramps and stairways wide enough 14 inches (355 mm) and risers ` measure a ramp to accommodate the expected between 4 inches (100 mm) and 7 slope is by using a traffic flow which may exceed inches (180 mm) high minimum required width digital level. Make sure the level is Tactile indicators on railings like calibrated properly Stairways have no more than 10 grooves or bumps to mark the and test the slope in risers between landings beginning and end of a stairway, at least three places; changes in direction or location of near the bottom, the Seating at landings of long ramps specific facilities middle and the top. and stairways Use the steepest Ramps with a less than 1:12 slope, which slope as the actual Handrails, treads and walking are more manageable measurement since surfaces evenly illuminated without the slope of the ramp strong shadows can vary along its length. 31 Hallways and Corridors Key Design Goals
Although hallways and corridors are often thought of as transitional spaces that connect rooms, they can be a challenge if not designed properly. Poor lighting, protruding objects and narrow spaces are just a few features that can render hallways and corridors both dangerous and unusable.
L Tips: Accessible
` Avoid carpet and Minimum clear width of 36 inches Stable, firm and slip-resistant floor underlayment (915 mm) except at doors surfaces combinations that are susceptible to Passing spaces at least 60 inches Carpet with no more than pile height buckling. They can (1525 mm) by 60 inches (1525 mm) of ½ inch (13 mm) and is securely cause tripping and wide at reasonable intervals not fastened to the floor impede the use of wheeled mobility exceeding 200 feet (61m) apart devices. where an accessible route is less Objects with leading edges between than 60 inches (1525 mm) wide 27 inches (685 mm) and 80 inches ` Intersections of (2030 mm) protrude no more than 4 corridors can serve Clear width of at least 32 inches inches (100 mm) into hallways or as passing places as (8155 mm) at doorways corridors long as each connecting link is at At least 80 inches (2030 mm) Exterior stairs designed so water least 36 inches (915 minimum clear headroom at hallways does not accumulate on walking mm) wide. and corridors surfaces ` 32
` Provide comfortable and easy movement throughout the building.
` Use markers, signs, and other information devices to facilitate wayfinding.
Universal L Tips:
Detectable warnings Stairways kept out of the direct path Paths of travel distinguished with ` are textured surfaces of travel material, floor textures or color applied to help differences to assist in orientation people with severe Ramps running in the direction of visual impairments normal travel locate hazardous areas in the path of Hallways and corridors wide enough travel. for two people traveling in the opposite direction to pass each ` Exterior stair treads other can be sloped slightly to drain. All corridors and hallways evenly illuminated ` Drains can be located to drain Gradual transitions from dark to movewater away bright spaces, especially those that Also Refer to: from the bottom have high levels of natural landing of the stairway. illumination ` Entering and Exiting 33 Street Crossings Key Design Goals
Traffic intersections often pose serious safety concerns for people of all abilities. However, these fears are often exacerbated for people with limited abilities. Improvements to intersections' signage, as well as the condition and length of street crossings can help to alleviate these concerns.
` Provide continuity for pedestrians by bridging vehicular areas with a safe, accessible path of travel.
L Tips: Accessible Universal
` Diagonal curb ramps are allowed by Curb ramps located within the Reduce pedestrian crossing accessibility codes boundary of the marked safe distance on major crossing routes by but are not crossing area including any flared providing expanded corners and/or recommended. If they sides safety islands are used, a 48 inch (1220 mm) long run- Gratings located on walking Storm drains located outside marked off area should be surfaces with spaces no greater than crossings provided within the ½ inch (13 mm) wide in one safe crossing area at direction Clearly mark boundaries of the bottom of the crossings using permanent materials curb ramp. Islands that occur within the path of like thermoplastic strips or a change a marked crossing are cut through of paving material, e.g. brick in ` Place gratings with level with the street or have curb contrast to concrete or asphalt elongated openings, ramps at both sides and a level roadways so that the long area of at least 48 inches (1220 dimension is Pedestrian crossing signals provide perpendicular to the mm) between the curb ramps dominant direction of enough time for slower moving travel. people to cross 34
Visual and auditory crossing signals "All stop" signal period when at all busy crossings traffic from all directions comes to L Tips: a stop and pedestrians can cross in Higher illumination levels in the safe any direction within the intersection, ` Talking Signs® or crossing area including diagonally. This reduces "remote infrared the number of pedestrian crossing signage," use infra-red Signals timed to insure that slower cycles by 50% although transmitters and special moving pedestrians will be able to pedestrians have to wait longer receivers to communicate orientation cross the street safely between cycles and direction information. The City of Sonic beacons or Talking Sign® San Francisco has technology installed to guide people implemented talking with visual impairments across the signs at many street intersections in the downtown area. They Use pedestrian barriers to control provide more crossing locations in areas where information than sonic there are particularly high levels of beacons and can pedestrian traffic that overload provide very precise sidewalks and add to traffic directional information. congestion www.talkingsigns.com 35 Curb Ramps (Curb Cuts) Key Design Goals
A curb ramp is one tool that can improve the safety and usability of traffic intersections. In addition to enhancing pedestrians' safety, curb ramps permit people using wheelchairs or pushing a stroller to more easily cross the street.
` Design curb ramps to promote pedestrian safety and provide a smooth transition in level changes.
Stable, firm and slip resistant surface L Tips: Accessible Flared sides with a maximum flare ` Built-up curb ramps slope of 1:10 where pedestrians must should not project into Provided whenever an accessible walk across a curb ramp vehicular traffic. pathway meets a curb Narrow curb ramps located to the Slopes no greater than 1:12 side of marked crossings wherever an accessible route crosses a curb Curb ramps located where they will not be obstructed by parked vehicles Flush transitions at the top and bottom without abrupt changes Safe islands in crossings cut through level with the street or have curb Maximum slopes of adjoining road ramps on both sides and a level area surfaces not exceeding 1:20 of at least 48 inches long between the curb ramps in the part of the Width of the curb ramp, not including island intersected by the crossings the flared sides, at least 36 inches (915 mm) 36
Bollards and chains used to protect Universal pedestrians where there are no L Tips: sidewalks to separate vehicular and pedestrian traffic. This approach ` Cane and guide dog also helps people with visual users are trained to Curb ramp design standardized impairments find street crossings find curbs at the throughout a site, an urban district or edges of sidewalks. However, where there a city Returned curbs without flares where are no curbs, like at pedestrians would not normally walk curb ramps, there is Detectable warnings extending the across the ramp, for example, where full width and depth of the curb concern that the cane there are plantings or utility poles traveler may miss the ramp, contrasting in color with the on both sides of the curb ramp walking surface and constructed edge of the sidewalk from a material that provides a and step out into traffic. distinctly different sound when tapped by a cane
Eliminating curbs entirely at intersections where unimpeded flows of pedestrians are desirable 37 Escape and Refuge Key Design Goals
In all facilities, especially multi-story buildings, emergency egress is a major concern. While codes have requirements to help people exit a building quickly and safely, they neglect the fact that everyone is “impaired” during an emergency situation since conditions are unusual.
` Provide both good escape routes and places of refuge for emergency use.
entry with both audible and visual L Tips: Accessible signals
` Local authorities may "Area of Rescue Assistance" sign with reduce the minimum At least two areas of rescue the International Symbol of number of wheelchair assistance with waiting spaces for at Accessibility in each area of refuge spaces to one for least two wheelchairs within a smoke each area of rescue proof enclosure at all floors except Area of rescue assistance sign assistance on floors those that have accessible means of illuminated when required and where the occupant egress additional signage posted at load is less than 200. inaccessible exits indicating the No less than 30 inches (760 mm) by direction of areas of rescue ` The fire department 48 inches (1220 mm) space for each assistance or other local wheelchair to be accommodated authority may Areas of rescue assistance with approve a location At least one wheelchair space for instructions for use during an for two-way every 200 people per story communication device emergency other than at a Two-way communication device primary entry. provided between the area of rescue assistance and the primary 38
Evacuation plan for people who need assistance in an emergency L Tips: Universal Directional signage when the ` Facilities should keep direction of emergency egress is not a list of all people easy to understand who work or live in All accessible entrances designed to the building who would need help serve as emergency egress routes as Visual and audible signaling systems well leaving in an under fire service control to help emergency. It should direct people along the best route Reserved stairway for the fire indicate the floor and given the building condition at any location so firemen service one time know where people may be waiting for Total building sprinkler system Public address system for use by the help. fire service to give instructions during Elevators designed to be safe for an emergency ` Since smoke rises, emergency egress emergency exit signs Supplemental illuminated exit signs at low levels are Two-way emergency communications near floor level easier to see when in all remote areas trying to escape a building during a fire. `
5 The act of entering and exiting a building is more involved than simply Entering and opening and closing a door. There are many variables involved in the Exiting process that can cause difficulty for even the most intelligent and able- bodied person. Prior to entering a building, users must determine where they are, locate where they want to go, establish the best route to get there, locate the appropriate entrance and negotiate the path of travel to the entrance. Once they arrive at the entrance area, users must attempt to proceed through the doorway to enter the building and eventually find their way out. Accomplishing all of these tasks successfully and in a timely manner in a complex building can be challenging, but a well-designed circulation system can make the process more manageable. 41 Finding the Building Key Design Goals
People who are unfamiliar with a facility need to identify their destination in order to devise a strategy for finding it. Once they have a plan, they must execute it without becoming disoriented. Architectural elements, landmarks, signs and other universal design features all play an important role in determining how easily users find destinations.
` Establish a circulation system that provides a direct path of travel to
L Tips: Accessible
` When using signs The ADA Guidelines and other and other visual cues, it is important to accessibility codes do not include avoid visual clutter. standards for locating destinations, Too many signs not although if signs are used, they only detract from the must comply with rules for aesthetic quality of a character proportion, character space, but can be height, finish, and contrast overwhelming and create unnecessary confusion.
Also Refer to: ` Wayfinding 42
all facilities and is identifiable, understood and usable to everyone.
` Provide a comprehensive sign system that includes directories, maps, and graphics to assist in finding destinations.
` Include key landmarks in the site or building design.
Universal L Tips:
Signs at major vehicular entrances Landmarks such as canopies, plazas, ` The concourse of The that are simple, functional and columns, fountains, flagpoles, statues, Lincoln Center for the readable at distances and speeds etc., that add identifiable features Performing Arts is an effective landmark. A of moving vehicles to buildings large circular fountain is located near the Immediate and easily detectable Building names and logos in large drop off area on information center provided at size mounted in locations where Columbus Avenue prominent site entry points and they can be easily seen from and is visible from other decision making areas primary vehicular and pedestrian most areas within the access routes multi-level complex. Talking Signs® that help provide With many buildings directions and identify objects for and plazas on the people who are visually impaired site, it is a valuable physical landmark Orientation maps for motorists, and a highly visible pedestrians and bicyclists at major point of reference. intersections 43 Identifying the Entrance Key Design Goals
After finding the building, users must be able to identify where the entrances are before approaching. At large complex sites, the task of locating entrances and exits can be challenging, especially when there are multiple points of entry/exit or visitors are unfamiliar with the layout. This is particularly relevant to those people arriving by automobile. Motorists typically try to unload people as close to an entrance as possible, so they must be clearly identifiable from a distance.
L Tips: Accessible
` The key to making entrances identifiable No accessibility requirements that is to provide visual address identification of entrances interest. One method and exits from the exterior for doing this is to provide an entrance Accessible entrances marked with the atrium that not only International Symbol of Accessibility introduces natural light if not all are accessible into the building but also reveals activity Sign directing people to an inside the building. accessible entrance if entrance is They not only serve not accessible as landmarks and enhance wayfinding for those approaching but also function as a Also Refer to: recognizable point of reference to people ` Circulation within the building. Wayfinding 44
` All public entrances recognizable to all types of users regardless of their abilities.
` Entrances clearly distinguishable for both people arriving by foot or automobile.
Universal L Tips:
` Many facilities have Directional signage that guides Clear visual access to building a main entrance users towards entrances and exits entrances from points of site entry which they use as a formal entrance for Higher than normal lighting levels at Alternative glazing applications the public and entrances to make it easier for users that make entrances distinguishable secondary entrances, to identify points of entry and to when glass panels are used on which are purely enhance safety the building facade functional and used by staff. When there Materials, color and form to Non-reflective glass and other are multiple building differentiate the entrance from the surfaces to prevent them from entrances, they should rest of the building becoming a source of glare be clearly identified with signs to describe Different roof line above entrance Paving, plant material, and other their function, e.g. "Delivery Entrance," to create a hierarchy among the site elements that can be used to "Staff Entrance," and parts of the building guide pedestrians "Visitor Entrance." 45 Approaching the Entrance Key Design Goals
Once the user identifies the point of entry or exit, they must be able to navigate to their intended destination. Accessibility requirements for paths of travel address the actual routes one would take in approaching the door and ensure that there are no obstructions or level changes that would impede access. But access codes do not address user preferences and decision- making abilities. Although standards are necessary for ensuring basic access, they only address the needs of a portion of the population. Incorporating universal design
L Tips: Accessible
` Many older buildings At least one accessible route within 60 inches (1525 mm) clear width, have grand staircases the boundary of the site from public passing spaces at least 60 inches at the front entrance transportation stops, accessible (1525 mm) by 60 inches (1525 mm) that designate the parking spaces, passenger loading located at reasonable intervals not main point of entry. zones, and public sidewalks to an to exceed 200 feet (61 m) Although this feature accessible building entrance makes them easily identifiable, they are Cross slope of an accessible not usable by people All accessible spaces, venues, and pathway not exceeding 1:50 who cannot climb elements within the facility or site stairs. When connected with an accessible path of alternative public travel entrances are designated for Clear width of pathways at least accessibility, routes 36 inches (915 mm) wide should be at least as convenient to those Accessible pathways with less than serving the primary entrance. 46
features relating to spatial organization, multi-sensory information, etc., will improve users' abilities to easily approach the entrance or exit.
` Enable all users to approach entrances or exits with clearly perceptible spatial organization.
` Make facilities manageable and safe to both pedestrian and vehicular traffic.
` Design pathways that facilitate ease of movement without any obstructions or abrupt change in level.
Universal L Tips:
Smooth, paved pedestrian pathways Surfaces that are slip-resistant and ` Wherever paths of approaching all buildings to support prevent water from accumulating travel are sloped, provide a level easy movement surface at the Tactile guide strips that have raised beginning and end Waiting areas along lengthy paths markers indicating a safe path of of the grade change. that don’t obstruct movement travel The landing area should not infringe on Gradual slopes for grade changes Heated walkways that eliminate maneuvering space. that are not greater than 1:20, slipping hazards eliminating the need for a ramp ` Transitional space with handrails Adequate illumination along all between interior and pathways and stairs that prevent exterior environments Pathways free of overhanging trees, accidents after dark could take place bushes, debris, and other temporary indoors (as a bright, barriers that impede people from In large buildings, at least two temperate foyer or using them doors designated as either "entry" atrium) or outdoors or "exit" for traffic traveling in (as a shaded or opposite directions sheltered walkway). 47 Maneuvering Key Design Goals Through the Entrance or Exit Often the impediment to using an entrance or exit is the width of the doorway. Although the ADA Guidelines have minimum requirements for door openings, many people still have difficulty negotiating entries. The clear opening requirement of 32 inches (815 mm) accommodates average sized wheelchairs, which are 25 inches (635 mm) to 28 inches (712 mm) wide, but wheelchairs are available from 20 ½ (525 mm) inches to 34 ¾ inches (885 mm) wide. People who use larger wheelchairs find it difficult, if not impossible, to maneuver through many doorways without hitting their elbows or causing damage to door frames.
L Tips: Accessible If the doorway has two independently operated door leaves, at least one active leaf that provides ` Door force can be No revolving doors and turnstiles a 32 inch (815 mm) clear opening measured with a door force gauge. as part of the accessible route unless and adequate maneuvering there is an accessible door or gate clearance ` If there is a raised adjacent that facilitates the same threshold at the door, use pattern If there are two doors in series, clear the installation of an space between the walls at either aluminum or vinyl When a door is open 90 degrees, end of the vestibule at least 48 threshold ramp will a clear opening at least 32 inches inches (1220 mm) plus the width of eliminate the vertical (815 mm) measured between the any door swinging into the space change in level face of the door and the door stop without interfering on the latch side Doors in a series to swing in the with the swing of the same direction or away from the door. When openings are more than 24 space between them inches (610 mm) in depth, clear width of at least 36 inches (915 mm) Handles, locks, and latches operable with one hand and without requiring Maneuvering clearances at doors as tight pinching, tight grasping or illustrated on the next page twisting of the wrist 48 Doors not used for passage Pull Side Push Side (e.g. a closet door), width no smaller than 20 inches (510 mm) but maneuvering clearances required X = to open a door still apply 12” MIN
Hardware mounted no higher than 48 inches (1220 mm) above the floor (also applies to locks on doors, including dead bolts and chains) A B
A period of at least 3 seconds for Front Approach a door with closing hardware to move from 70 degrees open to a point 3 inches (75 mm) from the latch Pull Side Push Side Door opening force of 5 lbf (22.2N) minimum for interior doors 54” MIN Compliance with ANSI/BHMA 42” MIN A156.10 for automatic doors
For low powered or power-assisted C D doors, compliance with ANSI/BHMA A156.19; opening time no faster than Hinge Side Approach 3 seconds, no more than 15 lbf (66.6N) to stop door movement Pull Side Push Side Notes for Figures at right:
B: Latch side clearance (X) only required if door has both a closer and a latch.
C: Latch clearance can be reduced 6 in. (155 mm) if depth clearance is increased 6 in. (155 mm).
D: Add 6 in. (155 mm) to depth E F clearance if door has both a closer and a latch. Latch Side Approach E: Add 6 in. (155 mm) to depth clearance if door has a closer. ADA Guidelines for Maneuvering Clearances at Doors 49 Maneuvering Through the Key Design Goals Entrance or Exit (continued) People who use wheelchairs are not the only ones who have difficulty maneuvering through doorways. People carrying packages, pushing strollers, arthritis sufferers, small children, etc., also experience some difficulty. This may not be the result of door width but some other variable including inadequate maneuvering clearances, hardware, thresholds, door force, etc.
` Provide adequate clearances for approach and continuous pass-through for all users.
L Tips: Universal
` Automatic doors, activated through Wider openings and maneuvering While the height requirement for floor mats or sensors clearances at doors that hardware also applies to peepholes are most often used accommodate different users and in the door, two peepholes to be in facilities with styles of movement (e.g. a person installed for use from both seated heavy traffic (e.g. in a wheelchair, a person with a dog, and standing positions airports, hospitals, a child in a stroller, adults carrying hotels, supermarkets, bags of groceries, etc.) Glazing in doors to see people high rise office approaching from the other side towers, retail stores, Lightweight doors that can be opened etc.). Power-assist and closed with very little force Metal kick plate installed on the doors, activated by bottom of the door that prevents a push pad or button, Automatic sliding doors that open scratches and other abrasions by are designed for a without any effort users employing wheeled devices lower level of use (e.g., shelters, Push-type, lever, or U-shaped handles apartment buildings, health clubs, etc.). that can be operated easily by someone with poor hand strength Case Study: ADA vs. Universal
ADA Compliant Door Although the entrance shown in figures 1, 2 and 3 meets all the requirements of the ADA Guidelines, they illustrate the concept that people who use wheelchairs are not the only ones who have difficulty maneuvering through doorways.
1 4 As illustrated in figure 1, a person pushing a baby stroller encounters some difficulty when trying to enter. Although there is adequate maneuvering clearance, it is difficult to hold the door open and maneuver the stroller through the doorway at the same time. As illustrated in figure 2, the person is forced to hold the door open with her foot so she can use both hands to propel the stroller. Figure 3 reinforces the difficulty encountered and effort 2 5 required. ADA Compliant Door with Universal Maneuvering through a Design Features doorway can be easier with Figures 4 and 5 depict the same person the addition of universal pushing a stroller through the entrance design features. and exit with ease and convenience. The automated sliding doors are activated by a motion sensor when she approaches. Automated doors are a good example of universal design because they enable all people, 3 regardless of their ability, to open the doors without effort. 51 Departing the Entrance Key Design Goals and Exit Area Strategies for successfully exiting a building are similar to those for entering, except that egress is sometimes done under emergency circumstances. When a crisis occurs and egress must be swift and under difficult conditions, finding one's route can be problematic. Although primary entrances can be used as a means of egress, current fire regulations and building codes have specific requirements for locations of emergency exits. While these standards are implemented to ensure the overall safety of the building occupants, the task of finding these unfamiliar and seldom
L Tips: Accessible
` The New York City Building Code has Accessible spaces located along an Directional signage posted at all provisions for means accessible route to emergency exits inaccessible exits indicating the of egress that are not or accessible area of rescue direction to areas of rescue assistance specifically assistance mentioned in the Each door along a means of egress ADA Guidelines, but Accessible means of egress not providing clear opening width and are applicable to required in alterations to existing maneuvering clearances all buildings. For buildings additional A horizontal exit, meeting the requirements that go Accessible means of egress equal requirements of local building/life beyond those listed, to the number of exits required by safety regulations can satisfy the refer to the most local building/life safety regulations requirement for an area of rescue recent version of the for each occupiable level of a assistance New York City building or facility except in Building Code. alterations to existing buildings Areas of rescue assistance (ARA) are not required in buildings or facilities having a supervised automatic sprinkler system 52
used locations is difficult for most users. This difficulty is heightened in stressful situations that are likely to limit mobility and sensory abilities.
` Locate means of egress where they are detectable and usable from all locations in the building.
` Design configuration of exits should enhance users' orientation, prevent expected congestions and enhance the safety of user groups, particularly during emergency situations.
Universal L Tips:
` In facilities that All the entrances designed to Multi-sensory indicators that help primarily serve be usable for both normal and detect the exits of a building children, provide emergency egress situations design features at All automatic doors with a fail-safe different scales (e.g., Pathway lighting system used mode so that when power fails, they toilets, drinking exclusively during emergency still can be used to exit fountains, tables and that guide users to exits or to chairs, etc.). In the the nearest area of rescue example above, this building has two Clearly detectable audible sized automated doors, which provide messaging system that convey options for entering directional information and exiting. Also Refer to: Human assistance and evacuation plans in place for people unable ` Circulation to navigate independently
6 Design for wayfinding includes the communication of information to assist Wayfinding the building user in finding destinations and understanding where they are at all times (orientation). This involves both design of building features that assist users to find their way and maintain their sense of orientation as well as direct delivery of information. Thus there are two types of wayfinding design strategies that reinforce and complement each other architectural wayfinding design and information wayfinding design. All strategies used for wayfinding should communicate effectively to the broadest group possible including people with a wide range of sensory abilities, intellectual abilities, literacy levels, languages and Unfamiliar environments make physical statures. special demands upon us. Even the simplest of settings can Certain architectural and interior design features help users to involve a jumble of information construct a mental map by creating familiar models of how space that has to be sorted and is organized, by supporting access to information in all the senses processed before it becomes and by distinguishing one place from another. There are five meaningful attributes of buildings that support the construction of accurate mental maps: (1) clearly defined paths and circulation systems, Dorothy Pollet and (2) markers that stand out from the general background stimuli, Peter C. Haskell (3) recognizable nodes where paths intersect, (4) strong edges like walls or landscape features, and (5) well defined zones/districts. 55 Paths/Circulation Key Design Goals
Paths, including walkways, hallways and corridors, generally define the circulation system in a building or a site. Usually the path system is organized into one of many common models. If users know which one is used, they can anticipate and predict where paths will lead. Clearly defined paths help people find their way more easily. In complex buildings and sites there are usually two orders of pathways: main pathways that connect major spaces, and secondary pathways that lead from primary paths to less important destinations. Differences between the two orders of paths and individual paths within
Accessible Universal
No ADA Guidelines that address At least one key circulation node to architectural wayfinding design help people understand where they are in the building through reference to that point
An easily identifiable circulation plan that users can understand from their initial contact, e.g. single loaded corridor, double loaded corridor, racetrack layout, etc.
Primary paths that are different in design than secondary pathways, e.g. wider, have higher ceilings, different color scheme and different lighting 56
each order help people remember their journey through the circulation system.