AS PUBLISHED IN THE FEDERAL REGISTER
JULY 26, 1991
Americans with Disabilities Act (ADA)
Accessibility Guidelines for Buildings and Facilities
U.S. Architectural & Transportation Barriers
Compliance Board
1111 18th Street, N.W., Suite 501
Washington, D.C. 20036-3894
(202) 653-7834 v/TDD
(202) 653-7863 FAX
ADA ACCESSIBILITY GUIDELINES FOR BUILDINGS AND FACILITIES
TABLE OF CONTENTS
1. PURPOSE 1
2. GENERAL 2
2.1 Provisions for Adults 2
2.2* Equivalent Facilitation 2
3. MISCELLANEOUS INSTRUCTIONS AND DEFINITIONS 2
3.1 Graphic Conventions 2
3.2 Dimensional Tolerances 2
3.3 Notes 2
3.4 General Terminology 2
3.5 Definitions 3
4. ACCESSIBLE ELEMENTS AND SPACES: SCOPE AND TECHNICAL REQUIREMENTS 7
4.1 Minimum Requirements 7
4.1.1* Application 7
4.1.2 Accessible Sites and Exterior Facilities: New Construction 9
4.1.3 Accessible Buildings: New Construction 11
4.1.4 (Reserved) 18
4.1.5 Accessible Buildings: Additions 18
4.1.6 Accessible Buildings: Alterations 18
4.1.7 Accessible Buildings: Historic Preservation 23
4.2 Space Allowance and Reach Ranges 25
4.3 Accessible Route 26
4.4 Protruding Objects 29
4.5 Ground and Floor Surfaces 30
4.6 Parking and Passenger Loading Zones 30
4.7 Curb Ramps 31
4.8 Ramps 32
4.9 Stairs 34
4.10 Elevators 35
4.11 Platform Lifts (Wheelchair Lifts) 38
4.12 Windows 38
4.13 Doors 39
4.14 Entrances 41
4.15 Drinking Fountains and Water Coolers 41
4.16 Water Closets 42
4.17 Toilet Stalls 42
4.18 Urinals 43
4.19 Lavatories and Mirrors 44
4.20 Bathtubs 44
4.21 Shower Stalls 45
4.22 Toilet Rooms 46
4.23 Bathrooms, Bathing Facilities, and Shower Rooms 47
4.24 Sinks 48
4.25 Storage 48
4.26 Handrails, Grab Bars, and Tub and Shower Seats 49
4.27 Controls and Operating Mechanisms 50
4.28 Alarms 50
4.29 Detectable Warnings 52
4.30 Signage 52
4.31 Telephones 54
4.32 Fixed or Built-in Seating and Tables 55
4.33 Assembly Areas 56
4.34 Automated Teller Machines 57
4.35 Dressing and Fitting Rooms 57
5. RESTAURANTS AND CAFETERIAS. 58
6. MEDICAL CARE FACILITIES 59
7. BUSINESS AND MERCANTILE 61
8. LIBRARIES 63
9. ACCESSIBLE TRANSIENT LODGING 63
10. TRANSPORTATION FACILITIES 69
APPENDIX 70
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