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Comparison: 2010 and 1991 ADA Standards for Accessible Design - Scoping Requirements

This document on scoping requirements and its companion document on technical requirements were created as references to understand the differences between the 1991 and the 2010 ADA Standards for Accessible Design. The documents only include sections of the Standards that are new or different.

These documents are intended as informal guidance; they have not been reviewed by any federal agencies.

205 Operable Parts

1991 Standards for Accessible Design

2010 Standards for Accessible Design

What’s New/Different

4.1.3(13) Controls and Operating Mechanisms

205 Operable Parts


4.1.3(13) Controls and operating mechanisms in accessible spaces, along accessible routes, or as parts of accessible elements (for example, light switches and dispenser controls) shall comply with 4.27.

4.27.3 Exception:  These requirements do not apply where the use of special equipment dictates otherwise or where electrical and communications systems receptacles are not normally intended for use by building occupants.

205.1 General: Operable parts on accessible elements, accessible routes, and in accessible rooms and spaces shall comply with 309.


1. Operable parts that are intended for use only by service or maintenance personnel shall not be required to comply with 309.

Exception clarified and organized in one location.


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