The new Americans with Disabilities Act has some interesting techical changes. This Blog
will explain some of the changes. For a summary of the Scoping changes please read the
past Blog post
Summary of Technical Changes
Most of the technical guidelines are very similar to the original ADAAG, but there is a few
minor changes and additions to the entire document. Below are a few of the changes that
1) In the new techical chapters the main changes is the re-formating to meet the numbersing
system of the ANSI. They have grouped sections together that make more sense, like all
plumbing fixtures under chapter 6.
2) New ranges where originally being absolute dimensions and lowering the existing ranges
are two new changes. For example they lowered the maximum height for side reaches from
54 to 48 inches (308.3.1)
3) Chapter 4 eliminates the texture and contrasting color for the curb ramps. This issue is being
addressed by the Department of Justice and will have new ruling from that agency. They also
are requiring a 36" landing on top and bottom of the ramp.
4) The parking spaces and access aisle for vans has been changed so that instead of the van
accessible aisle to be 96" wide, now it is 5'-0" but the van space is 132" wide.
5) They added a range to the distance for water closets from the wall to their center line and
made it 16"-18".
6)The clear floor space at water closets is now only allowed to be 5'-0" wide x 56" min. It can
no longer share space with a lavatory.
7) Childrens heights for water closets were added
9) An exception allows for a parallel approach at kitchen sinks if there is no cook top or range.
10) Signage now has a range for mounting heights from 48" to 60" and an 18" clear floor
space centered on the sign is required.
For more information on the changes, The ADA Companion Guide is a comprehensive
explanation of the new ADAAG.