ICC A117.1 100%

Comparing accessibility standards

Lesson 12: A117.1 compared to the 2010 ADA Standards, TAS, and UFAS

A117.1 vs. ADA Standards, TAS, UFAS · 20 practice questions

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Reading

Across eleven lessons, this course has treated A117.1 as though it were the only accessibility document GCHS staff will ever meet. It is not. GCHS's work touches HUD-funded programs, TDHCA-funded programs, and Texas commercial and public projects, each of which may point to a different document, or more than one at once, as the actual governing standard. This closing lesson steps back from A117.1's own numbers and looks at what A117.1, the 2010 ADA Standards, the Texas Accessibility Standards (TAS), and the Uniform Federal Accessibility Standards (UFAS) each are, legally, and how they relate to one another. This lesson deliberately does not restate specific numeric differences between A117.1 and the other three documents; those deltas were not independently verified for this course, and stating one without verification would risk teaching a wrong number as though it were settled fact. What matters here is structural: what each document is, and how it becomes enforceable.

A117.1 is a referenced standard, not a code

A117.1 has no legal force of its own. It is a technical standard that says it is intended for adoption by government agencies and by organizations setting model codes (Section 102.1), and it leaves the scoping to the administrative authority (Section 201). On its own, sitting outside any adopting code or program, A117.1 does not require anyone to build anything. That is a real, structural difference from the other three documents covered in this lesson.

The ADA Standards and TAS apply through their own regulations

The 2010 ADA Standards apply to the extent required by regulations that federal agencies issue under the Americans with Disabilities Act (Section 101.1 of that document). They take legal effect through those regulations, not by waiting for a local building code to adopt them. TAS works the same way inside Texas: TDLR issues it under Texas Government Code Chapter 469, and it applies to the extent required by TDLR's regulations. TAS states that it is intended to be consistent with the 2010 Standards and is generally the same except where its text marks a Texas change. Covered entities must also meet the federal ADA regulations in addition to TAS (Advisory 101.1 in each document). Both documents stand on their own legal footing in a way A117.1 by itself does not.

UFAS reaches housing work through Section 504

UFAS was written under the Architectural Barriers Act for buildings that are federally funded or constructed. It reaches GCHS-type work through Section 504 of the Rehabilitation Act: HUD's Section 504 rule, 24 CFR 8.32, treats design, construction, or alteration in conformance with UFAS as complying with HUD's accessibility requirements for federally assisted housing. HUD has also issued a notice, effective May 23, 2014, that lets recipients use the 2010 ADA Standards as an alternative to UFAS, with listed exceptions, so the funder or program decides which one applies. Where the ADA Standards and TAS attach through general regulation, UFAS attaches through the funding relationship, which is exactly the kind of connection that shows up on GCHS's federally funded rehabilitation work.

How current codes bring A117.1 into force

Model building codes in the IBC family reference A117.1 for the technical criteria of building accessibility, and each edition of a code names the edition of A117.1 it references. That reference is what gives A117.1's technical content legal weight on a given project: not A117.1 itself, but the code that points to it. Confirming which edition of the IBC, and therefore which edition of A117.1, a jurisdiction has actually adopted is a separate question from what this course covers, and worth checking on any specific project. This course covers the 2017 edition.

Texas's path: TDLR and TAS

In Texas, the accessibility standard for covered commercial and public projects is TAS, issued by TDLR under Government Code Chapter 469 and reviewed through TDLR's process. Its text is based on the 2010 ADA Standards, not on A117.1, so an A117.1 dimension is not a TAS dimension even where the two happen to agree. TAS is the document TDLR applies to those Texas projects, and the federal ADA regulations apply separately, so a project has to satisfy both.

The only document with a formal dwelling-unit taxonomy

A117.1 is the only one of the four documents covered in this lesson with a formal Accessible, Type A, Type B, and Type C dwelling-unit taxonomy, the framework Lessons 9 through 11 covered in depth. The 2010 ADA Standards do not use that taxonomy. Their Section 233 scopes residential dwelling units with mobility features and units with communication features, and Section 809 gives the technical requirements, with Section 233.2 sending entities subject to HUD's Section 504 regulations to HUD's rules for the numbers. TAS has its own Sections 233 and 809, and its Section 233.2 defers HUD Section 504 entities to HUD's regulations. UFAS takes yet another path, using its own dwelling-unit language in Section 4.34, without any Accessible, Type A, Type B, or Type C tiers.

Why staff should never assume a number carries over

Because these four documents have different legal roles and, in UFAS's and the ADA Standards' case, entirely different residential frameworks from A117.1's, a specific dimension from one document should never be assumed to apply automatically under another. The right habit is to confirm which standard actually governs a given funding source or jurisdiction first, then look up that standard's own number, rather than treating the four as interchangeable because they often address similar situations.

What this course covered

Across twelve lessons, this course walked through A117.1's building- block chapters (space allowances, reach ranges, protruding objects, changes in level), the accessible route and its doors, ramps, stairs, and elevators, toilet and bathing rooms with their water closets, lavatories, and grab bars, kitchens and operable parts, and signage and communication features, before turning to Chapter 11's dwelling- unit framework: Accessible units at full accessibility, Type A units as an adaptable near-equal, and Type B units as the widely distributed visitable baseline, with Type C introduced as background awareness. This final lesson placed all of that inside the larger legal picture: A117.1 as the referenced technical standard behind much of it, and the ADA Standards, TAS, and UFAS as the documents that actually make accessibility requirements enforceable on a given GCHS project.

Key distinctions

A117.1 is a referenced technical standard with no legal force of its own; the administrative authority supplies the scoping. The 2010 ADA Standards apply through regulations federal agencies issue under the ADA, and TAS applies through TDLR's regulations under Texas Government Code Chapter 469. UFAS was written under the Architectural Barriers Act and reaches housing work through HUD's Section 504 rule (24 CFR 8.32); HUD's 2014 notice also allows the 2010 ADA Standards as an alternative. IBC-family codes reference A117.1, and each edition names the A117.1 edition it uses. TAS is based on the 2010 ADA Standards, not on A117.1, and the federal ADA rules apply separately from TAS in Texas. A117.1 alone has a formal Accessible/Type A/Type B/Type C dwelling-unit taxonomy; the 2010 ADA Standards and TAS scope residential units in Sections 233 and 809, and UFAS uses its own Section 4.34 dwelling-unit language without those tiers. No specific numeric deltas between A117.1 and TAS, UFAS, or the ADA Standards are stated in this lesson; they were not independently verified for this course.

Why this matters for GCHS

GCHS's construction management, inspection, and estimating role means staff are checking plans against whichever standard actually governs, not doing the hands-on plumbing or electrical work themselves, which makes getting the governing document right a paperwork and judgment question as much as a technical one. Before applying any specific number on a HUD-funded, TDHCA-funded, or Texas commercial project, always confirm which standard actually controls that funding source or jurisdiction. Do not assume A117.1, the ADA Standards, TAS, and UFAS are interchangeable just because they often address the same kind of requirement; confirm the governing document first, then look up that document's own figure.

How A117.1, the ADA Standards, TAS, and UFAS relate to enforcement A diagram showing A117.1 as a referenced technical standard that IBC-family building codes point to. Separate boxes show the 2010 ADA Standards applying through ADA regulations, TAS issued by TDLR under Texas Government Code Chapter 469 and based on the 2010 ADA Standards, and UFAS reaching housing work through HUD's Section 504 rule. A117.1-2017 Referenced standard, no legal force alone IBC-family codes Reference A117.1; each names the edition TDLR / TAS Issued under Gov't Code 469 Tracks 2010 ADA Standards 2010 ADA Standards Applies via ADA regulations UFAS Reaches housing via HUD Sec. 504 rule Four documents, four legal roles: never assume a number carries over between them.
A117.1 becomes enforceable only through the code or program that adopts it. The 2010 ADA Standards, TAS, and UFAS each reach a project through their own regulations or funding rules, and TAS is based on the 2010 ADA Standards, not on A117.1.

Practice questions

1. What is A117.1's legal status on its own?

  1. It only applies to HUD-funded projects
  2. It supersedes all state building codes
  3. It has no legal force of its own; it is a referenced technical standard
  4. It is directly enforceable federal law on its own, applying to every building in the United States

2. How do the 2010 ADA Standards take legal effect, compared with A117.1?

  1. They do not apply to buildings
  2. They apply only in Texas
  3. Only when a local building code or state agency references them, exactly as A117.1 depends on adoption to apply
  4. Through regulations federal agencies issue under the ADA, with no building code adoption needed

3. What is UFAS, and how does it reach federally assisted housing?

  1. An enforceable state building code
  2. A federal standard, written under the Architectural Barriers Act, that HUD's Section 504 rule applies to assisted housing
  3. A voluntary product-safety standard
  4. A private industry guideline with no funding tie, published by a model code organization for voluntary use

4. Is TAS, the Texas Accessibility Standards, itself enforceable, or merely a document referenced by something else?

  1. It is itself enforceable, issued by TDLR under Texas Government Code Chapter 469
  2. It has no legal force in Texas because Texas relies on the IBC and A117.1 for accessibility instead
  3. It only applies to federal buildings
  4. It is identical to A117.1 word for word

5. Which standard do IBC-family model codes reference for the technical accessibility criteria of buildings?

  1. UFAS
  2. The 2010 ADA Standards directly, with no separate standard
  3. TAS only, nationwide
  4. A117.1, in the edition each code names

6. How does TAS relate to the 2010 ADA Standards?

  1. TAS is a copy of A117.1 that Texas adopts through the IBC
  2. TDLR issues TAS under Government Code Chapter 469, intended to be consistent with the 2010 Standards and generally the same except where Texas changes are marked
  3. TAS is the federal 2010 Standards under another name, with no Texas changes
  4. TAS replaced UFAS for all federally funded housing in Texas

7. In Texas, which document does TDLR apply when it reviews covered commercial and public projects?

  1. TAS
  2. A117.1 itself
  3. UFAS
  4. The 2010 ADA Standards, in place of TAS

8. A GCHS estimator is pricing a commercial rehab project in Texas that is going through TDLR review, and notices a dimension in A117.1-2017 that differs from the project's plans. Which document is the standard for TDLR's review?

  1. UFAS, since it applies to all federally connected work and TDLR uses it for projects with any federal funding
  2. The 2010 ADA Standards, in place of TAS because they are federal
  3. TAS, since TDLR reviews these projects against TAS, with the federal ADA rules applying separately
  4. A117.1, since it is the newest edition

9. Which of the four documents is the only one with a formal Accessible, Type A, Type B, and Type C dwelling-unit taxonomy?

  1. A117.1
  2. The 2010 ADA Standards
  3. TAS
  4. UFAS

10. How do the 2010 ADA Standards address residential dwelling units, given they lack an Accessible/Type A/Type B/Type C tier system?

  1. By requiring every unit to meet the Accessible-unit tier
  2. They do not address residential units at all
  3. In Sections 233 and 809, which cover units with mobility features and units with communication features
  4. By cross-referencing A117.1's Type B tier directly and requiring Type B units in every residential facility

11. How does UFAS address dwelling units, given it also lacks an Accessible/Type A/Type B/Type C tier system?

  1. It cross-references A117.1's Type A tier
  2. It uses its own Section 4.34 dwelling-unit language, without those tiers
  3. It applies only to hotel guest rooms and transient lodging, not to dwelling units or housing
  4. It does not address dwelling units

12. Why should GCHS staff avoid assuming a UFAS or ADA Standards number carries over directly into an A117.1-based project, or vice versa?

  1. Because only UFAS has any numeric requirements
  2. Because A117.1 has no numeric requirements of its own
  3. Because each document is its own source with its own figures, and a number should be confirmed against whichever standard actually governs, not assumed to carry over
  4. Because the documents are functionally identical, so it rarely matters

13. A GCHS project is funded partly through a HUD Section 504 grant and partly through a Texas TDHCA program. What should a GCHS estimator do before applying a specific dimension to the project?

  1. Confirm which standard governs that funding source or jurisdiction before applying any specific number
  2. Apply whichever standard's number is easiest to build to
  3. Default to A117.1 numbers in every case, because A117.1-2017 is the newest and most detailed of the standards
  4. Apply the 2010 ADA Standards only, since it is a federal program

14. Which statement best describes the general relationship between A117.1 and the other three documents covered in this lesson?

  1. A117.1 is a technical standard that codes and programs reference; the other three apply through their own rules
  2. The ADA Standards, TAS, and UFAS are all subsets of A117.1 and have no independent legal force of their own in any state
  3. None of the four documents has any relationship to the others
  4. A117.1 replaces the ADA Standards, TAS, and UFAS wherever it applies

15. Why is it inaccurate to say A117.1-2017's numbers automatically apply on every GCHS project?

  1. A117.1 only applies to units built after 2017
  2. A117.1 has been withdrawn and replaced
  3. Which standard actually governs depends on the funding source, the jurisdiction's adopted code, and whether the project is residential or commercial
  4. A117.1 only applies to for-profit developers

16. What role does A117.1 play for a jurisdiction's building code, most accurately?

  1. It only governs federal buildings
  2. It supplies the technical criteria that a code like the IBC points to; the adopting authority supplies scoping
  3. It is the building code itself, adopted wholesale, with no other document or local scoping provision involved at all
  4. It is optional guidance a jurisdiction may ignore

17. A GCHS inspector is reviewing a small Texas commercial accessibility modification and wants to know which document to cite as the standard TDLR applies. What should the inspector cite?

  1. A117.1, since it is the most detailed of the four
  2. UFAS, since it is federal
  3. The 2010 ADA Standards, since ADA always controls over state standards and TDLR applies them in place of TAS
  4. TAS, since it is the standard TDLR applies to covered Texas commercial and public projects

18. Of the four documents, which one does HUD's Section 504 rule, 24 CFR 8.32, name for federally assisted housing?

  1. TAS
  2. The 2010 ADA Standards
  3. A117.1
  4. UFAS

19. True or false: GCHS staff can treat TAS and A117.1 as fully interchangeable on Texas commercial projects.

  1. True, but only for residential dwelling units
  2. False; TAS is issued by TDLR and is based on the 2010 ADA Standards, not on A117.1
  3. False, because TAS and A117.1 have nothing in common and TAS is instead a copy of UFAS with Texas changes
  4. True, they are always identical

20. Which of the following best summarizes what this course's twelve lessons covered?

  1. Only the dwelling-unit chapters of A117.1
  2. A single comparison between A117.1 and the 2010 ADA Standards
  3. UFAS in isolation from all other standards
  4. A117.1's building-block and technical chapters, its Accessible/Type A/Type B/Type C dwelling-unit provisions, and how A117.1 relates to the ADA Standards, TAS, and UFAS

Glossary

Referenced standard
A technical document, like A117.1, that has no legal force until a code or program adopts it by reference.
IBC-family codes
International Building Code editions and their derivatives, which reference A117.1 for accessibility technical criteria and name the edition they use.
TDLR
The Texas Department of Licensing and Regulation, which administers TAS and its project review process for covered Texas commercial and public projects.
TAS
The Texas Accessibility Standards, issued by TDLR under Texas Government Code Chapter 469 and based on the 2010 ADA Standards rather than on A117.1.
UFAS
The Uniform Federal Accessibility Standards, written under the Architectural Barriers Act and applied to federally assisted housing through HUD's Section 504 rule (24 CFR 8.32).
Section 504
The Rehabilitation Act provision covering programs and activities that receive federal financial assistance, which HUD's rule implements by pointing to UFAS.
Dwelling-unit taxonomy
A117.1's formal Accessible, Type A, Type B, and Type C categories for residential units, not shared by the ADA Standards, TAS, or UFAS.
Governing standard
Whichever standard actually governs a given project or funding source; not always the one whose numbers happen to be most familiar.
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