ADA vs ICC A117.1 State Adoption Map: Which Accessibility Standard Applies in Your State?

The ADA and ICC A117.1 are two different standards with two different enforcement mechanisms. Understanding which edition of ICC A117.1 your state has adopted — and where it diverges from ADA — is critical for compliant door hardware specification. This Q&A guide addresses the most common questions architects and facility managers encounter.

Understanding the Two Standards

What is the difference between ADA and ICC A117.1?

ADA (Americans with Disabilities Act) is a federal civil rights law enforced by the Department of Justice regardless of building location. ICC A117.1 is a voluntary technical standard published by the International Code Council that becomes enforceable only when adopted by a state as part of its building code. ADA governs civil rights liability at the federal level, while ICC A117.1 governs building permitting at the state level. Both must be satisfied on every project — compliance with one does not guarantee compliance with the other.

Where do ADA and ICC A117.1 requirements align on door hardware?

For most everyday door hardware requirements, the two standards are harmonized. Both require:

• Clear width: 32 inches minimum at 90-degree open position (§404.2.3)
• Opening force: 5 lbf maximum for interior hinged doors on accessible routes (ADA §404.2.9 / ICC A117.1 §404.2.8)
• Closing speed: 5-second minimum from 90° to 12° from latch (§404.2.8.1)
• Hardware type: Lever or push hardware operable with one hand, no tight grasping or twisting (§404.2.7)
• Mounting height: 34–48 inches above finished floor (§404.2.7)

Where the Standards Diverge

Where do ADA and ICC A117.1-2017 differ on maneuvering clearances?

ICC A117.1-2017 is more restrictive than the 2010 ADA Standards on maneuvering clearances for new construction:

A building designed to ADA minimums in a state that adopted the 2017 edition may pass federal civil rights review but fail the state building permit on maneuvering clearances. The governing rule: comply with the more restrictive requirement.

The Fire Door Force Exemption

Does the ADA fire door exemption eliminate the opening force requirement?

No. Both ADA §404.2.9 and ICC A117.1-2017 §404.2.8 state: "Fire doors shall have the minimum opening force allowable by the appropriate administrative authority." This defers the force threshold to the authority having jurisdiction — which in practice is NFPA 80. NFPA 80 §5.2.1.2(9) requires self-latching: the latch bolt must engage the strike on every closure cycle. The opening force must be the minimum value that still achieves positive latching. If it exceeds 5 lbf — which can occur on heavy fire-rated assemblies — a powered door operator under ADA §404.3 becomes the accessibility accommodation path.

For a full analysis, see ADA 5 lbf Opening Force vs. Fire Door Latching.

State Adoption Status

How many states have adopted ICC A117.1-2017?

As of this article, the adoption landscape breaks into four categories:

Adoption status changes when states update building codes on 3–6 year cycles. Verify the current edition through the state building code authority for each project.

Which states have notable ICC A117.1 adoption differences?

• California: Adopts its own CBC with substantial state-specific modifications (Title 24)
• New York: References ICC A117.1 through the State Building Code with amendments
• Texas: Adopted ICC A117.1-2012 as part of Texas Accessibility Standards
• Florida: References ICC A117.1 with Florida-specific modifications
• Illinois: References ICC A117.1 through the Illinois Accessibility Code

Clear Width and the 32-Inch Trap

Why does a standard 32-inch door fail the 32-inch clear width requirement?

The 32-inch clear width is measured from the latch-side door stop face to the face of the open door leaf at 90 degrees — not the nominal door size. A standard 32-inch nominal door with standard full-mortise butt hinges yields approximately 29.5 inches of clear width. The door leaf's 1-3/4-inch thickness projects into the opening.

The effective minimum for compliance is a 34-inch nominal door (~31.5 inches clear, borderline) or a 36-inch door (~33.5 inches, comfortably compliant). For existing buildings, swing-clear hinges from Stanley (FBB199), Hager (BB1902), and McKinney (T4A3386) move the door completely outside the opening at 90 degrees. Cost: $400–$600 per door vs. $8,000–$14,000 for structural door widening. See Swing-Clear Hinge ADA Retrofit Cost Analysis.

Specifying for Both Standards

When ADA and ICC A117.1 conflict, which standard controls?

The more restrictive requirement always controls:

• Clearances: ICC A117.1-2017's 52-inch push-side clearance governs over ADA's 48-inch minimum in states where 2017 is adopted
• Operating force: ADA's 5 lbf maximum governs because ICC A117.1-2017's 15 lbf threshold is less restrictive
• Fire doors: Both defer to NFPA 80 — measure and document the minimum latching force at commissioning

Long-Term Compliance

What is force creep and why does it matter for ADA compliance?

Force creep is the gradual increase in door opening force over time. A Grade 1 overhead closer adjusted to 4.8 lbf at installation will typically drift to 8–12 lbf within 3–5 years without recalibration. ADA Title III (42 U.S.C. §12182) imposes an ongoing operations obligation — building owners must maintain accessible features in operable working condition under 28 CFR §36.211(a). Door hardware is the most frequently cited deficiency in post-occupancy ADA audits.

Grade 1 closers from LCN (4040XP), Norton (8501), and Hager (5500 series) achieve stable performance with 24-month recalibration intervals. Spring hinge closer designs — where closing torque is independent of hydraulic opening resistance — reduce force creep by mechanically decoupling the two parameters. Waterson's K51L series and Bommer Industries produce comparable products.

Summary: Three Rules for Cross-Standard Compliance

What are the three rules for cross-standard ADA and ICC A117.1 compliance?

1. Identify the adopted ICC A117.1 edition for your project state before specifying — do not assume the 2017 edition applies
2. Comply with the more restrictive requirement where ADA and the adopted ICC A117.1 edition conflict
3. On fire doors, measure and document the minimum opening force required for positive latching — the ADA fire door exemption defers to NFPA 80, it does not eliminate the force requirement

ADA compliance and state building code compliance are separate obligations that must both be satisfied. The state adoption map determines which version of the standard your building permit reviewer is applying — and which Commentary language your AHJ is treating as enforceable.