What are California's Braille spacing requirements?
Quick Answer
California Title 24 requires stricter Braille spacing than federal ADA: exactly 1/10 inch (0.1") for dot spacing within cells. This is a California-specific amendment that causes many out-of-state signs to fail inspection.
Content Verification
Sources:
Code Reference
CBC 11B-703.3.1
California Building Code Title 24 Section 11B-703.3.1
Detailed Explanation
California has adopted stricter Braille specifications than federal ADA standards:
1. **California Spacing**: 0.1" (1/10 inch) dot spacing requirement, more precise than federal standards.
2. **Why Stricter**: The California Building Standards Commission determined that tighter tolerances improve readability for Braille users.
3. **Enforcement Impact**: Many signs manufactured to federal ADA specifications fail California inspections due to this spacing difference.
4. **Verification**: Inspectors use precision gauges to measure Braille dot spacing. Even minor variations can cause failure.
5. **SpecCodes Compliance**: All SpecCodes signs are manufactured to California's stricter standards, ensuring they pass inspection in any state.
Common Mistakes
- ×Using signs manufactured to federal ADA specs in California
- ×Assuming all "ADA compliant" signs meet California requirements
- ×Not verifying Braille spacing with precision instruments
- ×Purchasing from suppliers unfamiliar with California code
How to Verify Compliance
- ✓Request California Title 24 compliance certification from supplier
- ✓Use a Braille spacing gauge calibrated to 0.1" specifications
- ✓Check that the supplier specifically manufactures for California
- ✓Verify documentation includes CBC 11B-703.3.1 reference
Official Code Text
"Braille dots shall have a domed or rounded shape. The diameter of the base of the domed Braille dot shall be in the range of 0.057 inches (1.45 mm) minimum to 0.063 inches (1.6 mm) maximum."
How to Cite This Page
When referencing this information:
SpecCodes.com "What are California's Braille spacing requirements?" - Verified 2026-01-30Compliant Products
To meet these requirements, compliant signage typically includes:
Related Questions
Expert Verification
Compliance Information Verified
2026-01-30
CBC 2025 / ADA 2010
Effective January 1, 2026
California Building Standards Commission
Compliance Verification Notice
This information is provided for general reference purposes only. Local inspectors and authorities having jurisdiction (AHJ) have final authority over code interpretation and enforcement.
Before ordering signage, SpecCodes recommends:
- Contacting your local Building Department
- Reviewing current permit requirements for your project
- Confirming any local code amendments that may apply
Legal Notice: This content does not constitute legal advice. SpecCodes provides compliance information as a reference resource only. Users are responsible for verifying all requirements with their local jurisdiction before installation.