Dimensional requirements for detectable warning surfaces feature typical dome spacing between 2.3 inches minimum and 2.4 inches maximum base to base. The section detail includes a maximum dome height of 0.2 inches, a minimum height of 0.18 inches, and tapered edges where exposed. Notes specify that the surface must be yellow and approximate color 33538 of SAE AMS-STD-595A per California Building Code Section 11B-705.1.1.3.1. Additional requirements mandate compliance with curb ramp and walk provisions, and require DSA-AC certified detectable warning products in California.
TYPICAL DOME SECTION TYPICAL DOME PLAN TAPERED EDGES WHERE EXPOSED 2.4" MAX. 2.4" MAX. 0.92" MAX. 0.47" MAX. TYP. BASE TO BASE NOTES: 1. THE DETECTABLE WARNING SURFACE SHALL BE YELLOW AND APPROXIMATE 33538 OF SAE AMS-STD-595A, PER CBC SECTION 11B-705.1.1.3.1. 2. THE DETECTABLE WARNING SURFACE SHALL COMPLY WITH CBC SECTION 11B.705.1.2.2 FOR CURB RAMPS. 3. THE DETECTABLE WARNING SURFACE SHALL COMPLY WITH CBC SECTION 11B.705.1.2.5 FOR WALKS. 4. IN CALIFORNIA: ONLY DSA-AC DETECTABLE WARNING PRODUCTS SHALL BE INSTALLED 0.2" MAX. 0.45" MIN. 2.3" MIN. 0.65" MIN. 2.3" MIN. 0.9" MIN. 0.18" MIN.
Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.
Start membership