Accessibility details showing ramp edge protection configurations with a curb and a barrier. The extended floor surface requires a minimum twelve-inch dimension beyond the inside face of the handrail. The curb configuration maintains a minimum four-inch height requirement. The barrier configuration prevents the passage of a four-inch sphere with any portion within four inches of the floor.
4" min 4" (a) Curb (b) Barrier FIGURE 405.9.2 RAMP EDGE PROTECTION Barrier prevents passage of 4 inch sphere with any portion within 4 inch of floor FIGURE 405.9.1 EXTENDED FLOOR SURFACE 12 min 12 min
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