Architectural · A-WJ72D

Accessible Diagonal Corner Curb Ramp

Elements

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Detectable warning surface details show the dimensional requirements for truncated domes on accessible curb ramps and walking surfaces. Individual truncated domes feature a base diameter ranging from 0.9 inches minimum to 1.4 inches maximum, a top diameter between 50 percent minimum and 65 percent maximum of the base diameter, and a height of 0.2 inches. Dome spacing is dimensioned with 1.6 inches minimum to 2.4 inches maximum center-to-center spacing, and 0.65 inches minimum spacing in the orthogonal direction. The warning surface has a standard depth of 3 feet typical per plans and requires visual contrast with adjacent walking surfaces, complying with ANSI 705 and APWA standards.

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