accessibility standards for Federal outdoor developed areas 55 Some custom-built fire rings and fireplaces may have a raised edge or wall around the fire-building area, perhaps built out of bricks or mortared stone. The depth or thickness of the raised edge or wall must not exceed 10 inches (figure 21). Figure 21—Requirements for custom-built fire rings. 10" (255mm) 9" (230mm) 48" CLEAR ALL AROUND MAX SLOPE 2% TO 5% IN ALL DIRECTIONS MIN (1220mm) MAX
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