Floor level changes along accessible routes are limited to a maximum vertical dimension of one-quarter inch, while changes between one-quarter inch and one-half inch require a beveled edge with a slope ratio of two to one. Doorway thresholds are restricted to a maximum height of one-half inch per code requirements.
2 1 1/4" TO 1/2" (6.5 - 13 ) ACCESSIBLE ROUTE CHANGES IN LEVEL 1/4" MAX. (6.5) PER CBC 1010.1.7 THRESHOLDS AT DOORWAYS SHALL NOT EXCEED 1/2". RAISED THRESHOLDS AND FLOOR 6 E
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