2010 ADA Standards for Accessible Design Pocket Guide
303.2 Vertical.
Changes in level of ¼ inch (6.4 mm) high maximum shall be permitted to be vertical.
Figure 303.2 Vertical Change in Level
Changes in level of ¼ inch (6.4 mm) high maximum shall be permitted to be vertical.
Figure 303.2 Vertical Change in Level
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