Play
tables designed primarily for children under 5-years-old may provide a parallel
approach instead of knee clearance if the rim is a maximum of 31 inches (785
mm) high. The edge of this elevated sand table has been designed to provide
access by providing a generous opening. The tops of rims, curbs, or other obstructions
that would prevent access to a table surface should be 31 inches (785 mm) maximum
in height.