Accessible Fishing Piers and Platforms - A Summary of Accessibility Guidelines for Recreation Facilities

1003.2.12.2 Opening limitations.

Open guards shall have balusters or ornamental patterns such that a 4-inch-diameter (102mm) sphere cannot pass through any opening up to a height of 34 inches (864mm). From a height of 34 inches (864mm) to 42 inches (1067mm) above the adjacent walking surfaces, a sphere 8 inches (203mm) in diameter shall not pass.

Exception: The triangular opening formed by the riser, tread and bottom rail at the open side of a stairway shall be of a maximum size such that a sphere of 6 inches (152mm) in diameter cannot pass through the opening.

[Exceptions 2 through 4 not reprinted.]

Source: Sections 1003.2.12.1 and 1003.2.12.2, International Building Code. Reprinted with permission of the International Code Council, Falls Church, Virginia.