13-124-335 Openings in guards.

   Open guards shall have balusters or ornamental patterns such that a four-inch-diameter sphere cannot pass through any opening up to a height of 34 inches. From a height of 34 inches to 42 inches above the adjacent walking surfaces, a sphere eight inches in diameter shall not pass.

   Exceptions:

      1.   The triangular openings 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 six inches in diameter cannot pass through the opening.

      2.   At elevated walking surfaces for access to and use of electrical, mechanical or plumbing systems or equipment, guards shall have balusters or be of solid materials such that a sphere with a diameter of 21 inches cannot pass through any opening.

      3.   In Class G, H-1, H-2 and I occupancies and in Residential Restrained Care Facilities in Class B occupancies, balusters, horizontal intermediate rails or other construction shall not permit a sphere with a diameter of 21 inches to pass through any opening.

      4.   In assembly seating areas, guards at the end of aisles where they terminate at a fascia of boxes, balconies and galleries shall have balusters or ornamental patterns such that a four-inch-diameter sphere cannot pass through any opening up to a height of 26 inches above the adjacent walking surfaces. From a height of 26 inches to 42 inches above the adjacent walking surfaces, a sphere eight inches in diameter shall not pass.

(Added Coun. J. 10-1-03, p. 9163, § 4.10; Amend Coun. J. 4-19-17, p. 48139, § 1)