Handrails required on both sides of stairs and ramps. Handrails shall be provided on at least one side of each continuous run of treads or flight with four or more risers. Handrail required on at least one side of stairway with two or more risers. Handrail required on at least one side of Handrails required on at least one side of ramps exceeding a slope of 1:12. Laminated, tempered glass is required in all glass railing applications. Glass installed in exterior railing in-fill panels or balusters shall be laminated glass complying with Category II of CPSC. The panels shall be designed to withstand the structural load as required by code. A top rail shall not be required where the glass balusters are laminated glass with two or more glass plies of equal thickness and the same glass type when approved by the building official. The impacted glass shall be able to support the top rail after impact. If the top rail is only supported by glass, the assembly shall be tested according to the impact requirements in ASTM E 1996. The panels and their support system shall be designed to withstand the uniform or concentrated load requirements – applied at the top – by a design factor of 4 for safety. Glass balusters shall not be installed without an attached handrail or guard. Each handrail or guard section shall be supported by a minimum of three glass balusters or shall be supported to remain in place should one baluster panel fail. From a height of 26″ to 42″ above the adjacent walking surfaces, a sphere 8″ in diameter shall not pass.Ĥ-3/8″ sphere for openings on the sides of stair treads in Group R-3 and within individual dwelling units of Group R-2. 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 4″ sphere cannot pass through any opening up to a height of 26″. In areas which are not open to the public within occupancies in Group I-3, F, H or S, balusters, horizontal intermediate rails or other construction shall not permit a sphere with a diameter of 21″ to pass through any opening. Exceptions: 21″ sphere for elevated walk for electrical, mechanical and plumbing systems and Group I-3, F, H, or S occupancies, balusters, horizontal intermediate rails or other construction. 6″ sphere - at triangle formed by riser, tread and bottom rail 4″ sphere - general - to a height of 34″ Openings for required guards on the sides of stair treads shall not allow a sphere 43/8″ to pass through. The triangular openings formed by the riser, tread and bottom rail of a guard at the open side of a stairway are permitted to be of such a size that a sphere 6 inches (152 mm) cannot pass through.Ģ. Required guards on open sides of stairways, raised floor areas, balconies and porches shall have intermediate rails or ornamental closures which do not allow passage of a sphere 4″ or more in diameter.ġ. 6″ sphere - at triangle formed by riser, tread and bottom rail. 4-3/8″ sphere for openings on the sides of stair treads. On monumental stairs, handrails shall be located along the most direct path of egress travel. Intermediate handrails are required so that all portions of the stairway width required for egress capacity are within 30 inches of a handrail. Height Requirements (of Guards) For Balconies, Galleries & BleachersĪll portions of the stairway width required for egress capacity are within 30 inches (762mm) of a handrail. In assembly seating where guards in accordance with Section 1025.14 are permitted and provided The height in assembly areas shall be in accordance with Section 1008.12. In those applications, where the top rail also serves as a handrail, it shall have a height of not less than 34″ and not more than 38″ above stair nosing. 36″ minimum on porches, balconies, raised floor surfaces.Ĥ2″ minimum except in Group R-3, and within Height Requirments, Minimum for Guardrails Measurement for the 30″ drop is to be taken at any point within 36″ from the edge of the open surface. 30″ above floor or grade below along glazed sides of stairways, ramps and landings where the glazing provided does not meet the code’s strength and attachment requirements. 30″ above floor or grade below on open-sided walking surfaces, mezzanines, industrial equipment platforms, stairways, ramps and landings. On open sides of stairs with a total riser of more than 30″ above the floor or grade below. 30″ above floor or grade below on open-sided walking surfaces.
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