6РІР‚С– sphere - at the triangle formed by riser, tread and bottom rail.

4-3/8РІР‚С– 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.

All portions of the stairway width required for egress capacity are within 30 inches (762mm) of a handrail.

Height Requirements (of Guards) For Balconies, Galleries & Bleachers IBC 2000 (6)

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 508.12.

In those applications, where the top rail also serves as a handrail, it shall have a height of not less than 34РІР‚С– and not more than 38РІР‚С– above stair nosing.

42РІР‚С– minimum except in Group R-3, and within individual dwelling units of Group R-2.

34РІР‚С– minimum on the open side of stairs.

36РІР‚С– minimum on porches, balconies, raised floor surfaces.

Height Requirements, Minimum for Guardrails IRC (5)

Measurement for the 30РІР‚С– drop is to be taken at any point within 36РІР‚С– from the edge of the open surface.

30РІР‚С– above floor or grade below along glazed sides of stairways, ramps, and landings where the glazing provided does not meet the codeРІР‚в„ўs strength and attachment requirements.

30РІР‚С– 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 30РІР‚С– above the floor or grade below.

30РІР‚С– above floor or grade below on open-sided walking surfaces.The main purpose of building codes are to protect public health, safety and general welfare as they relate to the construction and occupancy of buildings and structures. The codes themselves are generally not legally binding.

Building codes specify minimum standards for the construction of buildings and structures.

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