// DEFINITION

Nosing

Building Code 2021 of Illinois > 2 Definitions > 202 Definitions

[BE] NOSING. The leading edge of treads of stairs and of landings at the top of stairway flights.

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504.5 General Site and Building Elements, Nosings

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Building Code 2018 of Illinois > 10 Means of Egress > 1011 Stairways > 1011.5 Stair Treads and Risers > 1011.5.5 Nosing and Riser Profile