Div. B › Part 9 › 9.8 › 9.8.4 — Step Dimensions

9.8.4.2 — Dimensions for Runs and Rectangular Treads

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(1) The run for rectangular treads shall conform to Table 9.8.4.1.

(2) The depth of a rectangular tread shall be not less than its run and not more than its run plus 25 mm.

Tables & Figures referenced

Table 9.8.4.1 : Rise for Rectangular Treads, Tapered Treads and Winders and Run for Rectangular Treads : Forming Part of Sentences 9.8.4.1.(1) and 9.8.4.2.(1)

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OBC Definitions

Defined terms on this page

dwelling unit

means a suite operated as a housekeeping unit, used or intended to be used by one or more persons and usually containing cooking, eating, living, sleeping and sanitary facilities.

house

means a detached house, semi-detached house or row house containing not more than two dwelling units.

live/work unit

means a dwelling unit having an area of not more than 200 m2 that contains a subsidiary business and personal services occupancy or a subsidiary low hazard industrial occupancy, and which is used and operated by one or more persons of a single household.

mezzanine

means an intermediate floor assembly between the floor and ceiling of any room or storey and includes an interior balcony.

run

means the horizontal distance between two adjacent tread nosings on a stair.

service room

means a room provided in a building to contain equipment associated with building services.

service space

means space provided in a building to facilitate or conceal the installation of building service facilities such as chutes, ducts, pipes, shafts or wires.

tapered tread

means a tread with non-parallel edges that increases or decreases its run uniformly over its width.

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