The Ontario Building Code | Dimensions of Landings

9.8.6.3. Dimensions of Landings

(1) Except as provided in Sentences (3) to (6), the width and length of landings shall comply with Table 9.8.6.3.

Table 9.8.6.3.
Dimensions of Landings

Forming Part of Sentence 9.8.6.3.(1)

Item	Column 1 application	Column 2 Landing Configuration	Column 3 Minimum Width, mm	Column 4 Length, mm
1.	Stairs and ramps serving a single dwelling unit	In straight-run stair or ramp, or landing turning through less than 30°, within a dwelling unit	Width of stair or ramp	Not less than 860
		In straight-run exterior stair or ramp, or exterior landing turning through less than 30°	Width of stair or ramp	Not less than 900
		Landing turning through an angle of 30° or more, but less than 90°	Width of stair or ramp measured at right angle to path of travel	(a) Not less than 230 measured at the inside edge of the landing, and
				(b) Not less than 370 measured 230 from the inside edge of landing or handrail
		Landing turning through not less than 90°	Width of stair or ramp measured at right angle to path of travel	Not less than width of stair or ramp landing
2.	Stairs and ramps serving other than single dwelling units	In straight-run stair or ramp, or landing turning through less than 30°	Width of stair or clear width of ramp	Lesser of required width of stair or clear width of ramp, or 1 100
		Landing turning through 30° or more	Width of stair or clear width of ramp measured at right angle to path of travel	Not less than width of stair or clear width of ramp

Note: On July 1, 2017, Table 9.8.6.3. of Division B of the Regulation is amended by striking out "single dwelling unit" in Column 1 of Item 1 and substituting "house or an individual dwelling unit" and striking out "serving other than single dwelling units" in Column 1 of Item 2 and substituting "not serving a houseor an individual dwelling unit". (See: O. Reg. 139/17, s. 81)

(2) Reserved

(3) Where stairs or ramps of different widths adjoin a single landing, the minimum width of the landing shall be,

(a) not less than the greater required stair or ramp width, where one or more of the stair or ramp widths do not exceed their respective required widths, or

(b) not less than the lesser actual stair or ramp width, where all of the widths of the stairs or ramps exceed their respective required widths.

(4) Where a door swings toward a stair, the full arc of the swing shall be over the landing.

(5) The slope of landings shall not exceed 1 in 50.

(6) Where a doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway or stairway opens onto the side of a ramp, the landing shall extend for a distance of not less than 300 mm on either side of the doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorway or stairway, except on a side abutting an end wall.