ONTARIO BUILDING CODE MENTION OF RAILINGS

3.3.1.18. Transparent Doors and Panels

(1) Except for dwelling units and as permitted by Sentence (4), a glass or transparent door shall be designed and constructed so that the existence and position of the door is readily apparent, by attaching visually contrasting hardware, bars or other permanent fixtures to it.

(1.1) Fully glazed transparent doors, and fully glazed transparent sidelights and panels with widths greater than 300 mm, shall be marked in conformance with Sentence 3.8.3.3.(15).

(2) A glass door shall be constructed of,

(a)  laminated or tempered safety glass conforming to CAN/CGSB-12.1-M, “Tempered or Laminated Safety Glass”, or

(b)  wired glass conforming to CAN/CGSB-12.11-M, “Wired Safety Glass”.

(3) Except as permitted by Sentence (4), transparent panels used in an access to exit that, because of their physical configuration or design, could be mistaken as a means of egress shall be made inaccessible by barriers or railings.

(4) Sliding glass partitions that separate a public corridor from an adjacent occupancy and that are intended to be open during normal working hours need not conform to Sentences (1) and (3), provided the partitions are marked in conformance with Sentence 3.8.3.3.(15).

(4.1) Glass in a vision panel in a door or in a transparent sidelight shall conform to Sentence 3.8.3.3.(14).

(5) Glass in doors and glass sidelights that could be mistaken for doors, within or at the entrances to dwelling units and in public areas, shall conform to the requirements of Article 9.6.1.4.

(6) A window in a public area that extends to less than 1 070 mm above the floor and is located above the second storey in a building of residential occupancy, shall be protected by a barrier or railing from the floor to not less than 1 070 mm above the floor, or the window shall be non-openable and designed to withstand the lateral design loads for balcony guards required by Article 4.1.5.14.

3.4.7.6. Guards and Railings

(1) The open sides of every platform, balcony and stairway forming part of a fire escape shall be protected by guards not less than 920 mm high measured vertically above the nosing of any tread or platform.

(2) The top rail of a guard is permitted to serve as a handrail if it is free from obstructions that could break a handhold.

(3) A wall handrail shall be installed if the fire escape is more than 550 mm wide.

(4) Openings through any guard that is required by Sentence (1) shall be of a size that will prevent the passage of a sphere having a diameter more than 100 mm unless it can be shown that the location and size of openings that exceed this limit do not represent a hazard.

(5) Unless it can be shown that the location and size of openings do not present a hazard, a guard for a fire escape shall be designed so that no member, attachment or opening located between 140 mm and 900 mm above a platform or the nosing of any tread will facilitate climbing.

3.8.3.4. Ramps

(1) Ramps located in a barrier-free path of travel shall,

(a)  have a minimum width of 900 mm between handrails,

(b)  have a maximum gradient of 1 in 12,

(c)  have a level area of at least 1 670 mm by 1 670 mm at the top and bottom of a ramp and where a door is located in a ramp, so that the level area extends at least 600 mm beyond the latch side of the door opening, except that where the door opens away from the ramp, the area extending beyond the latch side of the door opening may be reduced to 300 mm,

(d)  have a level area at least 1 670 mm long and at least the same width as the ramp,

(i)  at intervals of not more than 9 m along its length, and

(ii)  where there is a change of 90° or more in the direction of the ramp,

(e)  except as provided in Sentence (2), be equipped with handrails on both sides that shall,

(i)  be continuously graspable along their entire length and have circular cross-section with an outside diameter not less than 30 mm and not more than 40 mm, or any non-circular shape with a graspable portion that has a perimeter not less than 100 mm and not more than 155 mm and whose largest cross-sectional dimension is not more than 57 mm,

(ii)  be not less than 865 mm and not more than 965 mm high, measured vertically from the surface of the ramp, except that handrails not meeting these requirements are permitted provided they are installed in addition to the required handrail,

(iii)  be terminated in a manner that will not obstruct pedestrian travel or create a hazard,

(iv)  extend horizontally not less than 300 mm beyond the top and bottom of the ramp,

(v)  be provided with a clearance that conforms to Sentence 3.4.6.5.(13), and

(vi)  be designed and constructed such that handrails and their supports will withstand the loading values obtained from the nonconcurrent application of a concentrated load not less than 0.9 kN applied at any point and in any direction for all handrails and a uniform load not less than 0.7 kN/m applied in any direction to the handrail,

(f)  except as provided in Sentence (2), have a wall or a guard on both sides and where a guard is provided the guard shall,

(i)  be not less than 1 070 mm measured vertically to the top of the guard from the ramp surface, and

(ii)  be designed so that no member, attachment or opening located between 140 mm and 900 mm above the ramp surface being protected by the guard will facilitate climbing,

(g)  be provided,

(i)  with a curb at least 50 mm high on any side of the ramp where no solid enclosure or solid guard is provided, and

(ii)  with railings or other barriers that extend to within 50 mm of the finished ramp surface or have a curb not less than 50 mm high, and

(h)  except as provided in Sentence (2), where the ramp is wider than 2 200 mm, have an intermediate handrail with a clear width of 900 mm between the intermediate handrail and one of the handrails described in Clause (e).

(2) Where a ramp serves as an aisleway for fixed seating, the requirements for handrails in Clauses (1)(e) and (h) and for walls or guards in Clause (1)(f) need not apply.

(3) Floors or walks in a barrier-free path of travel having a slope steeper than 1 in 20 shall be designed as ramps.

9.6.1.4. Types of Glass and Protection of Glass

(1) Glass sidelights greater than 500 mm wide that could be mistaken for doors, glass in storm doors and glass in sliding doors within or at every entrance to a house or an individual dwelling unit and in public areas shall be,

(a)  safety glass of the tempered or laminated type conforming to CAN/CGSB-12.1-M, “Tempered or Laminated Safety Glass”, or

(b)  wired glass conforming to CAN/CGSB-12.11-M, “Wired Safety Glass”.

(2) Except as provided in Sentence (4), glass in entrance doors to houses or individual dwelling units and in public areas, other than the entrance doors described in Sentence (1), shall be safety glass or wired glass of the type described in Sentence (1) where the glass area exceeds 0.5 m2 and extends to less than 900 mm from the bottom of the door.

(3) Except as provided in Sentence (4), transparent panels that could be mistaken as a means of egress shall be protected by barriers or railings.

(4) Sliding glass partitions that separate a public corridor from an adjacent occupancy and that are open during normal working hours need not conform to Sentences (2), (3) and (5), except that such partitions shall be suitably marked to indicate their existence and position.

(5) Except as provided in Sentence (4), every glass or transparent door accessible to the public shall be equipped with hardware, bars or other permanent fixtures designed so that the existence and position of such doors is readily apparent.

(6) Glass, other than safety glass, shall not be used for a shower or bathtub enclosure.

9.8.8.4. Guards for Floors and Ramps in Garages

(1) Except for floors of garages referred to in Section 9.35., where garage floors or ramps are 600 mm or more above the adjacent ground or floor level, every opening through a garage floor and the perimeter of floors and ramps that have no exterior walls shall be provided with,

(a)  a continuous curb not less than 140 mm in height, and

(b)  a guard not less than 1 070 mm above the floor level.

(2) Vehicle guardrails shall be designed and constructed to withstand the loading values specified in Sentence 4.1.5.15.(1).

9.8.8.5. Openings in Guards

(1) Except as permitted in Sentences (2) and (3), openings through guards shall be of a size that prevents the passage of a spherical object having a diameter of 100 mm.

(2) Except where they serve storage garages, guards in industrial occupancies are permitted to consist of,

(a)  a top railing, and

(b)  one or more horizontal intermediate rails spaced such that the size of the openings through the guard prevents the passage of a spherical object having a diameter of 535 mm.

(3) Openings through any guard that is not required by Article 9.8.8.1. and that serves an occupancy other than industrial occupancy, shall be of a size that,

(a)  prevents the passage of a spherical object having a diameter of 100 mm, or

(b)  permits the passage of a spherical object having a diameter of 200 mm.

See Ontario Building Code

https://www.ontario.ca/laws/regulation/120332