9.8.8.3.Height of Guards (See Note A-9.8.3.3.)

(1) Except as provided in Sentences (2) to (3.1), all guards shall be not less than 1 070 mm high. (2) All guards within dwelling units or within houses with a secondary suite including their common spaces shall be not less than 900 mm high. (3) Exterior guards serving not more than one dwelling unit or a house with a secondary suite including their common spaces shall be not less than 900 mm high where the walking surface served by the guard is not more than 1 800 mm above the finished ground level. (3.1) The height of guards for exterior stairs and landings more than 10 m above adjacent ground level shall be not less than 1 500 mm. (4) The height of guards for flights of steps shall be measured vertically from the top of the guard to a line drawn through the tread nosing served by the guard.