Ottawa : Règlement no 2013-416, art. 55 — Property Standards By-law

1) All stairs or ramps, both interior and exterior, shall be maintained so as to be free of holes, cracks and other defects by replacing, repairing or painting. 2) Every porch, balcony and supporting structural member shall be maintained so as to be free of rot, deterioration or other defects by replacing, repairing or painting. 3) No exterior stairway, including a fully enclosed outside stairway but not including a fire escape, shall have,

• a) an angle exceeding 45 degrees from the horizontal;
• b) a tread less than 23.5 cm (9 ¼ in.) in depth;
• c) a rise greater than 20 cm (7 7/8 in.); or
• d) a run less than 21 cm (8 ¼ in.). BY-LAW NO. 2013-416 GUARDS AND HANDRAILS