The Ontario Building Code | Construction Requirements
8.3.2.1. Construction Requirements
(1) A privy as described in Subsections 8.3.3. to 8.3.5. shall be enclosed with a superstructure that,
(a) is constructedof strong durable weatherproof materials,
(b) has a solid floor supported by a sill constructed of treated timber, masonry or other material of at least equal strength and durability,
(c) is easily sanitized,
(d) unless it is equipped solely as a urinal, is equipped with one or more seats each having a cover and being supported by an enclosed bench or riser that is lined with an impervious material on all interior vertical surfaces,
(e) is equipped with a self-closing door,
(f) has one or more openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings for purposes of ventilation, all of which are screened,
(g) has a ventilation duct that is screened at the top end and that extends from the underside of the bench or riser to a point above the roof of the superstructure, and
(h) shall not have any openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings for the reception of human body waste, other than urinals and those constructed in accordance with Clause (1)(d).
8.3.3. Earth Pit Privy