It must comply with the following standards:(a) the dry pit must be at least 1.2 m deep, 1.2 m long and 1 m wide;
(a.1) the lower part of the walls, for half the height, must be lined with spaced boards and the upper part with tightly joined boards;
(a.2) the bottom of the pit must be at least 60 cm above bedrock, underground water or impermeable or low permeability soil;
(b) a construction sill, made from structural lumber 10 cm by 10 cm must be installed at ground level around the whole perimeter of the pit;
(c) the floor must be made from plywood or any other material which makes it watertight and prevents gases coming from the pit from entering the shelter;
(d) the seat must be built of a watertight material and equipped with a tight-fitting lid;
(e) the shelter must:i. sit on the construction sill;
ii. be enclosed to keep flies and mosquitoes outside;
iii. be ventilated by screens installed in its upper walls;
iv. be painted inside; and
v. be equipped with an overhanging roof to deflect rainwater away from the pit;
(f) the construction sill and the bottom of the shelter must be banked with earth and a mound must be made to deflect rainwater away from the pit;
(f.1) the maximum height of the backfill to build a dry pit must be not more than 60 cm;
(g) when the pit is partially dug in a backfill, the grade on each side of the backfill must be 1:2;
(h) a ventilation pipe with a minimum diameter of 10 cm and equipped with a screen at the outlet must be installed on the seat or on the floor of the shelter and must extend 60 cm above the roof.