SANS10400-Building Regulations South Africa SANS10400 are the Building regulations in South Africa, and both international and national standards, are fundamental to successful building and construction projects, both big and small.
Air, driven by natural wind, is the most natural source of ventilation. It enters the building through windows and vents and flows according to the direction of the wind. Fresh air, shown by the blue arrows, comes into the building through windows and other openings, while the hot air (red arrows) rises and escapes through various vents.
