FEATURES Lighting up affordably isn’t a complicated issue. Let there be light Proper lighting is essential for any project or any community. In fact, it forms part of our daily lives; without it we’d all be in the dark. By Ntsako Khosa A ccording to the South African National Standards (SANS) 10400 website in terms of the National Building Regulations (NBR) Part O, all habitable rooms, including bathrooms, showers and toilets (and interestingly, garages) must have some form of lighting and ventilation to enable people to use these rooms safely. The most important aspect is that it shouldn’t be detrimental to the health of those using the room for the purpose for which it was designed. STANDARDS AND LEGISLATION Fazil Ogle, managing director of OPS360, says that there are standards surrounding internal (such as bathrooms) and external (waterproofing or floodlights) lighting. “Ultimately, they are there to make sure that when it rains, the electricity doesn’t go off, when its functioning there’s no arching, it must be connected correctly. It must also be at a safe distance so that kids cannot get to it,” he says. 18 NOVEMBER - DECEMBER 2017 AFFORDABLE SA HOUSING For any light in or outside a room, it needs to conform to a certain amount of light or energy. This is also determined by the standards. He adds that lights placed a certain distance apart is also part of meeting legislated requirements. “It’s a calculation. Anywhere between, 1m or 2m in distance. It’s not just by luck that it looks nice,” he says. In terms of light in a room, council will assess the house and state the amount of power you’re not allowed to consume per metre square. “It’s a calculation that the architect will do and counsel will verify and make sure you fall within their standard. If you don’t they reject and ask you to change your drawing. Everything is calculated on 11W, with light-emitting diode (LED) lights its 5W,” he advises. In addition, the SANS specify zones of space for natural lighting which are guidelines that should be adhered to. These relate not only to the measurement of openings, but also to the angles of openings and they specify how various obstructions affect zones of space.