Daylight in Apartments

The minimum illuminance requirement for New Zealand Building Code (NZBC) Clause G7 – Natural Light is currently not being met in some new apartments. Daylight simulation is the most effective method of predicting the performance of daylight in apartments, but due to the complexity and time required to gain accurate results, these simulations are not routinely done. This paper discusses an investigation into whether a tool could be created that will identify when daylight simulations may be required to prove compliance with NZBC G7.