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| TABLE 1: ROOF VENT SIZES FOR THE ZERO WIND CASE | ||
| Roof vent size (m2) (Door closed on the lowest storey) | Roof vent size (m2) (Door open on the lowest storey) | |
| Natural ventilation case | 18·6 | – |
| Fire in atrium (50ºC) | 19·4 | 26·3 |
| Fire in atrium (60ºC) | 19·7 | 26·7 |
| Fire in atrium (70ºC) | 20·0 | 27·1 |
| Fire in atrium (80ºC) | 20·3 | 27·5 |
| Fire in atrium (90ºC) | 20·6 | 27·9 |
| Fire in atrium (100ºC) | 20·9 | 28·3 |