GB 50189-2015 第2.0.3条
| | **Window-to-wall area ratio**: The ratio of the window opening area to the room facade unit area (i.e., the area enclosed by the building storey height and the bay positioning lines). The window-to-wall ratio for hotel guest rooms, lobbies and other areas shall be controlled separately by orientation, e.g., north-facing ≤0.30, east- and west-facing ≤0.35, south-facing ≤0.50. |