Building, has windows which do no have to be rainproof or windproof in rooms between living or working areas and atrium, courtyard or walkway areas

摘要

The windows for the first type of rooms used for working or living in are rainproof, windproof and thermally insulating, the windows for the second type of rooms forming atrium, courtyard or covered walkway areas are only rainproof and windproof and the windows for the third type of rooms having walls with windows adjoining the second type of rooms are thermally insulating.