标准号:IS 4043-1969
发布日期:1969/10/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard fixes conventions:a) to designate and symbolize the direction on plan of closing of door,window or shutter leaves;b) to identify by a symbol each of the faces of doors, windows or shutters in relation to their direction of operation; andc) to specify the arrangement of the frame of doors, windows or shutters in relation to the premises or the room to be isolated.