Ensure that during the design of the escaping retarding used, and that the direction of opening doors to design and implementation in line with the path of escape.
Make sure during the design of the free ways to escape, thereby hindering their use, and that the direction of open doors in the design and implementation in line with the escape path
Make sure during the design of ways to escape without preventing the use and the trend of open doors in the design and implementation is consistent with the escape route