... square meters,double span,its span is 59 meters,30mt capacity overhead crane,its eave height is 25 meters;The ... axis area in Area B is 24.31 thousand square meters,continuous five-spans ... in Area C is 20.58 thousand square meters,continuous four-spans,the maximum capacity for overhead ... D is double span,its span is 59 meters,30mt capacity overhead crane,its eave height is ...