... double span,its span is 59 meters,30mt capacity overhead crane,its eave height is 25 ... thousand square meters,continuous five-spans,the maximum capacity for overhead is 300mt,the highest point of eave ... thousand square meters,continuous four-spans,the maximum capacity for overhead is 65mt plus 65mt,the highest point ... double span,its span is 59 meters,30mt capacity overhead crane,its eave height is 19. ...