BS 2853:1957 specifies the minimum requirements for the design and testing of fixed overhead runway beams made from rolled sections of steel.
This British Standard applies to the runway beams and their components only. It does not apply to supporting structures, to traveling trolleys and lifting appliances operating on the beams, nor to crane gantries or rails.
The aim of this standard is to specify such fundamental principles as appear desirable to ensure reliability and safety of overhead runways, without hampering the freedom of the runway maker in his selection of the most appropriate design for the purpose in view.