The plastic calculation method was introduced into steel construction in the early 70's. The elastic calculation method was fully perfected during the period 1955-1965. Not until the second half of the 50's was further development undertaken, in both America and Germany. In 1942 he published two articles about his calculation method in the professional journal Technický Obzor. The initial impetus for the (elastic) calculation method was given in the former Czechoslovakia by František Faltus. After all, this is not a component that can be dimensioned "intuitively". efficiently?Ī suitable calculation method has proved essential for the broader application of castellated beams. The first patent application for castellated beams dates from 1937 the British Patent Office granted the - extremely comprehensive and exhaustive - patent in 1939 to the British applicant G.M. These were roof beams with a free span of 12 metres in a factory in Doudlevec (Czech Republic). The earliest known castellated beams were designed and manufactured in the early 30's by the Skoda factories in Pilsner. So the introduction of the castellated beam was closely connected with the development of electrical welding technology in steel construction, at about the end of the 1920's. About the development of the castellated beamĬastellated beams are electrically welded.
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