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The continued effort for economic design of steel structures leads to decrease their weight by shape and material optimization through the using of thin webs, high-strength steels and their effective combination with usual structural steels. The efficiency of high-strength steels using and their combination with usual structural steels is evident in the case of beams mostly subjected to bending loading. But from the complex optimization analyses follow, that the using of high-strength steels and their combination ...

The cycle transport is fast developing in the Czech Republic. Gradually becomes not only a sport and way for use free time, but also a full-fledged type of transport. For this to become cycling transport alternative to mobility in cities is need to urban development must also adapt to the needs of cycle transport. It is not only the development of cycle track, but also integrating of cycling transport into the transport system. For fluent and particularly safe keeping cycle transport is also used by interchanges. ...