u043fu0440u043eu043bu0435u0442u043du0430u00a0 girder bridge and gantry cranes u0434u043bu00a0 using u0433u0440u0443u0437u043eu043fu043eu0434u044au0435u043cu043du0443u044e cart or u0442u0435u043bu044cu0444u0435u0440, u0441u043eu0434u0435u0440u0436u0430u0449u0430u00a0 upper flat and lower flat u043eu0441u043du043eu0432u0430u043du0438u00a0 as u043fu0440u00a0 u043cu043eu0443u0433u043eu043bu044cu043du043eu0439 form in terms of the plates and the side walls in the form of plateslocated in angle to each other and to the glass u0441u0432u00a0u0437u0430u043du043du044bu0435 grounds with education u0442u0440u0430u043fu0435u0446u0438u0435u0432u0438u0434u043du043eu0433u043e u0441u0435u0447u0435u043du0438u00a0 with less ground in the zone of the lower races other plates, u043eu0442u043bu0438u0447u0430u044eu0449u0430u00a0u0441u00a0, accomplished the welded box girder, the side walls welded to the lower plate under the internal angle is, siri the width of the upper plate, a lower inside cavityformed by side walls and u043eu0441u043du043eu0432u0430u043du0438u00a0u043cu0438 are the diaphragm, the width of the lower plate is more than the length of the smaller u043eu0441u043du043eu0432u0430u043du0438u00a0 u0442u0440u0430u043fu0435u0446u0438u0435u0432u0438u0434u043du043eu0433u043e u0441u0435u0447u0435u043du0438 in the zone of the lower plate u00a0 is u0434u043bu00a0 u043eu0431u0440u0430u0437u043eu0432u0430u043du0438u00a0 shelves u0434u043bu00a0 running wheels u0442u0435u043bu044cu0444u0435u0440u0430 or u0433u0440u0443u0437u043eu043fu043eu0434u044au0435u043cu043du043eu0439 trolley, and the width is more than upper plate more u043eu0441u043du043eu0432u0430u043du0438u00a0 u0442u0440u0430u043fu0435u0446u0438u0435u0432u0438u0434u043du043eu0433u043e u0441u0435u0447u0435u043du0438u00a0 zone located in upper platethe thickness of the lower plate and upper plate is located over the thickness and / or the thickness of the plates, the side walls of which are not less than 1.5 times.
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