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[quote user="Paul_D_North_Jr"]Volker Landwehr said (above): "To avoid misalignment at joints dowels or tongue and groove constructions can be used." [/quote] This comment was directed ar the concrete highway problems. [quote user="Paul_D_North_Jr"]Those methods address only the deflection/ displacement (i.e., in the Y and Z directions) at the joint, and not the slopes or angles approaching and leaving the joint.[/quote] As already said, Boegl addresses this topic. Thr rail seats are about 13'' from the joint. The rail will compensate for some of this angles. [quote user="Paul_D_North_Jr"]I'd still like to know what the average and maximum 'normal' axle loads are used for the design and actual operation of such slab-track systems, as well as the speeds. [/quote] For Europe the axle load is 25 tons. The ICE trains have axle loads of 20 tons and speeds of up to 200 mph. The Chinese high speed trains have axle loads of 19 tons and speeds up to 220 mph. If I read the diagram on page 4 correctly, axle loads of 42 tons at 68 mph are possible. Regards, Volker
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