FIELD: transport.
SUBSTANCE: invention relates to automotive industry. Vehicle bottom structure comprises main carcass and floor panel. Main carcass extends in vehicle lengthwise axis. Floor panel is jointed to main carcass. Main carcass has stiffness ribs extending in vehicle lengthwise axis. Stiffness rib depth increases in direction toward vehicle rear.
EFFECT: higher stiffness.
17 cl, 23 dwg
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