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Two concrete spans of a 160 m long bridge
are placed end to end so that no room is
allowed for expansion.
T
160 m-
T+20°C
Y
If the temperature increases by 20°C, what
is the height to which the spans rise when
they buckle? Assume the thermal coefficient
of expansion is 1.2 x 10-5 (°C)-¹.
Answer in units of m.

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