- #1
Aleisha
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Homework Statement
A concrete driveway is built from identical slabs of concrete, as shown below, which have a length, L, of 3.18 m long at 17.3 C. The concrete slabs have coefficient of linear expansion of 1.20 x 10-5 K-1 and are laid in an area where the temperature ranges from -29.8 C to 42.6 C.
Calculate the minimum lengthwise gap (Δx) that should be left between the tiles when they are laid to ensure that the tiles do not buckle when the temperature changes.
Homework Equations
Change in length=coefficient of linear expansion x original length x change in temp (Kelvin)
The Attempt at a Solution
Change in length (x)= (1.20e-5) x 3.18 x 72.4
=2.76e-3m
Answer was wrong but am confused as to how else to do it with any other equation i think i may have made an error with conversions or values needing to be used?