1. a certain steel tape, for which the coefficient of expansion is 0.00000645, is exactly 100 feet long at 68 fahrenheit. At 15 fahrenheit the length of the tape is

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- April 3rd 2008, 05:34 PMhamadouousmanelinear surveying
1. a certain steel tape, for which the coefficient of expansion is 0.00000645, is exactly 100 feet long at 68 fahrenheit. At 15 fahrenheit the length of the tape is

- April 3rd 2008, 07:04 PMh2osprey
Look under "thermal expansion coefficient" in the link below - you should be able to construct an equation and get your answer. Basically the coefficient = [(change in length) / (change in temp)] / original length

Coefficient of thermal expansion - Wikipedia, the free encyclopedia - April 3rd 2008, 07:34 PMsamdmansamtemp correction of steel tape
C=k(T1-T)L

C= correction in legth

k=thermal coefficient of expansion

T1=tape temp at time of measurement ie (15 deg)

T=tape temp when it has standard length (68 deg)

L= recorded measurement(100 ft)

Therefore

length of tape at 15 degrees = L+C