A line is measured as 1,200 ft at 98° F. Using a standard tape, what is the true length of the line?

Question

Quizplus · Accepted Answer

The true length of a line that is measured as 1,200 ft at 98°F is 1,200.23 using a standard tape.
Solution
Correction = (steel tape coefficient of expansion)(outside temperature - standard temperature)(measured length)
Correction = (0.00000645 * 1/°F) (98°F - 68°F) (1,200) = +0.23 ft
True length = distance + correction
True length= 1,200.00 ft + 0.23 ft = 1,200.23 ft

A Line Is Measured as 1,200 Ft at 98° F