Surveying FS

Answer: C -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