Question

A baseline measured with a steel tape gives an approximate length of 1000 m. Compute the true
length of the line when the pull at the standardization equals to 10kg. The applied pull is 25kg.
The cross sectional area of tape is 0.0645 cm2 and E = 2.11 x 106
kg/cm2
. Tm and To are 45OC and
15OC respectively. The coefficient of thermal expansion of the material of tape per OC is 11.5 x
10-6
. The difference level of the two ends of baseline is 1.5 m.

Answer 1

Answer:

A 50 M Steel Tape Was Standardized And Supported Throughout Its Whole Length And Found To Be 0.00205 M Longer At An Observed Temperature Of 31.8°C And A Pull Of 10 Kg. This Tape Was Used To Measure A Line Which Was Found To Be 662.702 M At An Average Temperature Of 24.6°C Using The Same Pull.