The observed temperature when the length of tape is 50 m is 29.6 °C and a pull of 15 kilos IS applied. During the measurement, the temperature recorded is 18.9 °C and the applied pull is 15 kilos. The base line is measured to be 1632.48 m. Determine the correct length of the line. Use coefficient of thermal expansion, 0.0000116/°C.
The observed temperature when the length of tape is 50 m is 29.6 °C and a pull of 15 kilos IS applied. During the measurement, the temperature recorded is 18.9 °C and the applied pull is 15 kilos. The base line is measured to be 1632.48 m. Determine the correct length of the line. Use coefficient of thermal expansion, 0.0000116/°C.
Chapter2: Loads On Structures
Section: Chapter Questions
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Transcribed Image Text:1.
The observed temperature when the length
of tape is 50 m is 29.6 °C and a pull of
15
kilos
During the
IS
applied.
measurement,
the temperature recorded is
18.9 °C and the applied pull is 15 kilos.
The base line is measured to be 1632.48
m. Determine the correct length of the line.
Use coefficient of
thermal
expansion,
0.00001 16/°C.
2.
A 30 m steel tape standardized at 20°C
and supported throughout under a tension
of 5.45 kg was found to be 30.012 m
long. The tape had a cross sectional area
of 0.05 cm² and a weight of 0.03967
kg/m. This tape was held horizontal,
supported at the ends only, with a
constant tension of 9.09 kg, to measure a
line from A to B in three segments. The
data listed in the following table were
recorded.
Segment Distance (m) Temp. (°C)
A-1
30.000
14
30.000
15
21.151
16
Determine the correct length of line AB.
1-2
2-B
3.
With the transit at point A and the line of
sight horizontal, the stadia intercept at B
was found to be 1.94 m. If the stadia
constant is 0.3 and AB 194.2 m, find
the stadia interval factor.
=
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