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
Transcribed Image Text:À base line was measured by tape suspended in catenary under a pull of 145N, the mean
temperature being 14°C. The lengths of various segments of the tape and the difference in level
of the two ends of a segment are given in Table.
If the tape was standardized on the flat under a pull of 95 N at 18°C, determine the correct
length of the line by considering the followings.
g = 9.81 m/s?
Cross-sectional area of the tape = 3.35 mm²
Mass of the tape = 0.025 kg/m
Scanned by CamScanner
Coefficient of linear expansion 0.9 × 10° per °C
%3D
Young's modulus = 14.8 x 10 N/mm
Difference in
Вay'Span
Length (m)
level (m)
29.988
+ 0.346
29.895
- 0.214
3
29.838
+ 0.309
4
29.910
- 0.106
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