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8. A 30 m steel tape of cross-sectional area 0.013 cm* and a total tape weight 1.1 kg was standardized at 20°C and found to be 30.020 m long between its end marks when supported throughout under a 6.8 kg pull. What is the true horizontal length of a recorded distance AB for the conditions given in the following table? (Assume horizontal taping and all full tape lengths except the last.) (12 marks) Corrections Recorded Temperature, Method of Pull, Corrected support kg Length Temp Pull Throughout 13.2 Ends only10.0 distance AB, m Sag Total distance 565.47 32 335.80 20

engineering   Civil-Engineering   
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