Determine the error of a line, 256.32 m long, measured using a 50 m steel tape at 38 °C. The steel tape was calibrated at 20 °C. 0.0355m (too short) 0.0535m (too short 0.0355m (too long) 0.0535m (too long)

Determine the error of a line, 256.32 m long, measured using a 50 m steel tape at 38 °C. The steel tape was calibrated at 20 °C. 0.0355m (too short) 0.0535m (too short 0.0355m (too long) 0.0535m (too long)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

Determine the error of a line, 256.32 m long, measured using a 50 m steel tape at 38 °C. The steel
tape was calibrated at 20 °C.
0.0355m (too short)
0.0535m (too short
0.0355m (too long)
0.0535m (too long)

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A steel tape standardized at 20degree celcius and supported through out under tension of 90N Was found to be 30.377m long. The tape had a cross sectional area of 55mm^2 and a weight of 73g/m. This tape was used supported at the ends only with a constant tension of 78N to measure a line from A to B in nine segments. The data given in the following table were recorded. Apply correction for tape, length,temperature,pull,sag and tape not horizontal to determine the correct length of the line Difference in Elevation Cm) 0-392 Section Meacured Recarded Distance) Tempergrare A-1 15 1- 2 30 15 0.301 2-3 30 16 O.191 3-4 16 0-255 4-5 30 16 0-38 5-6 30 8.636 6-7 0.782 7-6 30 0-825 8-8 25.348 18 0.578 Sum = 265-348 m
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