Assignment No 1 - SUR 3520 Measurement Science Spring 2008...

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SUR 3520: Measurement Science Spring 2008 – Section 4218 Assignment No. 1 Student UFID: 1667-6117 Student Name: Charles K. Baxley 1.1 Identify the direct and indirect measurements used in computing traverse station coordinates. 1.2 In your own words, define the difference between precision and accuracy. Precision requires multiple measurements to be near the same value, whereas accuracy requires a measurement to be near an exact value or true value . 1.3 In a table, list possible mistakes, systematic and random errors when measuring a. A distance with a tape. b. A distance with an EDM. c. An angle with a total station. d. The difference in elevation using an automatic level. Measuring: Mistake/Blunder Systematic Error Random Error A distance with a tape Misreading the numbers on the tape Non-standard temperature Small errors in reading graduation on tape A distance with an EDM Wrong PPM set Instrument not calibrated Instrument not exactly over point An angle with a total station writing down wrong numbers displayed Index error Legs sinking into the asphalt The diff. in elev. using an automatic level Misreading level rod Level rod non- standard length Leveling instrument not completely level during readings 1.4 In a tabular form, identify each of the following errors according to its source
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Assignment No 1 - SUR 3520 Measurement Science Spring 2008...

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