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Questions: 1.) If an EDM instrument has a stated accuracy of +(5 mm + 5ppm), what error can be expected in a measured distance of (a) 3.25 miles (b) 2000.00 feet? Express answers in mm.

Questions: 1.) If an EDM instrument has a stated accuracy of +(5 mm + 5ppm), what error can be expected in a measured distance of (a) 3.25 miles (b) 2000.00 feet? Express answers in mm.

Structural Analysis
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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Questions: 1.) If an EDM instrument has a stated accuracy of ±(5 mm + 5ppm), what error can be expected in a measured distance of (a) 3.25 miles (b) 2000.00 feet? Express answers in mm. 2.) Why must an atmospheric correction be applied to a distance measured with an EDM instrument? 3.) Calculate the horizontal distance between point A and B if a slope distance of 3,562.15 feet is measured with an EDM instrument. The EDM is set up at point A and has a height of 5.30 feet. The reflector is set up at point B and has a height of 4.27 feet. The elevation of point A is equal to 752.60 and the elevation of point B is equal to 627.12. 4.) If a temperature of 32°F and barometric pressure reading of 29.5 in. Hg is observed, determine the correction actor for atmospheric conditions. Use the attached graph. 5.) Points A, B and C form a fixed triangle in the field. A total station instrument occupies point C and is used to determine a distance of 1783.32 feet to point A (side CA), and 301.62 feet to point B (side CB). determined to be 121°02'15", what is the distance of side AB? If the interior angle at point C is
Transcribed Image Text:Questions: 1.) If an EDM instrument has a stated accuracy of ±(5 mm + 5ppm), what error can be expected in a measured distance of (a) 3.25 miles (b) 2000.00 feet? Express answers in mm. 2.) Why must an atmospheric correction be applied to a distance measured with an EDM instrument? 3.) Calculate the horizontal distance between point A and B if a slope distance of 3,562.15 feet is measured with an EDM instrument. The EDM is set up at point A and has a height of 5.30 feet. The reflector is set up at point B and has a height of 4.27 feet. The elevation of point A is equal to 752.60 and the elevation of point B is equal to 627.12. 4.) If a temperature of 32°F and barometric pressure reading of 29.5 in. Hg is observed, determine the correction actor for atmospheric conditions. Use the attached graph. 5.) Points A, B and C form a fixed triangle in the field. A total station instrument occupies point C and is used to determine a distance of 1783.32 feet to point A (side CA), and 301.62 feet to point B (side CB). determined to be 121°02'15", what is the distance of side AB? If the interior angle at point C is
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