A horizontal collimation test is performed on anautomatic level. With the instrument setup at point.1, the rod reading at A was 5,221 ft, and to Bitwas 5.533 ft. After moving and leveling theinstrument at point 2, the rod reading to A was4.950 ft and to B was 5.116 ft. The distancebetween the points in the test was 100 ft.YWhat is the collimation error of the instrument?Express your answer to three significant figures and include the appropriate units.6=SubmitPart BHAValueRequest AnswerWhat is the corrected reading to A from point 2?Express your answer to four significant figures and include the appropriate units.Correct reading to AUnitsdμAValueUnits

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A horizontal collimation test is performed on an automatic level. With the instrument setup at point. 1, the rod reading at A was 5,221 ft, and to Bit was 5.533 ft. After moving and leveling the instrument at point 2, the rod reading to A was 4.950 ft and to B was 5.116 ft. The distance between the points in the test was 100 ft. What is the collimation error of the instrument? Express your answer to three significant figures and include the appropriate units. 6= Submit Part B HA Value Request Answer Units Correct reading to A What is the corrected reading to A from point 2? Express your answer to four significant figures and include the appropriate units. μA P Value Units

A horizontal collimation test is performed on an automatic level. With the instrument setup at point. 1, the rod reading at A was 5,221 ft, and to Bit was 5.533 ft. After moving and leveling the instrument at point 2, the rod reading to A was 4.950 ft and to B was 5.116 ft. The distance between the points in the test was 100 ft. What is the collimation error of the instrument? Express your answer to three significant figures and include the appropriate units. 6= Submit Part B HA Value Request Answer Units Correct reading to A What is the corrected reading to A from point 2? Express your answer to four significant figures and include the appropriate units. μA P Value Units

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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A line of three-wire differential levels goes from benchmark Gloria to benchmark Carey. The length of the line was determined to be 2199 m. The instrument had a stated compensator accuracy of +0.3". The instrument-rod combination had an estimated reading error of +1 mm/km. The instrument is found to have an inclined collimation error of 1.0 mm/km, so the sight distances were kept to approximately 50 ± 5 m. If the difference in elevation observed is 15.601 m, what is the estimated error in the final elevation difference?
During testing of a dumpy level, the following observations were taken:- Instrument at A B Staff reading at A 1.035 1.115 B 2.115 2.050 Check whether the instrument is in proper adjustment. What should be the revised reading of line of collimation. When the instrument is at B? If A and B are 95 m apart then what is the angle of inclination of line of collimation?
A horizontal collimation test is performed on an automatic level following the pro- cedures just described. With the instrument setup at point 1, the rod reading at A was 5.630 ft, and to B was 5.900 ft. After moving and leveling the instrument at point 2, the rod reading to A was determined to be 5.310 ft and to B to be 5.560 ft. As shown in Figure 4.21, the distance between the points was 100 ft. What is the collimation error of the instrument, and the corrected reading to A from point 2?
7. A horizontal collimation test is performed on an automatic level. With the instrument setup at point 1, the rod reading at A was 5.630 ft, and to B was 5.900 ft. After moving and leveling the instrument at point 2, the rod reading to A was determined to be 5.310 ft and to B 5.560 ft. As shown in the following figure, the distance between the points was 100 ft. What is the collimation error of the instrument, and the corrected reading to A from point 2? Rg Line of sight Horizontal 26 2 First setup RA Line of sight Horizontal A 1 Second setup 100 ft 100 ft 100 ft
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Situation 1: A two-peg test is used to check whether the ine of sight of the level is in perfect adjustment and the following rod readings are taken, with instrument set up near A, backsight on A is 1.623 m. and foresight reading on B is 2.875 m. With the instrument set up near B, backsight on B is 1.622 and a foresight on A is 0.362 m. a. Find the difference in elevation. b. What should be the correct rod reading on A to give a level line of sight with instrument still set up near B? c. What should be the correct rod reading on B to give a level line of sight with instrument still set up near A?
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