Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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- Problem 8: The following are the results of the measurement of a survey line between two tripod heads, where the tape was allowed to Sag Line AB Slope Length Vertical Angle Temperature Tension 25.510m 6° 00' 20 °C 80 N The Tape weighted 0.25 N/m; had cross sectional Area of 3mm2 and was actually 30.005 m long at the time of measurements. Where the nominal length of the tape is 30.0 m Calculate the corrected horizontal length of the Line ABarrow_forwardPLEASE FIND SOLUTION THAT WILL COME UP WITH THE SAME ANSWER The two-peg test is used to determine if the line of sight of an engineer’s level is in adjustment, and the following rod readings are taken: with instrument set up near A, rod reading on A is 1.623 m, rod reading on B is 2.875 m; with instrument set up near B, rod reading on B is 1.622 m, and rod reading on A is 0.362 m. i. The correct rod reading on A to give a level line of sight with the instrument still set up near B should be? answer: 0.366 m ii. In order to adjust the line of sight, the horizontal cross hairs should be moved? answer: Upward by 0.004 marrow_forward6. A line was measured 5 times with a tape on a windy day with these results: 286.85, 286.96, 286.77, 286.80, and 286.88 ft. Find the mean and standard deviation of a single measurement. Then, the measurement was repeated 15 more times, giving a mean of 286.87 ft and a standard deviation of 0.06 ft. Have there been enough repetitions to assure that the standard error of the mean is less than 0.02 ft?arrow_forward
- The error of curvature and refraction of distance 1243.36 m, is: Answer: Choose... + What is the percentage of superelevation of a road with a 70 kph design speed and curve radius 1750.36 m? Answer: Choose... + If the systematic error in one measurement 12 mm, the total systematic errors in 7 measurements is: Answer:arrow_forwardA line AC was observed in two sections AB and BC, with lengths and standard deviations listed below. What is the total length AC, and its standard deviation?(a) AB = 60.00 ± 0.015 ft; BC = 86.13 ± 0.018 ft(b) AB = 30.000 ± 0.005 m; 15.413 ± 0.005 marrow_forwardDetermine: (a) The probable error of the mean in Taping Operation 1. (b) The probable error of the mean in Taping Operation 2. (c) The combined most probable measurement of the frontage, in meters. Answer these questions using this taping scenario. Two surveying tapes were used in measuring the frontage of an open field. The resulting measurements are as follows: Taping Operation 1 Taping Operation 2 300.977m 300.761m 300.415m 300.772m 299.743m 300.776m 299.994m 300.713marrow_forward
- In tacheometry survey, an intercept of 0.755m was recorded on a staff which was believed to vertical, and the vertical angle measured on the theodolite was +15º. Actually, the staff which was 4 metres long was 0.14m out of plumb bob and leaning backwards away from the instrument position. Assuming it was an anallatic instrument with a multiplying constant of 100, what would have been the error in the computed horizontal distance?arrow_forwardAn accidental or compensating error can be eliminated by proper procedures. True Falsearrow_forwardA line of three-wire differential levels goes from benchmark Gloria to benchmark Carey. The length of the line was determined to be 2097 m. The instrument had a stated compensator accuracy of pm 1.4 mm/ km. The instrument–rod combination had an estimated reading error of 0.4 mm per 40 m. Sight distances were kept to approximately 50 5 m. If the observed difference in elevation is 15.601 m, what is the estimated error in the final elevation difference? If benchmark Gloria had a fixed elevation of 231.071 m and Carey had a fixed elevation of 246.660 m, did the job meet acceptable closure limits at a 95% level of confidence? Justify your answer statistically.arrow_forward
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