# Surveying Homework

###### Surveying Homework

Surveying homework. 6.4 An add tape of 101 ft is incorrectly recorded as 100 ft for a 200 ft distance. What is the correct distance? 6.5* List five types of common errors in taping. Homework Problems: 6.4 6.5 6.20 6.29 6.30 6.20 In Figure 6.14, he, hr, z, and the measured slope length L were 5.53 ft, 6.00 ft, 93°20’06” and 489.65 ft, respectively. Calculate the horizontal length between A and B if a total station measures the distance.

###### Surveying Homework

6.21* Similar to Problem 6.20, except that the values were 1.45 m, 1.55 m, 96°05’33” and 1663.254 m, respectively. 6.22 What is the actual wavelength and velocity of a near-infrared beam (1 = 0.901 um) of light modulated at a frequency of 330 MHz through an atmosphere with a dry bulb temperature, T, of 26°C; a relative humidity, h, of 75%; and an atmospheric pressure of 893 hPa? 6.23

What is the actual wavelength and velocity of a near-infrared beam (1 = 0.901 um) of light modulated at a frequency of 330 MHz through an atmosphere with a dry bulb temperature, T, of 26°C; a relative humidity, h, of 75%; and an atmospheric pressure of 893 hPa? 6.24 If the temperature and pressure at measurement time are 18°C and 760 mm Hg, respectively, what will be the error in electronic measurement of a line 3 km long if the temperature at the time of observing is recorded 10°C too high? Will the ob- served distance be too long or too short? 6.25* The standard deviation of taping a 30 m distance is \$5 mm.

###### Surveying Homework

What should it be for a 90 m distance? 6.26 Determine the most probable length of a line AB, the standard deviation, and the 95% error of the measurement for the following series of taped observations made under the same conditions: 215.382, 215.381, 215.384, 215.374, 215.391, 215.382, 215.374, 215.382, 215.389, and 215.387 m. 6.27 If an EDM instrument has a purported accuracy capability of + (1.5 mm + 2ppm), what error can be expected in a measured distance of: (a) 25 m, (b) 483.40 ft, (e) 387.563 m? (Assume that the instrument and target miscentering errors are equal to zero.) 6.28 The estimated error for both instrument and target miscentering errors is \$1.5 mm; For the EDM in Problem 6.27, what is the estimated error in the observed distances?

6.29 If a certain EDM instrument has an accuracy capability of + (2 mm + 2 ppm); what is the precision of measurements , in terms of parts per million, for line lengths of: (a) 20.000 m, (b) 200.000 m, (e) 2000.000 m? (Assume that the instrument and target miscentering errors are equal to zero.) 6.30 The estimated error for both instrument and target miscentering errors is +1.5 mm. For the EDM and distances listed in Problem 6.29, what is the estimated error in each distance? What is the precision of the measurements in terms of parts per 6.31 Create a computational program that solves Problem 6.22. million?

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