8.20 A survey produces the following set of data. The angles were obtained from the average of four measurements (two face left and two face right) made with a total station. The estimated uncertainties in the observa- tions are: Iso = 2",0,= +0.005 ft. , = +0.003 ft PROGRAMMING PROBLEMS 161 The EDM instrument has a specified accuracy of (3 mm + 3 ppm). Distance Observations Angle Observations From To Distance (ft) BS Occ 2 999.99 5 3 801.55 1 Angle 19140'12" 5642'22" 12257'10" 1250211" 4338'10" 4 1680.03 2 4 5 1264.92 3 5 1 1878.82 4 5 1 Control Azimuths Control Stations From To Azimuth o(") Station Northing (ft) Easting (ft) 1000.00 1 2 21652'11" +3 1 1000.00 Compute: (a) the estimated errors in angles and distances. (b) the angular misclosure and its 95% probable error. (c) the misclosure of the traverse. *(d) the estimated misclosure error and its 95% value. (e) Did the traverse meet acceptable closures? Justify your response statistically. 1234 2 3 1234 in FS 2345 8.20 A survey produces the following set of data. The angles were obtained from the average of four measurements (two face left and two face right) made with a total station. The estimated uncertainties in the observa- tions are: Iso = 2",0,= +0.005 ft. , = +0.003 ft PROGRAMMING PROBLEMS 161 The EDM instrument has a specified accuracy of (3 mm + 3 ppm). Distance Observations Angle Observations From To Distance (ft) BS Occ 2 999.99 5 3 801.55 1 Angle 19140'12" 5642'22" 12257'10" 1250211" 4338'10" 4 1680.03 2 4 5 1264.92 3 5 1 1878.82 4 5 1 Control Azimuths Control Stations From To Azimuth o(") Station Northing (ft) Easting (ft) 1000.00 1 2 21652'11" +3 1 1000.00 Compute: (a) the estimated errors in angles and distances. (b) the angular misclosure and its 95% probable error. (c) the misclosure of the traverse. *(d) the estimated misclosure error and its 95% value. (e) Did the traverse meet acceptable closures? Justify your response statistically. 1234 2 3 1234 in FS 2345