1. find the adjusted angle. 2. correct database on Bowditch method. base on (2n-4)*90=720 n=no. of station the sum of
Posted: Mon May 02, 2022 10:21 am
1. find the adjusted angle.
2. correct database on Bowditch method.
base on (2n-4)*90=720 n=no. of station
the sum of the mean angle =812 does not equal 720
(over by 087°43´01´´) all mean angles need to be adjusted
Conduct a closed traverse survey of four control points 1, 2, 3, 4, 5 and 6. The coordinates of control station 1. Control Statione Eastings (m) Northings (m) 14 829130.4354 822678.505- The allowable range is between (±40√n) seconds, where n is the total number of instrument positions.< Find the coordinates of points 2, 3, 4, 5 and 6 based on the traverse data. Correct the traverse data using Bowditch Method, if necessary. Bowditch Method: CorrAEAB Corr Correction LAB Length of side (A - B)< CorrANABAN L = Sum of Lengths, Perimeter (Geospatial Education Platform, 2016) E LAB ΣΕ LAB EL
WCB(1-2) 167°11'19" From Target Station Station 2 3 5 6 1 Horizontal Angle Face Left Reading 1 0°00'00" 3 134°54'55" 2 30°00'00" 4 142°11'33" 3 90°00'00" 5 172 18'01" 4 0°00'00" 219°49'54" 6 5 0°00'00" 90°38'47" 6 30°00'00" 2 80°06'50" Face Right Reading 180°00'19" 314°54'56" 210°00'19" 322°11'45" 270°00'23" 352°17'44" 180°00'15" 39°50'05" 180°00'20" 270°39'07" 209°59'53" 260°06'51" Distance (m) 21.821 7.102 7.116 9.213 9.214 9.906 9.906 13.052 13.041 10.730 10.740 21.840
J دیا 9 (ح)
Traverse Record Form Station 1 2 3 5 Target Station 6 2 1 3 2 4 3 5 4 6 5 1 6 720°00'00 Horizontal Angle Face Left Face Right Mean angle Reading Reading 030°00'00" 209°59'53" 080°06'50" 260°06'51" 050 06 50 050 06 58 050 06 5411 000°00'00" 180°00'19" 134°54'55" 314°54'56" 134°54 55 134 54137 134 54 46 030°00'00" 210°00'19" 142°11'33" 322°11'45" 112 11 33 122 17 26 234 28 5911 090°00'00" 270°00'23" 172°18'01" 352°17'44" 082 18 01 082 17 21 082°17′41 000°00'00" 180°00'15" 219°49'54" 039°50'05" 219 49 54-140°10'10" 000°00'00" 180°00'20" 090 38'47" 270°39'07" 090 38 471 090 381471 9013814711 adjusted angle Horizontal distance 10.740 21.840 21.821 7.102 7.116 9.213 9.214 9.906 9.906 13.052 13.041 10.730 Total
2. correct database on Bowditch method.
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the sum of the mean angle =812 does not equal 720
(over by 087°43´01´´) all mean angles need to be adjusted
Conduct a closed traverse survey of four control points 1, 2, 3, 4, 5 and 6. The coordinates of control station 1. Control Statione Eastings (m) Northings (m) 14 829130.4354 822678.505- The allowable range is between (±40√n) seconds, where n is the total number of instrument positions.< Find the coordinates of points 2, 3, 4, 5 and 6 based on the traverse data. Correct the traverse data using Bowditch Method, if necessary. Bowditch Method: CorrAEAB Corr Correction LAB Length of side (A - B)< CorrANABAN L = Sum of Lengths, Perimeter (Geospatial Education Platform, 2016) E LAB ΣΕ LAB EL
WCB(1-2) 167°11'19" From Target Station Station 2 3 5 6 1 Horizontal Angle Face Left Reading 1 0°00'00" 3 134°54'55" 2 30°00'00" 4 142°11'33" 3 90°00'00" 5 172 18'01" 4 0°00'00" 219°49'54" 6 5 0°00'00" 90°38'47" 6 30°00'00" 2 80°06'50" Face Right Reading 180°00'19" 314°54'56" 210°00'19" 322°11'45" 270°00'23" 352°17'44" 180°00'15" 39°50'05" 180°00'20" 270°39'07" 209°59'53" 260°06'51" Distance (m) 21.821 7.102 7.116 9.213 9.214 9.906 9.906 13.052 13.041 10.730 10.740 21.840
J دیا 9 (ح)
Traverse Record Form Station 1 2 3 5 Target Station 6 2 1 3 2 4 3 5 4 6 5 1 6 720°00'00 Horizontal Angle Face Left Face Right Mean angle Reading Reading 030°00'00" 209°59'53" 080°06'50" 260°06'51" 050 06 50 050 06 58 050 06 5411 000°00'00" 180°00'19" 134°54'55" 314°54'56" 134°54 55 134 54137 134 54 46 030°00'00" 210°00'19" 142°11'33" 322°11'45" 112 11 33 122 17 26 234 28 5911 090°00'00" 270°00'23" 172°18'01" 352°17'44" 082 18 01 082 17 21 082°17′41 000°00'00" 180°00'15" 219°49'54" 039°50'05" 219 49 54-140°10'10" 000°00'00" 180°00'20" 090 38'47" 270°39'07" 090 38 471 090 381471 9013814711 adjusted angle Horizontal distance 10.740 21.840 21.821 7.102 7.116 9.213 9.214 9.906 9.906 13.052 13.041 10.730 Total