The heights of new points P1 and P2 were determined from four existing benchmarks A, B, C and D by using the levelling s

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The Heights Of New Points P1 And P2 Were Determined From Four Existing Benchmarks A B C And D By Using The Levelling S 1 (58.27 KiB) Viewed 14 times

The heights of new points P1 and P2 were determined from four existing benchmarks A, B, C and D by using the levelling survey, see the survey scheme. The measurements and variances are summarized in the table. Height of benchmark [mn] Height difference [m] variance [cm] = = = HA-100.00 m AhAP1 = 1.01 m HB = 101.00 m AhBP1 = 0.06 m H = 103,00 m Ahp2c = 1.09 m HD = 104.00 m AhP2D = 2.04 m AhP1P2 = 1.03 m Apply the conditional least-squares adjustment to compute the heights of the points P1 and P2 and their standard deviations. 1 cm2 2 cm2 1 cm2 1 cm2 3 cm2 С ADAP Ah PC PL shpP2 ALBP B shBD D ОНp1 The result is: Hp1 = 101.010.04 m, Hp2 = 101.9580.04 m = 101.01+0.02 m, Hp2 = 101.95#.03 m HP1 = 101.01+0.03 m, Hp2 = 101.95+0.03 m = 101.01+0.02 m. Hp2 = 101.950.04 m Hp1 =