Question two (10 Marks): (CLOI: 10%, CLO2: 40%, CLO3: 40%, & CLO4: 10%) (a) Figure 2 shows a small level net in which BM

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Question Two 10 Marks Cloi 10 Clo2 40 Clo3 40 Clo4 10 A Figure 2 Shows A Small Level Net In Which Bm 1 (26.86 KiB) Viewed 225 times

Question two (10 Marks): (CLOI: 10%, CLO2: 40%, CLO3: 40%, & CLO4: 10%) (a) Figure 2 shows a small level net in which BM is a benchmark with the known elevation of 281.13 m. The following differences in elevation (AElev.) are observed using a direct leveling procedure. The observations have weights as they are given in the third column in Table 3. Assuming that all observations are uncorrelated, use the Least Square criterion to (1) estimate the elevations of A, B, and C. (2) Show the residuals and the adjusted observations (AElev.). (3) Estimate Reference Variance of the unit weight (5) (4) Estimate the standard deviations for the unknown parameters M281130 Table 3: Observations and weights of Level Network Line Observed, AElev. (m) Leveled Distance (m) 1 11.973 20 10.94 12 22.932 15 21.04 28 31.891 20 8.983 26 Figure 2: A Level 20 network 2 3 4 5 6