Question

7. Figure 3 is a table with an initial elevation, backsights, HIls, foresights, and computed elevations for a level loop, along with lengths of each leg. The loop does not close by computed elevations. Cum. RoundedAdjusted FS Elev Lengths l Length] Adjustment adjustment Elevation Raw Sta BM1 BS 452.35 TP1 TP2 BM2 4.67 457.02 6.45 459.14 6.94 460.52 4.33 452.69 5.56 453.58 5.54 454.98 4.55 454.91 4.48 459.46 5.80 460.71 5.25 461.59 2.79 459.20 BM3 140 ??? 4.37 456.34 110 BM4 5.18 456.41 120 TP4 5.34 457.78 90 BM1 .49 452.29 Beg. End Total Elev. 452.35 Elev. 452.29 Length Diff Adj. fact Figure 3: Level loop a) Find the error, sum the lengths, and compute the adjustment factor (feet of adjust- ment per foot into the level loop), (5 pts) b) Apply the adjustment to each station(distance into the loop) to compute an ad- justment for each stations. Place those adjustments in the third to the last column of the table. (5 pts) to last column of the table. (5 pts) adjustment should be the same as the beginning elevation. (5 pts) c) Round the adjustments to the nearest 0.01 ft and place those values in the second d) Compute the adjusted elevations for each station in the run. HINT: BM1 after

Answer 1