Question

6. A leveling job started from STRT benchmark with elevation above MSL as shown in the figure on next page The leveling run continued to points NW, SW,... , until it ended at FIN benchmark. a. Draw an approximate (not-to-scale) profile view of the leveling run. (3 marks) Point STRT1.145 m NW SW CTP | 0.755 m BS IS FS HI Elevation Remarks 282.679 m 281.534 m E 281.534 m 0.955 m 281.724 m 281.369 m 1.010 m 282.424 m281.669 m 284.149 m 281.389 m 0.970 m 282.909 m 281.454 m 281.184 m 284.854 m 1.310 m TP 1 1.725 m 1.035 m BTP 1.455 m TP 2 1.725 m NE 1.945 m FIN 0.850 m 282.059 m E- 282.079 m b. Calculate the misclosure error. (3 marks) c. If the total length of the leveling run is 2.5 km and a 3rd order surveying is required, check if you can adjust the above calculated misclosure (misclosure adjustment includes filling the following table and re-checking the final misclosure).(4 marks) Cumulative # of setups Adjusted Elevation Point Elevation Correction

Answer 1