Find the equal height of towers at triangulation stations A and C so that line AC will clear the elevated ground between A and C by 6m. with the instrument set at point B, the observed vertical angle to ground station A is 0 0 55’ and the vertical angle to ground station C is 0 0 48’. Elevation of A is 237m. Distance AB is 10km and distance of BC is 8.7km. Yhe instrument set-up at B is 2.7m above the ground. Use hcr= 0.067k ^2

Q: Q1 (a) Q1(b) RL TBM A RL TBM B RL TBM A RL TBM B AAA.AAA ВBB.BB AAA.AAA ВВB.ВB 135.975 134.665…

A: a. Rise and Fall method: Arithmetic check:…

Q: Q- In a leveling work, sum of the Back Sight (B.S.) and Fore Sight (F.S.) have been found to be…

A: A leveling work- Sum of back sights- ∑BS=3.085 m, Sum of fore sights- ∑FS=5.645 m. The reduced level…

Q: Q4: a. The following readings were observed successfully with a leveling instrument. The instrument…

A:

Q: The survey works were carried out using the leveling device and took 0.895, 1.305, 2.800, 1.960,…

A:

Q: 6-12. What is the angular misclosure of the closed traverse below? Ans.: A (a.) (b.) (C.) (d.) B85°…

A:

Q: STATION H.I H. ANGLE H. DIST V. DIST ELEV. ft ft ft Instrument station #1 (between BM and station…

A: Height of the instrument =elevation +vertical height and   elevation =height  of indtrument -vetical…

Q: omplete the fieldwork report for this data: STA BS HI FS IFS ELEV Remarks BM-A 0.95 101.345 m 0+000…

A: To complete the fieldwork report

Control Survey and Geodetic reductions

Control surveys or survey controls are used to establish reference points as a basis for various construction activities. Vertical and horizontal control points are to be established in a control survey to increase accuracy. After establishing the control points, all other types of surveys such as topographic, right-of-way, aerial mapping, construction layout, boundary surveys, and utility mapping can be worked upon so that control networks can be formed. The place from which the observations are made is called a survey station.