STATION DIRECT DOUBLE MEAN REMARKS DEFL. DEFL. DEFL. Azimuth 111 - 112 = 121° 21' 111 147° 01' 293° 59' R (+) R (+) R (+) 112 116° 11' 232° 22' 113 157° 5' 314° 02' 114 59° 2' 119° 8' L (-) Σ Angle Check (Closed Traverse Only): Misclosure by sum of deflection angles: Misclosure by azimuth calculation: show work for azimuth calculations separately) Note: Add the deflection angles algebraically ( R = + Angle, L = - Angle

Q: Direct and reverse directions observed with a total station instrument from A to points B, C, D and…

A:

Q: A total station instrument occupies control point 20 and takes a BS to CP 22. The Azimuth from 20 -…

A: The backsight of CP-20 to 22 = 215°55'00'' Easting and northing of CP-20 = 8000,13000 The included…

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

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Q: Based on the level loop problem. What is the calculated elevation of BM_10 ?

A: Given: The reduced level of BM10  is 701.32'.   To Determine: The calculated elevation of BM10.

Q: 3. If the Azimuth of AB= 190° 24' and CB= 260° 44', the angle ABC a)70° 20' b)150° 20' c) 271° 80'…

A: Azimuth of AB = 190o24' Azimuth of CB = 260o44'

Q: An instrument was set up over station 1, and sights between points A and C were taken. The…

A:

Q: A differential leveling circuit began on BM Hydrant (orthometric height 5869.31 ft) and closed on BM…

A: BM Hydrant =5869.31 ftBM Rock (orthometric height 5830.03 ft). Readings  2.28 (+S) on BM Hydrant,…

Q: What is the calculated value of BM_13 before adjustment ?

A: Given:R.L. of B.M.-10=701.32'We know that,Height of instrumentHI=R.L. of B.M. of known elevation+…

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.