has elevations of 660m, 625m, and 600m respectively. B is in between A and C and is 10km from A and 12km from C. a. Considering the effect of curvature and refraction correction, what is the clearance or obstruction of the line of sight at B considering that C is visible from A. b. If a 5m tower is erected on top of B, what would be the height of equal towers to be erected at A and C in order that A, B and C will be intervisible. c. What should be the height of tower to be erected

Q: 5. Four hills A, B, C, and D having elevations 247, 236, 314, and 396 respectively. The distance of…

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Q: Two hills A and B, 90 km apart, has elevations of 60m and 200m, respectively. What would be the…

A:

Q: Two hills A and B, 90 km apart, has elevations of 60m and 200m, respectively. What would be the…

A: Given: Two hills A and B, 90 km apart, has elevations of 60m and 200m, respectively. To determine:…

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A:

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Q: (b) (i) Two points A and B are 1530 m apart across a wide river. The following reciprocal evels are…

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Q: Considering the effects of curvature and refraction, the difference in elevation of points B and C…

A:

Q: Find combined correction for curvature and refraction for 1.29 km? a) 0.112 m b) 0.128 m c) 0.212m…

A: Given data : Distance (D)=1.29 km

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Q: A transit is set up at point B which is between A and C. The vertical angle observed towards A is…

A: Given  : Height of instrument at B H.IB = 1.5m Elevation of A ha=146.32m

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A: Given Distance = 1181.7m = 1.1817km

Q: TRIGONOMETRIC LEVELING. A vertical angle of -12°25’ is measured to the top of a water tank from an…

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A: Since the curvature of earth is not horizontal. So lets find out the correction due to earth…

Q: Situation 1] From an instrument set up at point A, the angle of elevation of point B is +16°XY while…

A:

Q: From point A in between B and C the angles of elevation of B and C are 18°30' and 8º15'…

A: The given data is shown below:

Q: Considering the effects of curvature and refraction, the difference elevation of points B and C is…

A: Given: The elevation difference of points B and C is 111.356 m. The angle of elevation of B is…

Q: Compute the refraction error for a distance 1226.3 m. red

A: Given that,  Distance d = 1226.3 m                   d= 1.2263 Km To calculate refraction error (Cr)…

Q: Point A is in between points B and C. the distance of B and C are 2000 m and 3000 m, respectively.…

A:

Q: Problem 1. The elevation of station Alpha is 680 m while that of Charlie is 620 m. In between…

A: Note : All subdivisions are answered below

Q: Three hills A, B and C are at elevation 135m, 146m, and 154m respectively above sea level. Distance…

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Q: A is a point having an elevation of 125.64 m., B and C are points of unknown elevation, B is in…

A: Given:-  A is a point having an elevation of 125.64 m., B and C are points of unknown elevation, B…

Q: Two hills 100 km apart has elevations of 80 m and 230 m respectively. What would be the minimum…

A: Correction due to curvature and refraction  is 0.0673d2.

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Q: 22. Find combined correction for curvature and refraction for 3400 m?

A:

Q: Calculate the combined correction för curvature and refraction (in m) for a distance of 2 km.

A:

Q: From an instrument set up at point A, the angle of elevation of point B is +16°81' while point C is…

A: Given, Angle of elevation of point B=+16°81' Angle of elevation of point C=+7°42' Considering the…

Q: 1. For the figure shown, a vertical angle of - 14°30' is taken to a target 1.75 m above point 3. The…

A:

Q: 4. Four hills A, B, C, and D having elevations 247, 236, 314, and 396 respectively. The distance of…

A:

Q: Situation A transit is set up at point B which is between A nd C. The vertical angle observed…

A: We are authorized to answer one question at a time since you have not mentioned which question you…

Q: 1. Three Hills A, B and C has elevations of 660m, 625m, and 600m respectively. B is in between A and…

A: Given :- Elevation of hill A = 660m Elevation of hill B=625m Elevation of hill C=600m AB= 10km BC=…

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A:

Q: Problem 2. A transit is set up at point B which is between A and B. The vertical angle observed…

A: Calculate the vertical difference in elevation between the line of sight (LOS) and A,    tan α =…

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A: Transit theodolite: The theodolite is known as the transit theodolite when its telescope is…

Q: Three hills A, B and C has elevations of 660 m, 625 m and 606 meters respectively. B is in between A…

A:

Q: 1. Four hills A, B, C and D are in straight line. The elevations are A 247 m., B = 236 m., C = 314…

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A: the question solve by the trigonometric leveling . RL of point 1 is less than point 2 then point 1…

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A: Given:- distance of lighthouse=25km eye of man=1.5 m above  sea level To find:- h

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A:

Q: A is a point having an elevation of 125.64 m., B and C are points of unknown elevation, B is in…

A: Determine the difference in elevation between B and C

Q: The top of a mast signal 2000 meters away was sighted through a transit with recorded vertical angle…

A: Given, H = 6.5 m  EB = 175.71m

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A: Correction for curvature is used because of curvature the points appear  lower than they actually…

Q: Two hills A and B, 90 km apart, has elevations of 60m and 200m respectively. What would be the…

A:

Q: situation 1] From an instrument set up at point A, the angle of elevation of point B is +16 81'…

A: To find :

Q: Two hills 90km apart has elevation of 60m and 200m. What would be the minimum height of the tower…

A: DIstance between two hills = 90km Height of two hills = 60m and 200m   It has been asked in the…

Q: From point A in between B and C, the angles of elevation of B and C are 18o30' and 8o15'…

A: Given data in question  Angles Distance between points Elevation of point A from MSL. To find out…

Q: Four hills A, B, C and D are in straight line. The elevations are A = 247 m, B = 236 m, C = 314 m,…

A: Consider the hills, A, C, and D only. Let the height of towers at A and D be x. The elevation of the…

Q: line of levels 9.36 km is run to check the elevation of bm2 which has been found to be 31.388 meters…

A: The correction due to earth curvature is given by   C = -0.0785 d2 (distance in km) Correction due…

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.