On top of a mountain 100 meters high, Hubert saw and fell in love with a girl who is at the foot of the mountain. How far is the girl from the mountain if the angle of depression formed by Hubert's line of sight with the horizontal is 48°10' ?

Q: How far will a horizontal line depart from the Earth’s surface in 1 km? 5 km? 10 km?

A: Given:- The distance of the horizontal line from the Earth's surface = 1 km, 5 km, 10 km To…

Q: A known point on the ground (labeled as “c") has an elevation of 535 ft., x coordinate on left photo…

A: Parralax of point C  Pc=54.21--12.11Pc=66.32mm Parralax of point A Pa=35.68--14.33Pa=50.01mm

Q: stadia reduction table, what is the difference in elevation if the observed vertical angle is…

A: Vertical angle 19°24" Staff intercept =s Difference in election v

Q: [Exercise 1] Measure the height difference between points A and B with a level instrument. It is…

A: Elevation of point A (Ha) = 12.658 m Centre cross reading at point A = 1526mm Centre cross reading…

Q: A ball is projected at such an angle that the horizontal range is three times the maximum height.…

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Q: determine the horizontal distance from the transit to point b

A: Given Data:

Q: Determine the y-coordinate of the centroid of the shaded area. 0.33h / 61 61° Answer:J =

A:

Q: Please explain how to find the bearings/azimuths. (Why is it addition or substraction?)

A: Bearings  Horizontal angle measured for any line with respect to North -South direction is called…

Q: It is the process of determining the elevation of a certain point from the point with known…

A: The process of establishing the height of one level in relation to another is known as leveling.

Q: A polygon has the following interior angles: 135°, 135°, 148°, 90°, 178°, 80°, 180°, 60°, 72°. Will…

A: Given data, Interior angles of a polygon are 135°, 135°, 148°, 90°, 178°, 80°, 180°, 60°, 72°

Q: Four interior angles of a five-sided polygon traverse were observed as A = 110°4759", B =…

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Q: In determining the stadia interval factor (K) of a transit, a stadia rod was held vertically at…

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Q: It is found that the departed line of sights from the horizontal are 0.15 m (Rod at A) and 0.20 m…

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Q: 3.9 For a given soil, the following are given: G, = 2.67; moist unit weight, y = 112 lb/ft’; and…

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Q: A vertical angle of +25°15' is read to a target 1.75m above point B. The measured inclined distance…

A:

Q: List the categories of variations in magnetic declination?

A: Answer List the categories of variations in magnetic declination Daily Variation Annual Variation…

Q: 1. An angle measuring 0.001o is needed to complete half of a revolution. Given these circumstances,…

A:

Q: What is the angle in degrees,

A: Angle in degrees =               x2 - 4y2 - 2x - 63 = 0 (standard equation = x2a2 - y2b2 = 1)…

Q: How can closing the horizon check your measured angle? Subject : Surveying

A: Horizon closure:

Q: Four interior angles of a five-sided polygon traverse were observed as A = 110°4759", B =…

A: Observation Station  Interior Angle  A 110°47'59" B 121°06'12'' C 122°33'32" D 114°02'25"…

Q: The rotational unit has angle markings every 1 degree. What is the reading error on any angle…

A: Angle measurement in any compass surveying or other dial equipment needs the minimum or least count…

Q: Express the following zenith distances as vertical angles: 40°30', 0°10', -4°50'.

A: To find the vertical angle

Q: Let A be a point of elevation 130.48m above datum, and let B and C be points of unknown elevation.…

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Q: Trigonometric Leveling - correct for curvature and refraction Elevation of Point A = 696.48' Zenith…

A: This question is related to Trigonometric Levelling from Surveying Engineering. In this problem we…

Q: In surveying, Why is elevation not relative to the ellipsoid?

A: The capability to precisely compute local elevation is essential for any job site assessment wherein…

Q: A 55°25' D S 80°21'E N 85°31'W B S 6°19'E C For the accompanying figure, what is the interior angle…

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Q: Problem 3 X is a point having an elevation of 756.32 m above the datum. Point Y and Z are of unknown…

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Q: Four interior angles of a five-sided polygon traverse were observed as A = 110°47'59", B =…

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Q: What is the average rate of change of viewing angle between 35 and 50 feet? What distance d gives a…

A: Rates of change describe how output quantities change in relation to changes in input quantities.…

Q: A slope distance of 465.89m is measured between two points with a slope of 12o34’. What is the…

A: Given: The slope distance is 465.89 m. The angle is 12o34’ or 12.57o.

Q: 1.1 Estimate the following angles at city 55.70°N, 12.6°E at 14:30 hours on March 20: (a)…

A: As per question,

Q: The measured photo coordinates of images a and b of two ground points A and B are x =+ 45.35 mm; y =…

A:

Q: What are control towers in airport? DoganiI

A: As per Bartleby honor code answer first question question 6. Control Towers

Q: a) What is the stadia constant of the instrument? b) What is the stadia interval factor? c) What…

A: NOTE : Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Determine the y-coordinate of the centroid of

A: tan53=haa=htan53andtan53=0.25hbb=0.25htan53so,A1=12h×2ay1=2h3A2=12h×2by1=20.25h3

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.