A man standing on a beach can just see the top of the lighthouse 25kms away. If his eye height level is 1.75m, determine the height of the lighthouse above the sea level. Take into account the curvature of the earth and refraction of the light.

Q: ROD READING INSTRUMENT MIDWAY INSTRUMENT SET-UP NEAR B BETWEEN A AND B A 2.07 m 3.43 m B 0.23 m 1.65…

A: Let us take a = 2.07m, b = 0.23m, c = 3.43m, d = 1.65m  Solution:-  A. True Difference in Elevation…

Q: The following data were obtained by stadia observations: vertical angle is +7°11’, upper stadia hair…

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Q: The following data were obtained by stadia observation: vertical angle, +12°30'; upper stadia hair…

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Q: 1. Three hills A, B, and C are at elevations 135m, 146m, and 154m respectively above sea level.…

A: given data, elevation of A = 135 m elevation of B = 146 m elevation of C = 154 m distance between A…

Q: n the two-peg test of a dummy level, the following observations are taken. On point A On point B…

A: Given. When Instrument is at "M", Staff reading at A= 2.672 m Staff reading at B= 1.235 m When…

Q: n a levelling work, sum of the Back Sight (B.S.) and Fore Sight (F.S.) have been found to be 3.085 m…

A: Given data: The sum of back sights, ∑BS=3.085 m The sum of fore sights, ∑FS=5.645 m. Reduced level…

Q: Reciprocal levelling was done between two points A and B, the readings of which are as shown below:…

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Q: In surveying of differential leveling runs from BM10 to BM11 at a distance of 7.5km. It was observed…

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Q: The sum of positive departures exceeds that of the negative departures by 0.47 meter. The sum of the…

A: Given data in question  ∑D = 0.47 m ∑L=-0.67 m To find out  Linear error of closure

Q: A line of levels is run from BM1 to BM2 that is 3 km long. Elevation of BM1 and BM2 was found out to…

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Q: The top of the mast signal 1750m away was sighted through a transit with recorded vertical angle of…

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Q: A surveyor conducts trigonometric leveling to determine the elevation of a target point P based on…

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Q: A transit with a stadia constant equal to 0.30 is used to determine the horizontal distance betweeen…

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Q: If a plus sight of 1.097 m is taken on BM A, elevation 305.348 m, and a minus sight of 0.832 m is…

A: Given: The back sight on A is 1.097 m. The elevation is 305.348 m. The foresight on X is 0.832 m.

Q: The height of a tower was determined by trigonometric leveling. The instrument  was set up at point…

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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: +--19-1-1"IPSSn

A: Height of collimation = RL+Backsight RL Fore sight = HC-FS

Q: 1. A 2-m subtense bar has a subtended angle of 0°56'00". What is the distance between station…

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Q: Q4B) The following table represents the field data for the traverse (KAB) using Theodolite and steel…

A: Horizontal angle to the right: KAB=75o22'25" Horizontal distance: KA=160.568 m, AB=79.215 m.

Q: The sum of negative departures exceeds that of the positive departures by 0.47 meter. The sum of the…

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Q: From an instrument station a backsight was made on a turning point and the following data were…

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Q: The readings from a level instrument are booked from a survey along the line collimation method. If…

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Q: 6. If a plus sight of 2.731 m is taken on BM A, elevation 386.702 m, and a minus sight of 1.353 m is…

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Q: Situation 2] Point B is 628.42 m from A and 724.92 m C. With a leveling instrument set up at point…

A: Cc1 (correction due to curvature & refraction between B & A) = -0.0673DBA2 =…

Q: The following data were obtained by stadia observation: vertical angle, + 12deg 51 min; upper and…

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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: 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 =…

Q: The calculations in differential leveling works are limited only to determining the heights of the…

A: Given data in question  Differential levelling work To find out  Statement above is True or False.

Q: SITUATION. The following data were obtained by stadia observations sighted at Point B: Vertical…

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Q: The staff readings, taken with a tacheometer, are 0.850m, 1.170m, and 1.525 m. Determine the…

A: Given data- The measurement device is a tacheometer- Staff readings = 0.850 m, 1.170 m & 1.525…

Q: With the instrument at K6, determine the elevation of corner 1. Height of instrument is 1.55m.…

A: Please provide the figure of problem so that the question becomes more clear to understand.

Q: 3. Given the respective reading from an internally focused instrument from a stadia rod are as…

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Q: stadia measurement was undertaken with a theodolite having an internal focusing telescope and a…

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Q: The following data were obtained by stadia observations: vertical angle is +4°17’, upper stadia hair…

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Q: 2) Given the following data: Table 1: Differential Leveling Observations Station A ΤΡΙ B TP2 A…

A: To Determine :- a. What is the loop misclosure? b. What is the corrected elevation of point B using…

Q: The following data were obtained by stadia observation: vertical angle, +12⁰30’; upper stadia hair…

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Q: The following data were obtained by stadia observations: Vertical angle = + 9°25', upper and lower…

A: It is required to find the Horizontal stadia distance Vertical stadia distance Elevation of point…

Q: The sum of negative departures exceeds that of the positive departures by 0.47 meter. The sum of the…

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Q: Situation; The angles about polnt have the following observed values: 87°0750", 125 1720", and…

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Mapping

Mapping is the process of representing the surface of the earth, objects on it, and the relative positions of the objects, to a suitable scale. In mapping, a large area of land is measured, surveyed, and plotted. The details of the objects present in the nearby surrounding area are located using conventional signs. All these processes are carried out on a flat paper known as a map.