In the accompanying sketch, a vertical angle of −14°30' is read to a target 1.75m above point M. The measured inclined distance (S) is 644.15m and the elevation of point K is 320.70m above mean sea level. If the height of instrument at K is 1.27m, the elevation of M, considering the effects of the earth's curvature and atmospheric refraction, is?

Q: Based from the Figure 4.2, a vertical angle of +13°45' is read to a target 1.23 m above point B. The…

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Q: In the two-peg of a dummy level, the following observation are taken. INSTRUMENT SET UP NEAR…

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Q: How much refraction correction (in m) required for a distance of 500 m?

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Q: An externally focusing telescope was used to sight a stadia rod. The upper, middle, and lower hair…

A: The telescope used in stadia surveying are of three kinds: The Simple external focusing telescope.…

Q: Given the data below of record from a theodolite stadia reading, determine the distance between the…

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Q: For all the computed values with decimals, use four (4) digits after the decimal. An instrument is…

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

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

A: Given: The elevation of hill A is 135 m. The elevation of hill B is 146 m. The elevation of hill C…

Q: How much refraction correction (in m) is required for a distance of 500 m?

A: Given data : Distance (d)=500 m

Q: 1 attachment Vertical Stadia Hair Readings ROD/Point Angle Upper Middle Lower -25°15' 2.316 1.877…

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Q: In the accompanying sketch, a vertical angle of -14°30' is read to a target 3.50 m above point M.…

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Q: The images of the top and bottom of the utility pole are 129 8 mm and 125 2 mm respectively from the…

A: It is required to determine the relief displacement. ∆r=r-r' Here r is the radial distance from the…

Q: A circular water tank with a diameter of 10 m and with uniform cross section , some angles…

A: Diameter of circular tank = 10m MB is at the center of bottom base. Zenith angle = 1400

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: Survey The stadia readings with a horizontal sight on a vertical staff held 40 m away from a…

A: Given:  The stadia readings with a horizontal sight on a vertical staff held 40 m away from a…

Q: Create a plot of curvature and refraction corrections for sightlines going from 0 m to 5000 m in…

A: Calculate the correction for the curvature, Cc = -0.07857 D2 D - Distance between the staff and…

Q: How you calculate the difference in elevation between two points by taking the curvature and…

A: Calculation of diffrence in elevation  between two point

Q: y 5 m 4 m 6 m

A: Locate the centroid of the shaded area

Q: How you calculate the difference in elevation between two points by taking the curvature and…

A: plane survey - as the survey area is very small so we not consider  the curvature of the earth.…

Q: Why deflection angles are smaller than 180°?

A: Deflection Angle: When a line is deflected from a straight line, the angle made by the deflected…

Q: Point P is between points Q and R. The distances of Q and R from point P are 1000 m and 2000 m,…

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

A: h1= 2.5m

Q: Q2: To estimate error ratio in a level instrument, the following reading were taken in meters. If…

A: Given Elevation of point A = Reduced Level (R.L.) of A = 24.60 m Distance between A and C = 100 m…

Q: What is the average zenith angle given the following direct and reverse readings?Direct: 87°45′04″,…

A: Given:- The following direct and reverse readings are given Direct readings: 87°45′04″, 87°45′12″,…

Q: he amount of curvature and refraction for a distance of 122 meters is _? Express your OSwer in…

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Q: condition what will be the angle B between R and the horizontal? 520 Ib 930 lb Answers:

A: P=520lb Q=930lb R=1130lb

Q: For a distance of 2km on the curved earth surface, determine the equivalent correction of curvature…

A: Given: Curved distance, d = 2 km

Q: Q4. Observing angles in both faces will eliminate the effects due to the non-perpendicularity of the…

A: The  errors that can be eliminated

Q: Determine the error in distance if the uppermost portion of a 3m long stadia rod is inclined 15cm…

A: Given  Rod intercept = 1.65 m Inclination = 15 cm = 0.15 m To Find  Error in distance

Q: List the categories of variations in magnetic declination?

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

Q: Data from a survey, are shown below. Use either the Rise and Fall method or the Height of Plane of…

A: Data Given: Asked: Use either the Rise and Fall method or the Height of Plane of Collimation…

Q: 42 59 36 45 B 111 "05 29 39 D 51 39 What is the deflection angle at station E?

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Q: . Fill in the table below with its correct forward azimuth and graph i

A: To find the deflection angles we need to know the azimuths (fore bearing) of both previous line and…

Q: Q2: To estimate error ratio in a level instrument, the following reading were taken in meters. If…

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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: Given: Shaded area below Find: Product of inertia with respect to x- and y-axis (Ixy)

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Q: What does Modern biaxial inclinometer probes contains?

A: The inclinometers are used to measure the angles. It is used to measure the tilt in the object. The…

Q: 14. Describe the process of setting up a level. 15. The slope distance from point F to G is 245…

A: Note: As per guidelines and student requirement,I have solved 1st question only.

Q: 42 59 36 45" 111 °05" 29 39 51 °39 C *** What is the deflection angle at station C? E.

A: Deflection angle is the angle which any survey line makes with the prolongation of previous line.…

Q: Point A is in between B and C. The distances of points B and C from point A are 1,500 m and 2,500 m,…

A: Let's consider the reduced level of point A as 100.00 m. Calculate the reduced level of B,  RLB =…

Q: What is the correction (due to earth’s curvature and atmospheric refraction) if the distance between…

A: d=1895.37m d=1.89527km To find combined correction due to refraction and curvature

Q: From the information shown in the following table, find the magnitude of the local attraction line…

A: in the close polygon the part point will be meet with the first point so their is the side FG must…

Q: The photo coordinates at the bottom of a light pole are (80.54, 40.12) mm. The photo coordinates at…

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Q: A) A back sight of 3.0545 m is taken on a point 50 m from the level. A fore sight 2.1604 m is taken…

A: Given Data :- Back sight H1 = 3.0545 m, d1 = 50 m from the level Fore sight H2 = 2.1604 m, d2 = 250…

Q: 2 kN - m B 2 m 2 m

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Q: Respond to the following: a) What is the combined effect of terrestrial curvature and atmospheric…

A: Given data : Distance =1 mile  Distance =1000 metre

Q: KINDLY DRAW THE REPRESENTATION WITH THE THREE HEELS Three hills A, B, and C are at elevations 135m,…

A: Note:- The statement of part (a) and (b) are similar so calculating the effect of curvature and…

Q: Find the ratio (Azimuth point A, OB, OC) (A), from the figure below الزاوية الرأسية = 370 C 3.5 m 25…

A: Note: Azimuth is the whole circle bearing (WCB) which is generally, measured with reference to…

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.