49. What Is the Inclination of the magnetic fleld In the city of Quito, Ecuador near the equator In South Amerlca? 20.3765° b. 65.90729 a. C. -41.0826° d. -88.4617

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: In 1925, the magnetic bearing of a line OA was N 15*45' W, the magnetic declination at that time is…

A:

Q: SOLVE FOR THE ANGLES: N.20 25 50"W S.20° 25' 50"W. S.52 21' 30"W. S.85 30' 16"E. + S.69 59' 10"W.…

A:

Q: Survey- The observed magnetic bearing of a line OE was found to be 185°. It was later discovered…

A: Observed MB=185o Local attraction=+1.5o Magnetic declination d=3.5o   It is needed to find the true…

Q: Convert from a. b. bearing to azimuth. S 25° W N 35° E c. N 20° W

A:

Q: Convert the following to azimuth:  N64°21’18’’W S45°26’42’’E S79°42’16’’W

A: Convert the following to azimuth:  Part (a). N64°21’18’’W This is in quadrant 4. Azimuth  =   360°…

Q: Calculate the bearing of Azimuth: 0°50' 296°06' 205°54' 135°20' 33°27' 95°39'

A: In bearings  We measure the angles with respect to North or South whichever is nearer  in clockwise…

Q: Convert

A: Given data -  Bearing = N 89° 20' 30'' W

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.