MAGNETIC DECLINATION. A field is in the form of a regular pentagon. It is required to determine the directions of bounding sides which are referenced from an assumed meridian 05° 30’ to the right (easterly) of the true meridian. If the assumed bearing of side AB is N 33° 20’ W, determine the true azimuths (from south) of the following sides of the field: AB, BC, CD, DE, and EA. Assume that the corners are labeled in a counterclockwise direction. Tabulate answers in a convenient format.

Q: The bearing of a line AB in a closed traverse ABCA is 137°30' and its length is 125.8 m. The…

A: Bearing of line AB: 137°30′Length of line AB: 125.8 mX-coordinate of point A: -5 mY-coordinate of…

Q: The magnetic declination at point 0 is 3* 15 E. The magnetic azimuth of line OP is 193* 30. The…

A:

Q: Problem 7: Determine the angle 0 between the y axis of the pole and the wire AB. 3 ft 2 ft 2 ft 2 ft

A: Given :- To find :- Angle between y axis of the pole and wire AB

Q: . The projections of a line in VP and HP are 66 mm and 54 mm long respectively. End A is 12 mm in…

A: Given:- VP=66mm HP=54mm End A=12mm mid point of line=36mm in front of VP and 28mm above HP   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.