The magnetic declination at point 0 is 3* 15 E. The magnetic azimuth of line OP is 193* 30. The angle measured clockwise between line OP and another OQ is 173* 10. The true back bearing of line OQ is A. S 3* 25' N B.N 9* 55 'E C. S 9* 55' W D. N 3* 25' E

Q: 8.38 A steel pipe (e = 0.0002 ft) 13,450 ft long is to convey oil (v = 0.00054 ft-/sec) at 13 cfs…

A: Given:- e=0.0002ft L=13450 ft. v=0.00054ft2/sec surface elevation = 705 ft. &390 ft. To find:-…

Q: The forward bearing of a line is N 45° E. Its back azimuth measured from north is equal to Select…

A: This question is related to Surveying Engineering. In this question we calculate back azimuth.

Q: knThe Fh is correct 397.305 The Fv is incorrect i am getting 356.887 Kn the area is the area of…

A: Fx = 397.305 kN We need to calculate correct value of vertical hydrostatic force Fv

Q: Determine the moment of inertia of the shaded area about the x-axis.     5317.36 in4     3715.36…

A:

Q: The magnetic bearing of a line AB was N 59° 30' W in the year 1967, when the declination was 4° 10'…

A: Magnetic bearing  = N 59030' W Declination = 4010' E Present declination = 30 W   What is the whole…

Q: +y B A 20.0° 60.0° +x C The three displacement vectors in the drawing have magnitudes of A-4.75 m. B…

A: Step 1: Step 2: Step 3: Step 4:Step 5:Step 6:Step 7:

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…

Q: The back azimuth of a line whose true bearing is S 42* 15' W is: A.222* 15 B.132* 15 C. 42* 15'…

A:

Q: Determine the angle θ between the y axis of the pole and the wire AB.

A: Position vector of BA and CA:

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.