19. MAGNETIC DECLINATION. In 1960 a line had a magnetic bearing of N80 23'E. the At that time the magnetic declination 3° 45' west. In a new survey performed in 1987, declination in the same locality changed to 2° 50' east. De- termine the magnetic bearing and true bearing of the line based on the new survey. was 20. MAGNETIC DECLINATION. The magnetic ázimuth from north of a line was 135° 40' in 1968 when the magnetic declination was 5°15' east. If the magnetic declination at the same'. site is now 7°05' 'east, azimuth from south of the line and its determine the true magnetic azimuth today.

Q: The ∑ F proceeding in the couple is?

A: Brief concept- Couple- It is a pair of equal and opposite parallel forces. These two forces do not…

Q: Compute Ix for the region shown. y 2 18 2-5--5- -2 -8 8. Dimensions in inches

A: The area is divided into the standard areas as shown below.

Q: 6 in Gin Gin 9 in 3in

A: Schematic diagram of the given problem:

Q: 4- Which statement is true about the precedence of lines? A. a hidden line has precedence over a…

A:

Q: XXXX W₂ W₁ Which of the following most nearly gives the external degree of indeterminacy? 2 4 O 1

A:

Q: Problem 3: A bracket of negligible weight shown in the figure below is loaded a force of 13.34 kN.…

A:

Q: show the (c)

A:

Q: 4) A precast T beam with the dimensions shown below is to be a used as a bridge over a small…

A: As per Bartleby's guidelines we are supposed to answer only first three questions. Kindly repost…

Q: 3. Is Iust be par PROBLEM 1: The frame shown is supported with hinges at A and C and a pin at B.…

A: Both the hinges will have the two supports, they are :- RAx and RAy at A and RCx and RCy at C. Then…

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.