Problem 2 In a compass survey made 50 years ago the observed magnetic bearing of a reference line XY was N 60°20' W when the magnetic declination was 9°10' West. Lately in 2018, a new survey was made and the magnetic declination in the same survey site changed to 8°12' East. Determine the following descriptions of line XY: Its true bearing The true azimuth from North and South C. Its new magnetic bearing d. The magnetic azimuth from North and South in 2018 a. b.

Problem 2 In a compass survey made 50 years ago the observed magnetic bearing of a reference line XY was N 60°20' W when the magnetic declination was 9°10' West. Lately in 2018, a new survey was made and the magnetic declination in the same survey site changed to 8°12' East. Determine the following descriptions of line XY: Its true bearing The true azimuth from North and South C. Its new magnetic bearing d. The magnetic azimuth from North and South in 2018 a. b.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: The magnetic declination in a locality is 5°45'W. Determine the true bearing and true azimuths…

A: IF the magnetic declination at a place at the time of observation is known, the true bearing of a…

Q: 3. In a compass survey made fifty(50) years ago, the observed magnetic bearing of a reference line…

A: As per the company guidelines answering first three sub parts (a) true bearing True bearing =…

Q: 2. In 1960 a line XY had a magnetic bearing of N 80°23' E. At that time the magnetic declination was…

A: Ans-2) Magnetic Bearing=N80°23'EDeclination=2°50' east

Q: The true and magnetic bearing of a line are 78° 45' and 75° 30' respectively. What is the magnetic…

Q: 9. The magnetic bearing of line AB was observed to be N 20° W, when the declination was 3° W. Point…

A: To find Magnetic Azimuth of Line BC.

Q: Problem 2 In a compass survey made 50 years ago the observed magnetic bearing of a reference line XY…

A: We will draw diagram for each case.

Q: In a compass survey made 50 years ago the observed magnetic bearing of a reference line XY was N…

A: "Since your posted a question with multiples subparts we will solve first three for you. to get the…

Q: What are the problems that arise in magnetic declination?

A: Magnetic declination is defined as the horizontal angle between the magnetic meridian and true…

Q: Magnetic Declination: 1. In a compass survey made twenty years ago the observed magnetic bearing of…

A: As per bartleby guidelines, only 1st question among multiple questions need to be solved. For rest…

Q: line XY was S50°18’E when the magnetic declination was 8°15’ East. Lately in 1986, a new survey was…

Q: A compass survey made 35 years ago observed that the magnetic bearing of a reference line AB was S…

Q: Magnetic Declination: 1. In a compass survey made twenty years ago the observed magnetic bearing of…

A: Given data in question Magnetic bearing 42°21` Magnetic Declination 6°25` and 10°35` To find out…

Q: In an old survey performed in 1965, a line AB had a magnetic bearing of S75deg10’W when the magnetic…

A: Given Data:Magnetic Bearing = S75°10'WMagnetic declination = 4°30'Change in Magnetic declination =…

Q: In an old survey performed in 1965, a line AB had a magnetic bearing of S75o10’W when the magnetic…

Q: In an old survey performed in 1965, a line AB had a magnetic bearing of S75°10'W when the magnetic…

A: The magnetic bearing of AB in 1987 should be??

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: 5) If the horizontal direction from point S to point M is measured to be 12°45'10" and the direction…

A: 5) Horizontal angle NSM = 179o20'40" - 12o45'10" = 166o35'30"…

Q: 2. Following are observed magnetic bearings of a compass traverse: CD S 66°44' E FG Due south. AB N…

A: Given:- magnetic declination= 3°25' west Magnetic bearing of different line is given

Q: Magnetic Declination: 1. In a compass survey made twenty years ago the observed magnetic bearing of…

A: Given :compass surveying Magnetic bearing( MB) =N42•21'E Magnetic declination= 6•25'E After 20year…

Q: from north and south of the following lines whose magnetic bearings are given. a.) AB, N…

Q: In 1994 the magnetic bearing line AB measured by a compass instruments was N 58°45’ W. The…

Q: Surveying If the observed fore bearing of line AB is 202° 20', then the back bearing is:

A: Given data- Fore bearing FB=202o20'To Find-The back bearing BB

Q: The magnetic bearing of a line was recorded as N 34 00 E on an old survey plan dated 1947. In 1970,…

A: Given thatMagnetic Bearing of line=N 34°E on 1947 WCB=34°1970 declination=9°W1970 , annual…

Q: Magnetic Declination: 1. In a compass survey made twenty years ago the observed magnetic bearing of…

Q: Problem 6.3 In 1996, the observed compass bearing of a line was N 64 ̊18’ E. During observation, the…

Q: The Magnetic Bearing (MB) of a line was determined to be S 18°-47¹-42" W. The declination at the…

A: Given, Magnetic bearing of a line = S18°47'42"W Declination = δ= 05°49'48" W

Q: If the azimuth from South of a line is 312', what is its bearing? Select the correct response: S 48°…

Q: a. The observed compass bearing of a line in 1981 was S. 37°30' E. and the magnetic declination of…

Q: The magnetic azimuth reckoned from the north of a line is 205° 40'. If the magnetic declination is…

Q: The magnetic bearing of line AB was observed to be S 30° E, when the declination was 2° west. Point…

A: Declination at station A = 2° west The magnetic bearing of line AB = S 30° E Deflection at station B…

Concept explainers

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.

Question

Problem 2
In a compass survey made 50 years ago the observed magnetic bearing of a reference line XY was N 60°20' W when the
magnetic declination was 9°10' West. Lately in 2018, a new survey was made and the magnetic declination in the same survey site
changed to 8°12' East. Determine the following descriptions of line XY:
Its true bearing
The true azimuth from North and South
a.
b.
C.
Its new magnetic bearing
d. The magnetic azimuth from North and South in 2018

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

Magnetic Declination: 1. In a compass survey made twenty years ago the observed magnetic bearing of a reference line XY was N 42'21' E when the magnetic declination was 6'25' East. Lately in 2018, a new survey was made and the declination in the same survey site changed to 10°35' West. Determine the following descriptions of line XY: a.) Its true bearing twenty years ago; b.) The true azimuth from North and South; c.) Its new magnetic bearing; and d.) The magnetic azimuth from North and South in 2018. 80°17 E 2. From the closed compass traverse shown, if the forward bearing of line AB is N 78'9' E, compute the: LEC, the bearing of the LEC and the RP. COURSE DIST. BEARING A-B B-C C-D D-E E-A 3140 111295 117.50 m 90*20 LATITUDE DEPARTURE D 111.30m 94 10 C
Magnetic Declination: 1. In a compass survey made twenty years ago the observed magnetic bearing of a reference line XY was N 42'21' E when the magnetic declination was 6'25' East. Lately in 2018, a new survey was made and the declination in the same survey site changed to 10°35' West. Determine the following descriptions of line XY: a.) Its true bearing twenty years ago; b.) The true azimuth from North and South; c.) Its new magnetic bearing; and d.) The magnetic azimuth from North and South in 2018.
Survey- The observed magnetic bearing of a line OE was found to be 185°. It was later discovered that station O had a local attraction of + 1.5°. The true bearing of the line OE, considering a magnetic declination of 3.5° E shall be
The magnetic bearing of a line was recorded as N 34°00 E on an old survey plan dated 1947. In 1970, the isogonic chart shows a declination of 9° W for the area with an annual change of 4' eastward. Determine the azimuth of the line in 2020. Your answer An airplane is 421km from radar station R at a bearing of N 23 25' W. A second radar station Q is 210km from R at a bearing of S 57 25' E. Find the distance of the airplane from station Q.
A compass survey made 35 years ago observed that the magnetic bearing of a reference line AB was S 50°18' E when the magnetic declination was 8°15' E. Lately in 2012 a new survey was made and the declination in the same survey site changed to 12°10' W. What is the magnetic azimuth from the south of line AB in 2012?
In an old survey performed in 1965, a line AB had a magnetic bearing of S75deg10’W when the magnetic declination was 4deg30’ west. In a new survey performed in 1987, the declination in the same locality changed to 2deg50’ east. Determine the true bearing of AB in 1965, the magnetic bearing of AB in 1987, the true azimuth (from the north) of AB in 1987, and the back azimuth (from the south) of AB in 1965.
3. In a compass survey made fifty(50) years ago, the observed magnetic bearing of a reference line XY was S 50° 18' E when the magnetic declination was 8° 15' east. In 1986, a new survey was made and the declination of the same survey site changed to 12° 10' west. Determine the following descriptions of line XY: (a) its true bearing (b) true azimuth from south (c) its magnetic bearing in 1986 (d) magnetic azimuth from south in 1986
Complete solution Topic: : MAGNETIC DECLINATION
In an old survey performed in 1965, a line AB had a magnetic bearing ofS75o10’W when the magnetic declination was 4o30’ west. In a new surveyperformed in 1987, the declination in the same locality changed to 2o50’ east.Determine the true bearing of AB in 1965, the magnetic bearing of AB in 1987, the true azimuth (from the north) of AB in 1987, and the back azimuth (from the south) of AB in 1965.
Problem 6.3In 1996, the observed compass bearing of a line was N 64 ̊18’ E. During observation,the magnetic declination of the place was 11 ̊8’ W and a local attraction of 2 ̊ 32” Eexisted. Find the true bearing of the property line and its equivalent azimuth fromsouth.ANSWER KEY: θb= True N 55 ̊ 42’ Eθa= True S 235 ̊ 42’
Please show legible illustration and solution
The bearing of line in 1975 was found to be N 19°09' W. In 2003, it was found out that at the said survey location the magnetic declination moves 1°20' West every 4 years since. If we are to survey the same line, what would be it's magnetic bearing in 2003?