Calculate the magnetic declination in 1870 based on the following data from an old survey record. * 1870 Magnetic Bearing Present Magnetic Bearing Present Magnetic Declination S40°40'W S54°35'W 8°30'E

Calculate the magnetic declination in 1870 based on the following data from an old survey record. * 1870 Magnetic Bearing Present Magnetic Bearing Present Magnetic Declination S40°40'W S54°35'W 8°30'E

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: Magnetic Magnetic Magnetic Declination Declination Bearing in 1905 in 1905 today S 46° 12 " W 5°52'…

Q: The length and bearing of a closed traverse taken with the help of theodolite are as follows. Length…

A: Given data in question Closed traverse Length Bearings in reduced form To find out Closing error…

Q: In an old survey performed in 1965, a line AB had a magnetic bearing of S 75°10' W when the magnetic…

Q: Two surveying tapes were used in measuring the frontage of an open field. the resulting measurements…

Q: Determine the most probable length of the measurements having different values based on the number…

Q: 2. An archaeologist took some measurements on the unique mountain he had found. He sets two points X…

A: Given: Distance between X and Y =928 m Angle of elevation of peak of mountain from point X=47 ° 10'…

Q: The magnetic bearing of line CD was recorded as N 11°45’ E in 1887, at which time the declination…

A: Given data in question Magnetic bearing in 1887 Declination in 1887 Declination in 1985 To find out…

Q: 1. The surveying team at UTM can make taping measurements with an error of ±0.03 ft per 100-ft tape…

A: Note:- Hi! Thank you for the question As per the honor code, We’ll answer the first question since…

Q: 3. In 1995, a line had a magnetic bearing of N80°23'E. At that time the magnetic declination was…

Q: (Triangulation): Two stations B and C were observed from a theodolite set up at station A and…

A: Given data:AB=500m, bearing=233°08'AC=400m, bearing=270°00'It is asked to find the length of line…

Q: THE MAGNETIC BEARING OF A LINE AB IN 1994 WAS MEASURED BY A COMPASS INSTRUMENT AND WAS RECORDED AS N…

A: The magnetic bearing is calculated for the magnetic north that which actually not true north then…

Q: From the information given, determine the astronomic bearing and its magnetic bearing today

A: To determine astronomic bearing and magnetic bearing. The astronomic bearing or true bearing…

Q: Given the data below of record from a theodolite stadia reading, determine the distance between the…

Q: Rick and Morty, using the portal gun, travels back in time around 1890. Using a magnetic compass,…

Q: . In an old survey made when the declination was 2010'W, the magnetic bearing of a given line was…

Q: n the true length of the line if the co-efficient of expansion is 65 × 10-7 per 1°F.

A: Given: 20 m long tape of standard length at 84 o F. Used at mean temperature of 65 o F Distance…

Q: The bearing of line in 1975 was found to be N 19°09' W. In 2003, it was found out that at the said…

A: Option (c) is correct. Using the fact that true bearing doesn't change over time. The MB can be…

Q: How to set up theodolite for surveying? Write down the steps

A: The theodolite can be defined as it is a precision instrument that is used to measure angles in the…

Q: Given the data of an open traverse below, convert it into figure and determine its corresponding…

Q: The readings given below were made with a tacheometric theodolite having a multiplying constant of…

Q: data from an old survey record. Present Magnetic 1870 Magnetic Bearing Present Magnetic Bearing…

A: To find magnetic declination in 1870 The problem is as given below

Q: a. Most probable value b. Standard deviation c. Standard error of the mean d. Probable error of the…

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: . A Geodetic Engineer used a 100 m. tape in measuring a line and recorded to be 1000.05 m long. The…

Q: 12. Complete the benchmark-leveling field notes shown in Figure B by computing and recording the HI…

A: Objective: To completer the given leveling notes and perform the arithmetic checks. Given: Sta.…

Q: (Triangulation): Two stations B and C were observed from a theodolite set up at station A and…

Q: b. The surveyor's first reading was to TBM 41 with reading 5.76, she then took the following…

A: First Reading at TBM 41 =5.76 Last Reading at TBM 41 =5.77 Assume the elevation of TBM 41 =100

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 S75°10'W when the magnetic…

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

Q: 5. For several measurements of a required distance, the most probable value is 546.75 m. If +/-0.15…

Q: Please compute for the magnetic bearing in the year 2021. If the magnetic declination in 1996 was…

Q: solve the following values indicated in the table then draw the sketch of the survey, with complete…

A: Given: Required to find: The adjusted bearing after applying correction.

Q: An angle APB is measured at different times using various instruments and procedures. The results,…

A: Most probable value: The value of an angle at a triangulation station that is found from the value…

Q: In 2001, the magnetic declination was 1°25' E and the measured magnetic bearing of line MN was N…

A: Given data- Year 2001- Magnetic bearing (MB) = N 23'20o W Magnetic declination (MD) = 1o25' E…

Q: - The coordinates of point P (300,300) and B (500.550) m, the following observations were taken on…

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

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

Q: A student surveys line AB in a level ground field by taping. While taping, he used pebbles as…

A: Given that :- Length of tape = 25 m Pebbles(No.) Partial Distance Trial 1 25 6.345 m Trial…

Q: 27. Record the level rod readings to the nearest two decimal places. 1. 2. 3. 2. 3.

Q: Note: Assume any suitable values for missing data. WCB of Line AB = X*5 (X is one ) Q. The following…

A: To Determine :- Complete the gales traverse table as follows: Apply all necessary corrections for…

Q: A 30 m tape was tested before a survey and found to have a length of 29.93 m. If the length of a…

A: Given- correct chain length=30 mwrong chain length=29.93 mwrong measured length=270 mcorrect…

Q: Determine the weighted mean for the following angles:(a) 222°12′36″, wt 2; 222°12′42″, wt 1;…

A: (a) Calculate the weighted mean.

Q: - tapes 50 m and 30 m v and found 723.41 m and .42 m respectively. Com gth of 50 m tape, if you -…

A: Given data - Length of tape1 = 50 m Length of tape2 =30 m Measure Length with tape1of AB = 723.41m…

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

Calculate the magnetic declination in 1870 based on the following data from an
old survey record. *
1870 Magnetic Bearing Present Magnetic Bearing Present Magnetic Declination
S40°40'W
S54°35'W
8°30'E
Your answer
9 This is a required question

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

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
situation 4] In the two-peg test method performed by a group of surveying students, the following observations were taken: Rod reading Instrument Instrument set up near set up near K 1.851 On A On B 1.318 1.741 1.048 Point J is equidistant from A and B, and K is 12.14 m from A and 74.25 m from B. The difference in elevation between A and B. The correct rod reading on B with the instrument set up at K. The correct rod reading on A with the instrument set up at K. iii.
Please compute for the magnetic bearing in the year 2021. If the magnetic declination in 1996 was 3º54' E and the measured magnetic bearing of line BC = N 42º05' W The secular variation per year is 7' E.
In 1994 the magnetic bearing line AB measured by a compass instruments was N 58°45’ W. The declination of the needle at that time was 1°30’ E. a) What is the true bearing of the line?b) If the new declination at present was 20°20’ W, determine the new magnetic bearing of the same time.
In a two peg test using a dumpy level, the following observations were taken: Instrument at C Instrument at D Rod reading on A 1.103 .568 Rod reading on B .991 .289 Point C is equidistant from A and B and D is 12m from A and 72 m from B. What is the true difference in elevation between A and B (in meters)? (answer in 3 decimal places) With the level in the same position at D to what rod reading on B should the line of sight be adjusted (in meters)? (answer in 4 decimal places) What is the corresponding rod reading on A for a horizontal line of sight with instrument still at D (in meters)? (answer in 4 decimal places)
Show your solutions.
Imagine that you are the engineer responsible for the tacheometric survey of an area where a public park will be built. While surveying, you found a cliff that needs to be detailed mapped. Using a tacheometer, the following readings were obtained:Data:Zenith angle (z): 45°Reading on stadimetric wires:High wire: 1.485 mMedium yarn: 1,000 mLow wire:0.948 mInstrument height: 1.50mHeight of observed point: 0 m Calculate the horizontal distance from the observed point and the height of the cliff in relation to the instrument position. ∆d = 100. (A-B). cos²z∆h = Dx tan(z)+ (hm+hi-hv)- Give preference to make the resolution editable, handwriting hinders understanding.
N Rod ++ 50 1+50 1+75 2.6 Complete the set of differential leveling notes in Table 2-5, and perform the arithmetic 2.5 Prepare a set of profile leveling notes for the survey in Figure 2-34. In addition to comput- ing all elevations, show the arithmetic check and the resulting error in closure. check. 5.11 4.66 3.98 1.20 1.80 TP 2 4.42 4.30 2.01 Known Elevation is 402.78 4.72 TP 1 BM 61 Elevation = %3D 396.74 FIGURE 2-34 5-35 ()
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.
In the two-peg test method of a dumpy level, the following observations were taken. What is the difference in elevation between A and B in meters? * Instrument near A 1.455 2.341 Instrument near B 0.978 Reading at A Reading at B 1.957 0.933 0.887 0.949 O 0.871
3. Complete the table below: True Bearing Magnetic Azimuth (N) Declination Magnetic Bearing True Azimuth (N) 2°23'W 288°47 N38°44'W 322°00' S65°18'W 245°33' 3°04'E S12°45'E
FS 2.875 m 4.252 m 5.478 m 6.142 m BS ТР 1 ТР 2 4.325 m 9.542 m 9.631 m 8.133 m BM 1 Elev. = 56.287 m ТР 3 Not to scale BM 2 Given the traverse illustration above, fill up and complete the table below. Make sure to show your solution in solving for HI, Elevation, Correction to be applied, and Corrected Elevation. BS HI FS Elevation Corrected Station (m) (m) (m) (m) Elevation (m) BM1 TP1 BM2 TP3 TP4 BM1 7.258 m 2.841 m