Elementary Surveying: An Introduction To Geomatics (15th Edition)
15th Edition
ISBN: 9780134604657
Author: Charles D. Ghilani
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 7.30P
For Problems 7.30 through 7.32 the observed magnetic bearing of line AB and its true magnetic hearing are given. Compute the amount and direction of local attraction at point A.
Observed Magnetic Bearing True Magnetic Bearing
7.30‘ N32°30 'E N30” 15 'E
7.31 814°30'VV 314915 'VV
7.32 N9°30 "N N8°20 'E
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The bearing of line AB is N 40 E.
a. Solve for the lengths of AB, BC, CD, DE, EA.
b. Solve for the bearings of AB, BC, CD, DE, EA.
The following Bearing taken on a closed compass.
LINE
FORWARD BEARING
BACKWARD BEARING
AB
S37 30'E
N37 30'W
BC
S42°15'W
N43°15'E
CD
N74°00'W
S73°15'E
DE
N13°45'E
S14°15'W
EA
N59 00'E
S59°30'W
A. Compute the error of per station (
B. Compute the true bearing of BC, CD, DE and EA..
From Adjustment Computations 6th Edition.
Chapter 7 Solutions
Elementary Surveying: An Introduction To Geomatics (15th Edition)
Ch. 7 - Define the different reference meridians that can...Ch. 7 - Prob. 7.2PCh. 7 - Why is it important to adopt a standard angle...Ch. 7 - Prob. 7.4PCh. 7 - Prob. 7.5PCh. 7 - In Problems 7.6 through 7.? I9, convert the...Ch. 7 - Prob. 7.7PCh. 7 - Prob. 7.8PCh. 7 - Prob. 7.9PCh. 7 - Prob. 7.10P
Ch. 7 - Prob. 7.11PCh. 7 - Prob. 7.12PCh. 7 - For a bearing DE = NUS 5 53’56 ”WT and angles to...Ch. 7 - ?.14 Similar to Problem ?.13 El, except the...Ch. 7 - Prob. 7.15PCh. 7 - Course AB of a ?ve-sided traverse runs due north....Ch. 7 - Prob. 7.17PCh. 7 - Prob. 7.18PCh. 7 - Prob. 7.19PCh. 7 - Prob. 7.20PCh. 7 - Prob. 7.21PCh. 7 - Prob. 7.22PCh. 7 - Prob. 7.23PCh. 7 - Prob. 7.24PCh. 7 - Prob. 7.25PCh. 7 - Prob. 7.26PCh. 7 - Prob. 7.27PCh. 7 - Prob. 7.28PCh. 7 - Prob. 7.29PCh. 7 - For Problems 7.30 through 7.32 the observed...Ch. 7 - Prob. 7.31PCh. 7 - Prob. 7.32PCh. 7 - Prob. 7.33PCh. 7 - Prob. 7.34PCh. 7 - Prob. 7.35PCh. 7 - Prob. 7.36PCh. 7 - Prob. 7.37PCh. 7 - Prob. 7.38P
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