Elementary Surveying (14th Edition)
Elementary Surveying (14th Edition)
14th Edition
ISBN: 9780133758887
Author: Charles D. Ghilani, Paul R. Wolf
Publisher: PEARSON
bartleby

Concept explainers

Textbook Question
Book Icon
Chapter 4, Problem 4.1P

Define the following leveling terms:

  1. vertical control
  2. elevation, and
  3. vertical datum.

Expert Solution
Check Mark
To determine

i.

Definition of vertical control.

Explanation of Solution

Vertical control, also known as basic control or level control is the series of points with known elevation or the benchmarks established on entire area.

The data sheets for vertical control give the

(1) Set of reference points for the station.

(2) Observed or modeled gravity reading at the station, and

(3) Description of the station, its location and juxtaposing details between the stations.

Expert Solution
Check Mark
To determine

ii.

Definition of elevation.

Explanation of Solution

Elevation of a point is defined as the vertical distance that is measured along a vertical line with reference to some chosen vertical datum or object, it's also known as the height above the datum or orthometric height. If the elevation of any point is 450 ft, it means the point is 450 ft from the reference datum.

Expert Solution
Check Mark
To determine

iii.

Definition of Vertical datum.

Explanation of Solution

Any equipotential or level surface is where the elevations are compared, thereby, calculating every other distance from this surface. This is the surface that is subjectively appointed to an elevation of value zero and is known as reference datum as the points utilizing this datum have heights practically identical to this surface. For example, if the elevation of any point is 450 ft, it means the point is 450 ft distant from the reference datum or vertical datum.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
01:58
Students have asked these similar questions
Define Differential leveling
Provide the plot/graph of the profile (rise and fall method of leveling).
Determine the elevation of BM2 using Three Wire leveling. Tabulate data from the sketch and make the final table.
Knowledge Booster
Background pattern image
Civil Engineering
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.
Recommended textbooks for you
Text book image
Structural Analysis
Civil Engineering
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:Cengage,
Text book image
Structural Analysis (10th Edition)
Civil Engineering
ISBN:9780134610672
Author:Russell C. Hibbeler
Publisher:PEARSON
Text book image
Principles of Foundation Engineering (MindTap Cou...
Civil Engineering
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Cengage Learning
Text book image
Fundamentals of Structural Analysis
Civil Engineering
ISBN:9780073398006
Author:Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:McGraw-Hill Education
Text book image
Sustainable Energy
Civil Engineering
ISBN:9781337551663
Author:DUNLAP, Richard A.
Publisher:Cengage,
Text book image
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning