Elementary Surveying: An Introduction to Geomatics (15th Edition)
Elementary Surveying: An Introduction to Geomatics (15th Edition)
15th Edition
ISBN: 9780134645964
Author: GHILANI
Publisher: PEARSON
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Chapter 26, Problem 26.1P
To determine

Principles and methods used to determine volumes in surveying.

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  • The method which is used for computing linear construction projects such as highways, railroads, in this type after the centerline is staked, ground sections called cross sections are taken. This type of principle used in the method is called cross sectional method.
  • Except long linear route constructions, the quantity of earth, gravel, rock or other material excavated or filled can often be used as one of the principle methods in volume surveying which is called as borrow pit method or unit method.
  • Volumes based on contours can be obtained from contour maps by using a planimeter to determine the area enclosed by each contour. This type principle method in volume surveying is called contour area method.

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P.3.3 Oil of sp.gr. 0.9 flows through a vertical pipe (upwards). Two points A and B one above the other 40 cm apart in a pipe are connected by a U-tube carrying mercury. If the difference of pressure between A and B is 0.2 kg/cm², 1- Find the reading of the manometer. 2- If the oil flows through a horizontal pipe, find the reading in manometer for the same difference in pressure between A and B. Ans. 1- R= 0.12913 m, 2- R = 0.1575 m,
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