September 2009
Beginner
348 pages
10h 19m
English
Content preview from Basic Civil Engineering
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Chapter 26
Chain Surveying and Modernization in Land Surveying
26.1 CHAIN SURVEYING
A chain is a device for taking linear measurements in the field. Chain surveying is accomplished by taking linear measurements only.
26.1.1 Basic principle of chain surveying
The principles followed in chain surveying are:
- The whole of the area to be surveyed is divided into a skeleton of framework consisting of a number of well connected networks of ‘well conditioned’ triangles.
- The details are to be located with respect to the sides of the triangles or any other subsidiary lines running between the sides by taking lateral measurements called ‘offsets’.
26.1.2 Skeleton framework for chain surveying
To decide on the best planning of the skeleton framework ...
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