Surveying 2 min read
METHOD OF USING A COMPASS
To take a reading from a compass, the following temporary adjustments are required: (i) Centring: The compass should be fixed to…
THE ARCHIVES
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TYPES OF COMPASS
The types of compass that are used commonly are: (i) prismatic compass; and (ii) surveyor compass. The essential parts of…
Surveying 1 min read
Compass Surveying
Disadvantage of chain surveying is that, in it only distances are measured and hence area is to be covered with…
Surveying 1 min read
TAPE CORRECTIONS
The following five corrections may be found for the measured lengths of tape: (i) Corrections for absolute length (ii) Corrections for pull…
Surveying 2 min read
ERRORS IN CHAINING
Errors in chaining may be classified as: (i) Personal errors (ii) Compensating errors, and (iii) Cumulating errors. Personal Errors Wrong…
Surveying 2 min read
Field Work
As soon as the survey party arrives in the field the following details are entered in the field book: (i)…
Surveying 1 min read
Field Book
All observations and measurements taken during chain surveying are to be recorded in a standard field book. It is a oblong book…
Surveying 1 min read
Selection of Stations
The following points should be considered in selecting station points: (i) It should be visible from at least two or…
Surveying 2 min read
Technical Terms
Various technical terms used in connection with the network of the triangles in surveying are explained below: Station: Station is a…
Surveying 1 min read
CHAIN SURVEYING
Chain survey is suitable in the following cases: (i) Area to be surveyed is comparatively small (ii) Ground is fairly…