Survey in Civil Engineering Introduction for TNPSC Field Surveyor and Draftsman Exam

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Chain Surveying
Introduction about Surveying:
Define Surveying - State the object of surveying - State technical terms - State the
classification of Surveying - State the principles of Surveying - State the work of
Surveyor - State the accuracy in chain Survey - State steel band
Measurement of distance by a chain and chaining:
State the methods of determining distance - State chaining and chaining a line -
State unfolding the chain - Describe the reading the chain - State folding the
chain - Calculate the errors in chaining.
Introduction about chain survey instruments:
State the construction and uses of the following chain survey instruments.
Ranging:
State ranging - State the necessity of ranging - State the types of ranging -
Interpret the signals surveyor and the corresponding action by assistance.
Chaining on sloping ground:
Explain the methods of changing on sloping ground - State necessity of
calculating horizontal distances.
Offset and Offsetting:
State the meaning of offset and offsetting - State the classification of offsets, its
limits and its definition - State the methods of taking offsets for various site
conditions.
Obstacles in chain surveying:
Define obstacles - State the three types of obstacles - Calculate the obstructed
distance.
Introduction used for setting out right angles:
List out the instrument used for setting out right angles - State the types of cross
staff and optical square - State the construction of cross staff and optical square -
Explain the principles of optical square - State the uses of cross staff and optical
square.
Introduction about triangulation survey:
Define the triangulation and traverse in survey - State closed and open traversed
survey - State the three types of survey lines in triangulation
Explain about field work.
Calculation of area:
Calculate the areas of an irregular field - Apply geometrical formula for
calculating the area - Describe the construction and use of planimeter.