Chapter 6: Problem 10

Define the following: (a) Tie stations (b) Base line (c) Check line (d) Offset (e) Traverse

Short Answer

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Short Answer: In surveying and mapping, tie stations are points used to connect main survey stations, base lines are primary reference lines with known lengths, check lines are used to confirm accuracy, offsets are short measurements to locate nearby objects, and traverses are connected series of survey lines used to establish control networks and map boundaries.

Step by step solution

(a) Tie stations)

Tie stations are points selected on the ground to help in connecting the main survey stations. They are used to measure distances and angles to obtain the relative positions of other features on the ground. These are important for closing gaps between main stations, providing reference points for future surveys, and for checking and adjusting the accuracy of the main survey.

(b) Base line)

A base line is the primary reference line in surveying and mapping from which all other measurements are taken. It is usually a straight, leveled line of known length between two fixed points. The base line serves as the foundation for triangulation network, which helps establish control points used to measure the positions of other survey points and features.

(c) Check line)

A check line is a measurement made to confirm the accuracy of the main survey lines. It is typically a line extended from one main station to another, with intermediate measurements taken at various points to establish whether the resulted distances are correct. This helps in verifying the internal consistency and validity of the survey data and identifying any potential errors or discrepancies that need to be corrected.

(d) Offset)

An offset is a short measurement taken at right angles to the main survey line to locate a nearby feature or object. Offsets are useful because they provide an efficient way to map minor details without the need for additional survey stations or detailed triangulation. The location of an object can be determined by its position relative to the main line and the known offset distance.

(e) Traverse)

A traverse is a connected series of survey lines (also known as legs) forming a closed-loop or open-loop configuration. It is formed by measuring successive distances and angles between successive points, known as traverse stations. Traverses are generally used for establishing control networks, mapping boundaries, or determining the shape and size of an area. The accuracy of a traverse can be ensured by balancing angles and using appropriate methods to reduce errors in measurements.

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Define the following: (a) Tie stations (b) Base line (c) Check line (d) Offset (e) Traverse

Short Answer

Step by step solution

(a) Tie stations)

(b) Base line)

(c) Check line)

(d) Offset)

(e) Traverse)

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