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This term is often used in Chain Surveying, The longest of the chain lines formed in doing a survey is generally regarded as the base line.
It is the most important line in doing survey .
The framework of the whole survey built up on the base line as it fixes up the direction of all other lines.It should be measured with great accuracy and precision .For accuracy The base line should be measured twice or thrice.
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When land surveying how is parallax corrected?
Parallax in land surveying is corrected by ensuring that the line of sight through the telescope is parallel to the horizontal cross-hairs or line of collimation. This can be done by adjusting the focusing knob until the image is sharp, and by maintaining a consistent viewing position. By minimizing parallax error, surveyors can obtain accurate measurements and avoid distortions in their readings.
Is a line segment part of a line?
Yes, a line segment is a part of a line. A line extends infinitely in two directions, whereas a line segment is a finite portion of that line with two distinct endpoints.
Can a curved line be a line segment?
No it can't because a line segment is a line that is straight. So it is not a line segment.
How is naming a line segment different from naming a line?
Naming a line segment involves naming its two endpoints, while naming a line involves any two points on the line. A line segment is a portion of a line, so it has a specific length and is finite, whereas a line extends infinitely in both directions.
What is aperpendicular line?
A line that intersects another line at 90 degrees
What is the obstacle of chain surveying?
One obstacle in chain surveying is the need for a clear line of sight between survey points, which can be challenging in areas with dense vegetation, buildings, or rough terrain. Additionally, inaccuracies can arise from errors in measurement and recording when using the chain and ranging rods.
What is one hundredth of a chain?
A chain is a measuring line in land-surveying consisting of of 100 jointed metal rods. Definition from the Shorter Oxford English Dictionary.
What is Line of Collimation in surveying?
The line of collimation in surveying is an imaginary line that extends from the objective lens of a surveying instrument to the crosshairs in the telescope. It helps ensure the instrument is properly aligned and level for accurate measurements. By keeping the line of collimation straight and horizontal, surveyors can minimize errors in their readings.
What are the obstacles to chain surveying?
Those are disturbing the line of measuring is called Obstacles. The actual length of the chain is become short or some time long. this error factor are removed by calculation after measuring the distance between then by as Total Distance = (difference in length of chain /original length of chain)* Measured Distance.
What is chain surveying?
Chain surveying, also known as linear surveying, is a basic method of land surveying used to measure and map small and relatively flat areas. It is a simple and traditional technique that involves the use of chains or tapes to measure distances and basic instruments to measure angles. Chain surveying is often used for small-scale surveys such as creating maps for agricultural fields, small plots, or subdivisions. Here's how chain surveying works: 1. Measurement of Distances: In chain surveying, distances are measured using chains (typically 66 feet or 100 feet) or steel tapes. These chains or tapes are laid out along the linear features of the land being surveyed, such as property boundaries or roads. The total distance is obtained by chaining together multiple segments. 2. Measurement of Angles: Basic angles can be measured using a compass, theodolite, or other simple instruments. These angles are used to determine the direction of the surveyed lines and to calculate the layout of the land. 3. Stations and Offsets: The surveyed area is divided into smaller segments called "stations." At each station, measurements are taken to locate nearby features or boundaries, and perpendicular lines known as "offsets" are measured to mark points of interest. 4. Plotting: The data collected during the survey is used to create a scaled drawing or map of the surveyed area. The positions of boundaries, features, and angles are plotted on the map to create an accurate representation of the land. Advantages of Chain Surveying: **Simplicity:** Chain surveying is straightforward and requires minimal equipment and training. **Accuracy:** In relatively small and flat areas, chain surveying can provide accurate measurements for basic mapping purposes. **Low Cost:** It is a cost-effective method, making it suitable for smaller projects with limited budgets. Limitations of Chain Surveying: **Limited Coverage:** Chain surveying is not suitable for large or complex areas, as it becomes challenging to maintain accuracy over extended distances or rugged terrains. **Human Errors:** The accuracy of measurements in chain surveying can be affected by human errors, such as miscounting chain links or inaccurate readings. **Lack of Precision:** Chain surveying may not provide the level of precision required for detailed engineering projects or high-precision mapping. In modern surveying, more advanced methods such as total stations, GPS, and aerial surveys have largely replaced chain surveying for larger and more complex projects. However, chain surveying remains a valuable technique for smaller-scale surveys and in situations where advanced technology is not readily available or necessary.
What is chaining or taping?
Taping & ChainingThe measurement of distance with the help of chain or tape is known as chaining. The measurement of distance with the help of tape is known as taping. Chaining and taping are the methods of land surveying in which only linear measurements are made. Chain surveying requires the aid of chain, tapes and ranging rods. In chaining, the area to be surveyed is divided into an outline and this framework is comprised of triangles. Metallic tapes are widely used in surveying. A metallic tape is made of varnished strip of waterproof line, and the tape is entwined with small wires of brass and copper.Measuring methods in Taping and ChainingMeasuring chain also known as surveyor chain is mainly used to calculate linear distances. With the help of surveyor chain distances between points are calculated accurately when global satellites to map distances from space were not in their role. To make measurements with chains, keep tallying tags in the chain and then divide it into 10 equal lengths as the first step in chaining. Next step is to shoot a line from the point of origin to the first visible object by detecting it with the aid of circumferentor. Make both chainmen to stand nearby. Pull the chain to its full length by sending the fore chainman towards the object. A marking should be made at the fore chainman's position. And then everyone is advanced towards the object to be detected keeping the chain tight.Chain or Tape Surveying and its objectivesChain or Tape surveying is the simplest form of detail surveying. With the help of tape method the lengths of lines marked on the field can be calculated and from ties in these lines details are collected. Investigating the area by walking around the area to be surveyed, help to locate apt stations and perfect chain lines essential for surveying. Methods are there to detect obstacles. Well formed linked triangles or braced quadrilaterals are created with the help of selected stations.Measuring the distance between points with the help of chain or any other similar tools to record the distance for the purpose of surveying is the basic idea in chain surveying. There are some features that cannot be seen in the line of measurement, in such cases we can select the location of points to be surveyed in a number of ways like using tie lines, offsets, and if using an angle measuring instrument, bearing and distance or juncture. Tie lines and offsets are commonly used in chain type of surveying , in that offset is most famous.
Surveying chaining instruments?
A chaining instrument is one used to measure the straight line distance between two points by comparing the distance to a known lenght. In past times a chain of known link distance was used, typically the chain 66 feet was used roughly 30m with 100 links. Nowadays if a surveying tape or a metal band is used, it is still called chaining.
What is tie line in chain survey?
A tie line is a line which joins subsidiary or tie stations to the main line. The main object of running a tie line is to take the details of nearby objects but it also serves the purpose of a check line.
What are base lines in farm surveying?
Baseline in farm surveying is a fixed reference line used to orientate and measure other survey lines or features within the farm. It is typically the longest and most prominent line in the survey. Baselines are crucial for accurate measurements, establishing property boundaries, and laying out field features like irrigation systems or planting rows.
What is the importance of chain line measurement in ensuring proper alignment and efficiency of bicycle drivetrains?
Chain line measurement is crucial for aligning the chain with the gears on a bicycle, which ensures smooth shifting and efficient power transfer. Proper alignment reduces wear on the drivetrain components and improves overall performance of the bike.
What has the author Janis L Dial written?
Janis L. Dial has written: 'Base line issues at the Sny Magill Mound Group' -- subject(s): Mounds, Excavations (Archaeology), Archaeological surveying, Antiquities
What is the difference between geodetic surveying and plane surveying?
Plain surveying means the survey in which earth surface is considered as to be flat or plain i.e. its curvature is ignored. Geodetic survey is the survey in which curvature of the earth is taken into count and then surveying is done.
