Whole Circle Bearing and Reduced Bearing deeply explained in Urdu || best video for beginner's скачать в хорошем качестве

Whole Circle Bearing and Reduced Bearing deeply explained in Urdu || best video for beginner's

In this video, I have explained in full detail about Whole Circle Bearing (WCB) and Reduced Bearing (RB), which are very important topics in Land Surveying and also used in Trigonometry. If you are a student of civil engineering, surveying, or working in the field, this topic is very useful for you. I tried my best to explain everything in very easy and simple English so everyone can understand without confusion. Bearings are used in surveying to show the direction of a line. Whenever we measure land, plots, roads, buildings, or any construction site, we need to know not only the distance but also the direction. That direction is called bearing. Without bearing, a survey is incomplete because you cannot properly fix the position of a point. In this video, I started from the very basic idea of what a bearing is. A bearing is simply the horizontal angle between a reference direction and a survey line. Usually, the reference direction is North. From North, we measure the angle towards the survey line. That angle tells us in which direction the line is going. First, I explained the concept of the Whole Circle Bearing system, also known as Azimuth Bearing. In this system, the bearing of a line is measured clockwise from North. The value of the bearing can be from 0 degrees to 360 degrees. This means we start at North (0°), move clockwise, and go all around the circle until we reach 360°. I explained with simple examples. If a line is exactly towards the East, its whole circle bearing will be 90°. If a line is towards the South, its bearing will be 180°. If a line goes towards the West, its bearing will be 270°. If it comes back to North, it becomes 360° or 0°. This full rotation is why it is called a whole circle system. Then I talked about how this system is very commonly used in practical land surveying because it is easy to use with modern instruments like theodolite, total station, and compass. Most digital instruments directly show bearings in whole circle form. So if you understand this system well, you can easily read and use field data. After that, I moved to the second system which is called the Reduced Bearing system, also known as the Quadrantal Bearing system. This system is a little different. Instead of measuring the angle from North all the way around, we measure the angle from either North or South, whichever is closer, towards East or West. In reduced bearing, the angle is always between 0° and 90°. We also have to write the direction letters with the angle. For example, we write N 30° E, S 45° W, N 60° W, or S 10° E. These letters tell us in which quadrant the line lies. I explained that the full circle is divided into four quadrants: 1. North-East (NE) 2. South-East (SE) 3. South-West (SW) 4. North-West (NW) In each quadrant, the reduced bearing is measured from North or South towards East or West. For example, if a line is in the North-East quadrant, we measure the angle from North towards East, and we write it as N θ E. If it is in the South-West quadrant, we measure from South towards West and write S θ W. In whole circle bearing system, the rule is simple. The difference between fore bearing and back bearing is always 180°. If FB is less than 180°, then BB = FB + 180°. If FB is more than 180°, then BB = FB − 180°. I explained this with diagrams and easy examples in the video. In reduced bearing system, we do not add or subtract 180°. Instead, we just change the directions. North becomes South and East becomes West. For example, if the fore bearing is N 35° E, the back bearing will be S 35° W. If the fore bearing is S 20° W, the back bearing will be N 20° E. For example, if we know the length of a line and its whole circle bearing, we can calculate: Latitude = Length × cos(bearing) Departure = Length × sin(bearing) But the sign (positive or negative) depends on the direction. Northing is positive towards North and negative towards South. Easting is positive towards East and negative towards West. So again, understanding quadrants and bearing systems is very important. In the video, I kept the language very simple and did not use difficult words. My goal is that even a beginner who is new in surveying can understand. I explained slowly and step by step, just like a teacher explains on a board. This video is helpful for: – Civil engineering students – DAE civil students – Survey diploma students – Fresh surveyors working on site – Anyone preparing for interviews or exams related to land surveying If you are working in road projects, building construction, pipeline projects, or land measurement, you will use bearings almost daily. So this topic is not only for exams but also for real field work. Thank you for watching and being part of this learning journey. More easy surveying videos are coming soon. Land Surveying Whole Circle Bearing Reduced Bearing WCB and RB Bearing in Surveying Compass Survey Trigonometry in Surveying Civil Engineering Survey Surveying for Beginners