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Fly levelling

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FLY Levelling and Total Station. Subject: Mine surveying Dept: Mining Engineering BUITEMS Levelling..? ➢ It is very approximate form of Levelling in which distance are not measured and sight are taken as large as possible. ➢ The main purpose of Fly Levelling is to transfer the Bench mark. ➢ In this method only back sight and fore sight are taken. ➢ There is no need of intermediate sight. For Better Accuracy ➢ Fly Levelling is perform when the work sight are far away from each point. ➢ The surveyor start by taking Back sight and Bench mark and proceed toward working sight. Diagram What is Total Station? A Total Station or TST(Total Station Theodolite) as an  Electronic/Optical device used for surveying and building construction.  Robotic total stations allow the operator to control the instrument from a distance via remote control.  This eliminates the need for an assistant staff member Total Station is a combination of:  EDM(Electronic Distance Measurement.  Theodolite.  Auto leveler.  Microprocessor with specific memory.  Battery Diagram It Measure ➢ Angle Measurement. • Most Total Station are measured angles with Electro Optical scanning. ➢ Distance Measurement. • Measure of distance is accomplished with a modulated infrared carrier signal to determine distance. ➢ Coordinate Measurement. • Total station are also used to find coordinate. By using trigonometric ratio we can calculate Le ...
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