Trigonometric Levelling & Tacheometry

Trigonometric Levelling

Trigonometric Levelling, Determination of elevation of object when its base is accessible, Determination of elevation of object when its base is not accessible, Determination of elevation of the object when the two instruments are not in the same vertical plane.

Tacheometry

Tacheometry, Instrument Used In Tacheometry – Tacheometer, Stadia Rod. Different Systems of Tacheometric Measurement- Stadia System (Fixed hair system, Movable hair system), Tangential System, Subtense Bar System, Theory of Tacheometer, Distance and Elevation Through Tacheometer- When a Staff Is Vertical, & When a Staff Is Perpendicular to Line of Sight.

Topics

Surveying

Measurement of Area and Volume (Mid Ordinate Rule, Average Offset Rule, Trapezoidal Rule, Simpson’s Rule)

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28 September 2021

In measurement of area and volume, we details discuss about mid ordinate rule, average offset rule, trapezoidal rule, simpson's rule for measurement of area & trapezoidal rule / end area method, prismoidal / simpson’s rule for measurement of volume.

Surveying

Setting Out Of Circular Curve (Linear Method -Offsets From Long Chord, Angular Method, Etc)

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12 October 2021

In setting out of circular curve we details discuss offsets from long chord, offset from tangent, offset from chord produced in linear method & tape & theodolite/rankine method / tangential / deflection angles, two theodolite method, tachometer method in angular method.