**CE6404 Important questions SURVEYING 2**

CE6404 Important questions SURVEYING 2 REGULATION 2013 Anna University

**Sample CE6404 Important questions :**

**1. Define Tacheometry:**

Tacheometry is a branch of angular surveying in which the horizontal and

vertical distances (or) points are obtained by optional means as opposed to

the ordinary slower process of measurements by chain (or) tape.

**2. Define Tacheometer:**

It is an ordinary transit theodolite fitted with an extra lens called analytic

lens. The purpose of fitting the analytic lens is to reduce the additive constant

to zero.

**3. Staff intercept:**

The difference of the reading corresponding to the top and bottom stadia wires.

**4. Stadia intercept:**

The difference of the distance between the top and bottom cross hairs. In this method stadia interval is variable. The staff intercept is kept fixed while the stadia interval is variable.

**5. The tangential method:**

a. In this method, the stadia hairs are not for taking readings. The readings being taken against the horizontal cross hair.

**6. What are the systems of tacheometry measurements?**

a. The stadia system The tangential system

b. Measurement by means of special instrument.

**7. What are the types of stadia system?**

a. Fixed hair method, Movable hair method

**8. What is the principle of stadia method?**

a. The method is based on the principle that the ratio of the perpendicular to the base is constant to similar isosceles triangle.

**9. Baseline :**

The Base line is laid down with great accuracy of measurement & alignment as it forms the basis for the computations of triangulation system the length of the base line depends upon the grades of the triangulation.

**10. Laplace Station :**

At certain station, astronomical observations for azimuth & longitude are also made on the station is called Laplace station.

Subject Name | Surveying 2 |

Subject Code | CE6404 |

Regulation | 2013 |

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