Survey Engineering

What is Theodolite    Theodolite is the instrument which is mainly used for taking horizontal and vertical angle up to 10" or 20" depending upon the least count of the instrument.  Uses of Theodolite There are many uses of Theodolite, the following are the different purposes for which the theodolite can be used.. 1. Measuring Horizontal Angle 2. Measuring Vertical Angle 3. Measuring Deflection Angle 4. Measuring Magnetic Bearing 5. Measuring Horizontal distance between two points 6. Finding Vertical Height of an object 7. Finding the different of elevation between various points 8. Ranging a Line  How many Types of Theodolite Theodolite may be of two types 1. Transit Theodolite 2. Non - Transit Theodolite Transit Theodolite :- In Transit Theodolite, the telescope can be revolved through a complete revolution about its horizontal axis in a vertical plane  Non - Transit Theodolite :- In Non - Transit Theodolite, the telescope can be revolved through a complete revolution in t

  What is Janch of a Sheet  After attestation of the record of rights of village generally completed , the sheet should be Junch thoroughly. An experienced Amin should be  apoined for this work. The following things should be particularly examined 1. Existence of a field without number is a serious mistake. 2. That the ends of the roads, canals, etc which cut through a village or sheet boundary of a adjoining sheet of the same village or of the adjacent village concerned. 3. That adequate partal has been run and that corrective actions have been taken where necessary 4. That village area has been duly passed in the khasra , the plot index , the khatian totals from the blank page in the khatian volume. 5. The boundary of village and sheet boundary have been compared 6. The Thoka Lines and the sheet thoka lines have been correctly drawn  7. The appropriate alamats have been drawn in pencil also where ever applicable 8. That the sheet heading, the name , etc of adjoining villages and the

                                      SETTING OUT OF CURVE Through this post   you are going to learn  1. What is curve setting ? 2. Type of curve in surveying or classification of curve? 3. Degree of curve . 4. Relation between Radius and degree of curve ? 4.  What are the different method of curve setting? 1. What is curve setting ? Let's assume AB is the direction of a road or railway . Due to some obstacle or some unavoidable circumstance we can not go forward . This is why we have to shift the direction of our road . The angle of change in the direction is known as deflection angle . This angle denoted as  Φ  . A vehicle to run easily along the road or railway trake these two line are connected by an arc this arc is known as a curve of a road or you can say Setting out of curve  . 2. Types of curve in surveying  Generally curve are two type   i. Horizontal Curve  ii. Vertical Curve      When the curve is provided into the horizontal plane is known as Horizontal Curve  . 

    Surveying in Engineering   By S. Islam - 10 jul 2020 Surveying is the most important part in Civil engineering as well as Construction Engineering. Without Surveying we can't start a construction such as road , railways , irrigation, canals , bridge etc .  Content  1. Definition of Surveying in Civil Engineering . 2. What is Levelling . 3. Uses of Surveying . 4. Classification of Surveying . 5. General principle of Surveying . SURVEYING :- Surveying is the art of dermining the relative position of different object on the surface of the earth.By measuring the horizontal distance between them and preparing a map to any suitable scale thus in this discipline the measurement are taken only in the horizontal plane .         Or We can say  Surveying is nothing but data collection . Lvelling :- Levelling is the art of dermining the relative vertical point on the surface of the earth , in the case of levelling the measurement are taken only