Define interpolation of contour and state its methods.

Define interpolation of contour and state its methods. 
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1 Answer

Answer :

The process of spacing the contours proportionately between the ground points is known as “Interpolation of Contours”.

The contours may be interpolated by:

1. Estimation

2. Arithmetical calculations.

3. Graphical method.
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Related questions

State the methods of contour interpolation and explain in brief any one.

Description : State the methods of contour interpolation and explain in brief any one.

Last Answer : Methods of interpolation:- i) By Arithmetic calculations ii) By Estimation iii) By Graphical method i) By Arithmetic Calculation: This is very tedious but accurate method and is used for small areas ... in fig.) may now be pricked through the position of the contour points on line PQ.

Define the term interpolation of contours.

Description : Define the term interpolation of contours. 

Last Answer : Interpolation of contours is the process of locating the required contours proportionately between the plotted reduced levels on sheet. 

Define grade contour. Give the procedure to locate grade contour on contour map with suitable sketch.

Description : Define grade contour. Give the procedure to locate grade contour on contour map with suitable sketch.

Last Answer : Grade Contour - It is the contour established on a specific grade or gradient along the hill side. OR   The line joining the points of equal grade or gradient is termed as grade contour.  ... all the marked points will give us the required grade contour of 1 in 30 accurately. 

Define Grade contour.

Description : Define Grade contour.

Last Answer : Grade contour :- It is the contour established on a specific grade or gradient along the hill side. OR The line joining the points of equal grade or gradient is called as grade contour.

Define 1) Contour 2) Contour Interval

Description : Define 1) Contour 2) Contour Interval

Last Answer : Contour :- It is an imaginary line on the ground joining points of equal elevation or RLs.  Contour Interval :- The vertical distance between any two consecutive contours is known as a contour interval

State any four uses of contour.

Description : State any four uses of contour.

Last Answer : By studying a contour map : 1) The nature of the ground surface or topography of a country whether hilly, undulating or flat can be understood. 2) Possible routes of communication between ... drawn any direction from the contour map. 8) Quantities of earthwork can be determined approximately. 

State any four applications of contour map

Description : State any four applications of contour map

Last Answer : Following are the applications of Contour map. 1. With the help of contour lines on contour map one can know the nature of ground. 2. For determination of most economical site for dams ... of cutting and embankment in given gradient. 6. For determining the indivisibility of two given points

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Description : State the uses of contour map. 

Last Answer : Following are the uses of contour maps. 1.The nature of the ground surface or topography of a country weather hilly, undulating ,or flat can be understood. 2. For determining the ... volume of cutting and embankment in given gradient. 6.For determining intervisibility of given points. 

Apply knowledge of total station to prepare a contour map by describing its procedure.

Description : Apply knowledge of total station to prepare a contour map by describing its procedure.

Last Answer : Procedure of preparing contour map using total station1) Preliminary set up - Fix the total station over a station and level it. Press the power button to switch on the instrument. ... computer in the appropriate format. 8) Using appropriate application software, contour map will be prepared.

What is a contour map? Write any two objects of preparing contour map.

Description : What is a contour map? Write any two objects of preparing contour map.

Last Answer : Contour map : It the map showing nature of topography of any particular field with the help of contour lines indicating reduced levels of ground. Objects of preparing contour map : Contour map ... . 4. To excavate the canal and contour cut trenches along hillside under watershed management works.

In a contour map, if contours are crossing each other, what will be nature of topography? Draw the sketch to support your answer.

Description : In a contour map, if contours are crossing each other, what will be nature of topography? Draw the sketch to support your answer.

Last Answer : If contours are crossing or intersecting each other, then there is overhanging cliff as shown in figure 1 below.

How will you locate grade contour on contour map.

Description : How will you locate grade contour on contour map.

Last Answer : Procedure for establishing grade contour on ground : The grade contour along hill side can be established by following procedure. 1. Suppose a grade contour of 1 in 30 is to be established on ground. ... all the marked points will give us the required grade contour of 1 in 30 accurately. 

What is meant by grade contour? How it will be located in field?

Description : What is meant by grade contour? How it will be located in field? 

Last Answer : It is the contour established on a specific grade or gradient along the hill side. OR The line joining the points of equal grade or gradient is termed as grade contour. Procedure for ... all the marked points will give us the required grade contour of 1 in 30 accurately. 

Describe the procedure to locate grade contour in field

Description : Describe the procedure to locate grade contour in field 

Last Answer : Line joining the point along the same gradient is called contour gradient or grade contour. All the points on a contour have the same elevation. But all the points on a contour gradient do not ... on contour of RL 64. Similarly others points are established to obtain the grade contour on field.

Differentiate between contour interval and horizontal equivalent.

Description : Differentiate between contour interval and horizontal equivalent.

Last Answer : Contour Interval - The vertical distance between two successive contours or contour lines, is known as Contour Interval. Horizontal Equivalent - The horizontal distance between two successive contours or contour lines, is known as Horizontal Equivalent.

Draw neat sketch of contour for the following i)Hill ii) Valley iii)Gentle Slope iv) Ridge Line

Description : Draw neat sketch of contour for the following i)Hill ii) Valley iii)Gentle Slope iv) Ridge Line 

Last Answer : i)Hill ii) Valley iii)Gentle Slope iv) Ridge Line 

Explain the procedure of establishing grade contour on ground.

Description : Explain the procedure of establishing grade contour on ground.

Last Answer : The grade contour along hill side can be established by following procedure. Suppose a grade contour of 1 in 30 is to be established on ground at an interval of 40 m. The points of grade contour ... joining all the marked points will give us the required grade contour of 1 in 30 accurately  

State the methods of locating contours and explain direct method.

Description : State the methods of locating contours and explain direct method.

Last Answer : Methods of locating contours :- 1) Direct method 2) Indirect method i) By cross section ii) By Squares (Block Contouring) iii) Tachometric Method Direct method of contouring:- In ... identical coloured pegs, we get the required contours on ground by this direct method of contouring.

State the two methods of setting out curves.

Description : State the two methods of setting out curves.

Last Answer : Methods of setting out curves :- 1) Method of offsets or ordinates from the long chord 2) By successive bisection of arcs 3) By offsets from tangents 4) By offsets from chords produced 5) Rankine’s method of tangential angles 6) Two Theodolite method

State methods of locating contours and explain any one.

Description : State methods of locating contours and explain any one.

Last Answer : Following are the methods of locating contours 1. Direct Method. 2. Indirect method.  a) By Square / Block Contouring  b) By Cross Section  c) Tacheometric Contouring ... squares are plotted and reduced levels are written at their corners and the contours lines are then interpolated.

Compare radiation and intersection methods of plane table surveying on any two parameters.

Description : Compare radiation and intersection methods of plane table surveying on any two parameters. 

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What are the different methods of contouring? Describe any one method along with sketch . Also write the situation where it is suitable

Description : What are the different methods of contouring? Describe any one method along with sketch . Also write the situation where it is suitable

Last Answer : There are two methods of contouring:- 1. Direct Method 2. Indirect Method - a. By squares  b. By cross section  c. By tacheometric Direct method of contouring - In this ... joining these identical coloured pegs, we get the required contours on ground by this direct method of contouring. 

Define tacheometry. State the principle of tacheometry with sketch.

Description : Define tacheometry. State the principle of tacheometry with sketch.

Last Answer : Tacheometry : It is the branch of angular surveying in which horizontal and vertical distances are determined from instrumental observations only, is known as tacheometry. Principle of tacheometry : ... to corresponding staff intercept remains constant as shown below in figure 3

Define tacheometer. State essential characteristics of tacheometer.

Description : Define tacheometer. State essential characteristics of tacheometer.

Last Answer : Tacheometer A tacheometer is essentially a transit theodolite having a stadia diaphragm. The diaphragm is equipped with two horizontal hairs called stadia hairs in addition to the regular cross hairs. ... The vision through the telescope should give a clear and bright image for a long distance.

Define Latitude and Departure.

Description : Define Latitude and Departure. 

Last Answer : Latitude : The projection of survey line parallel to meridian is called latitude. OR Projection of survey line parallel to N-S direction is called latitude. Departure: The projection of survey ... is called departure. OR Projection of survey line parallel to E-W direction is called departure.

Define Swinging & Transiting

Description : Define Swinging & Transiting

Last Answer : Swinging: It is the process of turning the telescope in horizontal plane about its vertical axis. Transiting: It is the process of turning the telescope through 180° in a vertical plane about its horizontal axis

Define transiting and swinging of theodolite.

Description : Define transiting and swinging of theodolite.

Last Answer : Transiting of theodolite - The vertical movement of telescope about its horizontal axis through 360 degree is known as Transiting of telescope of theodolite. Swinging of theodolite - The lateral or ... of theodolite about its vertical axis through 360 degree is known as Swinging of theodolite.

Define following terms and give any two components of each : 1. GIS 2. GPS

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Give the classification of curve and Define 1.Transition curve 2. Reverse curve

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Define the term departure and latitude

Description : Define the term departure and latitude

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Define 1) Telescope inverted 2) Telescope normal

Description : Define 1) Telescope inverted 2) Telescope normal

Last Answer : Telescope Inverted :- It means bubble down & the face right position is called telescope inverted. Telescope Normal :- It means bubble up & the face left position is called as telescope normal. 

Define transiting.

Description :  Define transiting. 

Last Answer : Transiting is the method of turning the telescope about its horizontal axis in vertical plane through 180ᴼ.

Define zero circle.

Description : Define zero circle. 

Last Answer : For a mechanical or polar planimeter, when the tracing point moves along a circle without rotation of the wheel i.e. when the wheel just slides without any change in reading, the circle is known as the zero circle. 

Define compound curve and reverse curve

Description : Define compound curve and reverse curve

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Define the terms , swinging and transiting.

Description : Define the terms , swinging and transiting.

Last Answer : Swinging: It is the process of turning the telescope in horizontal plane. Transiting: It is the process of turning the telescope through 180° in a vertical plane about its horizontal axis.

Define telescope inverted and telescope normal for transit theodolite.

Description : Define telescope inverted and telescope normal for transit theodolite.

Last Answer : Telescope Inverted: The position of telescope with the face right is known as “Telescope Inverted”. Telescope Normal: The position of telescope with the face left is known as “Telescope Normal”.

Define G.I.S. Enlist the key components of G.I.S.

Description : Define G.I.S. Enlist the key components of G.I.S. 

Last Answer : Definition: A Geographic Information System (GIS) is a computer based tool that allows you to create, manipulate, analyze, store and display information based on its location. Components of GIS: ... plan and business rules, which are the models and operating practices unique to each organization. 

Define zero circle. How it is found out?

Description : Define zero circle. How it is found out?

Last Answer : Zero circle or circle of correction is defined as circle round the circumference of which if tracing point is moved, wheel will simply slide(without rotation) on the paper without any change in reading. There ... of zero circle = M C Where M= multiplying constant. C= additive constant.  

Define degree of curve.

Description : Define degree of curve.

Last Answer : The angle subtended at the centre of the circle by a chord of standard length of 30m is known as degree of curve. 

Define swing of telescope

Description : Define swing of telescope

Last Answer : It the process of turning the telescope in horizontal plane about vertical axis.

Define the terms- latitude and departure.

Description : Define the terms- latitude and departure. 

Last Answer :  Latitude – The projective distance of survey line parallel to meridian (i.e. N-S direction) is known as Latitude of a line. Departure - The projective distance of survey line perpendicular to meridian (i.e. N-S direction) is known as Departure of a line.

Define horizontal equivalent .

Description : Define horizontal equivalent .

Last Answer : The horizontal distance between any two successive contours is called horizontal equivalent.

State the function of Anallatic lens..

Description : State the function of Anallatic lens.. 

Last Answer : The function of anallatic lens is to make additive constant zero i.e.(f+d)=0 It simplifies the calculation. 

State two advantages of plane table surveying

Description : State two advantages of plane table surveying

Last Answer : 1.it is most rapid method of surveying. 2. it is suitable for magnetic areas. 3.The map can be prepared easily ,and does not require greater skill. 4.Irregular objects can be represented ... is less costly. 7 The check lines detects the errors of measurement and plotting on field itself. 

State any four characteristics of contours with sketches.

Description : State any four characteristics of contours with sketches.

Last Answer : Characteristics of contours - The characteristics of contours are described in following statements with the help of necessary sketches. 1. All the points on contour line represent same reduced level or equal ... 8. The summit of four ridge lines represents saddle as shown in sketch 8.

What is meant by zero circle? State the advantages of digital planimeter over polar planimeter.

Description : What is meant by zero circle? State the advantages of digital planimeter over polar planimeter.

Last Answer : Zero circle:- When the tracing point is moved along a circle without rotation of the wheel i.e. when the wheel slides without any change in reading ,the circle is known as the zero circle or ... are required for area. 3) It gives more accurate reading 4) Less time required for measurement

State the component parts of micro optic theodolite . How it is superior to a transit theodolite. Also write the situation where it is suitable.

Description : State the component parts of micro optic theodolite . How it is superior to a transit theodolite. Also write the situation where it is suitable.

Last Answer : Component parts of micro optic theodolite 1) Telescope 2) Magnification with standard eyepiece. 3) Level tube 4) Foot screws. 5) Tribatch & Trivet 6) Optical micrometer 7) Changing nob 8) ... is most suitable 3) This instrument is durable for harsh environments. 4) It is simple in use.

State any four uses of digital theodolite.

Description : State any four uses of digital theodolite.

Last Answer : The uses of digital theodolite are as follows. 1. To measure horizontal angle vey precisely up to one second. 2. To measure vertical angle accurately up to one second. 3. To set ... reduced levels of ridge and valley lines accurately. 5. To determine horizontal distance more precisely

State any two situations under which tacheometry is preferred.

Description : State any two situations under which tacheometry is preferred. 

Last Answer : Tacheometry is preferred in following situations. 1. When horizontal distances can't be measured by chaining on highly uneven ground. 2. When vertical distances or reduced levels can't be measured ... is necessary to fill the details in topographic map and contour map with low degree of precision.

State any four uses of transit theodolite.

Description : State any four uses of transit theodolite.

Last Answer : Transit theodolite is useful for the following. 1. To measure the horizontal and vertical angles between survey stations. 2. To measure deflection angles between survey lines. 3. To measure horizontal ... tubular compass to it. 6. To prolong or extend the survey line up to required destination.