Describe the temporary adjustment of digital level.

1 Answer

Answer :

Temporary adjustment of digital level:-

1) Setup stability:- The digital level should be fixed by rotating its screw head on top of tripod stand. Set tripod legs wide apart to increase the stability of the setup.

2) Centering:- Setup the tripod roughly above the station point .The tripod head plate should be approximately horizontal. Hook the plumb line into the retaining screw and set up the tripod roughly centered above the ground mark.

3) Levelling and fine centering:- Align the control unit parallel the imaginary connecting line between two tribrach screws. Level the instrument in the telescope axis by means of the tribrach screws.

4) Shift the tribrach on the tripod head plate until the plumb line is hanging centrally above the ground mark. Repeat the leveling several times if required.

5) Focus the telescope properly to get clear image of cross hairs .

Related questions

Description : Describe the temporary adjustment of theodolite

Last Answer : Temporary adjustment of theodolite:- The following operations should be done as temporary adjustments before taking readings on any theodolite. 1. Setting of theodolite on tripod stand - The theodolite ... .e. cross hairs and object) simultaneously focussing of telescope is said to be completed. 

Description : Explain the temporary adjustment of theodolite. 

Last Answer : Temporary Adjustments: The temporary adjustments have to be carried out at every setup of the instrument before taking observations with the theodolite A)Setting up: 1) Place the instrument ... . The parallax can be removed by the sharp focusing until the image appears sharp and clear. 

Description : Explain temporary adjustment required for theodolite. 

Last Answer : The temporary adjustments have to be carried out at every set-up of instrument before taking observations with the theodolite. 1) Setting up the theodolite: Setting up of the theodolite includes: a) ... moves up and down. This is affect of parallax. This can be removed with sharp focusing. 

Description : Explain the temporary adjustment of transit theodolite

Last Answer : Temporary adjustment of transit theodolite consists of following steps. 1. Setting up theodolite over a station 2. Levelling up 3. Focusing of eyepiece. 4. Focusing of object glass. ... , direct the telescope towards object and turn the focusing screw until the appears clear and sharp. 

Description : What is meant by permanent adjustment of a theodolite.Enlist any two such adjustment.

Last Answer : A theodolite consist of several fundamental lines .In order reading to be accurate, certain desired relationship must exist between the fundamental lines of the instruments. But due to improper handling or ... axix 4 Adjustment of level tube on the telescope 5 Adjustment of vertical index frame.

Description : Describe the use of digital theodolite for measurement of horizontal and vertical angle.

Last Answer : I) Procedure for measurement of horizontal angle with digital theodolite: 1) Taking out digital theodolite for box and fix it on tripod over required station. 2) Approximate leveling by leg adjustment and ... and take the reading at B. 9) Difference of two angle gives required vertical angle AOB

Description : Enlist any four component parts of digital level. State the functions of each. 

Last Answer : Following are the component parts of Digital Level: 1. Display screen: To show the program going on. It has high resolution. 2.Key Pad- For operating the instrument. 3.Telescope- For ... - Internal focusing is provided, so to observe the object clearly, it is focused with focusing screw. 

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

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

Description : State four component parts of digital theodolite and state their purpose.

Last Answer : Component parts of digital theodolite and their purpose: 1. Control panel: to perform operations by giving commands to measure horizontal and vertical angles in left or right direction, to switch on ... fast and steady leveling. 7. Foot screws: for leveling of instrument by usual method.

Description : State importance of digital planimeter over polar planimeter.

Last Answer : Following are the importance of digital planimeter over polar planimeter. 1. No calculations are required for area calculations. 2. Less time required for measurement of area. 3. Gives more accurate result.

Description : State any four application of digital theodolite. 

Last Answer : Application of digital theodolite:- 1. To measure horizontal angle very precisely up to one second. 2. To measure vertical angle accurately up to one second. 3. To set out control ... reduced levels of ridge and valley lines accurately. 5. To determine horizontal distance more precisely. 

Description : Explain the procedure for measurement of vertical angle using digital theodolite

Last Answer : Digital Theodolite for measurement of vertical angle. 1)Taking out digital theodolite for box and fix it on tripod over required station. 2) Accurate centering and aapproximate leveling by leg ... required vertical angle from zenith point or horizantal plane as per setting of the instrument. 

Description : State the advantages of digital planimeter.. 

Last Answer : 1.It gives more accurate reading. 2.No calculation are required for area. 3. Less time required for measurement of area. 4 Area can be measured in any desired unit.

Description : Describe stepwise procedure to prepare the layout of a small building using total station.

Last Answer : Layout of small building by using total station: 1. On the plan supplied by an architect, number the column serially from left to right and top to bottom starting from top left ... of setting out by comparing the diagonal distance between the extreme column centres to their calculated values.

Description : Describe the procedure to determine co-ordinates of a station using GPS. 

Last Answer : The following are some general GPS field survey procedures that should be performed at each station, observation, and/or session on a GPS survey. A. Receiver setup : GPS receiver shall be set up ... is to identify any problem that may exist which can be corrected before returning from the field.  

Description : Describe any one method of orientation of plane table surveying

Last Answer : Orientation by back sighting method: This method is accurate and is always preferred. Procedure: 1.Suppose A and B are two stations.The plane table is set up over A. The table is leveled by spirit level ... are perfect and needle is exactly at 0-0 , the orientation is said to be perfect.

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. 

Description : Describe the method of locating contours by square method. 

Last Answer : 1) The method of square is indirect method of locating contours. 2) The method of squares is used where the area to be surveyed is small and not much undulating. 3) The area to be surveyed ... points are written on the respective corners. 6) The contours are then interpolated between them. 

Description : Describe the procedure for setup of total station.

Last Answer : Following steps are followed for the set up of total station 1. Set up the tripod approximately over the station point. 2. Remove the plastic cap from tripod and make tripod nearly level by stretching ... 7.Focusing of object glass. 8.Check the plate level from time to time during measurement .

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.

Description : Describe layout of small building by using total station. 

Last Answer : Layout of small building by using total station: 1. On the plan supplied by an architect, number the column serially from left to right and top to bottom starting from top left corner ... setting out by comparing the diagonal distance between the extreme column centres to their calculated values. 

Description : Describe the method of setting out simple curve by using the method of offset from long chord with sketch. 

Last Answer : Given data: Direction of two straights, chainage of point of intersection, radius of curve. Procedure:  1) Set theodolite over B and measure deflection angle Ф  2) Calculate tangent length by ... equal to tangent length.  4) Divide long chord into even number of equal parts.     

Description : Explain the procedure adopted with micro optic theodolite to find reduced level.

Last Answer : Procedure adopted with micro optic theodolite to find reduced level: 1) Take out micro optic theodolite from its box and fix it on the tripod over the required station. 2) Carryout the approximate leveling ... book. 10) RLs can be obtained by line of collimation method or Rise and fall method.

Description : State any two advantages of total station over dumpy level and theodolite.

Last Answer : Advantages of total station over dumpy level and theodolite :- 1) Total station gives digital measurements of sloping, horizontal and vertical distances accurately and precisely. 2) Total station gives ... data to computer. 6) Total station used to prepare the map and drawings using softwares.

Description : State any four advantages of total station over dumpy level and theodolite.

Last Answer : Advantages of total station over dumpy level and theodolite : 1)Total station gives digital measurements of sloping, horizontal and vertical distances aaccurately and precisely. 2) Total station gives digital ... computer. 6) Total station is used to prepare the map and drawings using softwares.

Description : Explain temporary adjustment of dumpy level. 

Last Answer : Temporary adjustment of dumpy level: I. Setting up the level. i. The level fixed on tripod. ii. The legs of tripod stand are well spread so that the level will remain stable on tripod. ... screw till the image is distinct and clear. The cross hair on the diaphragm should also be seen clearly.

Description : Demonstrate the utility of Remote Sensing and GIS applications in Civil Engineering with appropriate examples. 

Last Answer : Applications of Remote Sensing in Civil Engineering 1) Silting of storage reservoirs harbors etc. - Remote sensing technique that makes use of satellite imagery gives idea about the silting of ... Impact studies 6) Natural Hazard mapping or assessment 7) Water Resources availability.

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.

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

Last Answer : Radiation method Intersection method 1. It requires the plane table to occupy a single station.  1. This method requires setting the table up at minimum of two stations.  ... for locating inaccessible points by the intersection of the rays drawn from two instruments stations. 

Description : Explain the principle of techeometry with the help of a neat sketch.

Last Answer : Principle of tacheometry is based on principle of similar triangle in which corresponding sides & altitudes are proportional The ratio of distance of base from apex and length of base is always constant. ... S3=f/i=Constant Where f=focal length of objective and i =stadia intercept  

Description : Name two software for GPS. 

Last Answer : Softwares for GPS 1).GPSWOX 2) iGO 3) HERE 4)Navigon 5)Navman 6)EasyGPS 7) Caliper 

Description : List two uses of EDM. 

Last Answer : 1.It is useful for measuring the distances that are difficult to access. 2. It is useful in topographical survey. 3.Measurement of base line in triangulation survey can be carried out speedily and ... construction of gravity dams. 5.It is useful in fixing alignment of road, railways, canals etc.

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. 

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.

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

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. 

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.

Description : Explain direct method of contouring.

Last Answer : Direct method of contouring - In this method of contouring, the contours of required reduced level are plotted on ground itself. The procedure of direct method of contouring is as follows. ... identical coloured pegs, we get the required contours on ground by this direct method of contouring. 

Description : Give classification of curve and explain any one in detail.

Last Answer : Types of curve : The curve is classified broadly in two categories 1. Horizontal curve - When the points of curve are joined in horizontal plane then it is known as horizontal curve. 2. Vertical ... roadway or railway tracks. Vertical curves are of four types. a) Summit curve b) Valley curve

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.

Description : What do you mean by zero circle in area measurement?

Last Answer : Zero Circle - It is the circle formed due to sliding of wheel of mechanical planimeter without changing the reading of circular measuring disc. It is unmeasured circular area on drawing sheet due to non-rotation of counter disc.

Description : Give the main features of total station

Last Answer : 1. Easy access to any desired programme and mode of selection 2. Automatic atmospheric correction 3. Guide message arrangement 4. Higher distance resolution 5. Two speed tangent resolution 6. Tri axis compensation 7. East to read arrangement 8. Detachable tribranch facility

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

Last Answer : GIS:- A geographic information system is a computer based tool that allows you to create, manipulate, analyze ,store & display information based on its location. Components:- 1) hardware 2) ... position &location speed and direction. Components:- 1) Antenna 2) Radio frequency

Description : Enlist the advantages and disadvantages of total station

Last Answer : Advantages of Total station - 1) Great speed of the work 2) Better accuracy in the measurements 3) Low power consumptions 4) Less time required for work. 5) Less man power required ... Total station - 1) Its high initial cost 2) There are no effective checks over its measurements.

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

Last Answer : Classification of curve is as follows1) Horizontal curve  a) Simple curve  b) Compound curve  c) Reverse curve  d) Transition curve  e) Lemniscate curve 2) Vertical curve  a) Summit curve ... their centers lie on opposites sides of the curve . They have one common tangent.

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.

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

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. 

Description : List any four modern survey instruments.

Last Answer : Following are the modern survey instruments. 1. Digital Level 2. Electronic Distance Meter (EDM) 3. Micro-optic Theodolite 4. Total Station 5. Global Positioning System (GPS) Device 6. Aerial Camera 7. Remote Sensors