Survey Camp presentation of geomatics engineering

RERORT ON:
FILED SURVEY CAMP 2075
Submitted to:
Department of Civil and Geomatics Engineering

Survey:
• art and science of determining the relative position
• By means of measurements of distance, direction and
elevation
Survey camp:
• Engineering training course
• Students use surveying equipment in filed for gaining
practical knowledge

• To become familiar with the problems that may arise during the fieldworks.
• To become familiar with proper handling of instrument and their functions.
• To become familiar with the spirit and importance of teamwork as surveying is
not a single person work.
• To complete the given project in scheduled time and thus know the value of
time.
• To collect the data in the field in systematic manner.
• To compute and manipulate the observed data in the required accuracy and
present in the diagrammatic and tabular form in order to understand by
layman.

Duration:
• 10 days (1st Mangsir to 10th Mangsir)
Location:
• Region : Gandaki
• District : Kaski
• Province : 4
Sites:
• For topographical survey: Pashimanchal Campus
• For road and bridge survey: Kali khola
Working hours:
• 7 a.m. to 5 p.m.

Day Date Survey Field Work
1st Mangsir 1 Topographic surveying and mapping; orientation, instrument handling, location assigning,
reconnaissance and conduction of traverse survey
2nd Mangsir 2 Traverse survey continued and coordinate calculation
3rd Mangsir 3 Detail surveying
4th Mangsir 4 Detail survey and traverse plotting
5th Mangsir 5 Data downloading and mapping
6th Mangsir 6 Levelling; orientation, instrument handling, location assigning, reconnaissance and conduction of
levelling and computation
7th Mangsir 7 Road survey; orientation, instrument handling, location assigning, reconnaissance and conduction of
road survey
8th Mangsir 8 Computations and plotting of road
9th Mangsir 9 Bridge survey; orientation, instrument handling, location assigning, reconnaissance and conduction
of bridge survey
10th Mangsir 10 Computation and mapping

• Determination of position of natural and artificial features of the
locality by means of conventional signs up on a topographical map
• Three-dimensional; graphical representation of position of the
earth’s surface.

• Total station
• Levelling machine
• Measuring tapes
• Tripod stand
• Ranging rods
• Staffs
• Hammer
• Pegs
• Marker pens
• Prism
• Prism stand

1. Site selection
2. Reconnaissance survey
3. Selection and making of the major and minor traverse stations
4. Measurement of the angles and length of the major and minor traverse
5. Two peg test
6. Levelling of traverse station
7. Measurement of bearing of traverse leg
8. Booking of field notes
9. Calculation of horizontal and vertical controls of traverse stations
10. Adjustment of errors
11. Detailing and plotting

• Type of surveying in which a number of connected
survey lines form the framework
• Also a method of control surveying
The survey consists of the measurement of:
• Angles between successive lines or bearing of each line
• The length of each line

1. Close traverse:
originates from a station and return to the same station
Runs between two known stations
2. Open traverse
3. Major traverse
Skeleton of lines joining those control points
Covers entire area
Two set of reading is taken for precision
4. Minor traverse
Runs through the area to make detailing easy
Covers small area
Single set of reading is taken as less precision is sufficient

• The ratio of the leg distance should be 1:2 for major traverse and 1:3 for
minor traverse
• The traverse should run in anticlockwise direction
• The difference between the mean values of two sets of readings for traverse
angle should be within a minute
• The difference of the face left and face right reading should be ±180⁰
• In case of angular measurement, it should be checked whether the sum of
interior angles is (n-2)*180⁰
• The error should be within the permissible error i.e. ±√n minutes, where n is
the number of sides.

• Used by a variety of professional from engineers, architects foresters,
geologists, etc.
• Used in planning of projects to help design the layout and location of
buildings, roads, dams, pipelines, trails, fire control route, landscapes, etc.

ROAD ALIGNMENT SURVEY
• The survey which is used to select a route for the construction of road or highway
• Allows to select short, easy, safe and economic route for the construction of road or
highway

OBJECTIVE
• To determine the best possible route for road alignment
• To design various road geometrics
• To perform profile and cross sectional levelling of road alignment
• To calculate amount of earthwork during construction of road
• To prepare plan of road alignment

INSTRUMENT REQUIRED
• Theodolite
• Levelling instrument
• Measuring tapes
• Tripod stand
• Ranging rods
• Staffs
• Hammer
• Pegs
• Marker pen

METHODOLOGY
1. Reconnaissance survey
2. Selection and marking of intersection points
3. Measuring of deflection angles
4. Measuring of the distance between the IP’s
5. Sulitable selection of radius for the suitable horizontal curves.
6. Marking of B.C., E.C. apex distance of the curve
7. Profile and cross sectional levelling
8. Filing in the field notes
9. plotting

LEVELLING
• Branch of surveying which is used to achieve the following objectives:
 To find the elevation of given points with respect to given or assumed datum
 To establish points at a given elevation or at different elevation with respect to a given or
assumed datum.

TYPES OF LEVELLING
1. Dierct levelling(spirit levelling)
a. Differential levelling
b. Profile levelling
c. Cross sectional levelling
d. Reciprocal lecvelling
2. Indirect levelling(trigonometric levelling)

BRIDGE SITE SURVEY
• gives the preliminary knowledge on selection and planning of possible bridge site
and axis for the future construction of the bridge
• Collect the preliminary data about the site such as normal water flow level, high
flood level geological features of the ground for planning and designing of the
bridge from the details taken during the surveying

METHODOLOGY
• Reconnaissance
• Site selection
• Fixing of control points and triangulation
• Levelling
 transferring R.L. from B.M. to control points
 Reciprocal levelling
 Cross sectioning

TRIANGULATION
• System to establish the horizontal control in geodetic survey
• Based on trigonometric proportion that if one side and two angles of triangle are
known, the remaining sides can be computed
• Series of joined or overlapping triangles are used in which length of one side is
called base line and is measured
• All the angles are measured and remaining sides are calculated

GEOGRAPHIC INFORMATION SYSTEM (GIS)
GIS is a system of combinations of hardware, software, people ,
methodologies for collection, recording, analyzing, querying and
displaying the geospatial data.
GIS data can be the combination of spatial and non-spatial or attribute
data.

GIS OPERATIONS
• 1. Spatial data input (field collected datas from our survey)
• 2. Attribute data management
• 3.Data display and exploration
• 4.Data Analysis (IDW, Contour generation)
• 5. Data interpolation and visualization (cartographic tools)

ARC MAP IN MAP LAYOUT AND DATA VISUALIZATION
ArcGIS - a very powerful GIS tool from ESRI was deployed to carry analysis of data and
design of map layouts.
The powerful features with fluent Graphical Interface makes easier to perform data
exploration, efficiently design map layouts, generate contours of desired interval, or visualize
the data in required formats.

ARCGIS TOOLS IN SURVEY CAMP
-Preparation of the Topographic map of the surveyed area.
-Preparation of the contour map of the bridge site.
-Preparation of the cross-section of the river site.

GIS : CONCLUDING REMARKS
ARCGIS saved time, effort and gave us better insights of our data
maintaining the accuracy.
The data analysis was much easier saving a lot of human effort.
Similarly, GIS has a lot of usages and application with advanced database
features integrated in the software

Survey Camp presentation of geomatics engineering

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