This document discusses various topics related to surveying including: the objectives and processes involved in surveying like decision making, fieldwork, data processing, mapping, and stakeout; different types of surveys like plane, geodetic, topographic, route, hydrographic, land, and military surveys; instruments used like theodolites, tacheometers, planes tables, and compasses; and concepts like bearings, meridians, and reducing bearings. The key aspects covered are the goal of producing maps, the consideration or disregard of earth's curvature depending on survey type, and classification based on area, instruments, or purpose.
Introduction to surveying, ranging and chainingShital Navghare
This presentation contains the complete introduction of surveying. It also includes all the instrucments used in linear measurement and the terms related to Ranging and Chaining
Surveying is an important part of Civil engineering. Various part like theodolite, plane table surveying, computation of area and volume are useful for all university examination and other competitive examination
Introduction to surveying, ranging and chainingShital Navghare
This presentation contains the complete introduction of surveying. It also includes all the instrucments used in linear measurement and the terms related to Ranging and Chaining
Surveying is an important part of Civil engineering. Various part like theodolite, plane table surveying, computation of area and volume are useful for all university examination and other competitive examination
Surveying Levelling & Contouring Unit 2 Notes updating.pptx (1).pdfDenish Jangid
Levelling
Datum
Reduced Level
Absolute Level
MSL
Back sight
Fore sight
Intermediate sight
Types of BenchMark
Height of instrument
Rise & Fall Method
Temporary benchmark
Great Trigonometric Survey BM
Line of Collimation
Barometric levelling
Trigonometric Leveling
Fly leveling
Profile leveling
Dumpy Level
Y level or Wye-level
Tilting Level
Reversible Level
Auto Level
Automatic Level
Levelling Staff
Self reading staff
Target staff
Contour
Characteristic of Contours
Uses of contours maps
Contour Interval and Horizontal Equivalent
Errors in leveling
Earth curvature
Refraction
Collimation errors
Numerical on HI, Rise & Fall Method
This ppt presentation covers compass surveying, which explains principal of compass surveying, Types of compass, Difference between compass, Bearing, Definitions related to compass surveying etc.
Compass surveying is a type of surveying in which the directions of surveying lines are determined with a magnetic compass, and the length of the surveying lines are measured with a tape or chain or laser range finder. The compass is generally used to run a traverse line.
The Global Positioning System is a satellite-based radio navigation system for determination of precise position and time, using radio signals from the satellites, in real-time or in post-processing mode.
Chain survey is the simplest method of surveying. ... The necessary requirements for field work are chain, tape, ranging rod, arrows and sometime cross staff. It is a system of surveying in which sides of various triangles are measured directly in the field and NO angular measurements are taken.
Surveying Levelling & Contouring Unit 2 Notes updating.pptx (1).pdfDenish Jangid
Levelling
Datum
Reduced Level
Absolute Level
MSL
Back sight
Fore sight
Intermediate sight
Types of BenchMark
Height of instrument
Rise & Fall Method
Temporary benchmark
Great Trigonometric Survey BM
Line of Collimation
Barometric levelling
Trigonometric Leveling
Fly leveling
Profile leveling
Dumpy Level
Y level or Wye-level
Tilting Level
Reversible Level
Auto Level
Automatic Level
Levelling Staff
Self reading staff
Target staff
Contour
Characteristic of Contours
Uses of contours maps
Contour Interval and Horizontal Equivalent
Errors in leveling
Earth curvature
Refraction
Collimation errors
Numerical on HI, Rise & Fall Method
This ppt presentation covers compass surveying, which explains principal of compass surveying, Types of compass, Difference between compass, Bearing, Definitions related to compass surveying etc.
Compass surveying is a type of surveying in which the directions of surveying lines are determined with a magnetic compass, and the length of the surveying lines are measured with a tape or chain or laser range finder. The compass is generally used to run a traverse line.
The Global Positioning System is a satellite-based radio navigation system for determination of precise position and time, using radio signals from the satellites, in real-time or in post-processing mode.
Chain survey is the simplest method of surveying. ... The necessary requirements for field work are chain, tape, ranging rod, arrows and sometime cross staff. It is a system of surveying in which sides of various triangles are measured directly in the field and NO angular measurements are taken.
Upon completing the course, the students will be able to:
1. Define and state the scope of surveying and geomatics in civil engineering
2. Understand the basic principles of surveying and geomatics engineering
3. Apply the different methods of surveying and geomatics to measure the features of interest
4. Analyze the traditional and advanced methods of surveying
5. Evaluate the different techniques of surveying and geomatics in solving real world problems.
6. Design and construct solutions for real world problems related to surveying and geomatics.
Distance Measurement & Chain Surveying
Contents
• Introduction About Surveying
.
• Primary Division Of Surveying • Classification Of Surveying • Distance Measurement And Chain Surveying • Principle Of Surveying • Types Of Tapes Based On The Materials Used • Erecting And Dropping A Perpendicular • Obstacle In Chain Survey • Types Of Errors • Corrections of Tape • Off –Sets • Ranging • Conclusion . • Homework And Next Lecture . • References.
-Definition of Surveying.
Types of Surveying
1. Plane Surveying
2. Geodetic Survey
3. Cadastral surveying
4. Aerial Surveying
5. Hydro graphic Surveying (Hydro-Survey)
6. Topographical Survey
7. Engineering Survey.
Primary division of Surveying
Reconnaissance.
• This is preliminary survey of the land to be surveyed. It may be either
1-Ground reconnaissance 2- Aerial reconnaissance survey.
Objectives of Reconnaissance
1. To ascertain the possibility of building or constructing route or track through the area.
Classification of Surveying:
1- Classification based on the instruments used:
A. Chain Surveying.
B. Compass Surveying.
C. Theodolite Surveying.
D. Tachometric Surveying .
E. Trigonometric Surveying.
F. Total station and GPS.
G. Photogrammetric and Aerial Surveying.
H. Plan Table .
2- According to the method used:
i. Traversing .
ii. Triangulation .
iii. Tacheometric.
iv. Trigonometric.
3- According to the Purpose of surveying:
i. Engineering survey.
ii. Military survey.
iii. Geological survey .
iv. Topographical survey
Chain and Tape Survey
-Length& Distance Measurements.
-Distance Measurement and Chain Surveying.
• In general there are two methods:
1- Direct methods of measuring lengths
2- Indirect methods of measuring distances.
There are two kinds of measurements used in plane surveying.
*Linear measurements
*Angular measurements
-Instruments used in Chain Surveying.
Types of tapes based on the materials used.
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Asst. Prof. Salar K.Hussein
Mr. Kamal Y.Abdullah
Asst.Lecturer. Dilveen H. Omar
Erbil Polytechnic University
Technical Engineering College
Civil Engineering Department
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3. 1.Decision Making – selecting method, equipment and final
point locations.
2.Fieldwork & Data Collection – making measurements and
recording data in the field.
3.Computing & Data Processing – preparing calculations based
upon the recorded data to determine locations in a useable
form.
4.Mapping or Data Representation – plotting data to produce a
map, plot, or chart in the proper form.
5. Stakeout – locating and establishing monuments or stakes in
the proper locations in the field.
4.
5. 1. The object of surveying is to prepare a map or
plan to show the relative positions of the
objects on the surface of the earth.
2. The map or
plan is drawn to some suitable scale. It also
shows boundaries of districts, states, and
co.
3. It also includes details of
different engineering features such as
buildings, roads, railways, dams, canals etc.
untries too.
6.
7.
8. Ruling principle of survey is :
i) “ to work from whole to part”. For surveying
Establish control points with high precision by use of Triangulation
and precise levelling. Area is further divided into triangle,
which are surveyed with less accuracy.
ii) to fix the position of new stations by at least two
independent processes – By linear and Angular
11. The shape of the earth is spherical. Thus the surface
is obviously curved. But in plane surveying the
curvature of earth is not taken into account.
This is because plane surveying is carried out over
a small area, so the surface of the earth is
considered as a plane. The degree of accuracy
required in this type of surveying is completely low.
Plane surveying is done on an area of less than 250
sq.km.
12.
13. In geodetic surveying the curvature of the earth is taken into
consideration. It is extended over a large area greater than
250 sq.km. The line joining any two points considered as a
curved line.
Very refined methods and instruments are used in this type of
surveying. In this method very high precision or accuracy is
required.
14.
15. Survey can be classified on different
bases:
1. Based on instrument:
Chain Survey
Compass survey
Plane Table survey
Theodolite survey
Tacheometric Survey
Photographic survey
19. 1.Photogrammetry – mapping utilizing data obtained by
camera or other sensors carried in airplanes or
satellites.
2.Boundary Surveying – establishing property corners,
boundaries, and areas of land parcels.
3.Control Surveying – establish a network of horizontal
and vertical monuments that serve as a reference
framework for other survey projects.
4.Engineering Surveying – providing points and
elevations for the building Civil Engineering
projects.
20. 5. Topographic Surveying – collecting data and
preparing maps showing the locations of
natural man-made features and elevations of
points of the ground for multiple uses.
6. Route Surveys – topographic and other
surveys for long – narrow projects associated
with Civil Engineering projects.
› Highways, railroads, pipelines, and
transmission lines.
6. Hydrographic Surveying – mapping of
shorelines and the bottom of bodies of water.
› Also known as bathymetric surveying.
21.
22. The principle of surveying is traversing;
which involves a series of lines which are
connected
23. 1. Cylindrical metal
box
2. Pivot
3. Lifting pin and
lifting liver
4. Magnetic Needle
5. Graduated Ring
6. Prism
7. Object vane
8. Eye Vane
9. Glass Cover
10. Sun Glasses
11. Reflecting Mirror
12. Spring Brake or
Brake Pin
24.
25. The various instruments used in the compass survey are :
Prismatic compass
Tape
Ranging rods
Tripod
Arrows
Plumb Bob
26. • Prismatic Compass comprises of a magnetic
needle attached to the circular ring made up of
aluminum.
• The needle is on the pivot and will orient itself in the
magnetic meridian
• The line of sight is defined by the objective vane
and the eye slit, both attached to the compass
box.
27. The object vane frame can be folded on the glass
lid which covers the top at box.
28.
29. The following are the adjustments usually
necessary in the prismatic compass:
• Centering
• Leveling
• Focusing the prism.
30.
31. CENTERING:
The center of the compass is placed vertically over the station point by
dropping a small piece of stone below the center of the compass, it falls on
the top of the peg marking that station.
LEVELLING:
By means of ball and socket arrangement the Compass is then leveled the
graduated ring swings quite freely. It may be tested by rolling a round pencil
on the compass box.
FOCUSSING THE PRISM :
The prism attachment is slid up or down focusing till the readings are seen to
be sharp and clear
32. The bearing of a line is the horizontal angle which it makes with
a reference line(meridian).
• Depending upon the meridian , there are four type of bearings
they are as follows:
1) True Bearing: The true bearing of a line is the horizontal
angle between the true meridian and the survey line. The true
bearing is measured from the true north in the clockwise
direction.
• 2) Magnetic Bearing: the magnetic bearing of a line is the
horizontal angle which the line makes with the magnetic north.
• 3) Grid Bearing: The grid bearing of a line is the horizontal
angle which the line makes with the grid meridian.
• 4) Arbitrary Bearing: The arbitrary baring of a line is the
horizontal angle which the line makes with the arbitrary
meridian.
33. • 3) Grid Bearing: The grid bearing of a line is the
horizontal
angle which the line makes with the grid meridian.
• 4) Arbitrary Bearing: The arbitrary baring of a line
is the
horizontal angle which the line makes with the
arbitrary
meridian.
35. • The bearing are designated in the
following two system:-
• 1) Whole Circle Bearing System.(W.C.B)
• 2) Quadrantal Bearing System.(Q.B)
36. • The bearing of a line measured with respect to magnetic
meridian in clockwise direction is called magnetic bearing
and its value varies between 0 to 360 .ᴼ ᴼ
• The quadrant start from north an progress in a clockwise
direction as the first quadrant is 0 to 90 in clockwiseᴼ ᴼ
direction , 2nd 90 to 180 , 3rd 180 to 270 , and up to 360ᴼ ᴼ ᴼ ᴼ ᴼ
is 4th one.
37.
38. • In this system, the bearing of survey lines are
measured wrt
to north line or south line which ever is the nearest
to the
given survey line and either in clockwise direction
or in anti
clockwise direction.
39. •When the whole circle bearing is converted into
Quadrantal
bearing , it is termed as “REDUCED BEARING”.
• Thus , the reduced bearing is similar to the
Quadrantal
bearing.
• Its values lies between 0 to 90 , but the quadrantᴼ ᴼ
should be
mentioned for proper designation
40. •When the whole circle bearing is converted into
Quadrantal
bearing , it is termed as “REDUCED BEARING”.
• Thus , the reduced bearing is similar to the
Quadrantal
bearing.
• Its values lies between 0 to 90 , but the quadrantᴼ ᴼ
should be
mentioned for proper designation