Survey 11
Survey 11
AT DHAMPUS, POKHARA
Submitted as a partial fulfilment of requirements of the Degree of Bachelor of Degree of
Civil Engineering under Pokhara university
ii
ABSTRACT
This report is the outcomes of 10 days’ survey camp 2079 Dhampus Survey Camp
organized by the survey instruction committee, Department of Civil Engineering, OCEM
for the students of 075 – BE Batch as per the syllabus of BE. The camp was held inside the
Kaski district in Dhampus from the date 15 th to 24th of Baishakh 2079 B.S. The report
reflects the methodology, observation, and calculation made by the student in the camp with
the corresponding drawing.
The large portion is of course covered with elements of topographic surveying, and then
those of road alignment and bridge site survey follow it. Surveying the science and art of
determining the relative position of above, on or, beneath the surface of earth, and is the
most important part of civil engineering. The result of survey is used to map the earth,
prepare navigational charts, establish property boundaries, develop data of the land used and
natural resource information etc. further survey maintains highway, railroads, building,
bridge, tunnel, canal, dams and many more. Thus, the objective of survey camp was to make
us gain the experience in this field by performing topographic survey in a large area,
learning to propose road alignment and select suitable site for bridge axis.
The report is prepared with the great efforts and dedication of the students who have
devoted their immense from the very first time of the field work till today. The students are
always learning for the knowledge and promotion. Therefore, we feel that this report
deserves the excuse and tolerance from the readers for any error or blunders present, despite
the best efforts.
Keywords: Surveying, Topographic surveying, Levelling, Fly levelling, Road Survey,
Bridge site survey, Longitudinal section, Cross-section etc.
ii
i
ABBREVATIONS
B.E. Bachelor in Engineering
OCEM Oxford College of Engineering and Management
RL Reduced Level
IP Intersection Point
BM Bench Mark
BC Beginning of curve (Point of Commencement)
EC End of curve (Point of Tangency)
CP Changing point
HFL High Flood Level
TBM Temporary Bench Mark
iv
LIST OF FIGURES
Fig No: Description Page No.
1.3a. Area location from Hemja road to Dhampus Resort 3
3.3a. Two Peg Test 24
4.2a. Simple Circular Curve 37
5.8a. Bridge Site Triangulation 54
v
Table of Contents
A PROJECT REPORT ON SURVEYING 2079 AT DHAMPUS, POKHARA .....................i
ACKNOWLEDGEMENT .......................................................................................................i
i
ABSTRACT ...........................................................................................................................iii
ABBREVATIONS .................................................................................................................iv
vi
CHAPTER
I .............................................................................................................................1
INTRODUCTION ...................................................................................................................1
1.1General............................................................................................................................1
1.4 Camp
Area .....................................................................................................................4
CHAPTER II ...........................................................................................................................
5
2.1 General...........................................................................................................................
5
vi
2.5 Instruments Used ...........................................................................................................
6
2.6
Methodology ..................................................................................................................7
CHAPTER II .........................................................................................................................23
3.1 General.........................................................................................................................
23
CHAPTER
IV ........................................................................................................................35
4.2Technical
Specifications ...............................................................................................35
vi
i
4.3 Equipment & Accessories ...........................................................................................
36
4.4
Methodology ................................................................................................................36
4.4.1Reconnaissance ......................................................................................................... 36
CHAPTER V .........................................................................................................................
50
5.1 General.........................................................................................................................
50
5.4 Technical
Specifications ..............................................................................................50
vi
ii
5.6.3 Longitudinal Section ............................................................................................
53
5.6.4Cross-section .........................................................................................................53
ix
CHAPTER I
INTRODUCTION
1.1 General
Surveying is the branch of engineering that deals with the art and science of determining the
relative positions of different objects on or beneath the surface of the earth, by
measurements of distances, directions and elevations. The application of surveying requires
the knowledge of mathematics, physics, and to some extent, astronomy. It comes first,
before and during all Engineering works such as designing and construction of highways,
water supply systems, irrigation projects, buildings etc. The B.E. Survey Camp 2022
organized by the Oxford College of Engineering & Management is a part of the four-year
Bachelor's degree in Civil Engineering course, third year second part, carrying a total of 100
marks. The total duration of the survey camp was 10 days, from 15 th Baishakh to 24th
Baishakh. Surveying is the main roots for the execution of any civil engineering projects.
The science of surveying has been developing since the initial stage of human civilization
according to their requirements. The art of surveying preparation of maps has been practiced
from the ancient times and the further advanced until present. In the absence of the map, it is
impossible to layout the alignments of road, canals tunnels, transmission power line, bridge
site, building & so on. Detailed map of the sites of engineering projects are necessary for the
precision establishment of sophisticated instruments. Surveying is the first step for the
execution of any project. As the success of any engineering project is based upon the
accurate and complete survey work, an engineer must therefore be thoroughly familiar with
the principle and different methods of surveying and mapping. For the purpose of water
supply-sanitary system, irrigation system, highway designing, the relative altitudes are
required, which is ascertained by the process of levelling. The details of the enclosed area
and the ground nature can also be portrayed in the combined form of a topographic map.
Not only this, the whole land can be surveyed as different areas and can be plotted into a
single map, the main thing is not to violate the basic survey principles viz. working from
whole to part, consistency in work, accuracy required according to scale and independent
check. As a basic part of these principles, horizontal and vertical contours are fixed prior to
the work of detailing, while surveying large areas. These necessities are also fulfilled while
fixing intersection points for the primary survey on road. For the survey on river, especially
for bridge site, the triangulation method is carried over for horizontal control and fixing
control station for further references. In addition, for vertical control fly levelling is run to
1
form closed circuit. These all are done very precisely by OCEM Batch 2018, Survey Camp
2079/Group 11 accurately to achieve the good result. Hence, the work done during the camp
duration can be categorized into three main projects:
a) Topographical survey / Traverse detailing of major & minor traverse station of land b)
Besides, the main objective mentioned above some other objectives can be listed as:
1. To familiarize individuals with the concept of team work as surveying is not a oneman
game.
2. To familiarize students with the parts, functions and handling of surveying instruments
and their use in surveying.
3. To familiarize students with the problems that are likely to arise during the fieldwork. For
e.g., Weather, ground features etc.
4. To complete the given project in scheduled time and thus gives students a feel of facing
and completing deadlines.
2
6. To complete and manipulate the observed data in the required accuracy and present it in
diagrammatic and tabular form in such a way that it is understood other engineers easily
and gives the layman an idea of what has been done.
Thus, this survey camp was organized to give the students an opportunity to feel the
difference between theoretical knowledge and practical work and hence develop a quality in
them by virtue of which they will be able to make a link between the two different aspects
of engineering education.
• Zone: Gandaki
• District: Kaski
• Place: Dhampus
3
1.4 Camp Area
This portion of the report gives information about the Topography, Geology, Temperature
and Climate of the camp area i.e., Dhampus. The Nepalese town Dhampus is located North
of Pokhara Valley. The GPS coordinate of the Dhampus resort is (Northing, Easting) is
(28.2934702, 83.8687471). During the survey period, the temperature was between (18-23)
ºC at day time. The weather is pleasant during the day and nights are frequently bitterly cold
with some rainfall. The elevation of the camp area is 1694m from mean sea level. The camp
area we surveyed was mostly grass area having terrain topography. It is peaceful, pollution
free and idealized area as required for the survey.
➢ Longitude: 28.2934702N
➢ Latitude: 83.8687471E
➢ Elevation: 1694m
➢ Major crops: Subtropical region with major crops Maize, Wheat and Millet.
4
CHAPTER II
TOPOGRAPHIC SURVEYING
2.1 General
Topographic survey involves determining the horizontal and vertical locations of objects on
the surface of the earth. Horizontal Location entails locating ‘objects’ like roads, railways,
ponds, houses, boundaries of properties, etc. by measuring horizontal distance; the objects
are indicated by symbols. Vertical location includes the location of hills, valleys,
depressions, benchmarks, RLs of points, etc. by measuring vertical distance; the objects in
this case are represented in relief. Thus, a topographic map shows the nature of the earth
surface along with the positions of different objects.
Topographical surveying is done to determine the position of natural and artificial features
on both plan and elevation. In other words, determining the configuration (relief) of the
earth's surface and to locate natural and cultural features on it is topographical survey. From
the survey data, topographic maps that depict these natural and cultural features are
produced using various types of lines and conventional symbols. Topographic is simply the
graphical representation of positions of the earth's surface.
2.2 Objectives
The main objective of topographical survey is:
1. To prepare the topographic map of the given area with horizontal and vertical control at
required accuracy.
1. Conduct reconnaissance survey of the given area. Form a close traverse (major) around
the perimeter of the area by making traverse stations. In the selection of the traverse
station, make sure that the stations are intervisible and maintain the ratio of maximum
traverse leg to minimum traverse leg 2:1 for major traverse and 3:1 in the case of minor
traverse.
5
2. Measure the traverse legs in the forward and backward directions by means of a tape
calibrated against the standard length provided in the field, note that discrepancy
between forward and backward measurements should be better than 1:2000.
3. Measure traverse angle on two sets of reading by theodolite. Note the difference
between the mean angles of two sets reading should be within minute.
4. Determine the R.L. of traverse stations by fly leveling from the given arbitrary B.M.
Perform two -peg- test before the start of fly leveling. Note the collimation error should
be less than 1:10000. Maintain equal fore sight and back sight distances to eliminate
collimation error. Permissible error for fly leveling is 25√k mm, where k is the
distance in kilometer.
6. Balance the traverse. The permissible angular error for the sum of interior angles of the
traverse should be less than ±√n minute. For major and minor traverse, the relative
closing error should be less than 1:2000 and 1:1000 respectively.
7. Plot the major and minor traverse stations by coordinate method in appropriate scale
(1:500, 1:500 respectively).
8. Carry out the detail survey of the given area with reference to the major and minor
traverse, which have been already plotted. Use conventional symbols for plotting.
2. Ranging rods
3. Tapes
4. Hammer
5. Wooden Pegs
6. Marker
6
7. Prism with prism rod
8. Prism Holder
9. Tripod
2.6 Methodology
The methodology of surveying is based on the principle of surveying i.e., work from whole to
part with independent checks. The work done should be accurate and consistent.
2.6.1 Reconnaissance
Reconnaissance means the exploration or scouting of an area. In survey, it involves walking
around the survey area and roughly planning the number of stations and the position of the
traverse stations. Recce is primarily done to get an overall idea of the site. This helps to
make the necessary observations regarding the total area, type of land, topography,
vegetation, climate, geology and intervisibility conditions that help in detailed planning. The
following points have to be taken into consideration for fixing traverse stations:
2. The whole area should include the least number of stations possible.
3. The traverse station should maintain the ratio of maximum traverse leg to minimum
traverse leg less than 3:1.
4. The steep slopes and badly broken ground should be avoided as far as possible, which may
cause inaccuracy in tapping.
5. The stations should provide minimum level surface required for setting up the instrument.
6. The traverse line of sight should not be near the ground level to avoid the refraction.
7. Taking the above given points into consideration, the traverse stations were fixed. Then
two-way taping was done for each traverse leg. Thus, permanent fixing of the control
points completes recce.
7
2.6.2 Major Traverse
Traversing is a type of survey in which a number of connected survey lines form a
framework enclosing the area to be surveyed. Working from whole to part is the principle.
So, the whole area is enclosed by number of control points of which details are necessary.
The skeleton of lines joining those control points, which covers the whole entire area is
called Major Traverse. Work on Major traverse must be precise. So, two-set of reading
should be taken for Major Traverse. For convenience, the readings are taken by setting the
theodolite at 0˚00'00" for one set and 90˚00'00" for the second. In the Survey area, only one
type traverse - major was established. The major traverse had 18 control stations including
one given control points.
The control stations were named as 1, 2, … and CP1 & CP2 was given control points. The
leg ratio of maximum traverse leg to minimum traverse leg was maintained within 2:1. The
discrepancy in length between the forward measurements and the backward measurements
of all the traverse legs was within 1:2000. Two sets of theodolite readings were taken for
measuring the horizontal traverse angles. The difference between the mean angles of two
sets of readings was within a second for all the angles.
Computation of Co-ordinates:
The length of the traverse is measured by total station. The traverse angles are measured
with a total station by setting up the instrument at each station. The bearing of the any one
of the traverse legs is measured and the entire traverse angle is measured, the bearing of all
the legs can be calculated by:
Bearing of a line = (bearing of previous line +included angle) (180) or (540)
If is the bearing of line (say, 11G1), and l be the length of the line and provided that
coordinate of the control point (11G1) is known then the co-ordinate of the point ‘1’ and can
be calculated as follows:
X-coordinate of 1=x-coordinate of control point (CP1) +L*sin
Y-coordinate of 1=y-coordinate of control point (CP1) +L*cos
R.L or z-coordinate of 1=R.L of point (CP1) + H.I ±V-Height of signal.
Where, H. I=Height of instrument
V=vertical distance
It is not sufficient to detail the area by enclosing with the help of major traverse. Minor
traverse is that one which runs through the area to make detailing easy. Minor Traverse
covers only small area. Less precise work than that of major traverse is acceptable so that
single set reading is sufficient minor traverse. The discrepancy in length between the
8
forward measurements of all the traverse legs should within 1:3000. Two sets of theodolite
readings should be taken for measuring the horizontal traverse angles. The angular error for
the sum of interior angles of the traverse should be less than ± 1.5n minute. The relative
closing error for the major traverse should be less than 1:2000. Finally, the minor traverse
should be plotted by the coordinate method in a scale of 1:500 on an A3 size drawing paper.
9
OXFORD COLLEGE OF ENGIEERING AND MANAGEMENT
Gaindakot-2, Nawalparasi (Ba. Su. Pu.)
TOTAL CO- ORDINATE CALCULATION SHEET
CP1 CP1-CP2 23.347 233 24 35 233.410 -0.153 233.407 242.000 -10.961 -20.614 0 0 -10.961 -20.614 3133006.114 781225.388 CP1
CP2 CP2-P4 30.073 96 16 15 96.271 -0.153 96.268 158.268 -27.936 11.135 0.00551 - -27.930 11.129 3132995.153 781204.774
0.00608
P4 P4-P5 22.018 168 12 10 168.203 -0.153 168.200 146.469 -18.354 12.163 0.00403 - -18.350 12.158 3132967.223 781215.903
0.00445
P5 P5-P6 29.893 156 6 0 156.100 -0.153 156.097 122.566 -16.091 25.193 0.00548 - -16.085 25.187 3132948.873 781228.061
0.00604
P6 26.020 130 20 20 130.339 -0.153 130.336 72.902 7.650 24.870 0.00477 - 7.655 24.865 3132932.788 781253.248
0.00526
P7 25.074 163 27 35 163.460 -0.153 163.457 56.359 13.891 20.875 0.00459 - 13.895 20.870 3132940.443 781278.113
0.00507
P8 29.978 214 4 45 214.079 -0.153 214.077 90.436 -0.228 29.977 0.00549 - -0.223 29.971 3132954.338 781298.982
0.00606
P9 27.946 100 51 45 100.863 -0.153 100.860 11.296 27.405 5.474 0.00512 - 27.410 5.468 3132954.115 781328.953
0.00565
P10 15.104 124 41 25 124.690 -0.153 124.688 315.984 10.862 -10.495 0.00277 - 10.865 -10.498 3132981.525 781334.422
0.00305
P11 16.941 254 7 0 254.117 -0.153 254.114 30.098 14.657 8.496 0.0031 - 14.660 8.492 3132992.390 781323.923
0.00343
P12 16.104 196 29 20 196.489 -0.153 196.486 46.584 11.068 11.698 0.00295 - 11.071 11.694 3133007.050 781332.416
0.00326
P13 18.737 126 25 25 126.424 -0.153 126.421 353.005 18.598 -2.282 0.00343 - 18.601 -2.286 3133018.121 781344.110
0.00379
P14 29.875 88 7 25 88.124 -0.153 88.121 261.126 -4.608 -29.517 0.00547 - -4.603 -29.523 3133036.722 781341.825
0.00604
P15 22.099 240 44 15 240.738 -0.153 240.735 321.861 17.381 -13.648 0.00405 - 17.385 -13.652 3133032.119 781312.301
0.00447
P16 21.193 145 11 30 145.192 -0.153 145.189 287.050 6.214 -20.262 0.00388 - 6.218 -20.266 3133049.504 781298.649
0.00429
P1 26.572 147 24 5 147.401 -0.153 147.399 254.449 -7.124 -25.599 0.00487 - -7.119 -25.605 3133055.722 781278.383
0.00537
10
P2 29.557 158 39 40 158.661 -0.153 158.659 233.108 -17.743 -23.639 0.00541 - -17.738 -23.645 3133048.603 781252.779
0.00598
P3 25.037 135 29 15 135.488 -0.153 135.485 188.593 -24.756 -3.741 - - -24.761 -3.746 3133030.865 781229.134
0.00459 0.00506
CP1 0.000 -0.153 -0.003 8.590 0.000 0.000 0 0 0.000 0.000 3133006.105 781225.388
435.568 2880.046 -2.903 2879.997454 -0.076 0.083 0.066 -0.083 -0.009
Number of stations= 18
Theoretical Sum of interior angles= 2880 degrees
Measured Sum = 2880.046 degrees
Error in angular measurement = 2.750 minutes
permissible error in angular closure= 4.243 minute
OK
Correction to each angle= -0.153 minutes
∑𝐿
𝐶𝑜𝑟𝑟𝑒𝑐𝑡𝑖𝑜𝑛 𝑡𝑜 𝑙𝑎𝑡𝑖𝑡𝑢𝑑𝑒 𝑜𝑓 𝑎 𝑙𝑖𝑛𝑒 ( 𝐶𝐿) = 𝑃′ 𝑥 𝑙𝑒𝑛𝑔𝑡 ℎ 𝑜𝑓 𝑡ℎ𝑒 𝑙𝑖𝑛𝑒
∑𝐷
𝐶𝑜𝑟𝑟𝑒𝑐𝑡𝑖𝑜𝑛 𝑡𝑜 𝑑𝑒𝑝𝑎𝑟𝑡𝑢𝑟𝑒 𝑜𝑓 𝑎 𝑙𝑖𝑛𝑒 (𝐶𝐷) = 𝑃′ 𝑥 𝑙𝑒𝑛𝑔𝑡 ℎ 𝑜𝑓 𝑡ℎ𝑒 𝑙𝑖𝑛𝑒
11
Detailing for topo map
S.N. N E Z REMARKS
1 3132967 781337.2 1376.117 1M6
2 3132942 781314.1 1372.384 1M5
2 3132942 781314.1 1372.384 1M5
3 3132952 781330 1375.743 1M5
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11 3132957 781328 1377.228 1M5
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1 3132967 781337.2 1376.117 1M6
26 3133003 781322 1380.717 1M7
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13
33 3133002 781332 1380.718
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15
102 3132969 781303.5 1380.168
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17
162 3132988 781230 1379.499 1M10
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18
200 3132929 781257.6 1375.214 1M10
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19
237 3133004 781272.4 1386.887 1M10
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20
273 3132969 781302.6 1373.412 1M6
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285 3132947 781282.1 1371.762 1M4
286 3132944 781279.6 1371.76 1M4
287 3132940 781274.5 1371.713 1M4
288 3132937 781268.5 1371.751 1M4
289 3132936 781262 1371.737 1M4
290 3132936 781253.7 1371.75 1M4
21
307 3132941 781282.9 1371.543 1M4
308 3132937 781279.7 1371.417 1M4
309 3132934 781276.6 1371.595 1M4
310 3132932 781272.2 1371.577 1M4
311 3132931 781269 1371.471 1M4
312 3132930 781265.7 1371.514 1M4
313 3132929 781262.1 1371.569 1M4
314 3132930 781256.5 1371.53 1M4
315 3132930 781253.6 1371.384 1M4
316 3132931 781249.4 1371.441 1M4
317 3132929 781250.6 1371.083 1M4
318 3132928 781251.7 1371.077 1M4
319 3132926 781253.1 1371.059 1M4
320 3132924 781254.7 1371.127 1M4
321 3132924 781254.7 1371.126 1M4
322 3132921 781258.6 1370.619 1M4
323 3132919 781261 1370.644 1M4
324 3132918 781265.2 1370.598 1M4
325 3132919 781268 1370.624 1M4
326 3132920 781273.1 1370.506 1M4
327 3132923 781282.9 1370.097 1M4
328 3132928 781287.2 1370.342 1M4
329 3132932 781288.2 1370.142 1M4
330 3132935 781286.3 1370.308 1M4
331 3132933 781287.4 1370.183 1M4
332 3132935 781290 1369.975 1M4
333 3132938 781291.1 1369.896 1M4
334 3132942 781292.1 1370.05 1M4
335 3132945 781290.2 1371.091 1M4
336 3132939 781287.7 1371.151 1M4
337 3132936 781285.8 1371.192 1M4
22
344 3132939 781246.7 1371.754 1M4
345 3132939 781249.6 1371.977 1M4
346 3132941 781267.8 1371.991 1M4
347 3132943 781272.7 1371.891 1M4
348 3132946 781277.1 1372.01 1M4
349 3132949 781281.1 1371.829 1M4
350 3132957 781283.1 1372.281 1M4
351 3132954 781281.2 1372.287 1M4
352 3132950 781277.3 1372.245 1M4
353 3132948 781274.5 1372.207 1M4
354 3132946 781269.2 1372.264 1M4
355 3132944 781264.1 1372.217 1M4
356 3132943 781251 1372.33 1M4
357 3132942 781242.9 1372.204 1M4
358 3132945 781245.1 1372.328 1M4
359 3132937 781243.9 1371.55 1M4
359 3132937 781243.9 1371.55 1M3
360 3132937 781243.9 1371.55 1M3
361 3132934 781281.6 1371.135 1M6
362 3132958 781220 1375.601 1M6
362 3132958 781220 1375.601 1M6
360 3132937 781243.9 1371.55 1M3
360 3132937 781243.9 1371.55 1M3
362 3132958 781220 1375.601 1M2
360 3132937 781243.9 1371.55 1M3
363 3132947 781240.4 1372.839 1M2
364 3132947 781236.3 1372.899 1M2
365 3132947 781231.9 1372.776 1M2
366 3132946 781231.1 1373.649 1M2
367 3132946 781225.7 1373.512 1M2
368 3132946 781227.5 1373.534 1M2
369 3132951 781233.1 1373.506 1M2
370 3132948 781245 1372.408 1M2
371 3132951 781244.3 1372.768 1M2
372 3132952 781244 1373.195 1M2
373 3132954 781252.7 1373.118 1M2
374 3132956 781261.7 1373.124 1M2
375 3132960 781264.3 1373.675 1M2
23
376 3132959 781257.3 1373.692 1M2
377 3132956 781247.5 1373.659 1M2
378 3132953 781238 1373.572 1M2
24
413 3132964 781223.7 1375.88 1M2
414 3132969 781232.3 1375.858 1M2
415 3132971 781239 1375.826 1M2
416 3132973 781240.2 1375.85 1M2
417 3132977 781240.1 1375.802 1M2
418 3132981 781243 1375.852 1M2
419 3132986 781245.9 1375.868 1M2
420 3132983 781256.3 1375.466 1M2
421 3132973 781209.4 1376.412 1M2
422 3132973 781219.8 1376.521 1M2
423 3132977 781232.9 1376.482 1M2
424 3132982 781239.8 1376.394 1M2
425 3132989 781240.6 1376.262 1M2
426 3132997 781242.2 1376.342 1M2
427 3132986 781239.8 1376.285 1M2
428 3132984 781234.3 1376.473 1M2
429 3132987 781230.6 1376.894 1M2
430 3132997 781235.6 1376.941 1M2
431 3133006 781237 1376.99 1M2
432 3133011 781236.6 1376.975 1M2
433 3133011 781236.6 1376.995 1M2
362 3132958 781220 1375.601 1M6
359 3132937 781243.9 1371.55 1M4
362 3132958 781220 1375.601 1M6
359 3132937 781243.9 1371.55 1M4
434 3132939 781241.9 1376.821 1M2
435 3132938 781245.4 1376.898 1M2
436 3132952 781244.8 1377.084 1M2
437 3132956 781247.4 1376.948 1M2
438 3132951 781240.9 1376.947 1M2
439 3132947 781238.5 1376.99 1M2
440 3132943 781238.1 1377.082 1M2
441 3132940 781238.5 1376.918 1M2
442 3132957 781252.5 1377.701 1M2
443 3132952 781249.8 1377.685 1M2
444 3132923 781259.8 1377.749 1M2
444 3132923 781259.8 1377.749 1M2
362 3132958 781220 1375.601 1M6
25
444 3132923 781259.8 1377.749 CP2
362 3132958 781220 1375.601 1M6
445 3132953 781264.8 1377.645 CP2
446 3132929 781265.6 1377.922 CP2
447 3132867 781278.6 1379.194 CP2
448 3132896 781267 1377.013 CP2
449 3132872 781271.6 1379.014 CP2
450 3132900 781277.9 1378.741 CP2
451 3132951 781247.7 1377.172 CP2
452 3132926 781250.9 1377.694 CP2
453 3132935 781246 1377.668 CP2
454 3132952 781249.9 1377.664 CP2
CHAPTER II
FLY LEVELLING
3.1 General
Levelling is a branch of surveying whose objectives are to:
a) Find the elevations of given points with respect to a given or assumed datum.
The first operation is required to enable the works to be designed while the second operation
is required in the setting out of all kinds of engineering works. Levelling deals with
measurements in a vertical plane. To provide vertical control in topographic map, the
elevations of the relevant points must be known so that complete topography of the area can
be explored. Levelling was performed to determine the elevation (relative height from a
given datum). Fly levelling was done on the camp area.
A. Differential levelling
It is the method of direct levelling, the object of which is solely to determine the difference
in elevation of two points regardless of the horizontal positions of the points with respect of
each other. This type of levelling is also known as fly levelling.
26
B. Profile levelling
It is the method of direct levelling the object of which is to determine the elevations of
points at measured intervals along a given line in order to obtain a profile of the surface
along that line.
C. Cross-sectioning
Cross-sectioning or cross levelling is the process of taking levels on each side of main line at
right angles to that line, in order to determine a vertical cross-section of the surface of the
ground, or of underlying strata, or of both.
D. Reciprocal Levelling
It is the method of levelling in which the difference in elevation between two points is
accurately determined by two sets of reciprocal observations when it is not possible to set up
the level between the two points. E. Indirect levelling:
Indirect method or trigonometric levelling is the process of levelling in which the elevations
of points are computed from the vertical angles and horizontal distance measured in the
field, just as the length of any side in any triangle can be computed from proper
trigonometric relations.
a) Setting up the level: The operation of setting up includes fixing the instrument on the
stand and leveling the instrument approximately.
b) Leveling: Accurate levelling is done with the help of foot screws and with reference
to the plate bubble. The purpose of levelling is to make the vertical axis truly
vertical. It can be done by adjusting the screws.
c) Removal of parallax: Parallax is a condition when the image formed by the objective
is not in the plane of the cross hairs. Parallax is eliminated by focusing the eyepiece
for distinct vision of the cross hairs and by focusing the objective/object glass to
bring the sharp image of the object in the plane of cross hairs and to eliminate the
parallax.
27
3.3 Permanent adjustment of level
To check for the permanent adjustments of level two-peg test method should be performed.
Two staffs were placed at A and B of known length (about 20 m). First, the instrument was
setup at the middle point C and both staff readings were taken. Then the machine was held
near A and both staff readings (Top, Middle, and Bottom) were taken again. Then
computation was made as follows in order to check whether the adjustment was required or
not. The precision obtained was lesser than that of required precision i.e. 1 in 20000. So,
for the permanent adjustment of level the backward and forward distance were kept equal
during the levelling operation.
3.4 Booking of RL
A Level Book is used for booking of RL of various points in a systematic way. There are two
methods for booking of RL:
In the Survey Camp, we adopt Rise & Fall method for booking of RL.
Rise & Fall Method
The difference of level between two consecutive points is determined by comparing each forward
staff reading with the staff reading at the immediately preceding point.
Arithmetic Check:
B.S. – F.S. = Rise –Fall = Last R.L. – First R.L
Height of Instrument Method Arithmetic
Check:
B.S. – F.S. = Last R.L. – First R.L.
28
3.5 Instrument used
1. Level Machine
2. 2 Staff
3. Tape
4. Hammer
5. Marker
29
OXFORD COLLEGE OF ENGINEERING AND MANAGEMENT
Gaindakot-2, Nawalparasi (Ba. Su. Pu.)
FLY LEVELLING SHEET
GROUP: --------------------------- DATE: ----------------
Forward Observations
BACK SIGHT FORE SIGHT Horiz.
S= Distance
STN. RISE FALL RL REMARKS
S1=TB (S1+S2) (100S)
T M B Avg. T M B Avg. S2=T-B
S2 1.992 1.921 1.852 1.9217 0.14 0.864 0.795 0.727 0.7953 0 0.6203 0.0000 0.14 14.000 1368.620
S3 1.505 1.43 1.355 1.43 0.15 1.05 0.98 0.91 0.98 0.14 0.9417 0.0000 0.29 29.000 1369.562
S4 1.694 1.619 1.544 1.619 0.15 0.945 0.87 0.795 0.87 0.15 0.5600 0.0000 0.3 30.000 1370.122
S5 1.784 1.761 1.737 1.7607 0.047 0.8 0.726 0.653 0.7263 0.147 0.8927 0.0000 0.194 19.400 1371.015
S6 1.544 1.518 1.492 1.518 0.052 0.986 0.961 0.936 0.961 0.05 0.7997 0.0000 0.102 10.200 1371.814
30
S7 1.621 1.592 1.564 1.5923 0.057 0.745 0.72 0.695 0.72 0.05 0.7980 0.0000 0.107 10.700 1372.612
S8 1.893 1.868 1.843 1.868 0.05 0.613 0.584 0.554 0.5837 0.059 1.0087 0.0000 0.109 10.900 1373.621
S9 1.915 1.88 1.845 1.88 0.07 0.903 0.879 0.855 0.879 0.048 0.9890 0.0000 0.118 11.800 1374.610
S10 1.599 1.567 1.534 1.5667 0.065 0.939 0.906 0.873 0.906 0.066 0.9740 0.0000 0.131 13.100 1375.584
S11 0 0 0.683 0.6525 0.622 0.6525 0.061 0.9142 0.0000 0.061 6.100 1376.498 TBM
Calculation Check:
Loop 1 Forward Observations
⅀BS-⅀FS = 8.498 Last RL-First RL = 8.498
⅀Rise-⅀Fall = 8.498
Remarks
31
S1 0.692 0.662 0.632 0.662 0.06 0.000 1376.498 TBM
S2 0.855 0.83 0.805 0.83 0.05 1.501 1.472 1.443 1.472 0.058 0.0000 0.8100 0.108 10.800 1375.688
S3 0.846 0.819 0.791 0.8187 0.055 1.605 1.58 1.555 1.58 0.05 0.0000 0.7500 0.105 10.500 1374.938
S4 0.896 0.872 0.848 0.872 0.048 1.731 1.704 1.677 1.704 0.054 0.0000 0.8853 0.102 10.200 1374.052
S5 0.646 0.621 0.597 0.6213 0.049 1.634 1.608 1.584 1.6087 0.05 0.0000 0.7367 0.099 9.900 1373.316
S6 0.694 0.654 0.614 0.654 0.08 1.341 1.316 1.292 1.3163 0.049 0.0000 0.6950 0.129 12.900 1372.621
S7 0.921 0.87 0.818 0.8697 0.103 1.755 1.715 1.675 1.715 0.08 0.0000 1.0610 0.183 18.300 1371.560
S8 0.784 0.704 0.625 0.7043 0.159 1.812 1.759 1.707 1.7593 0.105 0.0000 0.8897 0.264 26.400 1370.670
S9 1.146 1.099 1.051 1.0987 0.095 1.718 1.637 1.557 1.6373 0.161 0.0000 0.9330 0.256 25.600 1369.737
S10 1.186 1.146 1.106 1.146 0.08 1.355 1.305 1.255 1.305 0.1 0.0000 0.2063 0.18 18.000 1369.531
S11 0.716 0.666 0.617 0.6663 0.099 1.647 1.607 1.567 1.607 0.08 0.0000 0.4610 0.179 17.900 1369.070
S12 0 0 1.761 1.711 1.663 1.7117 0.098 0.0000 1.0453 0.098 9.800 1368.024 BM
Calculation Check:
Loop 1 Backward Observations
32
⅀BS-⅀FS = -8.473 Last RL-First RL = -8.473
⅀Rise-⅀Fall = -8.473
Remarks
Observational Check:
Error in RL in measurement= RL of starting point-RL of the same point at closing = -0.024 Total
Distance of FS and BS = 340.1 m = 0.3401 km Permissible error = ± 14.58
mm Re-
marks:
Forward Observations
BACK SIGHT FORE SIGHT Horiz.
S=
STN. RISE FALL Distance RL REMARKS
S1=TB (S1+S2)
T M B Avg. T M B Avg. S2=T-B (100S)
S2 1.511 1.486 1.461 1.486 0.05 0.691 0.661 0.631 0.661 0 0.7150 0.0000 0.05 5.000 1377.213
S3 1.543 1.493 1.493 1.5097 0.05 0.783 0.757 0.731 0.757 0.052 0.7290 0.0000 0.102 10.200 1377.942
S4 1.525 1.505 1.485 1.505 0.04 0.705 0.68 0.656 0.6803 0.049 0.8293 0.0000 0.089 8.900 1378.771
S5 1.527 1.502 1.477 1.502 0.05 0.746 0.726 0.706 0.726 0.04 0.7790 0.0000 0.09 9.000 1379.550
S6 1.534 1.509 1.484 1.509 0.05 1.024 0.998 0.972 0.998 0.052 0.5040 0.0000 0.102 10.200 1380.054
S7 1.361 1.306 1.251 1.306 0.11 1.18 1.155 1.13 1.155 0.05 0.3540 0.0000 0.16 16.000 1380.408
33
S8 1.448 1.362 1.276 1.362 0.172 0.979 0.903 0.827 0.903 0.152 0.4030 0.0000 0.324 32.400 1380.811
S9 1.256 1.181 1.106 1.181 0.15 0.99 0.905 0.82 0.905 0.17 0.4570 0.0000 0.32 32.000 1381.268
S10 1.415 1.357 1.299 1.357 0.116 1.034 0.959 0.884 0.959 0.15 0.2220 0.0000 0.266 26.600 1381.490
S11 0.792 0.773 0.754 0.773 0.038 0.928 0.87 0.812 0.87 0.116 0.4870 0.0000 0.154 15.400 1381.977
S12 0.932 0.898 0.874 0.9013 0.058 1.576 1.556 1.536 1.556 0.04 0.0000 0.7830 0.098 9.800 1381.194
S13 1.171 1.111 1.051 1.111 0.12 1.518 1.493 1.469 1.4933 0.049 0.0000 0.5920 0.169 16.900 1380.602
S14 1.096 1.061 1.026 1.061 0.07 1.579 1.519 1.459 1.519 0.12 0.0000 0.4080 0.19 19.000 1380.194
S15 0.709 0.68 0.65 0.6797 0.059 1.336 1.301 1.266 1.301 0.07 0.0000 0.2400 0.129 12.900 1379.954
S16 1.028 1.007 0.986 1.007 0.042 1.815 1.785 1.755 1.785 0.06 0.0000 1.1053 0.102 10.200 1378.849
S17 0 0 1.063 1.042 1.021 1.042 0.042 0.0000 0.0350 0.042 4.200 1378.814 SBM
Calculation Check:
Loop 1 Forward Observations
⅀BS-⅀FS = 2.316 Last RL-First RL = 2.316
⅀Rise-⅀Fall = 2.316
Re-
marks:
Forward Observations
STN. BACK SIGHT FORE SIGHT RISE FALL S= Horiz. RL REMARKS
34
S1=TB Distance
T M B Avg. T M B Avg. S2=T-B (S1+S2)
(100S)
S2 1.864 1.831 1.799 1.8313 0.065 1.028 1.007 0.986 1.007 0.042 0.0350 0.0000 0.107 10.700 1378.854
S3 1.697 1.603 1.509 1.603 0.188 0.759 0.725 0.691 0.725 0.068 1.1063 0.0000 0.256 25.600 1379.960
S4 1.556 1.531 1.506 1.531 0.05 1.047 0.952 0.857 0.952 0.19 0.6510 0.0000 0.24 24.000 1380.611
S5 1.721 1.671 1.621 1.671 0.1 0.767 0.7425 0.718 0.7425 0.049 0.7885 0.0000 0.149 14.900 1381.400
S6 0.921 0.881 0.701 0.8343 0.22 1.478 1.428 1.378 1.428 0.1 0.2430 0.0000 0.32 32.000 1381.643
S7 1.14 1.074 1.009 1.0743 0.131 1.39 1.28 1.17 1.28 0.22 0.0000 0.4457 0.351 35.100 1381.197
S8 0.943 0.872 0.801 0.872 0.142 1.294 1.23 1.165 1.2297 0.129 0.0000 0.1553 0.271 27.100 1381.042
S9 1.151 1.12 1.09 1.1203 0.061 1.444 1.374 1.304 1.374 0.14 0.0000 0.5020 0.201 20.100 1380.540
S10 0.701 0.67 0.6385 0.6698 0.0625 1.556 1.5265 1.497 1.5265 0.059 0.4062 0.1215 12.150 1380.133
S11 0.664 0.637 0.61 0.637 0.054 1.502 1.4715 1.4405 1.4713 0.0615 0.8015 0.1155 11.550 1379.332
S12 0.776 0.748 0.72 0.748 0.056 1.664 1.637 1.61 1.637 0.054 1.0000 0.11 11.000 1378.332
S13 0.601 0.565 0.529 0.565 0.072 1.592 1.564 1.537 1.5643 0.055 0.0000 0.8163 0.127 12.700 1377.516
S14 0 0 1.6 1.563 1.525 1.5627 0.075 0.0000 0.9977 0.075 7.500 1376.518 TBM
Calculation Check:
35
Loop 1 Forward Observations
⅀BS-⅀FS = -2.301
⅀Rise-⅀Fall = -2.301
Re-
marks:
Observational Check:
Error in RL in measurement= RL of starting point-RL of the same point at closing = -0.020 Total Distance of
FS and BS = #### m = 0.249 km Permissible error = ± 12.46 mm
Remarks: Hence the error is in between permissible error
Forward Observations
BACK SIGHT FORE SIGHT Horiz.
S=
STN. RISE FALL Distance RL REMARKS
S1=TB (S1+S2)
T M B Avg. T M B Avg. S2=T-B (100S)
S2 1.759 1.726 1.726 1.737 0.033 1.028 1.007 0.986 1.007 0.042 0.0350 0.0000 0.075 7.500 1378.854
S3 1.546 1.471 1.396 1.471 0.15 0.652 0.619 0.586 0.619 0.066 1.1180 0.0000 0.216 21.600 1379.972
S4 1.402 1.362 1.322 1.362 0.08 1.015 0.94 0.865 0.94 0.15 0.5310 0.0000 0.23 23.000 1380.503
36
S5 1.829 1.801 1.774 1.8013 0.055 0.712 0.672 0.632 0.672 0.08 0.6900 0.0000 0.135 13.500 1381.193
S6 1.528 1.509 1.49 1.509 0.038 0.883 0.855 0.8275 0.8552 0.0555 0.9462 0.0000 0.0935 9.350 1382.139
S7 0.831 0.781 0.731 0.781 0.1 0.995 0.978 0.961 0.978 0.034 0.5310 0.0000 0.134 13.400 1382.670
S8 1.104 1.004 0.904 1.004 0.2 1.779 1.729 1.679 1.729 0.1 0.0000 0.9480 0.3 30.000 1381.722
S9 1.096 1.064 1.032 1.064 0.064 1.549 1.449 1.349 1.449 0.2 0.0000 0.4450 0.264 26.400 1381.277
Calculation Check:
Loop 1 Forward Observations
⅀BS-⅀FS = 1.991166667
Last RL-First RL = 1.991 ⅀Rise-⅀Fall = 1.991
Re-
marks:
Forward Observations
BACK SIGHT FORE SIGHT Horiz.
S=
STN. RISE FALL Distance RL REMARKS
S1=TB (S1+S2)
T M B Avg. T M B Avg. S2=T-B (100S)
37
S2 1.58 1.47 1.36 1.47 0.22 1.096 1.064 1.032 1.064 0.064 0.4637 0.0000 0.284 28.400 1381.274
S3 1.901 1.856 1.811 1.856 0.09 1 0.89 0.78 0.89 0.22 0.5800 0.0000 0.31 31.000 1381.854
S4 0.768 0.738 0.708 0.738 0.06 1.086 1.04 0.994 1.04 0.092 0.8160 0.0000 0.152 15.200 1382.670
S5 0.691 0.667 0.642 0.6667 0.049 1.966 1.937 1.908 1.937 0.058 0.0000 1.1990 0.107 10.700 1381.471
S6 1.215 1.155 1.095 1.155 0.12 1.557 1.531 1.506 1.5313 0.051 0.0000 0.8647 0.171 17.100 1380.606
S7 1.171 1.137 1.103 1.137 0.068 1.641 1.553 1.492 1.562 0.149 0.0000 0.4070 0.217 21.700 1380.199
S8 0.769 0.735 0.701 0.735 0.068 1.416 1.38 1.344 1.38 0.072 0.0000 0.2430 0.14 14.000 1379.956
S9 1.122 1.101 1.08 1.101 0.042 1.887 1.853 1.82 1.8533 0.067 0.0000 1.1183 0.109 10.900 1378.838
S10 0 0 1.146 1.125 1.103 1.1247 0.043 0.0237 0.043 4.300 1378.814 SBM
Calculation Check:
Loop 1 Forward Observations
⅀BS-⅀FS = -1.996 Last RL-First RL = -1.996
⅀Rise-⅀Fall = -1.996
Re-
marks:
Observational Check:
38
Error in RL in measurement= RL of starting point-RL of the same point at closing = 0.005 Total Distance of FS
and BS = #### m = 0.159 km Permissible error = ± 9.978 mm
Remarks: Hence the error is in between permissible error
39
CHAPTER IV
ROAD ALIGNMENT SURVEY
4.1 Geology, Hydrology and Soil
This part of the Survey Camp dealt with the road alignment survey done at Dhampus village
area. The duration of the survey was one day. The altitude of the speculated site was about
1650 meters from the sea level. The area where the road alignment survey was done was
grassy land with terrain topography where large amount of cutting filling was required.
4.2Technical Specifications
While performing the road alignment survey, the following norms were strictly followed:
a. The road had to be designed for a width of 5m and length of as given in site.
b. If the external deflection angle at the I.P. of the road is less than 30º, curves
need not be fitted.
c. Simple horizontal curves had to be laid out where the road changed its
direction, determining and pegging three points on the curve - the beginning
of the curve, the middle point of the curve and the end point of the curve along
the centerline of the road.
i. The cross section of the road had to be plotted on a scale of 1:100 (both
vertical and horizontal).
40
j. The amount of cutting and filling required for the road construction had to be
determined from the L-Section and the cross sections. However, the volume of
cutting had to be roughly equal to the volume of filling.
a) Total Station
b) Staffs
c) Ranging rods
d) Tapes
e) Hammer
4.4 Methodology
4.4.1Reconnaissance
The reconnaissance survey was carried out from the point nearer to hostel building. Pegging
was done at different places and the possible I.P.s were also marked and pegged. The
condition of intervisibility was checked at each step.
41
Fig4.4.2 a.: Simple Circular Curve
After performing the necessary calculations, the points, the points BC and EC were fixed at
a distance equal to the tangent length from IP using a tape. Then the line bisecting the
internal angle at the IP was found out with the help of a theodolite. And on this line, a peg
was driven at point M at a distance equal to the apex distance from the IP. Then, the
necessary calculations were done, thus giving the required numerical values of the different
parameters. 4.4.3 Longitudinal Section
The L-Section of the road is required to give the road engineer an idea about the nature of
the ground and the variation in the elevations of the different points along the length of the
road and also to determine the amount of cutting and filling required at the road site for
maintaining a gentle slope. In order to obtain the data for L-Section, staff readings were
taken at points at 20 m intervals along the centreline of the road with the help of a level by
the method of fly levelling. And thus, after performing the necessary calculations, the level
was transferred to all those points with respect to the R.L. of the given B.M. Then finally the
L-Section of the road was plotted on a graph paper on a vertical scale of 1:200 and a
horizontal scale of 1:1000. 4.4.4 Cross-section
Cross sections at different points are drawn perpendicular to the longitudinal section of the
road on either side of its centreline, 10m on each side in order to present the lateral outline
of the ground. Cross sections are also equally useful in determining the amount of cut and
42
fill required for the road construction. Cross sections were taken at 20m intervals along the
centreline of the road and also at points where there was a sharp change in the elevation.
While doing so, the horizontal distances of the different points from the centreline were
measured with the help of a tape and the vertical heights with a measuring staff. The R.L.
was transferred to all the points by performing the necessary calculations and finally, the
cross sections at different sections were plotted on a graph paper on a scale of 1:100 both
vertical and horizontal.
43
ii. By successive bisection of arcs.
iii. By offsets from the tangents. iv. By offsets from the chords produced.
v. Instrument method.
The following are instrument method used for setting out a circular curve:
Calculations and the sample drawings are attached after the comments and conclusions.
44
OXFORD COLLEGE OF ENGINEERING AND MANAGEMENT
Gaindakot-2, Nawalparasi (Ba. Su. Pu.)
DETAILING USING TOTAL STATION
GROUP: ------------------ Measurement Sheet for HD/VD or Coordinate system
Sighted To
INSTRUMENT
HD / VD Method or Coordinate System
IP1 1380.8
IP1 1.394 0+000 0 0 0 0.0 81 41 49.5 81.7 29.5 29.525 0.0 1.8 2 3133020.9 781024.3 1382.5
IP1 R2 3 55 6 3.9 85 36 54.0 85.6 29.5 29.4 2.0 1.7 2 3133050.3 781026.3 1381.0
R4 7 46 1 7.8 89 27 50.4 89.5 29.5 29.193 4.0 1.8 2 3133079.5 781030.2 1381.1
R6 11 34 5 11.6 93 15 54.0 93.3 29.7 29.05 5.9 1.6 2 3133108.5 781036.2 1380.8
R8 15 9 3 15.2 96 50 52.8 96.8 29.8 28.773 7.8 0.6 2 3133137.3 781044.0 1379.8
R10 18 54 40 18.9 100 36 28.8 100.6 30.1 28.473 9.8 0.6 2 3133165.8 781053.7 1379.9
0+005 0 0 0 0.0 81 41 49.5 81.7 24.5 24.514 0.0 1.9 2 3133190.3 781053.7 1381.1
R2 4 23 56 4.4 86 5 45.6 86.1 24.7 24.654 1.9 1.7 2 3133214.9 781055.6 1381.0
R4 8 50 4 8.8 90 31 51.6 90.5 24.9 24.651 3.8 0.6 2 3133239.6 781059.5 1379.9
R6 13 5 38 13.1 94 47 27.6 94.8 25.5 24.85 5.8 0.6 2 3133264.4 781065.2 1379.9
R8 17 27 37 17.5 99 9 25.2 99.2 26.0 24.847 7.8 0.6 2 3133289.3 781073.1 1379.9
R10 21 26 25 21.4 103 8 13.2 103.1 26.5 24.7 9.7 0.6 2 3133314.0 781082.8 1379.8
0+010 0 0 0 0.0 81 41 49.5 81.7 14.6 14.573 0.0 1.1 2 3133328.6 781082.8 1380.3
45
L2 7 49 31 7.8 73 52 19.2 73.9 14.3 14.133 1.9 1.0 2 3133342.7 781084.7 1380.3
L4 16 0 16 16.0 65 41 34.8 65.7 14.1 13.552 3.9 1.0 2 3133356.2 781088.6 1380.3
L6 24 55 47 24.9 56 46 1.2 56.8 14.3 12.992 6.0 1.0 2 3133369.2 781094.6 1380.3
L8 33 10 54 33.2 48 30 54.0 48.5 14.5 12.147 7.9 1.0 2 3133381.4 781102.6 1380.3
L10 41 14 31 41.2 40 27 18.0 40.5 14.9 11.169 9.8 1.0 2 3133392.5 781112.4 1380.2
R2 8 17 39 8.3 89 59 27.6 90.0 14.5 14.315 2.1 0.6 2 3133406.9 781114.5 1379.8
R4 16 4 48 16.1 97 46 37.2 97.8 14.5 13.927 4.0 0.6 2 3133420.8 781118.5 1379.8
R6 24 3 13 24.1 105 45 3.6 105.8 14.9 13.63 6.1 0.6 2 3133434.4 781124.5 1379.8
R8 31 5 10 31.1 112 46 58.8 112.8 15.3 13.096 7.9 0.6 2 3133447.5 781132.4 1379.8
R10 81 41 49.5 81.7 0 0.0 3133447.5 781132.4 1379.3
0+015 0 0 37 0.0 81 41 49.5 81.7 9.6 9.62 0.0 0.7 2 3133457.1 781132.4 1379.9
L2 11 32 59 11.5 81 41 49.5 70.1 9.3 9.1587 1.9 0.6 2 3133466.3 781134.3 1379.8
L4 0.0 81 41 49.5 81.7 0 0.0 3133466.3 781134.3 1379.3
L6 0.0 81 41 49.5 81.7 0 0.0 3133466.3 781134.3 1379.3
L8 0.0 81 41 49.5 81.7 0 0.0 3133466.3 781134.3 1379.3
L10 0.0 81 41 49.5 81.7 0 0.0 3133466.3 781134.3 1379.3
R2 12 16 38 12.3 93 58 26.4 94.0 9.9 9.7049 2.1 0.6 2 3133476.0 781136.4 1379.9
R4 22 41 14 22.7 104 23 2.4 104.4 10.6 9.8204 4.1 0.6 2 3133485.8 781140.5 1379.8
R6 31 16 56 31.3 112 58 44.4 113.0 11.8 10.121 6.1 0.6 2 3133495.9 781146.7 1379.9
R8 38 25 5 38.4 120 6 54.0 120.1 13.1 10.281 8.2 0.3 2 3133506.2 781154.8 1379.6
R10 0.0 81 41 49.5 81.7 0 0.0 2 3133506.2 781154.8 1379.3
0+020 0 0 59 0.0 81 41 49.5 81.7 4.9 4.944 0.0 0.6 2 3133511.2 781154.8 1379.8 BC1
L2 22 31 54 22.5 59 9 54.0 59.2 4.8 4.465 1.9 0.7 2 3133515.6 781156.7 1379.9
46
L4 43 36 22 43.6 38 5 27.6 38.1 5.3 3.824 3.6 0.7 2 3133519.5 781160.3 1380.0
L6 60 5 59 60.1 21 35 49.2 21.6 6.6 3.2761 5.7 0.5 2 3133522.7 781166.0 1379.8
L8 72 36 3 72.6 9 5 45.6 9.1 8.0 2.3916 7.6 0.7 2 3133525.1 781173.7 1379.9
L10 79 18 52 79.3 2 22 58.8 2.4 9.7 1.8056 9.6 0.7 2 3133526.9 781183.2 1380.0
R2 19 30 21 19.5 101 12 10.8 101.2 6.0 5.6754 2.0 0.7 2 3133532.6 781185.2 1379.9
R4 28 54 27 28.9 110 36 18.0 110.6 8.2 7.1415 3.9 0.7 2 3133539.7 781189.2 1379.9
R6 34 17 51 34.3 115 59 42.0 116.0 10.3 8.4992 5.8 0.8 2 3133548.2 781195.0 1380.0
R8 37 41 49 37.7 119 23 38.4 119.4 12.2 9.6525 7.5 0.6 2 3133557.9 781202.4 1379.9
R10 41 49 50 41.8 123 31 49.5 123.5 14.3 10.657 9.5 0.2 2 3133568.6 781212.0 1379.5
0+024.6 1 16 53 1.3 82 58 42.5 83.0 4.7 4.6748 0.1 0.1 2 3133573.2 781212.1 1379.4
L2 27 26 53 27.4 55 31 48.0 55.5 4.4 3.9428 2.0 0.1 2 3133577.2 781214.1 1379.3
L4 50 55 53 50.9 4 35 56.4 4.6 5.2 3.3006 4.1 0.1 2 3133580.5 781218.2 1379.4
L6 62 36 41 62.6 301 59 16.8 302.0 6.2 2.8572 5.5 0.1 2 3133583.3 781223.7 1379.3
L8 73 9 28 73.2 228 49 48.0 228.8 7.8 2.2724 7.5 0.1 2 3133585.6 781231.2 1379.3
L10 81 47 20 81.8 147 2 27.6 147.0 9.6 1.3664 9.5 0.1 2 3133587.0 781240.7 1379.3
R2 23 0 45 23.0 105 59 27.6 106.0 5.5 5.1 2.2 0.1 2 3133592.1 781242.9 1379.3
R4 35 0 24 35.0 117 59 6.0 118.0 7.1 5.7991 4.1 0.1 2 3133597.9 781246.9 1379.3
R6 40 53 41 40.9 123 52 22.8 123.9 9.0 6.8176 5.9 0.1 2 3133604.7 781252.8 1379.3
R8 45 56 9 45.9 128 54 50.4 128.9 10.7 7.4324 7.7 0.0 2 3133612.1 781260.5 1379.3
R10 48 15 12 48.3 131 13 51.6 131.2 12.7 8.4881 9.5 0.1 2 3133620.6 781270.0 1379.3
IP2 1.454 0+025 15 18 59 15.3 97 0 48.5 97.0 16.1 15.514 4.2 1.8 2 3133636.1 781274.3 1381.0 IP1
L2 4 21 18 4.4 92 39 28.8 92.7 16.4 16.307 1.2 1.7 2 3133652.4 781275.5 1381.0
L4 11 30 55 11.5 85 29 52.8 85.5 17.1 16.731 3.4 1.7 2 3133669.2 781278.9 1381.0
47
L6 17 35 1 17.6 79 25 40.8 79.4 17.9 17.019 5.4 1.7 2 3133686.2 781284.3 1381.0
L8 23 8 43 23.1 73 52 4.8 73.9 17.8 16.4 7.0 1.7 2 3133702.6 781291.3 1381.0
L10 27 52 50 27.9 69 7 55.2 69.1 18.8 16.65 8.8 1.7 2 3133719.2 781300.1 1381.0
R2 9 47 31 9.8 106 48 18.0 106.8 20.0 19.754 3.4 1.7 2 3133739.0 781303.5 1381.0
R4 17 22 41 17.4 114 23 27.6 114.4 16.1 15.341 4.8 1.7 2 3133754.3 781308.3 1381.0
R6 24 26 18 24.4 121 27 3.6 121.5 16.3 14.816 6.7 1.7 2 3133769.1 781315.1 1381.0
R8 31 0 56 31.0 128 1 44.4 128.0 17.3 14.833 8.9 1.7 2 3133784.0 781324.0 1381.0
R10 0.0 97 0 57.6 97.0 0 0.0 2 3133784.0 781324.0 1379.3
IP2 1.454 0+029.3 2 31 35 2.5 84 13 24.5 84.2 15.6 15.535 0.7 1.8 2 3133799.5 781324.7 1381.1
L2 4 32 22 4.5 79 41 2.4 79.7 15.9 15.86 1.3 1.7 2 3133815.4 781325.9 1381.0
L4 11 42 4 11.7 81 41 49.5 72.5 16.6 16.259 3.4 1.7 2 3133831.6 781329.3 1380.9
L6 17 55 54 17.9 81 41 49.5 66.3 17.3 16.468 5.3 1.7 2 3133848.1 781334.6 1381.0
L8 23 38 19 23.6 81 41 49.5 60.6 18.5 16.927 7.4 1.7 2 3133865.0 781342.0 1381.0
L10 27 24 8 27.4 81 41 49.5 56.8 18.5 16.404 8.5 1.7 2 3133881.4 781350.5 1381.0
R2 10 8 36 10.1 91 50 25.5 91.8 18.5 18.188 3.3 1.7 2 3133899.6 781353.8 1381.0
R4 18 10 17 18.2 81 41 49.5 99.9 15.5 14.742 4.8 1.7 2 3133914.4 781358.6 1381.0
R6 25 31 57 25.5 81 41 49.5 107.2 16.0 14.435 6.9 1.7 2 3133928.8 781365.5 1381.0
R8 31 59 13 32.0 81 41 49.5 113.7 16.6 14.087 8.8 1.7 2 3133942.9 781374.3 1381.0
R10 0.0 81 41 49.5 81.7 0 0.0 2 3133942.9 781374.3 1379.3
IP2 1.454 0+030 0 0 15 0.0 142 20 49.5 142.3 8.7 8.722 0.0 1.3 2 3133951.6 781374.3 1380.6 EC1
L2 13 32 45 13.5 128 42 4.7 128.7 8.8 8.562 2.1 1.3 2 3133960.2 781376.4 1380.6
L4 25 42 36 25.7 116 32 13.6 116.5 9.4 8.5082 4.1 1.4 2 3133968.7 781380.5 1380.7
L6 36 0 59 36.0 106 13 50.5 106.2 10.5 8.5107 6.2 1.3 2 3133977.2 781386.7 1380.6
48
L8 44 2 50 44.0 98 11 59.6 98.2 11.9 8.5727 8.3 0.3 2 3133985.8 781395.0 1379.6
L10 50 27 11 50.5 91 47 38.5 91.8 13.8 8.8012 10.7 0.7 2 3133994.6 781405.6 1380.0
R2 15 23 52 15.4 157 44 41.6 157.7 8.9 8.5767 2.4 1.3 2 3134003.1 781408.0 1380.6
R4 23 42 58 23.7 166 3 47.5 166.1 9.5 8.6794 3.8 1.3 2 3134011.8 781411.8 1380.6
R6 0.0 142 20 49.5 142.3 0 0.0 2 3134011.8 781411.8 1379.3
R8 0.0 142 20 49.5 142.3 0 0.0 2 3134011.8 781411.8 1379.3
R10 0.0 142 20 49.5 142.3 0 0.0 2 3134011.8 781411.8 1379.3
Ip2 1.454 0+034.09 0 0 15 0.0 142 20 49.5 142.3 5.7 5.664 0.0 1.1 2 3134017.5 781411.8 1380.4
L2 18 25 11 18.4 123 55 38.6 123.9 6.2 5.8757 2.0 0.7 2 3134023.4 781413.8 1380.0
L4 33 26 39 33.4 108 54 10.4 108.9 7.4 6.1547 4.1 0.7 2 3134029.5 781417.8 1379.9
L6 43 16 16 43.3 99 4 33.6 99.1 8.9 6.5145 6.1 0.6 2 3134036.0 781424.0 1379.9
L8 48 53 51 48.9 93 26 58.6 93.4 10.6 6.9541 8.0 0.6 2 3134043.0 781431.9 1379.9
L10 54 6 54 54.1 88 13 55.6 88.2 12.5 7.3229 10.1 0.7 2 3134050.3 781442.0 1380.0
R2 21 29 41 21.5 163 50 30.5 163.8 5.6 5.2077 2.1 1.4 2 3134055.5 781444.1 1380.7
R4 40 1 52 40.0 182 22 41.5 222.4 6.2 4.7465 4.0 1.4 2 3134060.3 781448.1 1380.7
R6 0.0 142 20 49.5 142.3 0 0.0 2 3134060.3 781448.1 1379.3
R8 0.0 142 20 49.5 142.3 0 0.0 2 3134060.3 781448.1 1379.3
R10 0.0 142 20 49.5 142.3 0 0.0 2 3134060.3 781448.1 1379.3
IP2 1.454 0+035 7 23 20 7.4 149 50 49.5 149.8 6.1 6.0345 0.8 -0.6 2 3134066.3 781448.9 1378.7 BC2
L2 22 24 37 22.4 127 25 46.2 127.4 7.3 6.7515 2.8 -0.7 2 3134073.0 781451.7 1378.5
L4 32 22 23 32.4 117 28 0.1 117.5 8.9 7.4838 4.7 -0.7 2 3134080.5 781456.4 1378.6
L6 39 3 50 39.1 110 46 33.2 110.8 10.6 8.2093 6.7 -0.7 2 3134088.7 781463.1 1378.6
L8 38 54 32 38.9 110 55 51.2 110.9 14.2 11.041 8.9 -0.6 2 3134099.8 781472.0 1378.6
49
L10 0.0 149 50 23.3 149.8 0 0.0 2 3134099.8 781472.0 1379.2
R2 12 29 2 12.5 162 19 25.3 162.3 5.4 5.2772 1.2 -0.7 2 3134105.0 781473.1 1378.5
R4 33 32 36 33.5 183 22 59.2 183.4 5.6 4.6641 3.1 -0.7 2 3134109.7 781476.2 1378.5
R6 0.0 149 50 23.3 149.8 0 0.0 2 3134109.7 781476.2 1379.2
R8 0.0 149 50 23.3 149.8 0 0.0 2 3134109.7 781476.2 1379.2
R10 0.0 149 50 23.3 149.8 0 0.0 2 3134109.7 781476.2 1379.2
IP2 1.454 0+036.926 O 0 6 0.0 142 20 49.6 142.3 8.7 8.699 0.0 -0.5 2 3134118.4 781476.2 1378.8
L2 11 49 40 11.8 130 31 9.5 130.5 9.3 9.1329 1.9 -0.7 2 3134127.5 781478.1 1378.6
L4 19 47 18 19.8 122 33 31.7 122.6 11.2 10.507 3.8 -0.5 2 3134138.1 781481.9 1378.7
L6 29 23 14 29.4 112 57 35.6 113.0 14.2 12.365 7.0 -0.8 2 3134150.4 781488.9 1378.4
L8 31 3 0 31.1 111 17 49.6 111.3 16.3 14.002 8.4 -0.9 2 3134164.4 781497.3 1378.3
L10 0.0 142 20 49.6 142.3 0 0.0 2 3134164.4 781497.3 1379.2
R2 14 14 23 14.2 156 35 12.5 156.6 8.0 7.7358 2.0 -0.7 2 3134172.2 781499.3 1378.6
R4 25 44 18 25.7 168 5 7.4 168.1 8.1 7.2838 3.5 -0.7 2 3134179.4 781502.8 1378.6
R6 0.0 142 20 49.6 142.3 0 0.0 2 3134179.4 781502.8 1379.2
R8 0.0 142 20 49.6 142.3 0 0.0 2 3134179.4 781502.8 1379.2
R10 0.0 142 20 49.6 142.3 0 0.0 2 3134179.4 781502.8 1379.2
IP3 1.364 0+039.943 4 37 26 4.6 79 56 15.5 79.9 25.1 25.037 2.0 2.4 2 3134204.5 781504.8 1381.5
L2 8 43 49 8.7 71 12 26.5 71.2 24.2 23.929 3.7 2.3 2 3134228.4 781508.5 1381.4
L4 13 20 38 13.3 66 35 37.5 66.6 24.0 23.315 5.5 2.9 2 3134251.7 781514.0 1382.0
L6 20 29 59 20.5 59 26 16.5 59.4 23.2 21.73 8.1 2.4 2 3134273.4 781522.1 1381.5
L8 25 54 39 25.9 54 1 36.5 54.0 23.2 20.829 10.1 2.5 2 3134294.3 781532.3 1381.6
L10 0.0 79 56 15.5 79.9 0 0.0 2 3134294.3 781532.3 1379.1
R2 3 47 45 3.8 83 44 0.5 83.7 27.4 27.298 1.8 2.3 2 3134321.6 781534.1 1381.4
50
R4 0.0 79 56 15.5 79.9 0 0.0 2 3134321.6 781534.1 1379.1
R6 0.0 79 56 15.5 79.9 0 0.0 2 3134321.6 781534.1 1379.1
R8 0.0 79 56 15.5 79.9 0 0.0 2 3134321.6 781534.1 1379.1
R10 0.0 79 56 15.5 79.9 0 0.0 2 3134321.6 781534.1 1379.1
IP3(P14) 1.364 0+042.004 0 0 10 0.0 75 18 49.5 75.3 15.6 15.578 0.0 0.9 2 3134337.2 781534.1 1380.0
L2 7 24 6 7.4 67 54 40.7 67.9 14.6 14.453 1.9 0.9 2 3134351.6 781536.0 1380.0
L4 17 15 39 17.3 58 3 7.9 58.1 14.2 13.532 4.2 0.9 2 3134365.1 781540.2 1380.0
L6 25 49 2 25.8 49 29 44.9 49.5 14.0 12.595 6.1 1.3 2 3134377.7 781546.3 1380.4
L8 0.0 75 18 49.5 75.3 0 0.0 2 3134377.7 781546.3 1379.1
L10 0.0 75 18 49.5 75.3 0 0.0 2 3134377.7 781546.3 1379.1
R2 8 3 14 8.1 83 22 0.8 83.4 16.1 15.936 2.3 0.8 2 3134393.7 781548.5 1379.9
R4 14 37 56 14.6 89 56 42.7 89.9 17.6 17.037 4.4 0.4 2 3134410.7 781553.0 1379.5
R6 17 43 7 17.7 93 1 53.8 93.0 19.4 18.491 5.9 0.4 2 3134429.2 781558.9 1379.5
R8 0.0 75 18 49.5 75.3 0 0.0 2 3134429.2 781558.9 1379.1
R10 0.0 75 18 49.5 75.3 0 0.0 2 3134429.2 781558.9 1379.1
IP3 1.364 0+047.882 0 0 10 0.0 75 18 49.5 75.3 10.6 10.584 0.0 0.5 2 3134439.8 781558.9 1379.6
L2 11 54 4 11.9 63 24 42.8 63.4 10.8 10.594 2.2 1.3 2 3134450.4 781561.1 1380.4
L4 26 6 16 26.1 49 12 31.0 49.2 9.9 8.8614 4.3 0.9 2 3134459.2 781565.4 1380.0
L6 36 25 46 36.4 38 53 1.0 38.9 10.1 8.1304 6.0 1.0 2 3134467.4 781571.4 1380.1
L8 0.0 75 18 49.5 75.3 0 0.0 2 3134467.4 781571.4 1379.1
L10 0.0 75 18 49.5 75.3 0 0.0 2 3134467.4 781571.4 1379.1
R2 9 57 15 10.0 85 16 1.9 85.3 11.4 11.246 2.0 0.3 2 3134478.6 781573.4 1379.4
R4 22 31 27 22.5 97 50 13.9 97.8 12.4 11.444 4.7 0.4 2 3134490.1 781578.2 1379.5
51
R6 0.0 75 18 49.5 75.3 0 0.0 2 3134490.1 781578.2 1379.1
R8 0.0 75 18 49.5 75.3 0 0.0 2 3134490.1 781578.2 1379.1
R10 0.0 75 18 49.5 75.3 0 0.0 2 3134490.1 781578.2 1379.1
IP3 1.364 0+052.882 0 0 50 0.0 75 18 49.5 75.3 5.6 5.59 0.0 0.5 2 3134495.6 781578.2 1379.6
L2 25 11 57 25.2 50 6 49.7 50.1 5.5 4.9431 2.3 0.4 2 3134500.6 781580.5 1379.5
L4 43 10 55 43.2 32 7 52.0 32.1 6.6 4.8039 4.5 0.9 2 3134505.4 781585.0 1380.0
L6 0.0 75 18 49.5 75.3 0 0.0 2 3134505.4 781585.0 1379.1
L8 0.0 75 18 49.5 75.3 0 0.0 2 3134505.4 781585.0 1379.1
L10 0.0 75 18 49.5 75.3 0 0.0 2 3134505.4 781585.0 1379.1
R2 18 43 45 18.7 94 2 31.9 94.0 6.8 6.4702 2.2 0.4 2 3134511.9 781587.2 1379.5
R4 37 53 51 37.9 113 12 39.6 113.2 7.9 6.2316 4.9 -0.3 2 3134518.1 781592.0 1378.8
R6 0.0 75 18 49.5 75.3 0 0.0 2 3134518.1 781592.0 1379.1
R8 0.0 75 18 49.5 75.3 0 0.0 2 3134518.1 781592.0 1379.1
R10 0.0 75 18 49.5 75.3 0 0.0 2 3134518.1 781592.0 1379.1
IP3 0+057.882 0 0 0 0.0 75 18 49.5 75.3 5.1 5.051 0.0 0.3 2 3134523.1 781592.0 1379.4
L2 19 5 40 19.1 56 13 7.0 56.2 5.2 4.9583 1.7 0.3 2 3134528.1 781593.8 1379.4
L4 33 11 32 33.2 42 7 14.9 42.1 5.8 4.8704 3.2 0.5 2 3134533.0 781596.9 1379.6
L6 0.0 75 18 49.5 75.3 0 0.0 2 3134533.0 781596.9 1379.1
L8 0.0 75 18 49.5 75.3 0 0.0 2 3134533.0 781596.9 1379.1
L10 0.0 75 18 49.5 75.3 0 0.0 2 3134533.0 781596.9 1379.1
R2 19 49 40 19.8 95 8 26.9 95.1 5.4 5.0667 1.8 0.0 2 3134538.0 781598.8 1379.1
R4 33 48 5 33.8 109 6 50.4 109.1 6.1 5.0914 3.4 0.2 2 3134543.1 781602.2 1379.3
R6 49 39 51 49.7 124 58 37.2 125.0 7.6 4.8946 5.8 -0.3 2 3134548.0 781607.9 1378.8
52
R8 0.0 75 18 49.5 75.3 0 0.0 2 3134548.0 781607.9 1379.1
R10 0.0 75 18 49.5 75.3 0 0.0 2 3134548.0 781607.9 1379.1
IP4 1.374 0+062.882 1 53 54 1.9 143 43 4.8 143.7 13.4 13.378 0.4 0.1 2 3134561.4 781608.4 1379.1
L2 8 6 36 8.1 135 36 28.8 135.6 12.0 11.861 1.7 0.0 2 3134573.3 781610.1 1379.1
L4 16 28 13 16.5 127 14 52.8 127.2 11.4 10.892 3.2 0.3 2 3134584.2 781613.3 1379.4
L6 0.0 143 43 4.8 143.7 0 0.0 2 3134584.2 781613.3 1379.1
L8 0.0 143 43 4.8 143.7 0 0.0 2 3134584.2 781613.3 1379.1
L10 0.0 143 43 4.8 143.7 0 0.0 2 3134584.2 781613.3 1379.1
R2 4 57 12 5.0 148 40 15.6 148.7 15.1 15.084 1.3 -0.5 2 3134599.2 781614.6 1378.6
R4 11 33 28 11.6 155 16 33.6 155.3 17.2 16.872 3.5 -0.4 2 3134616.1 781618.1 1378.7
R6 0.0 143 43 4.8 143.7 0 0.0 2 3134616.1 781618.1 1379.1
R8 0.0 143 43 4.8 143.7 0 0.0 2 3134616.1 781618.1 1379.1
R10 0.0 143 43 4.8 143.7 0 0.0 2 3134616.1 781618.1 1379.1
0+066.78 3 32 47 3.5 145 22 8.4 145.4 12.9 12.848 0.8 0.0 2 3134629.0 781618.9 1379.1
L2 12 26 50 12.4 132 55 19.2 132.9 12.1 11.788 2.6 0.3 2 3134640.8 781621.5 1379.4
L4 21 27 26 21.5 123 54 43.2 123.9 12.5 11.67 4.6 0.4 2 3134652.4 781626.0 1379.5
53
R10 0.0 145 22 8.4 145.4 0 0.0 2 3134680.9 781630.5 1379.1
IP4 1.374 0+071.718 1 5 20 1.1 142 54 43.2 142.9 8.7 8.6814 0.2 0.1 2 3134689.6 781630.7 1379.2
L2 12 16 20 12.3 130 38 20.4 130.6 8.7 8.4856 1.8 0.4 2 3134698.0 781632.5 1379.5
L4 24 46 26 24.8 118 8 13.2 118.1 9.2 8.366 3.9 0.3 2 3134706.4 781636.4 1379.4
L6 0.0 142 54 39.6 142.9 0 0.0 2 3134706.4 781636.4 1379.1
L8 0.0 142 54 39.6 142.9 0 0.0 2 3134706.4 781636.4 1379.1
L10 0.0 142 54 39.6 142.9 9.5 9.451 0.0 -0.2 2 3134715.9 781636.4 1378.9
R2 14 8 42 14.1 157 3 21.6 157.1 10.7 10.365 2.6 -0.1 2 3134726.2 781639.0 1379.0
R4 23 35 51 23.6 166 30 32.4 166.5 12.6 11.534 5.0 -0.5 2 3134737.8 781644.0 1378.6
R6 30 55 47 30.9 173 50 27.6 173.8 0 0.0 2 3134737.8 781644.0 1379.1
R8 0.0 142 54 43.2 142.9 0 0.0 2 3134737.8 781644.0 1379.1
R10 0.0 142 54 43.2 142.9 0 0.0 2 3134737.8 781644.0 1379.1
IP4 1.347 0+074.412 0 1 19 0.0 141 50 42.0 141.8 8.1 8.104 0.0 -0.1 2 3134745.9 781644.0 1379.0
L2 13 46 19 13.8 128 4 19.2 128.1 8.2 7.9827 2.0 0.0 2 3134753.8 781646.0 1379.1
L4 26 28 21 26.5 115 22 19.2 115.4 8.8 7.8549 3.9 0.3 2 3134761.7 781649.9 1379.4
L6 0.0 141 50 38.4 141.8 0 0.0 2 3134761.7 781649.9 1379.1
L8 0.0 141 50 38.4 141.8 0 0.0 2 3134761.7 781649.9 1379.1
L10 0.0 141 50 38.4 141.8 0 0.0 2 3134761.7 781649.9 1379.1
R2 30 53 47 30.9 172 44 24.0 172.7 8.7 7.4843 4.5 -0.2 2 3134769.2 781654.4 1378.9
R4 26 2 10 26.0 167 52 48.0 167.9 9.6 8.6635 4.2 -0.3 2 3134777.8 781658.6 1378.8
R6 34 52 31 34.9 176 43 8.4 176.7 11.8 9.6553 6.7 -0.5 2 3134787.5 781665.4 1378.6
R8 40 33 22 40.6 182 24 0.0 182.4 13.5 10.231 8.8 -0.5 2 3134797.7 781674.1 1378.6
54
IP4 1.000 0+076.648 0 0 0 0.0 141 50 38.4 141.8 5.1 5.081 0.0 0.2 2 3134802.8 781674.1 1379.3
L2 26 56 42 26.9 141 49 23.5 114.9 5.3 4.7229 2.4 0.2 2 3134807.5 781676.5 1379.3
L4 0.0 141 49 23.5 141.8 0 0.0 2 3134807.5 781676.5 1379.1
L6 0.0 141 49 23.5 141.8 0 0.0 2 3134807.5 781676.5 1379.1
L8 0.0 141 49 23.5 141.8 0 0.0 2 3134807.5 781676.5 1379.1
L10 0.0 141 49 23.5 141.8 0 0.0 2 3134807.5 781676.5 1379.1
R2 27 2 42 27.0 168 53 20.4 168.9 6.4 5.6841 2.9 -0.2 2 3134813.2 781679.4 1378.9
R4 42 53 35 42.9 184 44 13.2 184.7 8.1 5.9306 5.5 -0.2 2 3134819.1 781684.9 1378.9
R6 309 21 29 309.4 91 12 7.6 91.2 10.1 6.3936 -7.8 -0.5 2 3134825.5 781677.1 1378.6
R8 304 14 54 304.2 86 5 32.3 86.1 12.0 6.7511 -9.9 -0.5 2 3134832.3 781667.2 1378.6
-
R10 296 34 54 296.6 78 25 32.5 78.4 14.1 6.321 12.6 -0.8 2 3134838.6 781654.6 1378.3
IP4 0+079.68 1 3 35 1.1 142 52 58.8 142.9 3.7 3.6734 0.1 0.1 2 3134842.3 781654.6 1379.2
L2 30 10 22 30.2 112 42 36.0 112.7 4.0 3.4935 2.0 0.3 2 3134845.8 781656.7 1379.4
L4 0.0 142 52 36.0 142.9 0 0.0 2 3134845.8 781656.7 1379.1
L6 0.0 142 52 36.0 142.9 0 0.0 2 3134845.8 781656.7 1379.1
L8 0.0 142 52 36.0 142.9 0 0.0 2 3134845.8 781656.7 1379.1
L10 0.0 142 52 36.0 142.9 0 0.0 2 3134845.8 781656.7 1379.1
R2 27 28 39 27.5 170 21 39.6 170.4 4.4 3.8903 2.0 0.0 2 3134849.7 781658.7 1379.1
R4 49 56 21 49.9 192 49 19.2 192.8 5.8 3.7149 4.4 -0.2 2 3134853.4 781663.1 1378.9
R6 58 37 55 58.6 201 30 54.0 201.5 7.8 4.0789 6.7 -0.5 2 3134857.5 781669.8 1378.6
R8 64 51 10 64.9 207 44 9.6 207.7 10.0 4.2673 9.1 -0.5 2 3134861.7 781678.9 1378.6
R10 67 53 17 67.9 210 46 15.6 210.8 12.3 4.639 11.4 -0.5 2 3134866.4 781690.3 1378.6
IP4 0+079.772 232 8 35 232.1 13 57 57.6 14.0 2.0 -1.216 -1.6 0.0 2 3134865.2 781688.8 1379.1
L2 163 25 47 163.4 149 27 36.0 -149.5 1.5 -1.469 0.4 0.0 2 3134863.7 781689.2 1379.1
L4 0.0 13 57 57.6 14.0 0 0.0 2 3134863.7 781689.2 1379.1
L6 0.0 13 57 57.6 14.0 0 0.0 2 3134863.7 781689.2 1379.1
L8 0.0 13 57 57.6 14.0 0 0.0 2 3134863.7 781689.2 1379.1
55
L10 0.0 13 57 57.6 14.0 0 0.0 2 3134863.7 781689.2 1379.1
R2 261 59 21 262.0 275 57 18.0 276.0 3.6 -0.5 -3.6 -0.2 2 3134863.2 781685.6 1378.9
R4 278 8 3 278.1 292 6 0.0 292.1 6.6 0.9375 -6.6 -0.2 2 3134864.1 781679.1 1378.9
R6 277 43 56 277.7 291 41 52.8 291.7 8.8 1.1873 -8.7 -0.5 2 3134865.3 781670.3 1378.6
-
R8 279 6 57 279.1 293 4 48.0 293.1 11.4 1.805 11.2 -0.5 2 3134867.1 781659.1 1378.6
-
R10 279 51 7 279.9 293 49 4.8 293.8 11.8 2.0252 11.7 -0.7 2 3134869.1 781647.4 1378.4
IP4 0+084.489 216 10 30 216.2 357 59 52.8 358.0 5.1 -4.079 -3.0 -0.1 2 3134865.1 781644.4 1379.0
L2 109 34 45 109.6 248 25 8.4 248.4 5.1 -1.697 4.8 -0.1 2 3134863.4 781649.2 1379.0
L4 164 6 36 164.1 193 53 16.8 193.9 6.2 -5.999 1.7 -0.3 2 3134857.4 781650.9 1378.8
L6 0.0 357 59 52.8 358.0 0 0.0 2 3134857.4 781650.9 1379.1
L8 0.0 357 59 52.8 358.0 0 0.0 2 3134857.4 781650.9 1379.1
L10 0.0 357 59 52.8 358.0 0 0.0 2 3134857.4 781650.9 1379.1
R2 235 29 37 235.5 233 29 31.2 233.5 5.9 -3.358 -4.9 -0.3 2 3134854.0 781646.0 1378.8
R4 253 23 10 253.4 251 23 2.4 251.4 8.6 -2.457 -8.2 -0.5 2 3134851.6 781637.8 1378.6
-
R6 257 28 51 257.5 255 28 44.4 255.5 10.8 -2.344 10.6 -0.5 2 3134849.2 781627.2 1378.6
-
R8 260 19 9 260.3 258 19 1.2 258.3 13.1 -2.21 13.0 -0.4 2 3134847.0 781614.3 1378.7
R10 0.0 357 59 52.8 358.0 0 0.0 2 3134847.0 781614.3 1379.1
IP5 1.420 0+084.63 356 22 9 356.4 138 11 31.2 138.2 12.1 12.12 -0.8 0.4 2 3134859.1 781613.5 1379.5
L2 6 6 37 6.1 132 4 55.2 132.1 13.6 13.553 1.5 0.7 2 3134872.7 781615.0 1380.2
L4 0.0 138 11 31.2 138.2 0 0.0 2 3134872.7 781615.0 1379.4
L6 0.0 138 11 31.2 138.2 0 0.0 2 3134872.7 781615.0 1379.4
L8 0.0 138 11 31.2 138.2 0 0.0 2 3134872.7 781615.0 1379.4
L10 0.0 138 11 31.2 138.2 0 0.0 2 3134872.7 781615.0 1379.4
R2 344 48 54 344.8 123 0 25.2 123.0 11.2 10.81 -2.9 0.3 2 3134883.5 781612.0 1379.7
56
R4 328 27 31 328.5 106 39 3.6 106.7 11.2 9.5658 -5.9 0.3 2 3134893.0 781606.2 1379.8
R6 0.0 138 11 31.2 138.2 0 0.0 2 3134893.0 781606.2 1379.4
R8 0.0 138 11 31.2 138.2 0 0.0 2 3134893.0 781606.2 1379.4
R10 0.0 138 11 31.2 138.2 0 0.0 2 3134893.0 781606.2 1379.4
57
CHAPTER V
BRIDGE SURVEY
5.1 General
Bridges are the structures that are constructed with the purpose of connecting two places
separated by deep valleys or gorges or rivers and streams. Bridges are usually the cross
drainage and hence a part of roads making them shorter and hence economical. For places,
where the ground is uneven and undulated and where the number of rivers is large, bridges
are the most economic and efficient way. Triangulation method was applied for selecting
the shortest distance or length for the bridge.
5.2 Objectives
There are various objectives for Bridge site survey. Some of them are:
1. To select the possible bridge site and axis for the construction of bridge.
2. To collect the preliminary data i.e., normal water flow level, high flood level.
4. To carry out surveying for topographical mapping, longitudinal and cross sections at
both the upstream and downstream side of the river.
58
the triangles were well conditioned, i.e., none of the angles of the triangle were greater than
120ºor less than 30º.
a) The triangulation angle had to be measured on two sets of readings by total station
and the difference between the mean angles of two sets of readings had to be within
a minute.
b) The scale for plotting the topographical map was given to be 1:500.
c) In order to plot the longitudinal section of the river, data had to be taken along the
riverbed up to 80-100 m upstream and at least 30 m downstream.
d) The plot for the longitudinal section along the flow line had to be done in a scale of
1:100 for vertical and 1:1000 for horizontal.
e) For the cross-section profile, data had to be taken at 25 m intervals both upstream
and downstream, and one at the bridge axis. Observation had to cover minimally 20
m beyond the bank of river on either side or 10 m above the high flood level (HFL)
cover line, whichever was minimum.
f) Hydrological survey (determination of the highest flood level, ordinary flood level
and low water level) had to be done using appropriate method. The hydraulic data
thus obtained were to be shown in the plan as well as the cross section of the river.
3. 3 Pegs
4. Hammer
5. Tape
7. Prism holder
59
5.6 Methodology
5.6.1. Reconnaissance and site selection
As the first step, reconnaissance was done for the entire area where the bridge was to be
located. The site for the proposed bridge was selected at a location that was a continuation
of the straight portion of the existing road.
The following things were considered while selecting the bridge site:
a) The rock outcrops were studied and as they were strong enough to support the bridge
and the dead as well as live loads, the site was found suitable.
b) The slope of the riverbed was gentle at the proposed site. As steep slope means a
greater magnitude of water current, a lot of erosion and wear and tear takes place on
the pillars and the bridge foundation. Hence to avoid that condition, the location of
the bridge was chosen at the place where there was less water current.
c) The high flood level of the river was measured accurately and hence the height of
the bridge above the river was designed taking into consideration the occasional
flooding.
d) The bridge was chosen at such a place that it was very convenient to reach from the
nearby market. Hence its use is predicted to be huge thus providing service to a large
number of the local people.
e) Besides, the stones and coarse aggregates could also be used from local sources
thereby decreasing the transportation cost.
60
triangulation legs were measured by two ways taping and all the internal angles were
measured using theodolite. Then SIN Law was used to calculate the lengths of the
remaining legs of the triangle series of the proposed bridge axis.
5.6.4Cross-section
Cross-section of a river at a particular point is the profile of the lateral sides from the
centreline of the river cut transverse to the L-Section at that point. The cross section can be
used to calculate the volume and discharge of water at the particular section if the velocity
at the cross section is known. Cross sections were taken at an interval of about 25 m
extending 100 m upstream and 50 m downstream of the river. Prism readings of points
along a line perpendicular to the flow of river were taken from the stations points and the
elevations of the points were calculated using tacheometric methods. With all the
calculations done and the required data in hand, the cross section was plotted on a graph
paper.
5.6.5 Detailing
Detailing of the entire bridge site was done by tachometric method, the readings being taken
with a Total Station stationed at the different traverse stations. All the data and the
calculations have been tabulated in a systematic way and are attached with this report.
5.8 Conclusions
Economy and durability determine the way how a bridge is designed. The bridge axis
should be designed such that the span length should be minimum and the location is safe.
The bridge axis should not be below the highest flood level. The bridge axis was set
keeping in mind all the requisites that the proper site for the bridge. The result of the
computations of the triangulation gave the axis span of 13.255m. During the selection of the
site all the considerations like geological, socio-economical and topographical were taken
and the best site was selected. The inspection of the area showed that no springs, streams
61
and sewer were discharged into the river up to the 150-m upstream and 75 m downstream of
the axis site. The flow in river was normal and showed no danger of changing its direction
of flow for the design period of the bridge. The X-section was read up to the farthest point
as possible
All the necessary data and calculations are presented in the following pages in this report.
B
13
.2
55
m
N23
C A
62
BRIDGE SITE SURVEY
HORIZONTAL ANGLE
INST & SIGHTED Hor. An- Mean H. An- Hor. An- Mean H. An-
HI TO FACE HCR gle gle HCR gle gle Mean Horizontal Angle
L 0º 0'0" 90 º 0'0"
B R 180º 0'4" 256º54'5" 269º59'59" 256 º 54'5"
L 256 º 54'5" 256 º (Exterior)256 º 346 º 54'5"
A C R 76 º 54'8" 54'4" 54'4.5" 166 º 54'4" 256 º 54'5" 256 º 54'5" 256 º 54'4.75"
L 0 º 0'0" 61 º 90 º 0'0"
B R 179º59'59" 23'50" 270 º 0'04" 61 º 23'57"
L 61 º 23'50" 61 º 151º23'57"
A D R 241º23'52" 23'53" 61 º 23'51.5" 331º23'54" 61 º 23'50" 61 º 23'53.9" 61 º 23'52.5"
L 0 º 0'0" 90 º 0'0"
A R 180 º 0'03" 38 º 4'37" 270º0'03" 38 º 4'38"
L 38 º 4'37" 128 º 4'38"
B C R 218 º 4'41" 38 º 4'38" 38 º 4'37.5" 328 º 4'34" 38 º 4'31" 38 º 4'34.5" 38 º 4'36"
L 0 º 0'0" 288 º 90 º 0'0"
A R 180 º 0'4" 37'05" 270 º 0'0" 288 º 37'0"
L 288º37'05" 288 º (Exterior)288 º 18 º 37'0"
B D R 108 º 37'4" 37'0" 37'2.5" 198º36'56" 288º36'56" 288 º 36'58" 288 º 37'0.25"
D L 0 º 0'0" 47 º 47 º 12'27.5" 47º12’27.5”
A R 179º59'48" 12'12"
B L 47 º 12'11" 47 º
R 227º12'32" 12'44"
L 0 º 0'0" 38 º
B R 180 º 0'0" 49'52"
L 38 º 49'52" 38 º
C A R 218º49'52" 49'52" 38º 49'52" 38 º49’52”
55
Permissible error = c√N where, c= 30”
= 30” √3
= 51.96”
From Bridge Triangulation,
For triangle ABD, since within permissible error so correction required is + 14.17” in each
angle and for triangle BAC correction required is – 7.75”.
So corrected angles,
For triangle ABD
S.N. N E Z Remarks
65
15 3132594 780586.2 1256.039 RC
‚ABD= 61º224’6.67
‚BAD= 71º23’11.67”
‚BDA= 47º12’41.67”
For triangle BAC
‚BAC=103º5’48”
‚CBA= 38º49’44.25”
‚CAB= 38º4’28.25”
Detailing of Bridge Site Surveying
66
41 3132604 780600 1260.316 R.C
42 3132610 780597.6 1259.789 H.F
43 3132611 780596.9 1259.79 R.L
44 3132612 780592.8 1259.89 B.C
45 3132615 780598.5 1260.474 R.C
46 3132614 780591.5 1260.182 H.F
47 3132615 780598.5 1260.473 R.L
48 3132617 780594.9 1260.671 H.F
49 3132618 780591.4 1261.029 R.E
50 3132615 780600.8 1260.159 RL
51 3132613 780603.1 1260.534 RE
52 3132618 780606 1261.872 RE
53 3132624 780607.8 1262.762 RE
54 3132630 780597.3 1263.26 RE.R
55 3132632 780608.7 1264.217 R.E
56 3132635 780603 1264.542 R.ER
57 3132613 780593.9 1259.861 CHAMGEP
58 3132613 780593.9 1259.861 CP
59 3132599 780594.3 1259.88 SA
60 3132599 780594.3 1259.604 SA
61 3132617 780598.4 1260.646 RC
62 3132623 780601.5 1261.613 RC
67
79 3132636 780605 1263.649 RR
80 3132636 780618 1265.355 RU
81 3132638 780614.7 1265.856 RU
82 3132639 780612.5 1265.163 RU
83 3132641 780609.6 1264.946 RC
84 3132642 780607.3 1265.19 RR
85 3132643 780605.8 1265.232 RR
86 3132641 780618.5 1265.847 RU
87 3132641 780616.3 1266.186 RU
88 3132643 780613.7 1265.813 RU
89 3132643 780611.3 1266.022 RU
90 3132644 780609.1 1266.071 RR
91 3132645 780607.5 1265.92 RR
92 3132645 780606.2 1265.718 RR
93 3132643 780618.7 1266.433 RU
94 3132643 780617.5 1266.584 RU
95 3132644 780615.9 1266.614 RU
96 3132645 780614.6 1266.152 RU
97 3132646 780612.9 1266.724 RC
98 3132646 780611 1266.752 RR
99 3132647 780609.3 1266.769 RR
100 3132647 780607.7 1266.866 RR
101 3132645 780617.7 1266.68 RU
102 3132645 780616.5 1266.549 RU
103 3132646 780614.9 1266.472 RU
104 3132647 780613.5 1266.827 RC
105 3132647 780612.2 1267.026 RR
106 3132648 780610.5 1266.955 RR
107 3132648 780608.7 1266.974 RR
108 3132647 780617.3 1266.716 RU
109 3132647 780614.2 1266.933 RU
110 3132647 780615.8 1266.377 RU
111 3132648 780612.7 1267.357 RC
112 3132648 780610.7 1267.115 RR
113 3132648 780608.5 1267.105 RR
114 3132649 780617.8 1267.082 RL
115 3132649 780616.2 1266.951 RL
116 3132650 780614.7 1267.335 RL
117 3132650 780613.5 1267.635 RC
68
118 3132650 780612 1267.937 RR
119 3132650 780610.4 1267.339 RR
120 3132651 780617.8 1267.547 RR
121 3132651 780617.9 1267.547 RL
122 3132651 780616.1 1267.35 RL
123 3132651 780614.2 1267.512 RL
124 3132651 780612.6 1268.029 RC
125 3132652 780610.5 1267.808 RR
126 3132610 780599.9 1259.656 RL
127 3132609 780602.8 1260.719 RL
128 3132609 780604.2 1261.803 RL
129 3132610 780600.6 1260.04 RL
130 3132611 780599 1259.385 RL
131 3132612 780597.4 1259.571 RL
132 3132612 780596.2 1259.576 RC
133
69