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BSV521S - BASIC SURVEYING - 1ST OPP - JUNE 2025 |
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nAmlBIA UnlVERSITY
OF SCIEnCE Ano TECHnOLOGY
FACULTYOF ENGINEERINGAND THE BUILTENVIRONMENT
DEPARTMENTOF LANDAND SPATIALSCIENCES
QUALIFICATIONS:
BACHELOROF GEOMATICS and DIPLOMA IN GEOMATICS
QUALIFICATIONSCODES:
07BGEO,06DGEO
QUALIFICATIONLEVEL:
Level 7 - 07BGEO
Level 6 - 06DGEO
COURSENAME: Basic Surveying
COURSECODE: BSV521S
COURSELEVEL:5
DATE: June 2025
PAPER:THEORY
DURATION: 3 HOURS
MARKS: 100
EXAMINER:
MODERATOR:
FIRSTOPPORTUNITYEXAMINATION QUESTION PAPER
Mr Frikkie Louw
Dr JosephOdumosu
INSTRUCTIONS
1. You MUST answer ALLQUESTIONS
2. Write clearly and neatly.
3. Number the answers clearly.
4. Make sure your Student Number is on the EXAMINATION BOOK(s).
5. MAKE SUREYOUR STUDENTNUMBER IS ON ALLTHE DATASHEETSAND
THAT YOU SUBMIT THEM WITH YOUR EXAMINATION BOOK(S).
PERMISSIBLEMATERIALS
1. Calculator, ruler, pen, pencil, and eraser.
THIS QUESTION PAPERCONSISTSOF 9 PAGES(Including this front page and 3 Data Sheets)
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Basic Surveying
BSV521S
Question 1
1.1. Answer the following questions by selecting the correct answer for each statement:
1.1.1. The process of measuring the relative positions of natural and man-made features on,
above, or below the earth's surface, and presenting this information either graphically
or numerically, is called:
A Surveying
B Levelling
C Measuring
D Contouring
1.1.2. The type of surveying that considers the true shape of the Earth is:
A Photogrammetry
B Geodetic Surveying
C Cartography
D Plane Surveying
1.1.3. What type of survey is conducted by a registered land surveyor or under their
supervision in Namibia? This survey focuses on measuring land to prepare scaled plans
and diagrams that show and define legal property boundaries, enabling ownership
registration in the Deeds Office.
A Topographic Surveying
B Hydrographic Surveying
C Cadastral Surveying
D Engineering Surveying
1.1.4. Which of the following levelling methods uses the principle that the difference in
elevation between two points correlates with the difference in atmospheric pressure at
those points?
A Barometric levelling
B Trigonometric levelling
C Spirit levelling
D Traverse levelling
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Basic Surveying
BSV521S
1.1.5. Which among the following is one of the principles of surveying?
A Taking measurements
B Covering the entire area
C Determining the elevation differences
D Working from whole to part
1.1.6. Parallax can be eliminated by focusing the eye-piece and objective.
A True
B False
C Maybe
D None of these
1.1.7. Close contours of decreasing values towards their centre, represents a
A Hill
B Depression
C Saddle
D River bed
1.1.8. Contours of different elevations may cross each other only in the case of a
A Overhanging cliff
B Vertical cliff
C Pass
D Valley
1.1.9. The reference object in angular observations must fulfill the following requirements:
A It must be a well-defined point
B It must not be too close or too far
C It does not have to have co-ordinates
D All the above
1.1.10. A permanent reference point or mark, of known height above a datum, is called:
A Reference point
B Benchmark
C Datum point
D Witness mark
(1 X 10) = (20)
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Basic Surveying
BSV521S
1.2. Please utilize the levelling observations found on the levelling field sheet below to
determine the final heights using any method that allows for a complete arithmetic check.
Be sure to complete Data Sheet 1. All standard checks must be performed, and any
misclosures should be adjusted accordingly. Note that the values in bold represent the
inverted staff readings. Please detach the data sheet and submit it along with your
examination booklet.
(10)
Levelling field sheet
Point
BMl-Roof
A
B
ROOF2
C
D
E
BM3-Roof
B.S.
-0.802
-0.920
0.975
I.S. F.S.
1.231
1.207
0.899
0.817
-0.838
0.966
-0.524
Final Heights
1217.355
1217.016
1.3. Describe ANY FIVE characteristics of contours.
(5)
[25]
Question 2
2.1. Calculate the mean co-ordinates of point INTER 1 using the information below.
(15)
Co-ordinates
Point
y
X
Description
LlPillar 1
- 8 183.882
+62 681.985
Concrete Pillar
Kl
- 8136.154
+62 628.497
Hole in concrete
The Final Oriented Direction from APillar 1 to INTER 1
= 60° 38' 05"
The Final Horizontal Distance from K 1 to INTER 1
= 203.065m
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Basic Surveying
BSV521S
2.2. Utilize the provided field book information below to calculate the final observed directions
at point R (no orientation correction is needed). Please present the results in a column
format.
(5)
.@B
HI= 1.812m
Point
Circle Left
Circle Right
b. Draai
317° 16' 03"
137° 16' 05"
b. Som
63° 23' 19"
243° 23' 23"
b. Eis
180° 06' 02"
0° 05' 58"
Draad
309° 11' 03"
129° 11' 11"
RO
317° 16' 09"
137° 16' 15"
2.3. Utilize the information below to calculate the final vertical directions at point K15. Please
present the results in a column format.
(5)
@K15 HI= 1.655m
Point
Circle Left
Circle Right
bi.CC
85° 03' 08"
274° 56' 58"
K2
92° 10' 37"
267° 49' 17"
Gate
94° 54' 05"
265° 05' 59"
[25]
Question 3
3.1. Please calculate the final coordinates for the traverse points using the information
provided in Data Sheet 2. Utilize the Bowditch Rule to adjust the traverse. Keep in mind
that the directions are oriented, and the distances are the final horizontal distances. Please
detach the data sheet and submit it along with your examination booklet.
(12)
3.2. Calculate oriented directions for the traverse by completing the direction sheet on Data
Sheet 3. Use the said data sheet for all your calculations. Please detach the data sheet and
submit it along with your examination booklet.
(13)
[25]
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Basic Surveying
BSV521S
Question 4
4.1. Use the data below to calculate the co-ordinates of Koppie using Collins Q-point method.
(20)
Co-ordinates
Name
llKOBUS
llLEPEL
llSLAAI
y
+ 33 252.460
+ 53 689.320
+ 27 619.400
X
+ 182 505.030
+ 203 390.460
+ 194 045.970
@ Koppie
llSLAAI
llLEPEL
llKOBUS
270° 00' 01" - Long Leg
46° 08' 52" - pt Leg
157° 03' 18" - 2nd Leg
4.2. Use the following Formula to calculate the height of Hl.
(5)
LlHab= H1- Hsig+ Sab/Tan (Z) + (1-k).S2/ (2R)
R = 6 370 000m)
k = 0.13
Co-ordinates
Point
y
ll EROS
-10 489.688
X
+60 272.255
z
1 810.685 (Ground Level)
The JOIN distance from Hl to fl EROSis 4 104.000m
.@Ji!
HI = 1.780m
Point
Zenith Angle
Height of Pillar
ll EROS
87° 46' 45"
1.200m (Top of Pillar)
[25]
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Basic Surveying
Student Number _________
_
Question 2.1.
Rise and Fall Levelling Sheet
NOTE: The BOLD values are the Inverted Staff Readings.
Rounded off to the nearest 3 (0.000) decimal places.
BM1-Roof -0.802
A
1.231
B
1.207
ROOF2 -0.920
-0.838
C
0.899
D
0.975
0.966
E
0.817
BM3-Roof
-0.524
BSV521S
Data Sheet 1
I
1217.355
1217.016
Height of Collimation Levelling Sheet
NOTE: The BOLD values are the Inverted Staff Readings.
Rounded off to the nearest 3 (0.000) decimal places.
BM1-Roof
A
-0.802
1.231
B
1.207
ROOF2
C
D
-0.920
0.975
0.899
-0.838
0.966
E
BM3-Roof
0.817
-0.524
I
1217.355
1217.016
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Basic Surveying
Student Number _________
_
Question 3.1.
Bowditch Adjustment Sheet
Note: All answers must be rounded off to 3 decimal places
BSV521S
Data Sheet 2
DIRECTION&
DISTANCE
zV)
0--,
155° 19' 55"
1331.645m
Vl
131° 59' 10"
·oC:
--,
Q)
1326.551m
+r-o'
::::,
151° 32' 05"
uro
t-
1088.307m 0z
0
0
DIFFERENCES
b,Y
b,X
STATION
A
B
C
D
FINAL
y
-6 436.905
-4 376.418
COORDINATES
X
+ 62 908.098
+ 59 853.774
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Basic Surveying
Student Number _________
Question 3.2
_
Direction Sheet
BSV521S
Data Sheet 3
1
Station
@TSM
b..KLOOF
CONl
b..TABLE
2
Final
Observed
Direction
3
Incoming/
Back
Direction
4
Prov.
Correction
5
Outgoing/
Forward
Direction
217° 06' 44"
244° 18' 12"
316° 51' 20"
6
Final
Correction
7
Join Direction/
Final Oriented
Direction
217° 06' 32"
316° 51' 14"
@CONl
CON2
TSM
283° 41' 35"
64° 18' 30"
@CON2
J78
CONl
261° 27' 40"
103° 41' 23"
@J78
b..KLOOF
b..TABLE
CON2
214° 20' 40"
320° 22' 25"
81° 28' 19"
214° 20' 09"
320° 21' 48"
1I I
First Opportunity Question Paper
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June 2025