 |
BSV521S - BASIC SURVEYING - 2ND OPP - JULY 2023 |
|
|
1 Page 1 |
▲back to top |
nAmlBIA UnlVERSITY
OF SCIEnCE Ano TECHnOLOGY
FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT
DEPARTMENT OF LAND AND SPATIAL SCIENCES
QUALIFICATIONS:
BACHELOROF GEOMATICS and DIPLOMA IN GEOMATICS
QUALIFICATIONS CODES:
07BGEO,06DGEO
QUALIFICATION LEVEL:
Level 7 - 07BGEO
Level 6 - 06DGEO
COURSE CODE: BSV521
COURSE NAME: Basic Surveying
DATE: July 2023
PAPER: THEORY
DURATION: 3 HOURS
MARKS: 100
SECOND OPPORTUNITY/SUPPLEMENTARY EXAMINATION QUESTION PAPER
EXAMINER:
Mr F. J. Louw
MODERATOR:
Mr S. Sinvula
INSTRUCTIONS
1. You MUST answer ALL QUESTIONS
2. Write clearly and neatly.
3. Number the answers clearly.
4. Make sure your Student Number is on the EXAMINATION BOOK(s).
5. MAKE SURE YOUR STUDENT NUMBER IS ON ALL THE DATA SHEETS AND
THAT YOU SUBMIT THEM WITH YOUR EXAMINATION BOOK(S).
PERMISSIBLE MATERIALS
1. Calculator, ruler, pen, pencil, and eraser.
THIS QUESTION PAPER CONSISTS OF 7 PAGES (Including this front page and 3 Data Sheets)
|
|
2 Page 2 |
▲back to top |
Basic Surveying
BSV521S
Question 1
1.1. Write short notes to explain the following terms:
1.1.1. Intersection.
(3)
1.1.2. Systematic Errors.
(2)
1.1.3. Engineering Surveys.
(2)
1.1.4. Reverse Polar.
(2)
1.2. How wide is one belt in the Namibian coordinate system, based on the central meridian?
(2)
1.3. Why should intermediate sights onto important points be avoided during levelling?
(2)
1.4. Name the THREEbasic methods of determining a distance.
(3)
1.5. Explain the term Reconnaissance in terms of a traverse.
(4)
[20]
Question 2
2.1. Points A, B, C and D were placed around a dam for the survey of a proposed water right. As neither
A to C, nor B to D was intervisible, the distances AB, BC,CDand DA, and the angles at A, B, C and D
were measured. Unfortunately, it was discovered that only the recorded value of angle C was
correct. From the information given in the sketch below, calculate the values of angles A, Band D.
Please perform all possible checks.
(10)
A
Second Opportunity I Supplementary Question Paper
Page 2 of 7
July 2023
|
|
3 Page 3 |
▲back to top |
Basic Surveying
BSV521S
2.2. Use the levelling observations given in Data Sheet 1 to fill up the missing readings (>K)and apply
the usual checks on the final heights of all the points. All checks need to be shown and any
misclosure needs to be distributed. Please detach the data sheet and submit it with your
examination book.
(10)
[20)
Question 3
3.1. Calculate the final coordinates for the traverse points on Data Sheet 2. Use the said data sheet for
all your calculations. Use the Bowditch Rule to adjust the traverse. Please note that the directions
are oriented, and the distances are final horizontal distances. Please detach the data sheet and
submit it with your examination book.
(10)
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 with
your examination book.
(10)
[20)
Question 4
Use the information and observations below to calculate the coordinates for the point RESEC,by using
the Q-point method for a resection calculation.
(20)
Co-ordinates
Name
y
X
t:, EROS
- 10 489.688 + 60 272.255
t:, KLEINE
- 10 567.964 + 70 190.852
t:,SWP
- 4 680.105 + 62 348.557
@TOP
Height of Instrument= 1.615m
Name
Final Observed Dir.
t:, KLEINE
331° 50' 04"
t:,SWP
108° 33' 01"
Long Leg
t:, EROS
238° 35' 27"
[20)
Second Opportunity/ Supplementary Question Paper
Page 3 of 7
July 2023
|
|
4 Page 4 |
▲back to top |
Basic Surveying
Question 5
BSV521S
5.1. Use the information and observations below to calculate the coordinates for point WIT.
(10)
Please note:
• The Prism Constant, the Atmospheric Correction, the Conversion to German Legal Metre and
the Combined Sea level & Scale Enlargement Scale Factor correction are already applied to
all measured distances.
• The directions are FINALOBSERVEDDIRECTIONS.
Co-ordinates
Name
V
X
LlAUB
- 26 635.590
+ 225 710.350
JOPIE
- 10 622.880
+ 225 193.620
@WIT
HI= 1.750m
Name
Final Observed Direction
Final Horizontal Distance
LlAUB
267°10'39"
JOPIE
208°40'45"
1530.362m
5.2. Use the information below to calculate the coordinates for point INTER.
Co-ordinates
Name
V
X
ST1
+ 10 380.000
+ 35 438.700
ST2
+ 9 565.860
+ 36102.
HI= 1.585m
Oriented Direction to INTER
@ST2
HI= 1.576m
Oriented Direction to INTER
273°15'21"
261°41'54"
(10)
[20)
Second Opportunity / Supplementary Question Paper
Page 4 of 7
July 2023
|
|
5 Page 5 |
▲back to top |
Basic Surveying
Student Number ________
_
BSV521S
Data Sheet 1
Question 2.2.
The first table is only given to show the missing readings, use the second table to answer the
question.
Height of Collimation Levelling Sheet
POINT
TSMlO0
a
b
C
d
5
6
TSM101
BACK INTER. FORE COLL.
SIGHT SIGHT SIGHT HEIGHT
}t{
1300.040
2.190
1.513
}t{
3.025
2.079
}t{
1.548 1302.184
}t{
3.263
}t{
REDUCED
LEVELS
1296.475
1298.527
}t{
}t{
}t{
1304.043
1298.921
1301.529
CORRECTION
FINAL
LEVELS
1296.475
1301.565
Height of Collimation Levelling Sheet
POINT
TSMl00
a
b
C
d
5
6
TSM101
BACK INTER. FORE COLL.
SIGHT SIGHT SIGHT HEIGHT
1300.040
2.190
1.513
3.025
2.079
1.548 1302.184
3.263
REDUCED
LEVELS
1296.475
1298.527
CORRECTION
FINAL
LEVELS
1296.475
1304.043
1298.921
1301.529
1301.565
Second Opportunity / Supplementary Question Paper
Page 5 of 7
July 2023
|
|
6 Page 6 |
▲back to top |
Basic Surveying
Student Number _________
_
Question 3.1.
Bowditch Rule - Adjustment Sheet
Note: All answers must be rounded off to 3 decimal places
BSV521S
Data Sheet 2
DIRECTION&
zV)
DISTANCE
0-,
DIFFERENCES
b.Y
b.X
264° 10' 10"
381.265m
270° 00' 05"
295.892m
Vl
C:
-0,
291° 20' 33" .O..J..
356.826m
re
::,
uro
5° 18' 38"
391.227m
I-
0z
0
Cl
STATION
A
FINAL
y
+ 4 932.565
COORDINATES
X
+ 67 891.023
B
C
D
E
+ 3 961.307
+ 68 371.758
Second Opportunity/ Supplementary Question Paper
Page 6 of 7
July 2023
|
|
7 Page 7 |
▲back to top |
Basic Surveying
Student Number _________
Question 3.2.
_
Direction Sheet
BSV521S
Data Sheet 3
1
Station
@ Resecl
lJ. Ounois
tJ. Snake
Tr1
2
3
4
Final Observed Incoming/ Back
Direction
Direction
Prov.
Correction
200° 13' 57''
2° 28' 16"
109° 49' 33"
5
Outgoing/
Forward
Direction
6
Final
Correction
7
Join Direction /
Final Oriented
Direction
200° 13' 46"
2° 28' 01"
@Trl
Resec1
Tr2
289° 49' 15"
107° 46' 58"
@Tr2
Tr1
RP1
287° 46' 43"
127° 31' 23"
@RPl
lJ.Triumph
lJ. Sieg
Tr 1
55° 31' 12"
152° 44' 55"
307° 31' 30"
55° 31' 20"
152° 45' 05"
Second Opportunity / Supplementary Question Paper
Page 7 of 7
July 2023