STEPBYSTEP COMPUTATION OF AN URBAN CADASTRAL REESTABLISHMENT PROBLEM

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STEP-BY-STEP COMPUTATION OF AN URBAN CADASTRAL
RE-ESTABLISHMENT PROBLEM These slides can also
be downloaded from the 451-333 website
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TITLE INFORMATION
Part CA 5 Section 40 At Carlton Parish of Jika
County of Bourke
90 01 30 20.315
180 05 8.07
359 58 15 8.005
SWANSTON STREET
20.30 270 13
31.57
Step 1 Check misclose of title dimensions !
Make sure bearings go in same direction. (Misclose
0.003m)
FARADAY STREET
3
FIELD INFORMATION
Step 2 Check traverse misclose ( 0.004m) Step
3 Check North (arbitrary will have to adjust
later)
90 00
82.69
3.79
4.36
130 58 5.78
94 20 27.33
46.40
3.06
3.76
Fence
3.58
3.04
138 28 5.40
230 17 4.40
186 35 14.35
(15.74) 00 00 00
SWANSTON STREET
Fence
43 45 4.78
330 35 3 .84
2.26
3.31
Fence
271 17 40 25.61
3.53
3.30
30.66
45 16 3.76
2.67
FARADAY STREET
2.65
0.00
90 00
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CADASTRAL DATUM
From a previous Titles Office plan (CP 108650),
bearing and distance from A to B is known to be
359 58 15, 76.27m. Step 4 Compute A-B from
field observations ( 1 16 20, 76.273m, so
dist is o.k. but bearings are too HIGH (due to
arbitrary north) so adjust all field bearings
downwards by 360 1 16 20 - 359 58 15 1
18 05)
82.69
Brick
B
130 58 5.78
Brg Dist ??
SWANSTON STREET
00 00 00
225 16 3.76
A
Brick
FARADAY STREET
0.00
90 00
5
BEARING ADJUSTMENT
Do not worry about the effect of not including
the 05 it only makes a difference of 83 x (5
/ 206,265) 0.002m)
90 00
88 42
82.69
129 40
130 58 5.78
93 02
94 20 27.33
137 10
138 28 5.40
230 17 4.40
228 59
186 35 14.35
00 00 00
SWANSTON STREET
358 42
185 17
329 17
43 45 4.78
330 35 3.84
42 27
269 59 40
271 17 40 25.61
43 58
45 16 3.76
FARADAY STREET
0.00
90 00
88 42
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CORRECTED FIELD INFORMATION
88 42
82.69
3.79
4.36
129 40 5.78
93 02 27.33
46.40
3.06
3.76
Fence
3.58
3.04
137 10 5.40
228 59 4.40
185 17 14.35
(15.74) 358 42
SWANSTON STREET
Fence
42 27 4.78
329 17 3.84
2.26
3.31
Fence
269 59 40 25.61
3.53
3.30
30.66
43 58 3.76
2.67
FARADAY STREET
2.65
0.00
88 42
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COMPUTATION OF S-W ADOPT CORNER
42 14 4.89 AD
Fence
42 27 4.78 F
Missing Brg dist ??
3.37 AD
358 42
3.31 F
Fence
3.62 AD
3.53 F
89 59 40
SWANSTON STREET
30.66
Example Adopt offset 4.89 x sin (89 59 40
- 42 14) Adopt offset 4.89 x sin (42 14 -
358 42)
179 58 15 31.57
(known title information)
358 42
43 58 3.76
FARADAY STREET
0.00
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COMPUTATION OF S-E ADOPT CORNER
Missing Brg dist ??
(title information)
222 14 4.89 AD
270 13 20.30
89 59 40 25.61
330 16 4.08 AD
Fence
329 19 3.84 F
5 17
2.34 AD
Fence
2.26 F
3.54 AD
3.30 F
269 59 40
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COMPUTATION OF N-E ADOPT CORNER
Missing Brg dist ??
273 02
3.06 F
2.85 AD
Fence
5 17 14.35
185 17
180 05 8.07
(title information)
3.07 AD
3.04 F
231 14 4.27 AD
228 59 4.40 F
Fence
150 16 4.08 AD
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COMPUTATION OF N-W ADOPT CORNER
273 02 27.33
51 14 4.27 AD
Missing Brg dist ??
90 01 30 20.315
(title information)
93 02
3.91 AD
3.76 F
Fence
3.58 F
178 42
3.55 AD
137 10 5.40 F
138 26 5.49 AD
Fence
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CHECK ON START CORNER
318 26 5.49 AD
42 14 4.89 AD
3.37 AD
358 42
3.62 AD
178 42 15.74
359 58 15 8.005
title information)
89 59 40
SWANSTON STREET
Missing Brg and Dist should compute to be very
close to original adopt distance and offsets (/-
0.01m)
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FINAL RE-ESTABLISHMENT DIAGRAM
0.05
0.21
0.03
0.03
SWANSTON STREET
0.08
0.06
0.07
0.24
Fence
Adopt boundary
FARADAY STREET