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TGM
UGM
September 5, 2016 pengukuran Beda Tinggi - MGR 1
Oleh : Gondang Riyadi
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Infrastruktur Drainase
September 5, 2016 pengukuran Beda Tinggi - MGR 2
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September 5, 2016
3MGR - Kartografi - PSLH
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September 5, 2016 pengukuran Beda Tinggi - MGR 4
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September 5, 2016 Penggambaran Detil - MGR 5
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PETA ISO KWALITAS BATUBARAPETA ISO KWALITAS BATUBARA
September 5, 2016 pengukuran Beda Tinggi - MGR 6
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September 5, 2016 pengukuran Beda Tinggi - MGR 7
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September 5, 2016 pengukuran Beda Tinggi - MGR 8
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September 5, 2016 pengukuran Beda Tinggi - MGR 9
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ALTIMETER
BAROMETRIC LEVELLING
TRIGONOMETRIC LEVELING
WATERPASSING (PENYIPAT DATAR)
September 5, 2016 pengukuran Beda Tinggi - MGR 10
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Alat penyipat datar : konvensional maupun yang modern (baru)
Rambu ukur (baak) baik dilengkapi dengan mistar skala maupun tidak
Sepatu rambu sebagai alas dari rambu ukur Statif rambu untuk menjaga rambu supaya tidak
jatuh Nivo kotak untuk membuat rambu supaya tidak
miring (baik kemuka atau kebelakang dan ke kiri atau ke kanan
September 5, 2016 pengukuran Beda Tinggi - MGR 11
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September 5, 2016 pengukuran Beda Tinggi - MGR 12
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September 5, 2016 pengukuran Beda Tinggi - MGR 13
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September 5, 2016 pengukuran Beda Tinggi - MGR 14
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September 5, 2016 pengukuran Beda Tinggi - MGR 16
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September 5, 2016 pengukuran Beda Tinggi - MGR 17
1. Base Plate
2. Horizontal Circle
3. Eyepiece
4. Circular Bubble
5. Sighting Pointer
6. Objective Lens
7. Focusing Knob
8. Fine Motion Drive
9. Footscrew
10. Bubble Mirror
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September 5, 2016 pengukuran Beda Tinggi - MGR 18
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September 5, 2016pengukuran Beda Tinggi - MGR 19
Automatic Level Staff Readings ona staff
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Panjangnya bisa 3 s/d 5 meterDibuat bisa dari kayu atau
aluminiumAda yang sederhana dan ada
yang dilengkapi dengan mistar skala (skala baar)
September 5, 2016 pengukuran Beda Tinggi - MGR 20
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September 5, 2016 pengukuran Beda Tinggi - MGR 21
•Setiap meter diberi warna yang berbeda
•Setiap graduation sebesar 100 mm
•Setiap “E” adalah 50 mm
•Rambu dibaca dalam satuan milimeter
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September 5, 2016 pengukuran Beda Tinggi - MGR 22
0.3
0.33
0.339
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2
1
3 Large numbers are even feet
Small numbers are 10th
of a foot
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1
3
.10
.09
.08
.07
.06
.05
.04
.03
.02
.01
10 e
qual
sp
ace
s
100
th o
f a fo
ot
.00
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2
1
3
3.14.10.09.08.07.06.05.04.03.02.01.00
FYI
Foot Reading
10ths Reading
100ths Reading
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UGMActual Rod Reading
2
1
5
5.05.10.09.08.07.06.05.04.03.02.01.00
FYI
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1. 1.09 2. 4.17
3. 7.01 4. 3.89
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UGMMemerlukan peralatan optis yang mempunyai Benang silang
September 5, 2016 pengukuran Beda Tinggi - MGR 29
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Jarak antara TSR (benang atas) dan BSR (benang bawah) disebut interval stadia .
September 5, 2016 pengukuran Beda Tinggi - MGR 30
€
Hor. Dist. = SI x SF
SI = Stadia interval
SF = Stadia factor
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UGM Garis silang merupakan garis kolimasi
BB dan BA disebut dengan garis stadia
Biasanya stadia mempunyai faktor pengali 100
September 5, 2016 pengukuran Beda Tinggi - MGR 31
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BA = 3.040 BB = 2.946 BA – BB = 0.094
Jarak optis = 0.094 x 100 = 9.4 metres
September 5, 2016 pengukuran Beda Tinggi - MGR 32
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September 5, 2016 pengukuran Beda Tinggi - MGR 33
€
Hor. Dist. = TSR - BSR( ) x SF
€
Dist = TSR - BSR( ) x SF= 6.01 - 5.47( ) x 100= 0.54 x 100
= 54 ft
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September 5, 2016 pengukuran Beda Tinggi - MGR 34
€
Dist = TSR - BSR( ) x SF= 7.844 - 4.619( ) x 100= 3.225 x 100
= 322.5 ft
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Apabila Benang atas atau benang bawah terhalang, bisa digunakan cara ½ stadia. ½ stadia adalah setengah dari interval stadia
September 5, 2016 pengukuran Beda Tinggi - MGR 35
Contoh :
Jika TRS = 7.34 dan elevasi 6.21, maka jarak mendatarnya :
€
Horizontal Distance = TSR - Elev( ) x 2[ ] x 100= 7.34 - 6.21( ) x 2[ ] x 100= 226 ft
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Ada beberapa faktor yang mempengaruhi kesalahan pengukuran beda tinggi yang menggunakan penyipat datar, di antaranya ::
• Kesalahan garis kolimasi • Karena kelengkungan bumi • Kesalahan refraksi (undulasi) • Kesalahan paralaks
September 5, 2016 pengukuran Beda Tinggi - MGR 36
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Garis kolimasi adalah garis imaginer yang lebat benang silang pada teropong sipat datar
September 5, 2016 pengukuran Beda Tinggi - MGR 37
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September 5, 2016 pengukuran Beda Tinggi - MGR 38
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Karena panas sinar matahari akan mengakibatkan bacaan di rambu kabur / tidak jelas (undulasi)
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Step 1 Staff Slowly Leant Towards Instrument
Important Note – The person using the instrument keeps the staff vertical by use of the Vertical line in the instrument.
Step 2 Staff Slowly Tilted away from Instrument. When Vertical lowest reading will be reading recorded
Step 3 Staff Slowly Tilted away from instrument. Once past vertical readings will increase
Kesalahan dalam Pembacaan Rambu Ukur
September 5, 2016 pengukuran Beda Tinggi - MGR 43
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A
B
ba
dHab
d1 d2
HB = HA + dHab
= HA + (a – b )September 5, 2016 pengukuran Beda Tinggi - MGR 44
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September 5, 2016 pengukuran Beda Tinggi - MGR 45
B/S 2.510F/S 1.202Diff Between 1.308
B/S 2.301F/S 1.517Diff Between 0.784
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MSL
Pengukuran beda tinggi dengan metode sipat datar
September 5, 2016 pengukuran Beda Tinggi - MGR 46
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p0
p1
p0 = known point (benchmark)
BS IS IS FS
September 5, 2016 pengukuran Beda Tinggi - MGR 47
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A
B
ba
dHab
d1 d2
HB = HA + dHab
= HA + (a – b )September 5, 2016 pengukuran Beda Tinggi - MGR 48
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September 5, 2016 pengukuran Beda Tinggi - MGR 49
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Baca TOR pengukuran Buat SKETSA Lapangan Pemasangan titik ikat di lapangan Mengukur sudut Mengukur Jarak Mengukur Beda Tinggi Mengukur Detil di lapangan
September 5, 2016 pengukuran Beda Tinggi - MGR 50
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September 5, 2016 pengukuran Beda Tinggi - MGR 51
1. Jarak maksimum antara alat sipat datar ke rambu 60 meter.
2. Kedudukan alat pada setiap slag pengukuran harus pada jarak yang sama antara jarak instrumen ke rambu depan dan instrumen ke rambu belakang.
TOR / KAKKerangka acuan Kerja
BacaTOR
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September 5, 2016 pengukuran Beda Tinggi - MGR 52
PENGUKURAN TITIK KONTROL VERTIKAL
1.Pengukuran tinggi titik-titik kontrol vertikal dilakukan dengan metode sipat datar. Spesifikasi pengukuran adalah sebagai berikut:2.Sebelum alat digunakan harus dicek garis kolimasinya terlebih dahulu.3.Pengukuran beda tinggi dalam satu seksi dilakukan pergi pulang dalam satu hari.4.Jarak maksimum antara alat sipatdatar ke rambu 60 meter.5.Kedudukan alat pada setiap slag pengukuran harus pada jarak yang sama antara jarak instrumen ke rambu depan dan instrumen ke rambu belakang. 6.Kesalahan penutup maksimum ukuran pergi-pulang sebesar 10 mm √L (L: dalam kilometer).
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p0
PENGUKURAN SATU SLAG
BSFS
September 5, 2016 pengukuran Beda Tinggi - MGR 53
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p0
p1
PENGUKURAN SATU SEKSI
BS FS
September 5, 2016 pengukuran Beda Tinggi - MGR 54
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September 5, 2016 pengukuran Beda Tinggi - MGR 55
p0
p1
P0 dan P1 = (benchmark))
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MSL
Pengukuran beda tinggi dengan metode sipat datar
September 5, 2016 pengukuran Beda Tinggi - MGR 56
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September 5, 2016 pengukuran Beda Tinggi - MGR 57
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September 5, 2016 pengukuran Beda Tinggi - MGR 58
Pengukuran PERGI ><PULANG
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September 5, 2016 pengukuran Beda Tinggi - MGR 59
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September 5, 2016 pengukuran Beda Tinggi - MGR 60
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September 5, 2016 pengukuran Beda Tinggi - MGR 61
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September 5, 2016 pengukuran Beda Tinggi - MGR 62
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September 5, 2016 pengukuran Beda Tinggi - MGR 63
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September 5, 2016 pengukuran Beda Tinggi - MGR 64
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September 5, 2016 pengukuran Beda Tinggi - MGR 65
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A benchmark in every-day language is a point of reference for a measurement. In surveying a benchmark is specifically any permanent marker placed by a surveyor with a precisely known vertical elevation (but not necessarily a precisely known horizontal location). Designed to be used for many projects.
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September 5, 2016 pengukuran Beda Tinggi - MGR 70
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September 5, 2016 pengukuran Beda Tinggi - MGR 71
Set up the instrument where the benchmark can be viewed within correct parameters and a reasonable number of sights can be viewed. This location is identified as L1 circled in red
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September 5, 2016 pengukuran Beda Tinggi - MGR 72
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.817 1.377 44.000 BM
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 73
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.817 1.377 44.000 BM
1.250 Station 10.850 Station 21.330 Station 31.580 Station 4
Booking Sheet
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UGM
September 5, 2016 pengukuran Beda Tinggi - MGR 74
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.817 1.377 44.000 BM
1.250 Station 10.850 Station 21.330 Station 31.580 Station 4
1.450 1.462 1.438 24.000 S5 (CP)
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 75
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.817 1.377 44.000 BM
1.250 Station 10.850 Station 21.330 Station 31.580 Station 4
1.450 1.570 1.330 24.000 S5 (CP)2.550 2.680 2.420 26.000 S5 (CP)
Booking Sheet
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UGM
September 5, 2016 pengukuran Beda Tinggi - MGR 76
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.597 1.553 44.000 BM
1.250 S10.850 S21.330 S31.580 S4
1.450 1.570 1.330 24.000 S5 (CP)2.550 2.680 2.420 26.000 S5 (CP)
1.980 S61.760 S71.710 S81.840 S91.920 S10
Booking Sheet
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UGM
September 5, 2016 pengukuran Beda Tinggi - MGR 77
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.597 1.553 44.000 BM
1.250 S10.850 S21.330 S31.580 S4
1.450 1.570 1.330 24.000 S5 (CP)2.550 2.680 2.420 26.000 S5 (CP)
1.980 S61.760 S71.710 S81.840 S91.920 S10
3.250 S11 (CP)
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 78
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.597 1.553 44.000 BM
1.250 S10.850 S21.330 S31.580 S4
1.450 1.570 1.330 24.000 S5 (CP)2.550 2.680 2.420 26.000 S5 (CP)
1.980 S61.760 S71.710 S81.840 S91.920 S10
3.250 3.400 3.100 30.000 S11 (CP)1.831 2.021 1.641 38.000 S11 (CP)
1.258 1.418 1.098 32.000 BM
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September 5, 2016 pengukuran Beda Tinggi - MGR 79
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.597 1.553 44.000 BM
1.250 S10.850 S21.330 S31.580 S4
1.450 1.570 1.330 24.000 S5 (CP)2.550 2.680 2.420 26.000 S5 (CP)
1.980 S61.760 S71.710 S81.840 S91.920 S10
3.250 3.400 3.100 30.000 S11 (CP)1.831 2.021 1.641 38.000 S11 (CP)
1.258 1.418 1.098 32.000 BM
5.956 5.958 (Misclose) 194.000
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 80
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.597 1.553 44.000 BM
1.250 0.325 S10.850 0.400 S21.330 -0.480 S31.580 -0.250 S4
1.450 0.130 1.570 1.330 24.000 S5 (CP)2.550 2.680 2.420 26.000 S5 (CP)
1.980 0.570 S61.760 0.220 S71.710 0.050 S81.840 -0.130 S91.920 -0.080 S10
3.250 -1.330 3.400 3.100 30.000 S11 (CP)1.831 2.021 1.641 38.000 S11 (CP)
1.258 0.573 1.418 1.098 32.000 BM
5.956 5.958 194.000
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 81
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.597 1.553 44.000 BM
1.250 0.325 S10.850 0.400 S21.330 -0.480 S31.580 -0.250 S4
1.450 0.130 1.570 1.330 24.000 S5 (CP)2.550 2.680 2.420 26.000 S5 (CP)
1.980 0.570 S61.760 0.220 S71.710 0.050 S81.840 -0.130 S91.920 -0.080 S10
3.250 -1.330 3.400 3.100 30.000 S11 (CP)1.831 2.021 1.641 38.000 S11 (CP)
1.258 0.573 1.418 1.098 32.000 BM
5.956 5.958 2.268 -2.270 194.000
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 82
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.575 47.195 1.597 1.553 44.000 BM
1.250 0.325 47.520 S10.850 0.400 47.920 S21.330 -0.480 47.440 S31.580 -0.250 47.190 S4
1.450 0.130 47.320 1.570 1.330 24.000 S5 (CP)2.550 2.680 2.420 26.000 S5 (CP)
1.980 0.570 47.890 S61.760 0.220 48.110 S71.710 0.050 48.160 S81.840 -0.130 48.030 S91.920 -0.080 47.950 S10
3.250 -1.330 46.620 3.400 3.100 30.000 S11 (CP)1.831 2.021 1.641 38.000 S11 (CP)
1.258 0.573 47.193 1.418 1.098 32.000 BM
5.956 5.958 2.268 -2.270 -0.002 194.000
Booking Sheet
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Traverse Length = 190 metres Allowable Misclose = 12 x SQRT(0.190)
= 12 x 0.4359= 5.23mm
September 5, 2016 pengukuran Beda Tinggi - MGR 83
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September 5, 2016 pengukuran Beda Tinggi - MGR 84
BacksightIntermediate
Sight Foresight Rise Fall
1.3501.8502.2502.5353.030
2.7802.500
2.1903.1403.3802.230
1.9601.680
2.3601.480
1.2560.570
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September 5, 2016 pengukuran Beda Tinggi - MGR 85
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks1.350 BM
1.850 B2.250 C2.535 D3.030 E (CP)
2.780 F (CP)2.500 F (CP)
2.190 G3.140 H3.380 I2.230 J
1.960 K (CP)1.680 K (CP)
2.360 L1.480 M (CP)
1.256 BM0.570
6.786 -6.790 0.000 0.000
B/S 6.786 RISE 0.000 END 0.000F/S -6.790 FALL 0.000 START 0.000Misclose -0.004 0.000 0.000
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 86
BacksightIntermediate
Sight Foresight Rise Fall
0.6550.4651.2150.3650.690
1.1000.455
0.7601.2000.985
2.1002.560
0.7551.645
3.2732.100
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September 5, 2016 pengukuran Beda Tinggi - MGR 87
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Foresight Rise FallReduced
Level Top Bottom Dist Remarks0.655 3.650 BM
0.465 0.190 3.840 B1.215 -0.750 3.090 C0.365 0.850 3.940 D0.690 -0.325 3.615 E
1.100 -0.410 3.205 F (CP)0.455 F (CP)
0.760 -0.305 2.900 G1.200 -0.440 2.460 H0.985 0.215 2.675 I
2.100 -1.115 1.560 J (CP)2.560 J (CP)
0.755 1.805 3.365 K1.645 -0.890 2.475 L (CP)
3.273 L (CP)2.100 1.173 3.648 BM
6.943 -6.945 4.233 -4.235
B/S 6.943 RISE 4.233 END 3.648F/S -6.945 FALL -4.235 START 3.650Misclose -0.002 -0.002 -0.002
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 88
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September 5, 2016 pengukuran Beda Tinggi - MGR 89
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
SightFore sight
Height of Collimation
Reduced Level Top Bottom Dist Remarks
1.575 48.770 47.1951.250 47.5200.850 47.9201.330 47.4401.580 47.190
Booking Sheet
• It is more convenient for “Area Levelling” and can become cumbersome on long traverses.
It is also an easier method for “On the Fly Levelling”
• Also Known as Instrument Height Method
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September 5, 2016 pengukuran Beda Tinggi - MGR 90
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September 5, 2016 pengukuran Beda Tinggi - MGR 91
Set up the instrument where the benchmark can be viewed within correct parameters and a reasonable number of sights can be viewed. This location is identified as L1 circled in red
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September 5, 2016 pengukuran Beda Tinggi - MGR 92
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
SightFore sight
Height of Collimation
Reduced Level Top Bottom Dist Remarks
1.575 48.770 47.195
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 93
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
SightFore sight
Height of Collimation
Reduced Level Top Bottom Dist Remarks
1.575 48.770 47.1951.250 47.520 S10.850 47.920 S21.330 47.440 S31.580 47.190 S4
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 94
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
SightFore sight
Height of Collimation
Reduced Level Top Bottom Dist Remarks
1.575 48.770 47.195 BM1.250 47.520 S10.850 47.920 S21.330 47.440 S31.580 47.190 S4
1.450 48.770 S5
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 95
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
SightFore sight
Height of Collimation
Reduced Level Top Bottom Dist Remarks
1.575 48.770 47.195 BM1.250 47.520 S10.850 47.920 S21.330 47.440 S31.580 47.190 S4
2.550 1.450 49.870 47.320 S5
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 96
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
SightFore sight
Height of Collimation
Reduced Level Top Bottom Dist Remarks
1.575 48.770 47.195 BM1.250 47.520 S10.850 47.920 S21.330 47.440 S31.580 47.190 S4
2.550 1.450 49.870 47.320 S51.980 47.890 S61.760 48.110 S71.710 48.160 S81.840 48.030 S91.920 47.950 S10
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 97
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
SightFore sight
Height of Collimation
Reduced Level Top Bottom Dist Remarks
1.575 48.770 47.195 BM1.250 47.520 S10.850 47.920 S21.330 47.440 S31.580 47.190 S4
2.550 1.450 49.870 47.320 S51.980 47.890 S61.760 48.110 S71.710 48.160 S81.840 48.030 S91.920 47.950 S10
3.250 46.620 S11 (CP)
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 98
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Fore sightHeight of
CollimationReduced
Level Top Bottom Dist Remarks1.575 48.770 47.195 BM
1.250 47.520 S10.850 47.920 S21.330 47.440 S31.580 47.190 S4
2.550 1.450 49.870 47.320 S51.980 47.890 S61.760 48.110 S71.710 48.160 S81.840 48.030 S91.920 47.950 S10
1.831 3.250 48.451 46.620 S11 (CP)1.258 47.193 BM
Booking Sheet
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September 5, 2016 pengukuran Beda Tinggi - MGR 99
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Fore sightHeight of
CollimationReduced
Level Top Bottom Dist Remarks1.575 48.770 47.195 BM
1.250 47.520 S10.850 47.920 S21.330 47.440 S31.580 47.190 S4
2.550 1.450 49.870 47.320 S51.980 47.890 S61.760 48.110 S71.710 48.160 S81.840 48.030 S91.920 47.950 S10
1.831 3.250 48.451 46.620 S11 (CP)1.258 47.193 BM
5.956 5.9585.958
-0.002 Misclose
Booking Sheet
TGM
UGM
September 5, 2016 pengukuran Beda Tinggi - MGR 100
Surveyor______________________ Chainmen_________________________________
Instrument No___________________ Date__________________
BacksightIntermediate
Sight Fore sightHeight of
CollimationReduced
Level Top Bottom Dist Remarks1.575 48.770 47.195 BM
1.250 47.520 S10.850 47.920 S21.330 47.440 S31.580 47.190 S4
2.550 1.450 49.870 47.320 S51.980 47.890 S61.760 48.110 S71.710 48.160 S81.840 48.030 S91.920 47.950 S10
1.831 3.250 48.451 46.620 S11 (CP)1.258 47.193 BM
5.956 5.9585.958
-0.002 Misclose
End RL 47.193Start BM 47.195Misclose -0.002
Booking Sheet
TGM
UGM
Definition – Misclose- is when closing of a traverse due to errors in readings and instrument limitations there is a discrepancy.
The allowable discrepancy is (12 x square root of traverse in kilometres)
September 5, 2016 pengukuran Beda Tinggi - MGR 101
TGM
UGM
Traverse Length = 190 metres Allowable Misclose = 12 x SQRT(0.190)
= 12 x 0.4359= 5.23mm
September 5, 2016 pengukuran Beda Tinggi - MGR 102
TGM
UGMTERIMA KASIH
TerimakasihPT. Waindo SpecTerra
Geomatic Training and Research Center (GTRC)
September 5, 2016 pengukuran Beda Tinggi - MGR 103
TGM
UGM
PRAKTEK LAPANGANPRAKTEK LAPANGAN
September 5, 2016 pengukuran Beda Tinggi - MGR 104
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