irigasi pertanian ami
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DESAIN IRIGASI PERTANIAN
RIA UTAMI (0907121304)
Tabel 2.1 Koefisien Pemantulan (Koefisien Albedo)
Sifat Permukaan r
Air Terbuka
Batu
RumputTanaman Hijau
0,06
0,12 – 0,15
0,08 –
0,090,20
Sumber: CD Soemarto, Hidrologi Teknik, 1995
Tabel 2.2 Harga W sesuai Temperatur dan Ketinggian
Temperatur0C 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40
W, pada
Ketinggian (m)
0 0.43 0.46 0.49 0.52 0.55 0.58 0.61 0.64 0.66 0.68 0.71 0.73 0.75 0.77 0.78 0.80 0.82 0.83 0.84 0.85
500 0.45 0.48 0.51 0.54 0.57 0.60 0.62 0.65 0.67 0.70 0.72 0.74 0.76 0.78 0.79 0.81 0.82 0.84 0.85 0.85
1000 0.46 0.49 0.52 0.55 0.58 0.61 0.64 0.66 0.69 0.71 0.73 0.75 0.77 0.79 0.80 0.82 0.83 0.85 0.86 0.872000 0.49 0.52 0.55 0.58 0.61 0.64 0.66 0.69 0.71 0.73 0.75 0.77 0.79 0.81 0.82 0.84 0.85 0.86 0.87 0.88
3000 0.52 0.55 0.58 0.61 0.64 0.66 0.69 0.71 0.73 0.75 0.77 0.79 0.81 0.82 0.84 0.85 0.86 0.88 0.88 0.89
4000 0.55 0.58 0.61 0.64 0.66 0.69 0.71 0.73 0.76 0.78 0.79 0.81 0.83 0.84 0.85 0.86 0.88 0.89 0.90 0.90
Sumber: Diktat Kuliah Irigasi, Sujarwadi
Tabel 2.3 Tabel ea dalam m bar sebagai fungsi temperatur udara rata-rata (0C )
Temperatur0C 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
ea (m bar) 6,1 6,6 7,1 7,6 8,1 8,7 9,3 10,0 10,7 11,5 12,3 13,1 14,0 15,0 16,1 17,0 18,2 19,4 20,6 22,0
Temperatur0C 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
ea (m bar) 23,4 24,9 26,4 28,1 29,8 31,7 33,6 35,7 37,8 40,1 42,4 44,9 47,6 50,3 53,2 56,2 59 62,8 66,3 69,9 Sumber: Diktat Kuliah Irigasi, Sujarwadi
Tabel 2.4 Harga dari F(U) = 0,27x(1 + U2 /100) pada tinggi 2 meter dinyatakan dalam km/hari
Angin
km/hari0 10 20 30 40 50 60 70 80 90
- 0,30 0,32 0,35 0,38 0,41 0,43 0,46 0,49 0,51
100 0,54 0,57 0,59 0,62 0,65 0,68 0,70 0,73 0,76 0,78
200 0,81 0,84 0,86 0,89 0,92 0,95 0,97 1,00 1,03 1,05
300 1,08 1,11 1,13 1,16 1,19 1,22 1,24 1,27 1,30 1,32
400 1,35 1,38 1,40 1,43 1,46 1,49 1,51 1,54 1,57 1,59
500 1,62 1,65 1,67 1,70 1,73 1,76 1,78 1,81 1,84 1,86
600 1,89 1,92 1,94 1,97 2,00 2,03 2,05 2,08 2,11 2,13
700 2,16 2,19 2,21 2,24 2,27 2,30 2,32 2,35 2,38 2,40
800 2,43 2,46 2,48 2,51 2,54 2,57 2,59 2,62 2,65 2,67
900 2,70 Sumber:
Diktat Kuliah Irigasi, Sujarwadi
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DESAIN IRIGASI PERTANIAN
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Tabel 2.5 Faktor penyesuaian (c) untuk persamaan Penmann dengan modifikasi
Rs mm/hari 3 6 9 12 3 6 9 12 3 6 9 12
Usiang (m/detik)
0 0,86 0,90 1,00 1,00 0,96 0,98 1,05 1,05 1,02 1,06 1,10 1,10
3 0,79 0,84 0,92 0,97 0,92 1,00 1,11 1,19 0,99 1,10 1,27 1,32
6 0,68 0,77 0,87 0,93 0,85 0,96 1,11 1,19 0,94 1,10 1,26 1,33
9 0,55 0,65 0,78 0,90 0,76 0,88 1,02 1,14 0,88 1,01 1,16 1,27
Usiang (m/detik)
0 0,86 0,90 1,00 1,00 0,96 0,98 1,05 1,05 1,02 1,06 1,10 1,10
3 0,76 0,81 0,88 0,94 0,87 0,96 1,06 1,12 0,94 1,04 1,18 1,28
6 0,61 0,68 0,81 0,88 0,77 0,88 1,02 1,10 0,86 1,01 1,15 1,22
9 0,46 0,56 0,72 0,82 0,67 0,79 0,88 1,05 0,78 0,92 1,06 1,18
Usiang (m/detik)
0 0,86 0,90 1,00 1,00 0,96 0,98 1,05 1,05 1,02 1,06 1,10 1,103 0,69 0,76 0,85 0,92 0,83 0,91 0,99 1,05 0,89 0,98 1,10 1,14
6 0,53 0,61 0,74 0,84 0,70 0,80 0,94 1,02 0,79 0,92 1,05 1,12
9 0,37 0,48 0,65 0,76 0,59 0,70 0,84 0,95 0,71 0,81 0,96 1,06
Usiang (m/detik)
0 0,86 0,90 1,00 1,00 0,96 0,98 1,05 1,05 1,02 1,06 1,10 1,10
3 0,64 0,76 0,82 0,89 0,78 0,86 0,94 0,99 0,85 0,92 0,92 1,05
6 0,43 0,53 0,68 0,79 0,62 0,70 0,84 0,93 0,72 0,82 0,82 1,00
9 0,27 0,43 0,59 0,70 0,50 0,60 0,75 0,87 0,62 0,72 0,72 0,96
Usiang /Umalam = 3,0
Usiang /Umalam = 2,0
Usiang /Umalam = 1,0
RH max = 30% RH max = 60% RH max = 90%
Usiang /Umalam = 4,0
Sumber: Diktat Kuliah Irigasi, Sujarwadi
Tabel 2.6 Harga Ra dalam Evaporasi Ekivalen (mm/hari) untuk Belahan Bumi SelatanLintang Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
500 17.5 14.7 10.9 7.0 4.2 3.1 3.5 5.5 8.9 12.9 16.5 18.2
480 17.6 14.9 11.2 7.5 4.7 3.5 4.0 6.0 9.3 13.2 16.6 18.2
460 17.7 15.1 11.5 7.9 5.2 4.0 4.4 6.5 9.7 13.4 16.7 18.3
440 17.8 15.3 11.9 8.4 5.7 4.4 4.9 6.9 10.2 13.7 16.7 18.3
420 17.8 15.5 12.2 8.8 6.1 4.9 5.4 7.4 10.6 14.0 16.8 18.3
400 17.9 15.7 12.5 9.2 6.6 5.3 5.9 7.9 11.0 14.2 16.9 18.3
380 17.9 15.8 12.8 9.6 7.1 5.8 6.3 8.3 11.4 14.4 17.0 18.3
360 17.9 16.0 13.2 10.1 7.5 6.3 6.8 8.8 11.7 14.6 17.0 18.2
340 17.8 16.1 13.5 10.5 8.0 6.8 7.2 9.2 12.0 14.9 17.1 18.2
320 17.8 16.2 13.8 10.9 8.5 7.3 7.7 9.6 12.4 15.1 17.2 18.1
300 17.8 16.4 14.0 11.3 8.9 7.8 8.1 10.1 12.7 15.3 17.3 18.1
28
0 17.7 16.4 14.3 11.6 9.3 8.2 8.6 10.4 13.0 15.4 17.2 17.9
260 17.6 16.4 14.4 12.0 9.7 8.7 9.1 10.9 13.2 15.5 17.2 17.8
240 17.5 16.5 14.6 12.3 10.2 9.1 9.5 11.2 13.4 15.6 17.1 17.7
220 17.4 16.5 14.8 12.6 10.6 9.6 10.0 11.6 13.7 15.7 17.0 17.5
200 17.3 16.5 15.0 13.0 11.0 10.0 10.4 12.0 13.9 15.8 17.0 17.4
180 17.1 16.5 15.1 13.2 11.4 10.4 10.8 12.3 14.1 15.8 16.8 17.1
160 16.9 16.4 15.2 13.5 11.7 10.8 11.2 12.6 14.3 15.8 16.7 16.8
140 16.7 16.4 15.3 13.7 12.1 11.2 11.6 12.9 14.5 15.8 16.5 16.6
120 16.6 16.3 15.4 14.0 12.5 11.6 12.0 13.2 14.7 15.8 16.4 16.5
100 16.4 16.3 15.5 14.2 12.8 12.0 12.4 13.5 14.8 15.9 16.2 16.2
80 16.4 16.1 15.5 14.4 13.1 12.4 12.7 13.7 14.9 15.8 16.0 16.0
60 15.8 16.0 15.6 14.7 13.4 12.8 13.1 14.0 15.0 15.7 15.8 15.7
40 15.5 15.8 15.6 14.9 13.8 13.2 13.4 14.3 15.1 15.6 15.5 15.4
2 0 15.3 15.7 15.7 15.1 14.1 13.5 13.7 14.5 15.2 15.5 15.3 15.1
00 15.0 15.5 15.7 15.3 14.4 13.9 14.1 14.8 15.3 15.4 15.1 14.8
Sumber: Diktat Kuliah Irigasi, Sujarwadi
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DESAIN IRIGASI PERTANIAN
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Tabel 2.7 Angka Koefisien Bulanan (C) Untuk Rumus Penman
Bulan C Bulan C
Januari
Februari
Maret
April
Mei
Juni
1.1
1.1
1.0
0.9
0.9
0.9
Juli
Agustus
September
Oktober
November
Desember
0.9
1
1.1
1.1
1.1
1.1
Sumber: Suhardjono, Ajar Mandiri, 1991
Tabel 2.8 Koefisien Tanaman (Kc)
Periode
Tengah
Bulanan
Padi
Nedeco / ProsidaFAO
KedelaiVarietas Biasa Varietas
Unggul
Varietas Biasa Varietas
Unggul
12
3
4
5
6
7
8
1.201.20
1.30
1.40
1.35
1.24
1.12
0.00
1.201.27
1.33
1.30
1.30
0.00
1.101.10
1.10
1.10
1.10
1.05
0.95
0.00
1.101.10
1.05
1.05
0.95
0.00
0.500.75
1.00
1.00
0.82
0.45
Sumber : Dirjen Pengairan, Bina Program PSA 010, 1985
Tabel 2.9 Kebutuhan Air Untuk Penyiapan Lahan
Eo + P T = 30 hari T = 45 hari
mm / hari S = 250 mm S = 300 mm S = 250 mm S = 300 mm
5,0 12,7 8,4 9,5
5,5 11,1 13,0 8,8 9,8
6,0 11,4 13,3 9,1 10,1
6,5 11,7 13,6 9,4 10,4
7,0 12,0 13,9 9,8 10,8
7,5 12,3 14,2 10,1 11,18,0 12,6 14,5 10,5 11,4
8,5 13,0 14,8 10,8 11,8
9,0 13,3 15,2 11,2 12,1
9,5 13,6 15,5 11,6 12,5
10,0 14,0 15,8 12,0 12,9
10,5 14,3 16,2 12,4 13,2
11,0 14,7 16,5 12,8 13,6
15,0
Sumber : KP –
01, tahun 1986
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DESAIN IRIGASI PERTANIAN
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w
w
h
m
Tabel 2.10 Bentuk-Bentuk Geometris Penampang Saluran
No. PenampangLuas
(A)
Keliling Basah
(P)
Jari-jari Hidrolis
(R)
1.
2.
3.
4.
w
b
M.A.N
1
m1
d
θ
b . h
(b+m.h)h
m.h2
1/8 (θ-sin θ)d2
b + 2h
b+2h 2m1
2h 2m1
½.θ.d
2hb
h.b
2m12hb
hm)(b
2m12
h.m
¼ (1- sin θ/ θ)d
Sumber: Ven Te Chow, Hidrolika Saluran terbuka, 1989
M.A.N
M.A.N
h
h
h
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Tabel 2.11 Parameter Perhitungan untuk Kemiringan Saluran
Sumber: Bambang S, Bahan Kuliah Irigasi Pertanian
Tabel 2.12 Kemiringan Dinding dan Jagaan SaluranDebit Saluran Lereng
Saluranb / h
Jagaan
m3
/ dt W
Saluran tersier1:01 1 0,3
Q < 0,5
Saluran
sekunder 1:01 1 0,4
Q < 0,5
Saluran induk
dan saluran
sekunderQ = 0,5 – 1
Q = 1 – 2 1 : 1,5 2 0,5
Q = 2 – 3 1 : 1,5 2,5 0,6
Q = 3 – 4 1 : 1,5 3 0,6
Q = 4 – 5 1 : 1,5 3,5 0,6
Q = 5 – 10 1 : 1,5 4 0,6
Q = 10 – 25 1 : 1,5 4 0,7
Q = 25 – 40 1:02 4 – 50,75 –
1,0
1:02 5 –
7 1,0Sumber: Dirjen Pengairan, Standar Perencanaan Saluran dan bangunan-bangunannya, 1980
F
0.00 - 0.15 1.0 0.25 - 0.30
0.15 - 0.30 1.0 0.30 - 0.350.30 - 0.40 1.5 0.35 - 0.40
0.40 - 0.50 1.5 0.40 - 0.45
0.50 - 0.75 2.0 0.45 - 0.50
0.75 - 1.50 2.0 0.50 - 0.55
1.50 - 3.00 2.5 0.55 - 0.60
3.00 - 4.50 3.0 0.60 - 0.65
4.50 - 6.00 3.5 0.65 - 0.70
6.00 - 7.50 4.0
7.50 - 9.00 4.5
9.00 - 11.00 5.0
11.00 - 15.00 6.0
15.00 - 25.00 8.0 0.75
25.00 - 40.00 10.0
40.00 - 80.00 12.0
0.70
0.70
0.70
0.30
0.40
0.50
0.60
1.00
Q (m3 /dt)
0.70
V (m/dt)
0.70
0.70
0.70
hb
m
0.15 - 0.30 1.00 35
0.30 - 0.50 1.00 1.0 - 1.2 350.50 - 0.75 1.00 1.2 - 1.3 35
0.75 - 1.00 1.00 1.3 - 1.5 35
1.00 - 1.50 1.00 1.5 - 1.8 40
1.50 - 3.00 1.50 1.8 - 2.3 40
3.00 - 4.50 1.50 2.3 - 2.7 40
4.50 - 5.00 1.50 2.7 - 2.9 40
5.00 - 6.00 1.50 2.9 - 3.1 42.5
6.00 - 7.50 1.50 3.1 - 3.5 42.5
7.50 - 9.00 1.50 3.5 - 3.7 42.5
9.00 - 10.00 1.50 3.7 - 3.9 42.5
10.00 - 11.00 2.00 3.9 - 4.2 45
11.00 - 15.00 2.00 4.2 - 4.9 45
15.00 - 25.00 2.00 4.9 - 6.5 45
25.00 - 40.00 2.00 6.5 - 9.6 45
Q (m3 /d t) n
1.0
n
1k
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DESAIN IRIGASI PERTANIAN
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Tabel 2.13 Hubungan Q dan F Tinggi Jagaan
Q (m3/det) F
0-0.3 0.3
0.3-0.5 0.4
0.5-1.5 0.5
1.5-15 0.6
15-25 0.75
>25 1
Sumber : Dirjen Pengairan, Bina Program PSA 010, 1985
Tabel 2.14 Hubungan Lebar Tanggul dan Jenis Saluran
Saluran W
Tersier dan
Kuarter0.5
Sekunder 1
Induk 2
Sumber : Dirjen Pengairan, Bina Program PSA 010, 1985
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DESAIN IRIGASI PERTANIAN
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Tabel 2.12 Hubungan Lebar Tanggul dan Jenis Saluran
Catatan Debit Metode Parameter Perencanaan
1a Data cukup (20 tahun Analisa distribusi Debit rata-rata tengah
atau lebih) frekuensi normal bulanan dengan kemungkinan
tak terpenuhi 20%
1b Data terbatas Analisis frekuensi rangkaian seperti pada 1a dengan
debit dihubungkan dengan ketelitian kurang dari itu
rangkaian curah hujan yang
mencakup waktu lebih lama.
2 Data minimal atau a. Model simulasi seperti pada 1b dengan
tidak ada perimbangan air dari Dr. ketelitian kurang dari itu
Mock atau metode serupa
lainnya. Curah hujan di
daerah aliran sungai,
evapotranspirasi, vegetasi,
tanah, & karakteristik geo-
logis daerah aliran sebagai
data masukan
b. Perbandingan dengan
daerah aliran sungai di
dekatnya
3 Data tidak ada Metode kapasitas saluran seperti pada 1b dengan
ketelitian kurang dari itu
Aliran rendah dihitung dari
muka air rendah, potongan
melintang sungai & kemiringan
yang sudah diketahui. Metodetidak tepat: hanya sebagai cek.
zSumber : KP-01, Tahun 1986
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33.5.1 Tabel Data Temperatur
Data : Temperatur Maksimum
Data : Temperatur Minimum
Data : Perhitungan Temperatur Rata-rata
..........................................................................................
BulanTemperatur Maksimum
Tahun Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des
1995 31.20 31.80 31.60 32.50 33.20 32.20 33.60 32.60 32.60 31.20 32.50 31.60
1996 31.60 31.60 31.80 32.90 33.90 32.90 31.20 33.00 33.10 33.00 31.90 32.20
1997 32.60 33.50 32.80 31.50 31.20 32.50 32.50 32.50 33.50 32.50 30.20 31.10
1998 32.10 32.90 33.10 31.20 31.60 31.60 34.00 33.60 30.80 31.20 32.10 30.90
1999 31.50 31.60 33.20 32.90 31.50 32.50 33.90 32.90 31.50 32.50 34.00 32.50
2000 33.20 32.40 32.90 32.20 32.60 31.60 32.60 31.20 33.40 33.10 32.50 34.00
2001 34.00 31.60 31.60 33.60 32.80 31.00 31.50 30.90 33.60 32.60 33.60 31.20
2002 32.50 32.70 31.20 34.00 32.00 32.50 32.60 32.10 33.30 30.90 31.90 32.50
2003 32.60 31.80 33.20 30.60 31.00 31.60 33.00 33.80 31.20 31.20 30.20 32.90
2004 31.70 33.80 33.50 31.20 31.60 30.00 32.60 31.00 32.00 30.50 31.50 31.60
Min 31.20 31.60 31.20 30.60 31.00 30.00 31.20 30.90 30.80 30.50 30.20 30.90
Max 34.00 33.80 33.50 34.00 33.90 32.90 34.00 33.80 33.60 33.10 34.00 34.00
Rerata 32.30 32.37 32.49 32.26 32.14 31.84 32.75 32.36 32.50 31.87 32.04 32.05
Bulan Temperatur Minimum
Tahun Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des
1995 21.30 22.30 22.80 21.60 20.50 21.60 23.90 21.50 22.90 20.90 21.90 23.10
1996 24.30 23.60 20.60 22.10 20.60 21.50 20.10 20.90 21.30 20.10 22.50 24.00
1997 20.30 22.60 23.50 20.60 21.30 22.50 23.80 24.00 22.50 22.30 22.30 21.50
1998 20.10 21.90 22.60 20.30 22.30 20.30 24.00 23.60 20.30 22.50 20.90 22.90
1999 21.30 21.50 20.30 21.60 22.50 20.90 21.30 21.50 22.60 21.90 21.60 21.80
2000 21.50 21.60 20.10 21.90 22.90 21.50 23.60 20.30 23.90 21.80 24.00 21.60
2001 21.90 22.50 22.00 22.50 21.50 22.30 20.50 21.60 22.50 22.70 23.10 21.40
2002 23.00 23.10 21.90 22.10 21.40 22.60 23.60 20.50 22.40 23.80 20.50 23.50
2003 20.50 23.40 20.60 24.00 21.80 22.80 22.00 22.30 21.30 22.70 21.60 22.10
2004 21.30 23.80 223.00 23.80 20.30 24.00 21.50 23.50 22.60 21.60 21.90 21.00
Min 20.10 21.50 20.10 20.30 20.30 20.30 20.10 20.30 20.30 20.10 20.50 21.00
Max 24.30 23.80 223.00 24.00 22.90 24.00 24.00 24.00 23.90 23.80 24.00 24.00Rerata 21.55 22.63 41.74 22.05 21.51 22.00 22.43 21.97 22.23 22.03 22.03 22.29
Bulan Temperatur Rata-rata
Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des
Min 21.55 22.63 41.74 22.05 21.51 22.00 22.43 21.97 22.23 22.03 22.03 22.29
Max 32.30 32.37 32.49 32.26 32.14 31.84 32.75 32.36 32.50 31.87 32.04 32.05
Rerata 26.93 27.50 37.12 27.16 26.83 26.92 27.59 27.17 27.37 26.95 27.04 27.17
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DESAIN IRIGASI PERTANIAN
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.3.5.2 Tabel Data Kelembaban Udara
Data : Kelembaban Maksimum
Bulan Kelembaban Maksimum
Tahun Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des1995 86.00 87.00 82.00 88.00 91.00 81.00 96.00 86.00 90.00 84.00 92.00 89.00
1996 95.00 82.00 88.00 81.00 89.00 83.00 91.00 88.00 91.00 93.00 81.00 87.00
1997 93.00 89.00 90.00 92.00 86.00 82.00 88.00 90.00 82.00 91.00 85.00 82.00
1998 98.00 94.00 87.00 82.00 82.00 87.00 87.00 89.00 80.00 97.00 82.00 92.00
1999 97.00 93.00 91.00 95.00 87.00 82.00 80.00 86.00 85.00 94.00 94.00 81.00
2000 91.00 91.00 82.00 91.00 87.00 80.00 82.00 97.00 82.00 80.00 90.00 86.00
2001 90.00 88.00 91.00 90.00 82.00 91.00 80.00 94.00 87.00 92.00 81.00 95.00
2002 89.00 84.00 90.00 89.00 87.00 82.00 87.00 88.00 81.00 85.00 90.00 87.00
2003 82.00 81.00 82.00 81.00 90.00 89.00 85.00 92.00 80.00 81.00 86.00 89.00
2004 80.00 92.00 85.00 80.00 88.00 95.00 82.00 80.00 92.00 83.00 86.00 90.00
Min 80.00 81.00 82.00 80.00 82.00 80.00 80.00 80.00 80.00 80.00 81.00 81.00
Max 98.00 94.00 91.00 95.00 91.00 95.00 96.00 97.00 92.00 97.00 94.00 95.00
Rerata 90.10 88.10 86.80 86.90 86.90 85.20 85.80 89.00 85.00 88.00 86.70 87.80
Data : Kelembaban Minimum
Bulan Kelembaban Minimum
Tahun Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des
1995 60.00 49.00 62.00 48.00 50.00 56.00 45.00 54.00 46.00 47.00 57.00 47.00
1996 67.00 64.00 72.00 43.00 46.00 60.00 67.00 52.00 71.00 56.00 53.00 48.00
1997 71.00 61.00 70.00 65.00 46.00 56.00 48.00 67.00 67.00 67.00 73.00 62.00
1998 49.00 67.00 52.00 70.00 56.00 57.00 45.00 70.00 56.00 68.00 70.00 63.00
1999 60.00 47.00 46.00 67.00 50.00 51.00 58.00 45.00 52.00 45.00 46.00 70.00
2000 67.00 60.00 62.00 56.00 70.00 56.00 74.00 61.00 53.00 46.00 45.00 71.00
2001 64.00 62.00 56.00 46.00 72.00 49.00 76.00 58.00 67.00 72.00 48.00 46.00
2002 50.00 68.00 57.00 48.00 68.00 48.00 65.00 57.00 71.00 70.00 60.00 48.00
2003 61.00 60.00 61.00 62.00 52.00 57.00 49.00 56.00 48.00 56.00 52.00 72.00
2004 70.00 52.00 52.00 56.00 48.00 64.00 54.00 67.00 54.00 48.00 56.00 58.00
Min 49.00 47.00 46.00 43.00 46.00 48.00 45.00 45.00 46.00 45.00 45.00 46.00
Max 71.00 68.00 72.00 70.00 72.00 64.00 76.00 70.00 71.00 72.00 73.00 72.00
Rerata 61.90 59.00 59.00 56.10 55.80 55.40 58.10 58.70 58.50 57.50 56.00 58.50
Data : Kelembaban Relatif (%)
Bulan Kelembaban Relatif (%)
Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des
Min 61.90 59.00 59.00 56.10 55.80 55.40 58.10 58.70 58.50 57.50 56.00 58.50
Max 90.10 88.10 86.80 86.90 86.90 85.20 85.80 89.00 85.00 88.00 86.70 87.80
Rerata 76.00 73.55 72.90 71.50 71.35 70.30 71.95 73.85 71.75 72.75 71.35 73.15
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33.5.3 Tabel Data Rata-Rata Penyinaran Matahari (%)
Data : Rata-rata Penyinaran Matahari
Bulan Rata-rata Penyinaran Matahari (%)
Tahun Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des1995 35.20 45.20 71.20 70.00 27.60 67.70 70.00 39.80 47.20 68.90 45.60 32.30
1996 70.30 38.90 65.10 71.10 45.60 40.20 67.20 62.30 46.80 32.60 35.00 34.00
1997 32.20 71.30 56.10 45.60 32.50 48.90 31.50 65.00 31.20 57.80 24.70 72.00
1998 45.60 45.60 45.60 41.30 45.20 67.00 30.90 36.70 67.00 48.60 38.90 69.20
1999 41.20 35.90 47.30 56.20 41.30 41.30 42.30 29.80 56.80 26.50 43.80 43.20
2000 65.20 51.00 43.00 39.00 39.50 40.60 41.70 64.00 34.50 45.60 56.00 35.60
2001 36.60 36.00 42.00 49.00 58.90 38.90 55.60 71.00 68.20 40.20 59.20 54.10
2002 56.30 67.70 56.00 48.00 39.20 40.40 58.30 43.20 42.20 40.10 38.70 48.30
2003 43.00 40.60 58.20 52.00 65.30 26.40 42.90 40.00 40.20 72.00 57.80 29.30
2004 45.00 56.40 45.60 54.70 45.00 43.40 35.90 42.90 42.90 68.00 38.90 56.20
Min 32.20 35.90 42.00 39.00 27.60 26.40 30.90 29.80 31.20 26.50 24.70 29.30
Max 70.30 71.30 71.20 71.10 65.30 67.70 70.00 71.00 68.20 72.00 59.20 72.00
Rerata 47.06 48.86 53.01 52.69 44.01 45.48 47.63 49.47 47.70 50.03 43.86 47.42
Bulan Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des
n/N% 47.06 48.86 53.01 52.69 44.01 45.48 47.63 49.47 47.70 50.03 43.86 47.42
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33.5.4 Tabel Data Kecepatan Angin
Data : Rata-rata Kecepatan Angin
Bulan Rata-rata Kecepatan Angin (km/jam)
Tahun Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des1995 9.20 15.20 15.00 9.20 5.60 9.80 18.30 12.90 15.00 9.50 4.50 15.00
1996 4.50 14.20 21.80 15.30 4.70 10.50 12.30 14.50 14.90 11.20 12.10 12.30
1997 12.30 11.20 22.00 12.30 9.20 5.40 14.50 8.70 18.70 10.30 8.50 10.30
1998 8.20 10.30 14.50 5.60 11.20 6.70 13.50 7.80 10.30 12.40 6.10 9.50
1999 10.30 11.40 12.70 9.40 17.20 12.00 10.20 9.30 11.40 20.50 11.20 11.30
2000 15.60 7.90 20.30 12.30 15.60 22.30 4.50 8.90 10.60 9.50 10.30 8.60
2001 11.00 12.30 9.30 18.00 11.20 13.20 14.90 5.60 9.80 14.30 15.20 16.50
2002 16.80 8.50 15.80 19.20 9.80 14.70 9.80 7.50 12.60 8.60 6.10 7.30
2003 18.70 7.80 16.20 10.80 10.20 8.50 8.50 10.20 2.60 9.70 3.00 10.90
2004 21.20 15.60 4.50 8.70 16.80 20.10 13.20 21.00 12.00 15.20 12.60 6.50
Min 4.50 7.80 4.50 5.60 4.70 5.40 4.50 5.60 2.60 8.60 3.00 6.50
Max 21.20 15.60 22.00 19.20 17.20 22.30 18.30 21.00 18.70 20.50 15.20 16.50
Rerata 12.78 11.44 15.21 12.08 11.15 12.32 11.97 10.64 11.79 12.12 8.96 10.82
Bulan Jan Feb Mar Apr Mei Jun Jul Agust Sept Okt Nov Des
U12.78 11.44 15.21 12.08 11.15 12.32 11.97 10.64 11.79 12.12 8.96 10.82
Km/Jam
U306.72 274.56 365.04 289.92 267.60 295.68 287.28 255.36 282.96 290.88 215.04 259.68
Km/Hari
U3.55 3.18 4.23 3.36 3.10 3.42 3.33 2.96 3.28 3.37 2.49 3.01
m/detik
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Tabel 4.12 Nilai Yn
n yn n yn n yn n yn
8 0.4843 32 0.5380 56 0.5508 80 0.5569
9 0.4902 33 0.5388 57 0.5511 81 0.5570
10 0.4952 34 0.5396 58 0.5515 82 0.5572
11 0.4996 35 0.5403 59 0.5518 83 0.5574
12 0.5053 36 0.5410 60 0.5521 84 0.5576
13 0.5070 37 0.5418 61 0.5524 85 0.5578
14 0.5100 38 0.5424 62 0.5527 86 0.5580
15 0.5128 39 0.5430 63 0.5530 87 0.5581
16 0.5157 40 0.5436 64 0.5533 88 0.5583
17 0.5181 41 0.5442 65 0.5535 89 0.5585
18 0.5202 42 0.5448 66 0.5538 90 0.5586
19 0.5220 43 0.5453 67 0.5540 91 0.5587
20 0.5235 44 0.5258 68 0.5543 92 0.5589
21 0.5252 45 0.5463 69 0.5545 93 0.5591
22 0.5268 46 0.5468 70 0.5548 94 0.5592
23 0.5283 47 0.5473 71 0.5550 95 0.5593
24 0.5296 48 0.5417 72 0.5552 96 0.5595
25 0.5309 49 0.5481 73 0.5555 97 0.5596
26 0.5320 50 0.5485 74 0.5557 98 0.5598
27 0.5332 51 0.5489 75 0.5559 99 0.559928 0.5343 52 0.5493 76 0.5561 100 0.5600
29 0.5353 53 0.5497 77 0.5563
30 0.5362 54 0.5501 78 0.5565
31 0.5371 55 0.5504 79 0.5567
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Tabel 4.13 Nilai σ n
n σ n n σ n n σ n n σ n
8 0.9043 32 1.1193 56 1.1696 80 1.2938
9 0.9288 33 1.1226 57 1.1708 81 1.1945
10 0.9497 34 1.1255 58 1.1721 82 1.1953
11 0.9676 35 1.1285 59 1.1734 83 1.1959
12 0.9833 36 1.1313 60 1.1747 84 1.1967
13 0.9972 37 1.1339 61 1.1759 85 1.1973
14 1.0098 38 1.1363 62 1.1770 86 1.1980
15 1.0206 39 1.1388 63 1.1782 87 1.1987
16 1.0316 40 1.1413 64 1.1793 88 1.1994
17 1.0411 41 1.1436 65 1.1803 89 1.2001
18 1.0493 42 1.1458 66 1.1814 90 1.200719 1.0566 43 1.1480 67 1.1824 91 1.2013
20 1.0629 44 1.1490 68 1.1834 92 1.2020
21 1.0696 45 1.1518 69 1.1844 93 1.2026
22 1.0754 46 1.1538 70 1.1854 94 1.2032
23 1.0811 47 1.1557 71 1.1863 95 1.2038
24 1.0864 48 1.1574 72 1.1873 96 1.2044
25 1.0914 49 1.1590 73 1.1881 97 1.2049
26 1.0961 50 1.1607 74 1.1890 98 1.2055
27 1.1044 51 1.1623 75 1.1898 99 1.2060
28 1.1047 52 1.1638 76 1.1906 100 1.2065
29 1.1086 53 1.1653 77 1.1915
30 1.1124 54 1.1667 78 1.1923
31 1.1159 55 1.1681 79 1.1930
Tabel 4.14 Nilai YTr
Periode Ulang (Tr) Reduced (Variated) Periode Ulang (Tr) Reduced (Variated)
tahun Ytr tahun Ytr
2 0.3668 100 4.6012
5 1.5004 200 5.2969
10 2.2510 250 5.5206
20 2.9709 500 6.2149
25 3.1993 1000 6.9087
50 3.9028 5000 8.5188
75 4.3117 10000 9.2121
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