Upload
harry-syafriandi
View
213
Download
0
Embed Size (px)
DESCRIPTION
sdf
Citation preview
Diket : Volume Lalu lintas harian = 400 Kendaraan ringanCBR tanah dasar = 3.5 %Umur rencana (n) = 10 tahunPerkembangan lalu lintas parkir (i) = 2 %
487.5978 = 488
LEP = 0.16
LEA = 0.195039
LET = 0.17752
LER = 0.17752
DDT =
LHRakhir =
No t I I.t Log t Log I1 2 3 4 5 6 7 81 5 155 775 24025 120125 0.6990 2.19032 10 138 1380 19044 190440 1.0000 2.13993 20 123 2460 15129 302580 1.3010 2.08994 40 96 3840 9216 368640 1.6021 1.98235 60 81 4860 6561 393660 1.7782 1.90856 120 51 6120 2601 312120 2.0792 1.70767 240 30 7200 900 216000 2.3802 1.4771
Σ 674 26635 77476 1903565 10.8396 13.4956
Jenis I (Tallbot)a = 8864.477719 = 8864
b = 52.5465045 = 53
Jenis II (Sherman)Log a = 2.5676
a = 369.4562 = 369
n = 0.413057261 = 0.413057
Jenis III (Ishiguro)a = 609.62583 = 610
b = 1.003423755 = 1
No tI I ΔI I ΔI I
Data Tallbot |3 - 14| Sherman |3 - 16| Ishiguro1 2 3 14 15 16 17 181 5 155 154 1 190 35 1882 10 138 142 4 143 5 1463 20 123 122 1 107 16 1114 40 96 96 0 81 15 835 60 81 79 2 68 13 706 120 51 51 0 51 0 517 240 30 30 0 38 8 37
1.23 13.22
Lo = 14 mA = 230.3Ld = 16.45 m
nd = 0.016 (Permukaan aspal)k = 0.9S = 0.005Vd = 0.75 m/det (Asumsi)
I2 I2t
ΔInr
to = 1.381564341 dettd = 21.93333333 det
tc = 23.31489767 (Waktu konsentrasi) (det)
Intensitas Curah hujan yang digunakan adalah :
I = 167.4593992
Debit air yang akan melewati saluran horizontal adalah :
Q = 0.009641475
Dimensi penampang saluran horisontal :
Diambil : b = 0.1 m A = 0.1 x hn = 0.016S = 0.005 Q = V x 0.1 x h
h = 0.1286 m
Kontrol dengan rumus manning :
R = A/P = 0.036
V = 0.481823966 OK !!!!
Faktor tinggi jagaan (F)
F = √C.h C = 1.5
F = 4.391235568 cm
Tinggi total saluran adalah = 17.24654 cm
Jadi didapat :
b = 10 cmy = 17.24653545 cm
Dimensi penampang saluran vertikal :
Diambil : Q = 0.0096m = 0.9g = 9.81d = h = 12.855
b = diameter = 7.4207 cm
Dipakai dimensi saluran vertikal : 7.4207 cm
m3/det
Log t . Log I9 10 11 12 13
1.5310 0.4886 2.2361 346.5905 53721.53322.1399 1.0000 3.1623 436.3943 60222.41582.7190 1.6927 4.4721 550.0727 67658.94493.1757 2.5666 6.3246 607.1573 58287.10183.3936 3.1618 7.7460 627.4233 50821.28753.5503 4.3230 10.9545 558.6770 28492.52743.5159 5.6654 15.4919 464.7580 13942.7400
20.0254 18.8981 3591.0732 333146.5506
ΔI|3 - 18|
19
338
12131107
12.04
(Log t)2 t I .√ t I 2√ t