commit to user
Elevasi d = Elevasi PV
1
+ ¼ Lv x g
2
+ y = 100,53 + ¼ 66,67 x 0,74 + 0,012
= 100,665
m Elevasi e
= Elevasi PV
1
+ ½ Lv x g
2
= 100,53 + ½ 66,67 x 0,74 =
100,777 m
2. PV
2
.
Gambar 3.9. Lengkung Vertikal PV
2
74 ,
74 ,
2 3
= −
= −
= ∆
g g
Perhitungan Lv : e.
Syarat keluwesan bentuk m
V Lv
48 80
6 ,
6 ,
= ×
= ×
=
f. Syarat drainase
m Lv
60 ,
29 74
, 40
40 =
× =
∆ ×
=
g. Syarat kenyamanan
m ik
jam km
t V
Lv 67
, 66
det 3
80 =
× =
× =
a b
c d
e g
3
= 0
g
2
= 0,74
commit to user
h. Pengurangan goncangan
m V
Lv 16
, 13
360 74
, 80
360
2 2
= ×
= ∆
× =
Diambil Lv terbesar, yaitu = 66,67m
m Lv
Ev 06
, 800
67 ,
66 74
, 800
= ×
= ×
∆ =
m Lv
X Y
02 ,
67 ,
66 200
67 ,
66 4
1 74
, 200
2 2
= ×
× ×
= ×
× ∆
=
Stationing lengkung vertikal PV
2
Sta a = Sta PV
2
–
1 2
Lv = 0+800 –
1 2
66,67 = 0+766,67 m
Sta b = Sta PV
2
–
1 4
Lv = 0+800 –
1 4
66,67 = 0+783,33 m
Sta c = Sta PV
2
= 0+800
m Sta d = Sta PV
2
+
1 4
Lv = 0+800 +
1 4
66,67 = 0+816,67 m
Sta e = Sta PV
2
+
1 2
Lv = 0+800 +
1 2
66,67 = 0+833,33 m
Elevasi Lengkung vertikal: Elevasi a
= Elevasi PV
2
– ½ Lv x g
2
= 103,47 – ½ 66,67 x 0,74 =
103,223 m
commit to user
Elevasi b = Elevasi PV
2
– ¼ Lv x g
2
– y = 103,47 – ¼ 66,67 x 0,74 – 0,015
= 103,362
m Elevasi c
= Elevasi PV
2
– Ev = 103,47 – 0,06
= 103,41 m Elevasi d
= Elevasi PV
2
– ¼ Lv x g
3
– y = 103,47 – ¼ 66,67 x 0 – 0,015
= 103,455
m Elevasi e
= Elevasi PV
2
– ½ Lv x g
3
= 103,47 – ½ 66,67 x 0 =
103,470 m
3. PV
3
.
Gambar 3.10. Lengkung Vertikal PV
3
20 ,
20 ,
3 4
= −
= −
= ∆
g g
Perhitungan Lv : a.
Syarat keluwesan bentuk m
V Lv
48 80
6 ,
6 ,
= ×
= ×
=
b. Syarat drainase
m Lv
8 20
, 40
40 =
× =
∆ ×
= a
b c
d e
g
3
= 0 g
4
= 0,20
commit to user
c. Syarat kenyamanan
m ik
jam km
t V
Lv 67
, 66
det 3
80 =
× =
× =
d. Pengurangan goncangan
m V
Lv 56
, 3
360 20
, 80
360
2 2
= ×
= ∆
× =
Diambil Lv terbesar, yaitu = 66,67m
m Lv
Ev 02
, 800
67 ,
66 20
, 800
= ×
= ×
∆ =
m Lv
X Y
004 ,
67 ,
66 200
67 ,
66 4
1 20
, 200
2 2
= ×
× ×
= ×
× ∆
=
Stationing lengkung vertikal PV
3
Sta a = Sta PV
3
–
1 2
Lv = 2+250 –
1 2
66,67 = 2+216,67 m
Sta b = Sta PV
3
–
1 4
Lv = 2+250 –
1 4
66,67 = 2+233,33 m
Sta c = Sta PV
3
= 2+250
m Sta d = Sta PV
3
+
1 4
Lv = 2+250 +
1 4
66,67 = 2+266,67 m
Sta e = Sta PV
3
+
1 2
Lv = 2+250 +
1 2
66,67 = 2+283,33 m
commit to user
Elevasi Lengkung vertikal: Elevasi a
= Elevasi PV