| TD |
=
m |
1 |
JUMLAH BENTANGAN |
| TJ |
=
m |
|
b1 |
= 1,5 x = m |
C |
|
|
b2 |
= 1,5 x
=
m |
a |
=
m |
|
L |
= a + b1 + b2 + 2c |
BT |
=
m |
|
|
= +
+
+
(2 x ) |
T |
=
m |
|
|
= m |
K |
=
m |
|
JPJ |
= L |
| |
|
|
|
3,05 |
| |
|
|
|
=
m |
| |
|
|
|
3,05 |
| |
|
|
|
=
m di bulatkan
petak |
TD |
|
|
|
=
|
TJ |
|
|
|
|
C |
= Rol ayun- plat dasar 0,75-1,00 |
2 |
JUMLAH HIDUNG PEMBANTU (HP) |
a |
= Lebar sungai |
|
HP |
=
Jumlah Petak + 1 |
T |
= Tonase Kendaraan |
|
|
2 |
b1 |
= Prisma Gugur tepi dekat |
|
|
=
+ 1 |
b2 |
= Prisma gugur tepi jauh |
|
|
2 |
L |
= Jumlah bentangan |
|
|
=
Petak |
JPJ |
= Jumlah Petak Jembatan |
|
|
= Gaing
Cm |
K |
= Lantai Kelas |
|
|
|
BHP |
= Berat hidung pembantu |
3 |
KEBUTUHAN ROLL AYUN |
BJ |
= Berat Jembatan |
|
BJ |
= Jumlah petak x Lantai kelas |
BT |
= Beda Tinggi |
|
|
=
x
=
Ton |
| |
|
|
BHP |
=
ton |
| |
|
|
ROL |
= Berat jembatan + Berat hidung pembantu |
| |
|
|
|
Daya sangga roll ayun |
| |
|
|
|
=
ton +
ton |
| |
|
|
|
15 |
| |
|
|
|
=
= Roll ayun |
| |
|
|
|
|
| |
|
4 |
KEBUTUHAN DONGKRAK |
| |
|
|
|
= 1/2 Berat Jembatan |
| |
|
|
|
Daya sangga |
| |
|
|
|
= 1/2 X
|
| |
|
|
|
7,5 |
| |
|
|
|
=
di bulatkan
buah dongkrak |
| |
|
|
|
|
| |
|
5 |
KEBUTUHAN SKALEM |
| |
|
|
|
= Beda Tinggi + Gaing |
| |
|
|
|
=
cm +
cm |
| |
|
|
|
= cm =
m di bulatkan
|
| |
|
|
|
=
+
= Skalem |
| |
|
|
|
|
| |
|
6 |
KEBUTUHAN MATERIAL PADA JEMBATAN
PETAK
|
| 1 |
Panel
|
|
10 |
Plat dasar |
| 2 |
Gelagar Lintang
|
|
11 |
Papan Lantai |
| 3 |
Gelagar lantai Dalam
|
|
12 |
Balok Penggapit |
| 4 |
Gelagar Lantai Luar
|
|
13 |
Topang sisi |
| 5 |
Gelagar Rambatan Dalam
|
|
14 |
Topang Angin |
| 6 |
Gelagar Rambatan Luar 4 |
|
15 |
Cakar ayam |
| 7 |
Tiang ujung Jantan
|
|
16 |
Baut Panel |
| 8 |
Tiang Ujung Betina |
|
17 |
Baut Kombinasi |
| 9 |
Bancik Pemasangan |
|
18 |
Mur Baut Balok Penggapit |
| |
|
|
|
|
| |
|
7 |
PERHITUNGAN MOMENT |
| |