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PDAM Detail Junction

The document details 5 pipe junctions and their components. It then calculates the required reservoir size for a water distribution system. It determines that the reservoir volume should be 1216.156 cubic meters based on the system's average and peak flow rates. The recommended dimensions for the ground reservoir are 22 meters in length, 11 meters in width, 5 meters in depth, with a 0.5 meter freeboard.

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C. A. Ardhani
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0% found this document useful (0 votes)
372 views4 pages

PDAM Detail Junction

The document details 5 pipe junctions and their components. It then calculates the required reservoir size for a water distribution system. It determines that the reservoir volume should be 1216.156 cubic meters based on the system's average and peak flow rates. The recommended dimensions for the ground reservoir are 22 meters in length, 11 meters in width, 5 meters in depth, with a 0.5 meter freeboard.

Uploaded by

C. A. Ardhani
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 4

1.

Membuat detail junction dari 5 node (gambar diambil dari auto cad)
Junction Detail dan Keterangan Junction

Junction 4

P3 Ф152
1. Gate Valve Ф 288 mm (3 buah)
2. Gilboult Joint Ф 288 mm (5 buah)
Tapping Ф 288

P4 Ф305 3. Flange with Thrust Ф 288 mm (2 buah)


4. Tee All Flange Ф 288 mm (2 buah)
5. Check Valve Ф 288 mm (1 buah)
6. Gate Valve Ф 152 mm (1 buah)
7. Meter air Ф 288 mm (1 buah)
P5 Ф254
8. Pipa HDPE Ф 288 mm (2 buah)
9. Bend Flange 450 Ф 288 mm (2 buah)
10. Tee All Flange Ф 288 mm (2 buah)
11. Pipa Ф 254 mm (1 buah)
12. Reducer Ф 254 x 152 mm (1 buah)
13. Increaser Ф 152 x 305 mm (1 buah)
14. Gate Valve Ф 305 mm (1 buah)
16. Increaser Ф 152 x 288 mm (1 buah)

Junction 3

P4 Ф305

Tapping Ф 254

P5 Ф254

1. Gilboult Joint Ф 254 mm


2. Gate Valve Ф 254 mm
3. Tee All Flange Ф 254 mm
4. Increaser Ф 254 x 305 mm
5. Gate Valve Ф 305 mm
6. Gilboult Joint Ф 305 mm
7. Bend Flange 450 Ф 254 mm
8. Gilboult Joint Ф 254 mm
9. Tapping Ф 254 mm

Junction 2

P1 Ф305
P2 Ф152
Tapping Ф305

1. Gilboult Joint Ф 305 mm (2 buah)


P6 Ф305 2. Gate Valve Ф305 mm (2 buah)
3. Increaser Ф 152 x 305 mm (1 buah)
4. Gate Valve Ф 152 mm
5. Gilboult Joint Ф 152 mm
6. Tee All Flange Ф 305 mm
7. Gilboult Joint Ф 305 mm
8. Tapping Ф 305 mm

Junction 6

Tapping Ф 152 P10 Ф152

P7 Ф152
1. Gilboult Joint Ф 152 mm
2. Gate Valve Ф 152 mm
3. Tee All Flange Ф 152 mm
4. CI Pipe with Flange Ф 152 mm
5. Gate Valve Ф 152 mm
6. Gilboult Joint Ф 152 mm
7. Bend Flange 45o Ф 152 mm
8. Gilboult Joint Ф 152 mm
9. Tapping Ф 152 mm
Junction 7

P1 Ф102
P9 Ф152
Tapping Ф 152

P10 152
1. Gilboult Joint Ф 152 mm (2 buah)
2. Gate Valve Ф 152 mm (2 buah)
3. Decreaser Ф 152 x 102 mm
4. Gate Valve Ф 102 mm
5. Tee All Flange Ф 152 mm
6. Gilboult Joint Ф 152 mm
7. Tapping Ф 152 mm

2. Menghitung volume reservoir dan tentukan ukuran bak reservoir

Jumlah Supplai ke pelanggan Pengisian Reservoir


Waktu
Jam (%) (%) Surplus ( + ) Defisit ( - )
00 - 01 1 1 4.16 3,16
01 - 02 1 1 4.16 3,16
02 - 03 1 1 4.16 3,16
03 - 04 1 2 4.16 2,16
04 - 05 1 4 4.16 0,16
05 - 06 1 5 4.16 -0,84
06 - 07 1 7 4.16 -2,84
07 - 08 1 8 4.16 -3,84
08 - 09 1 6 4.16 -1,84
09 - 10 1 6 4.16 -1,84
10 - 11 1 5 4.16 -0,84
11 - 12 1 5 4.16 -0,84
12 - 13 1 4 4.16 0,16
13 - 14 1 4 4.16 0,16
14 - 15 1 5 4.16 -0,84
15 - 16 1 5 4.16 -0,84
16 - 17 1 6 4.16 -1,84
17 - 18 1 7 4.16 -2,84
18 - 19 1 6 4.16 -1,84
19 - 20 1 5 4.16 -0,84
20 - 21 1 3 4.16 1,16
21 - 22 1 2 4.16 2,16
22 - 23 1 1 4.16 3,16
23 - 24 1 1 4.16 3,16
Jumlah 100 100 21,76 -21.92
Pada jaringan pipa distribusi akan direncanakan untuk tahap I (sesuai tahapan
instalasi) :
Q total = 53,7 l/s
Q kebocoran = 10,742 l/s
Q rata-rata = 64,442 l/s = 64,45 L/dtk
Q jam puncak = (64,442 L/dtk) x 1,5 = 96,663 L/dtk

a. Persentase volume reservoir (%)


% = (21,76 + 21,92)/2
= 21,84 %
b. Volume reservoir (V)
Qrata-rata = 64,45 L/dtk
V = 21,84% x Q x t
1 𝑚3
= 21,84% x 64,45 L/dtk x 1000 𝐿 x 1 hari x 86400 dtk/hari

= 1216,156 m3

Dimensi Reservoir
Tipe reservoir adalah ground reservoir dengan volume 1216,156 m3 . Kriteria kedalaman h adalah (3
- 6)m, untuk perencanaan diambil 5 m. Maka luas penampang melintang reservoir adalah :
V 1216,2
Ac  = 5 = 243,24 m2
h
Direncanakan perbandingan P : L = 2 : 1 maka,
P:L=2:1
P = 2L
Lebar bak dapat dihitung sebagai berikut,

Ac 243,24
L = √ 2 = 11,02 m
2
Maka, panjang bak :
P = 2 x 11 m
P = 22 m
Jadi, dimensi reservoir adalah :
Panjang = 22 m
Lebar = 11 m
Kedalaman =5m
Freeboard = 0,5 m

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