Water Supply
Water Supply
JUNE
                                        2017
DESIGN REPORT
Date: 19-June-2017
               This is the final design report of “Water Distribution System” for Future
Vision Housing Society. This report consists of complete information including each step of
designing, final results (length, Size, type of pipes) and final drawings (Plans). I used EPANET
software to design water distribution system.
I am confident and fully assured that this design will not only fulfill all the basic
requirements of society but also fulfill the water requirement in emergency.
Your sincerely,
Ali Habib
L1F14BSCE0048
                                               i
                                         Table of Contents
LETTER OF TRANSMITTAL ................................................................................................... I
CHAPTER 1...............................................................................................................................1
INTRODUCTION ......................................................................................................................1
CHAPTER 2...............................................................................................................................5
ASSUMPTIONS .........................................................................................................................5
                                                                       1
         For Water Treatment plant and Disposal Station .......................................................... 8
2.7 AVERAGE DAY W.C: MAXIMUM DAY W.C: PEAK HOURS W.C ........................................ 9
CHAPTER-3 ........................................................................................................................... 10
                                                                   2
          PURPOSE ...................................................................................................................... 17
          LOCATION..................................................................................................................... 17
CHAPTER - 4 ......................................................................................................................... 18
CHAPTER – 5......................................................................................................................... 26
CONCLUSIONS....................................................................................................................... 26
REFERENCES ......................................................................................................................... 29
ANNEXURES .......................................................................................................................... 31
                                                                      3
 CHAPTER 1
INTRODUCTION
     1
                            INTRODUCTION
1.1    BRIEF DESCRIPTION OF HOUSING SCHEME
    LOCATION OF SOCIETY
       Society is located on the left side of Jehlum road and Upper Chenab Canal.
    LOCTION OF TUBEWELLS
        In this Housing Society, I provided two tube wells keeping the condition of load
shedding in mind, one of the tube well is working on Electricity and other one is working on
Diesel -engine. The tube wells are located in a park as shown in Fig-1.
                                             2
        3
FIG-1
    NUMBER AND TYPE OF FACILITIES
       The facilities provided are as follows.
                        TYPE                                NUMBER
                        Plots                                  282
Parks 3
School 1
Commercial Areas 4
Apartments 3
Flats 3
Dispensary 1
Grave yard 1
               The topography of Future Vision Housing Society is almost flat. The maximum
reduce level is 100.8 m and minimum reduce level is 98.0 m. As you can see there is very
small difference in level.
               West side of the society has more reduce level then the Eastern side of the
society in other words society is slightly sloping towards Upper Chenab Canal and Jehlum
road.
                                                 4
 CHAPTER 2
ASSUMPTIONS
     5
                              ASSUMPTIONS
2.1    DESIGN PERIOD
        The design period of Water Distribution System of “Future Vision Housing Society” is
not fixed. Design Period is related to the population, I am taking for design purpose.
      Per capita per day water consumption can be defined as the quantity of water
consumed by one person in one day.
So,
                                           Present           Maximum
                          -
                                          Population         Population
Persons/Plot 7 12
                                             6
2.4   POPULATION AND WATER CONSUMPTION CRITERION
Dispensary 60 (lpcd) 50
   PLOTS:
      Water consumption for plots     =          540 lpcd × 12 persons × 282 plots
= 1827360 L/day
   APARTMENTS:
      Water consumption for apartments =         540 lpcd × 500 persons × 3 apartments
= 810000 L/day
   FLATS:
      Water consumption for flats     =          540 lpcd × 400 persons × 3 flats
= 648000 L/day
   SCHOOL
      Water consumption for school    =          50 lpcd × 200 students
= 10000 L/day
   DISPENSARY:
      Water consumption for dispensary =         60 lpcd × 50 patients
= 3000 L/day
                                           7
    COMMERCIAL AREA
       Commercial area - 1 on plan = 2.3 cm × 0.6 cm = 23 m × 6 m = 138 m2
= 1656 L/day
    OPEN SPACES
        Open spaces include Parks, Grave yard, treatment plant and disposal system. There
is small quantity of water required for these places, (watering the plants in parks).
    For Parks
       Area of Park-1 = 5.1 cm × 1.3 cm = 51m × 13m = 663 m2
Total Area of open spaces = Area of Park + Area of Grave Yard + Area of W.T and D.S
= 4901 m2
= 39208 L/day
                                                     8
2.6    TOTAL WATER CONSUMPTION
       Total W. C = W.C for plots + W.C for apartments + W.C for flats + W.C for s chool +
W.C for dispensary + W.C for commercial area + W.C for open Spaces
                   = 3339224 L/day
                        3339224
                   =                L/sec
                       24 ×60 ×60
= 38.648 L/sec
2.7 AVERAGE DAY W.C: MAXIMUM DAY W.C: PEAK HOURS W.C
       We are using the criterion given by water and sanitation agency (WASA) which is
given below.
*NOTE: All the flows are in L/ sec because input data of EPANET software should be in L/ sec
or in L/min.
                                                9
  CHAPTER-3
DESIGN CIRTERIA
       10
                               DESIGN CIRTERIA
     3.1     DESIGN FLOWS FOR WATER DISTRIBUTION SYSTEM
                                               Number of
Node
 no                                                                Grave   Open
           Houses Parks   Flats Apartments Dispensary Commercial                  School
                                                                    yard   area
 1
 2          13                                 1
 3          17
 4          24
 5           6      1                                                1
 6          10                      1
 7           3                                                                      1
 8          16
 9          12
 10         17
 11         13
 12         16
 13         16
 14         17             1
 15         15
 16         12      1
 17         17                                             1
 18         12             1
 19          6      1      1
 20         11                      1                      2
 21          2                                             1
 22          1                                                              1
 23         11                      1
 24         15
Sum 282 3 3 3 1 4 1 1 1
                                              11
                                                Water Consumption in (liters/day)
Node no                                                                       Grave   Open                               Sum(liters/sec)
          Houses    Parks   Flats    Apartments Dispensary Commercial                         School   Sum(liters/day)
                                                                               yard    area
  1          0        0        0          0         0            0              0        0      0            0                0.000
  2        84240      0        0          0        3000          0              0        0      0          87240              1.010
  3        110160     0        0          0         0            0              0        0      0          110160             1.275
  4        155520     0        0          0         0            0              0        0      0          155520             1.800
  5        38880    5304       0          0         0            0             2496      0      0          46680              0.540
  6        64800      0        0       270000       0            0              0        0      0          334800             3.875
  7        19440      0        0          0         0            0              0        0    10000        29440              0.341
  8        103680     0        0          0         0            0              0        0      0          103680             1.200
  9        77760      0        0          0         0            0              0        0      0          77760              0.900
  10       110160     0        0          0         0            0              0        0      0          110160             1.275
  11       84240      0        0          0         0            0              0        0      0          84240              0.975
  12       103680     0        0          0         0            0              0        0      0          103680             1.200
  13       103680     0        0          0         0            0              0        0      0          103680             1.200
  14       110160     0     216000        0         0            0              0        0      0          326160             3.775
  15       97200      0        0          0         0            0              0        0      0          97200              1.125
  16       77760    13144      0          0         0            0              0        0      0          90904              1.052
  17       110160     0        0          0         0           414             0        0      0          110574             1.280
  18       77760      0     216000        0         0            0              0        0      0          293760             3.400
  19       38880    5576    216000        0         0            0              0        0      0          260456             3.015
  20       71280      0        0       270000       0           822             0        0      0          342102             3.960
  21       12960      0        0          0         0           420             0        0      0          13380              0.155
  22        6480      0        0          0         0            0              0     12688     0          19168              0.222
  23       71280      0        0       270000       0            0              0        0      0          341280             3.950
  24       97200      0        0          0         0            0              0        0      0          97200              1.125
 Sum      1827360   24024   648000     810000      3000        1656            2496   12688   10000       3339224            38.648
                                                                   12
3.2      DESIGN EQUATION USED:
In EPANET software I used “Hazen William” Equation to find out Head losses.
                                                     𝐐 𝟏.𝟖𝟓 × 𝐋
                              HL = 𝟏𝟎. 𝟔𝟓 ×
                                                   𝐂 𝟏.𝟖𝟓 × 𝐃𝟒.𝟖𝟕
Where,
Q = Discharge (m/sec)
C = Roughness Coefficient
 Height of OHR
    Capacity of OHR
We know that.
                                             1
Capacity of overhead reservoir       =           × 3339224 L/day
                                             6
= 556537.333 liters
≈ 557 m3
                                              13
For diesel pump
= 834806 liters
≈ 835 m3
                                             14
    Polyethylene (PE) Pipes
          Except upper mentioned two places all other pipes are Polyethylene (PE) pipes.
          80 mm
          100 mm
                                                15
          150 mm
          200 mm
          250 mm
          300 mm
          350 mm
       The term “cover on pipes” can be defined as the clear distance between ground
surface to the pipe.
    FUNCTION
          The functions of different types of vales are as follows
                                                 16
         To permits the water flow only in one direction
         To drain the sediments from pipes
         To break vacuum and to release entrapped air
         In design two gate valves are provided at the junction of 4 or 3 pipes and one gate
          vale is provided at the junction of 2 pipes.
         One vales provided for each fire hydrant.
         One “Check valve” is provided between OHR and Tube Wells to prevent back flow.
    PURPOSE
                The basic purpose of fire hydrant is to supply
                 water for firefighting.
                Fire hydrants should have at least 2 hose
                 outlets and a larger pump outlet.
                Fire hydrant is provided at 1m-2m from the
                 edge of the road and at least 0.5m high.
    LOCATION
          In this design, I provided one fire hydrant near the
school.
                                               17
        CHAPTER - 4
             18
       DESIGN OF WATER DISTRIBUTION
                  SYSTEM
4.1    EPANET SOFTWARE
EPANET is designed to be a research tool for improving our understanding of the movement
and fate of drinking water constituents within distribution systems. It can be used for many
different kinds of applications in distribution systems analysis. Sampling program design,
hydraulic model calibration. EPANET can help assess alternative management strategies for
improving water quality throughout a system. These can include:
Running under Windows, EPANET provides an integrated environment for editing network
input data, running hydraulic and water quality simulations, and viewing the results in a
variety of formats. These include color-coded network maps, data tables, time series graphs,
and contour plots.
    SALIENT FEATURES
Full-featured and accurate hydraulic modeling is a prerequisite for doing effective water
quality modeling. EPANET contains a state-of-the-art hydraulic analysis engine that includes
the following capabilities:
                                             19
      Allows storage tanks to have any shape (i.e., diameter can vary with height)
      Considers multiple demand categories at nodes, each with its own pattern of time
       variation
      Models pressure-dependent flow issuing from emitters (sprinkler heads)
      Can base system operation on both simple tank level or timer controls and on
       complex rule-based controls.
    LIMITATIONS
       EPANET is a good software for the design of water supply but it has some limitations.
4.2 PROCEDURE
*note: allocate the full area to one node means that full park area, or full apartment should
be allocated to one node.
   5. Now find the discharge at nodes by using water consumption per person, persons
      per plot, and number of plots (same for all other allocated types of facilities) and
      sum them.
   6. Now Launch EPANET.exe.
   7. Start New Project.
   8. Click View>Options to enter Map Options dialogue box and select the notation tab,
      there check all the boxes except the ‘Use transparent text’.
   9. Click Project>Analysis Options to open Hydraulic Options dialogue box. Set Units of
      Flow to ‘LPS’ (Liters per second).
                                             20
10. In the same box enter the ‘Demand Multiplier value’ 2.25 for peak hourly demand.
11. Back drop the plan (map) of the society, by clicking View>Back drop>load select file.
12. Draw the Nodes at their location as you drawn on hard copy map and label them by
    double-clicking on each node and editing its ‘Junction ID’.
13. Now draw the Network links/pipes. The initial point asked by program is the starting
    junction of Link.
14. The next step is to introduce a tank (Over Head Reservoir).
15. Connect the tank to (junction-1) with a (link - 31)
16. Now we have to provide information to the software about each node, pipe and tank
    by double clicking the element and provide information in properties table.
17. Up till now we provided all the basic data to the software.
18. Save the project.
19. Now click on Project>Run Analysis to start Analysis. A ‘Run Status’ message box will
    appear. If Run is unsuccessful then check whether you have not missed any step or
    provided wrong data.
20. When Run is successful then click ‘OK’.
21. Make sure at the farthest ends, the pressure in 15 m, if not change the diameter of
    pipes and again run analysis if you got pressure near 15 m good enough then
    proceed to next step.
22. The next step is to view the results.
23. Report>Full (To generate a report of all results, in Word Format.)
24. Use ‘Map’ tab on ‘Browser’ window for viewing results in color coded form with the
    help of ‘Legend’.
25. Use table format by Report>Table. Select whether you want to view results for
    ‘Network Nodes’ or ‘Network Links’.
                                         21
4.3   DESIGN INPUT DATA
- m LPS
OHR 119.75 -
                                  22
 Input data for Pipes
                                      DIAMETER
    PIPE ID         LENGTH                            HWC
                                    (Hit and Trial)
       -                 m                mm           -
       1                 167              80          140
       2                 59               80          140
       3                 48               80          140
       4                 49               80          140
       5                 90               80          140
       6                 15               80          140
       7                 166              80          140
       8                 41               80          140
       9                 40               80          140
      10                 43               80          140
      11                 55               80          140
      12                 48              150          140
      13                 17              200          140
      14                 16              200          140
      15                 39              150          140
      16                 23               80          140
      17                 114              80          140
      18                 114              80          140
      19                 114              80          140
      20                 114              80          140
      21                 38              100          140
      22                 108              80          140
      23                 40              100          140
      24                 107              80          140
      25                 36              100          140
      26                 55               80          140
      27                 48               80          140
      28                 34               80          140
      29                 40               80          140
      30                 108              80          140
      31                 20              350          100
                               23
4.4     OUTPUT DESIGN DATA
   FOR NODES
                                                DEMAND
       Node ID      ELEVATION   BASE DEMAND                  HEAD      PRESSURE
                                                (Peak hr.)
                       m            LPS            LPS         m          m
                                           24
For Pipes
                                                             UNIT
 PIPE ID    LENGTH   DIAMETER   HWC    FLOW     VELOCITY
                                                           HEADLOSS
              m        mm               LPS       m/s       m/ km
   1         167        80       140   -4.07      0.81       9.34
   2          59        80       140   -3.13      0.62       5.72
   3          48        80       140   1.54       0.31       1.55
   4          49        80       140     -5       0.99      13.63
   5          90        80       140   -4.34      0.86      10.51
   6          15        80       140    2.3       0.46       3.24
   7         166        80       140   -5.04       1        13.87
   8          41        80       140    -2.8      0.56       4.66
   9          40        80       140   -12.91     2.57      79.06
   10         43        80       140   -3.15      0.63       5.79
   11         55        80       140   -13.18     2.62      82.18
   12         48       150       140   -24.02     1.36      11.68
   13         17       200       140   -34.12     1.09       5.51
   14         16       200       140   52.84      1.68      12.39
   15         39       150       140   30.04      1.7       17.68
   16         23        80       140   13.06      2.6       80.77
   17        114        80       140   1.13       0.22       0.86
   18        114        80       140   7.95       1.58      32.24
   19        114        80       140   7.74       1.54      30.64
   20        114        80       140   7.61       1.51      29.71
   21         38       100       140   16.22      2.06      40.66
   22        108        80       140   2.03       0.4        2.56
   23         40       100       140   11.49      1.46      21.49
   24        107        80       140   2.19       0.44       2.97
   25         36       100       140   6.43       0.82       7.33
   26         55        80       140   -5.66      1.13      17.15
   27         48        80       140   -5.35      1.07      15.48
   28         34        80       140   -0.15      0.03       0.02
   29         40        80       140   -1.03      0.02       0.73
   30        108        80       140    2.7       0.54       4.36
   31         20       350       100   -86.96     0.9        3.81
                                25
CHAPTER – 5
CONCLUSIONS
     26
                             CONCLUSIONS
5.1    YOUR VIEWS ON THE DRAWING
        This design work of water distribution system is done with great care and I am
confident that this design will fulfill all the requirements of society without causing any
trouble.
       If someone want to improve this work I would like him to work on new software
called WATER-CAD.
       In this design, we did not do water quality analysis (chlorination demand) on EPANET
software for society, water distribution system.
5.2 SUMMARY
                    Number of Junctions                    24
                      Number of OHR                         1
                     Number of Pipes                       32
                     Number of Valves                      25
                      Number of Fire                        1
                        Hydrants
                        Flow Unit                         LPS
                                            27
5.3   FINAL RESULTS
                             28
REFERENCES
    29
                        REFERENCES
 Analysis and Design of Water Distribution System via EPANET 2.00.12
 http://civilengineerspk.com/water-supply-design
 https://en.wikipedia.org/wiki/EPANET
 https://nepis.epa.gov/Adobe/PDF/P1007WWU.pdf
                                    30
ANNEXURES
31