1. Eng. Mona Al-Gharbawi Eng. Ayman Al-Afifi
Lecture 6
Network Layout
By :
Eng. Mona Al-Gharbawi Eng. Ayman Al-Afifi

2. Analysis of the Network
Demographical Data
Topographical Data
Water Consumption
Preliminary Studies
Preliminary Studies
Layout of the Network
Data Entry
Analysis of the Network
Reminder ..

3. Area Study Residential Area Public Area Commercial Area
Agricultural Area
Streets

4. %
Area (m2)
Item
100
641 Duonm
Total Area 81
519,917
Residential Area 3
19,230
Public Area 4
25,640
Commercial Area 2
12,820
Agricultural Area 6
38,460
Industrial Area
Streets

5. Population Density Calculation of total number of residents:
Normal Increase ( using equations)
Example:
- Total Area of Southern Remal = 2,754 Dounm
Total population in Southern Remal in 2002 = 17,500
Total population in Southern Remal in 2008 = 29,300
Hypothetical figures
Statistical Data

6. Continue..
Population in Area under consideration:

7. Population Density Saturation population
Total Residential Area = 519,917 m2
Total number of population under saturation condition = 45, ,918 = 105,639
Towers
(6 floors and more)
Regular Buildings
(5 floors or less)
149,795
370,122
Area 8 3
Avg. no. of floors
140
170
Avg. area of flats (m2)
(149,795/140) x 8
(370,122/170) x 3
# of flats 7
Avg. no. of persons/flat
59,918
45,721
No. of residents

8. Population Density
Therefore, Population density= Population / Total Area = 99,435 / 641,000 = person/m2

9. Allocation steps:
Draw network layout for the target year and pinpoint junctions and pipelines.
Draw areas around the nodes in a way that cover the entire area under consideration.
Determine the water demand type of each junction using the land use map prepared and determine the areas that are served by each junction.
Calculate the number of population served by each junction (using the area and the density)
Calculate the demand of each junction by multiplying the population by the average consumption per capita.
Specify other types of demand and allocate them to the nearest nodes.
The demand of each junction should be multiplied by a coefficient accounts for UFW in the design year.

10. Example:

11. Example:

12. Example 2

13. Network Layout:

14. Area around nodes:

15. Demand over nodes
Domestic Consumption in the design year = 150L\c\day.
School consumption = 3 L\pupil\day
Mosque consumption = 11 L\prayer\day
UFW = 30%
# J
Elevation ( m )
Domestic
School
Mosque
Public
Area
Density
Population Q
# pupils
# Prayers
# Employees
( m² )
( l/d ) J1
10.5
1187
0.155
184
35,880
500
7150
J21
12.3
2331
359
70,005
1000
3900
J22
12.68
4127
640
124,800
1950
J32
14.44
1988
308
60,060
1746
225
11662
184*150*1.3

16. Assignment: Network layout. Area around nodes. Demand over nodes.
Due date: 2 weeks

17. Questions