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Design of a Wastewater Collection Network for
the New Nablus Area (B)
By
Hatem Abu Asbeh
Mohammad Qamhiya
Sayel At-Torman
Supervisor
Dr. Mohammad N. Almasri
December 2012
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OUTLINEINTRODUCTION
OBJECTIVES
STUDY AREA
METHODOLOGY
RESULTS
COST
CONCLUSIONS
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INTRODUCTION
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OBJECTIVES
ESTIMATE THE
OVERALL COST USING ARCGIS
DESIGN THE SEWER NETWORK
USING SEWERCA
D
ESTIMATE THE
WASTEWATER
GENERATION (LOAD)
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BACKGROUND
Effective WASTEWATER COLLECTION NETWORK
EFFICIENT SOFTWARE
ENGINEERING CONCEPTS
GOOD DESIGN
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STUDY AREA
• LOCATION
• LAND USE
• TOPOGRAPHY
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LOCATION
camp
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LAND USEIt luxurious . residential buildings
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TOPOGRAPHY
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METHODOLOGY
Data collection Network delineation
Quantification ofwastewaterper manhole
Determination ofdesign constraints
Cost estimatesusing GIS
Selection of the study area
Design of thenetwork using
SewerCAD
Conclusionsand
Recommendations
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SELECTION OF STUDY AREAWe selected an area
◦Not served◦Located in Nablus◦Priority for Nablus Municipality◦Availability of data
Facts about our study area1- one-third of the area is sparsely built2- The area is hilly with high range slopes
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DATA COLLECTION
Information from Nablus Municipality about the study area
Street plan Contour map Parcels and buildings distribution
planItems cost
Site investigation
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WASTEWATER GENERATION
WASTEWATER GENERATION
FAMILY PER BUILDING
2
FAMILY SIZE
6
DAILY WATER
CONSUMPTION
100 L/c/d
(WW/W) FACTOR
0.8
HOURLY PEAK
FACTOR
4
INFILTRATION
10%
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MANHOLE No.
7
•
PARCELS SERVED
2
• Each Parcel Contains One Building
BUILDINGS
2 • Two Families per Building
FAMILIES
4 • Each Family of 6 Personnel
PERSONNEL NUMBER
24
•Water Consumption 100 L/c/d
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TOTAL WATER
CONSUMPTION
2400
• WasteWater Factor is 0.8AVE. WW
GENERATION
1920
• Peak Factor is 4
MAX. WW GENERATION
7680
• Infiltration 10 %
INFILTRATION
192DESIGN WW
VOLUME
8448
DESIGN WASTEWATER
VOLUME7872 L/d
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Design and analysis using SewerCAD
Designing a Sewer system by using SewerCAD is
More efficient .
Provides the output in a short duration .
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DATA COLLECTED
A) Maps: (all in AutoCAD format) 1- Contour map for the area 2- Road network 3- ParcelsB) Wastewater related dataC) Design constraints
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Development of the network
Drawing the network using AutoCAD
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PLAN
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Assign manholes loads and extract elevations
Define design constraints
Initial run
Solving warning messages
Final design
PROCEDURES
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Warning messages
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RESULTSDiametersVelocityCover
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8 inch
DIAMETERS
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VELOCITY
0 20 40 60 80 100 120 1400
0.5
1
1.5
2
2.5
3Velocity (Average) (m/s)
Conduit
Ve
loc
ity
(m
/s)
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COVER
0 20 40 60 80 100 120 140 1600
1
2
3
4
5
6 cover
Manhole
Co
ve
r (m
)
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PROFILES
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PROFILES
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COSTQuantity identification using
ArcGIS
Cost calculation
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Quantity identification using ArcGIS
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Cost calculation
Cost ($) Unit Cost Quantity Item
37872 7.9 ($/m3) 4800 (m3) Excavation
95535 29 ($/m) 3300 (m) Sewer line
45724 329 ($/manhole) 140 Manhole (No.)
24874 179 ($/cover) 140Manhole cover
(No.)
27786 21 ($/m3) 1320 (m3) Backfill
69465 21 ($/m) 3300 (m) Asphalt
301256 Total
Cost per kilometer is~ $ 90,000
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ConclusionsOnly 8-inch diameter sewer lines
were used SewerCAD and ArcGIS are
important and efficient to use. Teamwork is critical .
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RecommendationsWWTP ENTIRE AREA SITE INVESTIGATIONS
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Thank you