Faculty Of Engineering
Civil Engineering Department

    Design of a Wastewater and Stormwater Collection Networks for Part of Ya’bad Village
 
Graduation Project  2
Prepared by:
Alaa’ M. Hirzallah 
Noor M. Alshiekh 
Supervised by:
Dr. Mohammad N. Almasri




Outline :

Introduction. 
Objectives and justifications of the project.
Methodology (SewerCAD and StormCAD)
Hydraulic background
 Design
Results
Recommendations












2

Introduction:
Water is the vain of life .                  






  


  


Objectives:
 

Wastewater Collection Network
Stormwater Collection Network


Methodology

















Hydraulic background:

Manning’s equation is to be used to design gravity pipe lines:



 Rational method equation is used to estimate the amount of flow coming out of the catchment:



 A non-homogenous catchment contains more than one land type, and in such cases a weighted equivalent runoff coefficient is used:
                                                                         

Time of concentration is calculated using Kirpich equation:









How  did we calculate the loads ?

 Using GIS, we drew sewersheds for each manhole in the network.

We calculated each area served by using the Calculation Geometry function in GIS.









How  did we calculate the loads(For WW collection network) ?















Constrains (For WW collection network ):









Rational Method:
 
The rational method is a simple formula for the estimation of peak flow rate from small urban and rural catchment areas such as Ya’bad Village.
 

It depends on :
 Frequency.
Rainfall intensity
Runoff coefficient



Rainfall Intensity:






Runoff coefficient:

Is a ratio between the runoff volume and the average rate of rainfall depth over a given duration.


The C values we used in our design:
Streets = 0.8
Olive trees = 0.3
Residential areas = 0.7
Cemeteries = 0.2






How  did we calculate the loads(For stormwater network ) ?
Using GIS, we drew catchments for each catch basin in the network depending on elevations, in order to calculate their areas. 
We calculated each area using the Calculation Geometry function in GIS.







Calculating Runoff Coefficient, C






Calculating time of concentration, Tc





Runoff coefficient Excel table
Time of concentration Excel table


Input data in StormCAD:




1. Started by placing the catch basins and connecting them with conduits.
2. Identified the ground elevations of the catch basins by TRex function using the contour shapefile.

3. Identified sizes of the diameters for the conduits, cross-section type and the material used for the conduits.








4. Identified an Inlet from the inlet catalog, where we used Grate for inlet type.




6. Entered the IDF table for Ya’bad Village 
7. Chose the Global Storm Event to occur every 2 years







Constrains ( For Stormwater collection network):


Results (Wastewater Collection network):























Results (Stormwater Collection Network):


















Profiles:



Recommendations:

Based on the results we obtained, we recommend to use the data collected and processed when considering to apply a design of a wastewater and a stormwater collection networks.

We recommend to study and select a location for a wastewater treatment plant and design it.

We recommend to study the obstacles that could be faced during the construction of the network.


Thank You


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