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what is your comments about the attached model?

I need to transfer sewage water from a sump to another one by 17450 meters length of 600 mm GRP pipe by gravity using the 89 meters level difference as per this schematic diagram.

what is your comments about the attached model?

Thanks6888.Model1.rar

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  • Hello Mohamed,

    As per your model you are modeling only pressure pipes which discharge water from wet well into outfall through gravity. I see that few elevations are missing. 

    To get the correct picture of your modeling conditions in the profile, can you please update the ground elevation of wet well and elevation of air valve? And re-upload the model? 

    Here is information about modeling air valves, for your reference.

    Modeling Force Mains with Air Valves in SewerCAD (GVF Convex Solver) [TN] 

    Regards,

    Sushma Choure

    Bentley Technical Suppport

  • Model2.rar

    Hello Sushma

    I uploaded the updated model, but i actually confused between:

    1- in wet well

    - Elevation (Base)

    - Elevation (Ground)

    2- in Air Valve

    - Elevation (Ground)

    - Elevation

    Can you please give me the difference between every couple?

    Thanks for support

  • Hello Mohamed,

    Wet well is like a tank whether it is underground or above ground, so the ground level and the base should be assigned to the software to determine the type and shape of this tank.

    In air valves and junctions, software needs the level of the ground level and the invert or crown level of the pipe or air valve, the difference between them is the cover or the cover between the pipe diameter.

    Regarding the model, the height of water column in the wet well is not sufficient to drive the water under static pressure, so it is preferable to transfer this sewage water with gravity line and using manholes.

    I hope this helps.

    Please State your opinion also.

    Thanks

    Answer Verified By: Expert 

Reply
  • Hello Mohamed,

    Wet well is like a tank whether it is underground or above ground, so the ground level and the base should be assigned to the software to determine the type and shape of this tank.

    In air valves and junctions, software needs the level of the ground level and the invert or crown level of the pipe or air valve, the difference between them is the cover or the cover between the pipe diameter.

    Regarding the model, the height of water column in the wet well is not sufficient to drive the water under static pressure, so it is preferable to transfer this sewage water with gravity line and using manholes.

    I hope this helps.

    Please State your opinion also.

    Thanks

    Answer Verified By: Expert 

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