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  • Users: cdale
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  1. cdale

    SVE well diameter

    trying to decide if there is a significant benefit of larger 4-inch wells over 2-inch wells for an SVE system. going with 4-inch adds 2-3k to my cost of installation of the wells. i can't find much info to help me decide. what are the other factors should i consider? the borehole...
  2. cdale

    what is my operating pressure?

    ok, have sort of a lame question but here goes... if i have designed a forcemain and sized a pump for the anticipated flow and head conditions, can I convert the calculated feet of head to psi and assume that will be my design operating pressure in the pipeline?? For example, if I calculated...
  3. cdale

    Graded Filter Design cont.

    This is an addtional question/discussion to the original post... The reference materials proved quite useful in the previous thread. I was wondering though, these manuals refer mainly to granualar soil. Does anyone know if the same pricipals should be applied to layering aggregate/rock...
  4. cdale

    Graded Filter Design

    I am working on a project involving an infiltration gallery, also refered to as a very large drainfield. I have done some calculations for the graded filter I need to place between my drain rock and native soil to prevent clogging and I have selected the material I need to put in the gallery...
  5. cdale

    Air Testing HDPE forcemain

    We are putting in an HDPE forcemain. The pipeline will be fusion welded together and I am trying to find out some standard for air testing the pipeline once it is in the ground. The only thing I have been able to find is standards for gravity sewer lines, that doesn't seem to help since I have...
  6. cdale

    Going from pressure flow to gravity flow...

    Can anyone tell me what the implications are of tying into a gravity flow line with a pressure line? I have a main pressure line and I want to put in a bypass to the gravity sewer in case I need to divert some of the flow from the main line... Thanks for your help...
  7. cdale

    VFD's and pumping

    Wondering if anyone has experience using variable frequency drives on centrifugal pumps for pumping out of a tank? I have what is essentially an above ground tank with dimensions of 4 ft I.D. and a water level of 5 ft. I want to pump from this tank with a single centrifugal pump, while...
  8. cdale

    Pumping water from an air stripping tower...

    Wondering if anyone has any experience with pumping effluent directly from an air stripper. Currently the air stripper I am working with gravity drains to the sewer, but I want to install a pump after the tower and pump the water to an infiltration gallery. The flow rate is a constant 160 gpm...
  9. cdale

    "Fitting" an aerial photo into a CAD drawing

    Does anyone know if there is an EASY way to "fit" an aerial photo into a AutoCAD drawing? I am using AutoCAD 2002 and have a pretty accurate drawing of a large site (~1 mile by 3/4 of a mile) that shows some buildings and roads in the area. I referenced in the image of an aerial photo...

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