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soil vapor extraction...

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...

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...

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...

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...

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...

JStephen... Good observation, but right now we currently discharge 160 gpm to the gravity sewer. Any discharges in the future will only be a portion of that, if any... My question is more along the lines of, is it possible to discharge from a pressure line into a gravity line? And is it as...

To respond to Montemayor... The fluid is clean water that would otherwise be going to an infiltration gallery. The infiltration gallery will accept 160 gpm. If our flow increased to 180, for example, I want to be able to divert 20 gpm to the gravity sewer. The forcemain is 4 inch HDPE, the...

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...

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...

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...

IRstuff...you can stretch things in AutoCAD, but I don't think you can do it with an image. As far as I am aware, all you can do is straight scale the photo up or down, unless you have an AutoCAD add on program like "Raster Design"...thanks for the tip I will check out IRFAN... MEM1...it is a...

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...

I have a similar question as yours, I checked out the link provided by glenns I was wondering if you ended up using the equation provided in that text? If not what did you do and how is your project working out?