The site is a 1.5 acre parking lot draining into an existing natural detention basin (wetland). The regulatory authority would like to see a stormwater interceptor installed for separation of oils and sediments. The main problem is only 1.2 feet of available fall from pavement to wetland. The...
We've done a few base maps for bottoms of lakes and reservoirs using an EDM, shooting to a man in a float tube, holding a prism and a cloth tape with a weight on the end. The EDM and prism give the location, the tape and weight give the depth, which we subtract from the lake elevation to get...
er' yes, as the politicians would say, I "mis-spoke", your loads "are not" that high.
yeah, like I said in the first post, sometime you can dump a lot of rock into one of these mucky spots before it starts to firm up, and it can get expensive, especially if rock is not...
In similar situations, we have dumped large rock (sometimes alot!) into the muck, then covered with geotextile fabric, then aggregate base; or we might place drain rock over the fabric, then more fabric then aggregate base. You may be able to us geotextile alone with a geotechnical...
Try modeling as a very tall, small diameter gravity tank. Top elevation to match your elevation + pressure head when full; bottom elevation to match elevation + pressure head when empty; volume to match your tank volume.
I'm staying out of the rest of this discussion...
Interesting website. From what it says the closed containers can also exibit this effect. While I don't remember that happening in my very uncontrolled experiment, that makes the whole phenomenon even stranger.
This actually works. I read about it many years ago and had to try if for myself. Try it in your freezer, with a bowl of hot water versus a cup of cold water. The hot water will actually freeze first. However, there will be less ice in the hot water cup than the cold water bowl. As I...
Thanks for all the responses. We found a well driller who can supply a meter and pressure gauge to test the well, for a few hundred dollars. I think this is the only way we would be able to generate a pump curve.
Offset stakes can be set from the radial stakeout points as described in the post. The offsets can be set by the surveyor or by the contractor (the contractor can then put them where they work best for him). Of course grades must go on the offset stakes, or be moved to them by the contractor...
There are a number of fillers which can be added to epoxy, the cheapest being a commerical grade of wood sanding dust. Chopped and milled fibers can also be added for strength, fumed silica for work-ability. Fillers are a good idea as they can add alot of thickness to your epoxy coat for a lot...
Why use stationing at all? Stationing works great for roadways, but with modern EDMs, CAD drawings and coordinate based layout programs, stationing as a layout procedure is becoming obsolete. You can show the lengths of each run of sewer line on your plans. The contractor can base his price...
We need to measure the flow and pressures at a pump discharge. The pump is an old turbine style irrigation well pump which pumps through a gate valve and approximately 50 foot in length of old rusty 10 inch steel line, which then empties into an irrigation ditch. The pump is a older Western...
Probably will have little effect. The chlorine residual of treated city water should be less than 1 part per million, not high enough to seriously effect the "bugs" in your septic tank. 1000 gallons of treated water a week into a septic system is pretty minor.
There are treatment...
