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  1. esass13

    Steel Casing Thickness

    Thanks for all the replies.
  2. esass13

    Steel Casing Thickness

    We have plenty of standard casing size and thickness requirements for bore and jack, but we are installing some steel casing for gravity sewer under creeks, etc. via open cut. The install will be pretty shallow from a few feet of cover to the crown exposed. My question is, what casing thickness...
  3. esass13

    Fairbanks Turbo-Free Suction Elbow

    Has anyone had a problem with Fairbanks' (I guess they are Pentair now) Turbo-Free pump suction elbow? I'm having trouble with some pump noise (possible cavitation) and i'm looking any and everything. Thanks.
  4. esass13

    10" Backflow Device Available?

    I have a sump pump pit with pumps to pump water from a bldg. off the site. I also have a 10" gravity drain from the pit to a stormwater basin. The pumps run only when the gravity pipe can't get rid of all the water coming in the pit. The problem now is that we've actually seen water flowing...
  5. esass13

    CIPP in Offroad Area?

    How would a contractor CIPP a sewer line in a hard to access easement? I've seen CIPP work on the street a lot, but we have some easement areas that are rough. I can't believe the contractor could get 1 truck much less several larger trucks down our easement. Is there CIPP equipment available...
  6. esass13

    CIPP Timeframe

    What is a good time frame for completing CIPP work? How much can a CIPP contractor complete in a day's time? Does it depend on the services more than anything? My assumption is a contractor could reline 500 feet or so in a day including replacing about 10 services from cleanout to new...
  7. esass13

    Do high chlorine levels interfer with FerroVer reagent?

    An odd situation, but would a chlorine level of 20-30 mg/l interfer or give a false iron reading from the FerroVer reagent? Thanks
  8. esass13

    Chlorine required to oxidize Fe/Mn

    Thanks bimr. Interesting thread link you posted. One thing, the well water never breaks pressure before hitting the sediment filter so aeration is not an option (at least not for this owner). Any theoretical ? mg/l of chlorine to oxidize 1 mg/l of Fe?
  9. esass13

    Chlorine required to oxidize Fe/Mn

    Anyone have a rule of thumb on how much chlorine is required to oxidize iron in ground water? The iron is all in the ferrous state when leaving the well. I'm looking for something like this: 2 ppm Cl2 for every 1 ppm of iron, or something similar. Not sure if there is a rule of thumb for...
  10. esass13

    Ion Exchange Backwash in a WWTP

    Is there a limit to the amount of brine backwash from an IX filter that can be put in a small WWTP? The filter backwash has high chlorides, TSS, TDS, etc. The WWTP is small and treats about 4,000 gpd. I could dose the backwash water into the WWTP, but at what concenctration levels will the...
  11. esass13

    Sewer Service Laterals and CIPP

    I will be using CIPP to line VCP pipe. A lot of the services are bad and I need a way to connect ex. services to the CIPP (can't just cut our the CIPP to reinstate the service). I found Inserta Tee, which looks like what I need. Does anyone have experience with Inserta Tee or something...
  12. esass13

    Waterline Construction near Curb & Gutter

    jgailla, We're installing new pipe close to the curb and I don't want to give the contractor an idea that he can just tear up the curb and replace by having a high quantitiy estimate. installation is open cut at about 3' to 4' deep with services all along the way. It's in an established...
  13. esass13

    Waterline Construction near Curb & Gutter

    How close can a contractor generally install a 6" DIP beside curb and gutter without tearing up the curb and gutter. I would think a contractor could dig within a foot (or less) of the curb and gutter and not disturb it. thanks
  14. esass13

    How to change shape file attribute precision??

    I think this is easy I just can't find the right button. I've connected (not imported) a s topo shape file with elevation attributes. When I use the Style Editor to display the elevations of the contours, I get this: "12.0000000" instead of "12". I can't find anywhere to change the precision...
  15. esass13

    Saving WaterCAD V8

    Is there a way to save WaterCAD V8 XM back to an earlier version such as version 7? Should Version 7 have any trouble opening a file created or saved in V8 XM?
  16. esass13

    Obsolete Valve Models

    Anyone know how I can find the manufacturer of a 1986 altitude valve. I only have the model # or at least I think that's what is stamped on the vavle. The # is 12009A and that is the only markings on the valve. thanks
  17. esass13

    HDPE Pipe Failure

    Anyone experience an HDPE failure due to heat? We have an above ground installation of 24" and 30" HDPE that should be ok, except that HDPE is greatly derated in the summer heat for exposed pipe. I guess we could paint the black pipe to white to reduce some of the sun exposure and reduce heat...
  18. esass13

    brass or bronze service saddle

    Is there any real difference in using a brass or bronze service saddle on a DIP main? I can't seem to find any good info anywhere. thanks
  19. esass13

    Heat Pump rule of thumb

    is their a rule of thumb for a heat pump ton size required per square foot? Residential home in NC.
  20. esass13

    Suction Baffles Needed?

    How do I determine if baffles are needed in a wet well? I have multiple suction flanges along 1 wall of a rectangle wet well. I see how to calculate all the needed dimensions for a baffle, BUT how do I figure if a baffle is actually needed? thanks

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