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Recent content by mes11

  1. mes11

    Floodplain Delineation Class

    I wanted to see if anybody knows of any classes that go over floodplain delineation and/or doing the LOMR or CLOMR applications. I've been looking around and haven't seen too much. I would be able to go just about anywhere in the continental US if the class is good enough to warrant it...
  2. mes11

    Dewatering Bags/Silt Bags

    Just wondered if anybody has used the dewatering bags that you can pump sediment laden water into and it filters it out and allows the clean water to pass through. I have not had to use them yet and wanted to know how effective they are, how much water can be passed through them before they...
  3. mes11

    Submerged Storm Pipes

    Twinkie, I'm modeling 1 through 100 year storms. Fortunately, since they wanted this as a water feature I was able to oversize the pond and keep the peak elevation for all the storm events below the catch basin grates.
  4. mes11

    Design storm for detention facility

    How does volume weighting provide a "better" or more accurate design. Aren't you using the same curve numbers either way you do it?
  5. mes11

    Submerged Storm Pipes

    gbam, yes this would a wet basin. sam74, unfortunately the point that this pond discharges to is only about 4 feet lower than the catch basin grates. That's after raising the building finish floor about 2-2.5 feet above existing grade. There is talk now of making this a dry basin instead...
  6. mes11

    Submerged Storm Pipes

    Working on a project where we have limited depth to the point where storm sewers lack typical cover and are even not fitting into catch basin structures. The client wants to have a retention basin as an aesthetic feature on site. One way to remedy the storm sewer elevations would be to lower...
  7. mes11

    Buried bends in storm drain piping

    I would have the manhole installed as well. Your pipe diameter could play an important roll in the systems performance as well. The smaller the diameter your using, the higher the chance for sediment accumulation you may have. Keep your pipe velocity at least 3 ft/sec or slightly higher. I...
  8. mes11

    Swale Ground Cover

    Is there any research out there about using moss as a ground cover for a swale. Generally if you're in a shady, moist location and you have an acidic soil you can establish moss growth. Just wasn't sure if it has the ability to hold up to slow or moderate running water and what kind of root...
  9. mes11

    Directional Bore Pipe Sizes

    Thank you guys. The current proposal also had two lift stations that would be at each end of the 700' feet I was referencing. So there was also another motive to eliminate the furthest lift station as well. I know the force main could be done by HDD.
  10. mes11

    Directional Bore Pipe Sizes

    Can a sanitary sewer be directionally bored under truck docks with the end result being a gravity sanitary sewer line? Pipe size would need to be 6" or 8". Length of the bore/pipe would end up being about 700 feet. I am trying to avoid tearing up trucks by installing an open cut sanitary...
  11. mes11

    Alternatives to Small Orifice

    Seems like most projects I design end up with a small orifice to meter the water quality volume. I need to find some alternatives for these small orifices. 95% of our projects are designed with an extended-dry detention basin for stormwater management. Therefore, a reverse flow pipe isn't an...
  12. mes11

    Underground Storage for Detention

    I've got a pretty limited depth for this system. 12" of cover and then my pavement section. We are using HDPE for the material.
  13. mes11

    Underground Storage for Detention

    Have a project where we will have a small amount of underground storage serving as part of our detention system. It will be 5 runs of 18" diameter pipe (double wall w/ corrugated exterior and smooth interior) and each run is 200 feet long. Looking at the how the manifolds were constructed...
  14. mes11

    Connecting 12" Main to Existing 12" Main

    Thanks guys. You touched on my concerns as far as tapping a 12" line with a 12" tap. I like the idea of using an 8" tap to a 12" reducer. The head loss seems reasonable and since it's creating a loop the pressure in both existing lines should still improve.
  15. mes11

    Connecting 12" Main to Existing 12" Main

    Have a project where they want to loop the water line from one street with a 12" line to a cul-de-sac with a 1o" line. The proposed water line will be 12". When tapping to the existing 12" line, is it easier/better to use a tapping sleeve and valve or shut the line down and install a 12"x12" tee?
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