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  1. peter246

    Using Sampler With No Internet Connection

    Ok, thanks for the quick reply!
  2. peter246

    Using Sampler With No Internet Connection

    Can we use the sampler without an internet connection, or is it required now?
  3. peter246

    how to empty detention pond thru gravity if outfall is higher elevation

    basically, you cannot do this by gravity (unless you could set up a siphon situation, which would be tricky to engineer/justify). even a siphon would probably not meet regulatory requirements. pipe through the berm is the most common way, typically with a concrete structure within the pond to...
  4. peter246

    CAD Efficiency

    regarding UCS, learn how to save different UCS's and views... makes it easier to switch between UCS/views that you need.
  5. peter246

    Impervious areas - connected or not connected?

    Thanks Bill for a great question, and thanks to Terry and Kevin for the great follow up! I've been at stormwater for a while and haven't quite grasped this subtlety 'till now. Having the documentary backup, along with engineering judgement and consideration of regulatory requirements is key :)
  6. peter246

    Earthquake in Bay Area/San Jose not an Earthquake?

    I remember one relatively small quake in Eureka, CA in the early '90's that really illustrated the P- and S- waves... (i was driving elsewhere in CA during the 'big' one in 1994, so didn't notice it at all when it happened). I was doing the dishes in my apartment, and suddenly felt woosy (it...
  7. peter246

    Conversion of *.las file to a *.dwf or *.dwg file

    If you have Civil3D https://knowledge.autodesk.com/support/autocad-civil-3d/getting-started/caas/CloudHelp/cloudhelp/2016/ENU/Civil3D-Tutorials/files/GUID-D12A9FB0-D176-4EF9-B779-043D03D626D7-htm.html I don't believe vanilla autocad can do it.
  8. peter246

    Runoff from solar arrays

    In the one project that I've been involved with, the panels were ignored by the regulators - mainly because the total disturbance was less than the SPDES threshold, and overall runoff patterns weren't being changed. I really appreciate seeing the MD guidance for future projects that will...
  9. peter246

    UL Files Withdrawn

    good info - thank you. UL was understandably cagey when I posed the question to them...
  10. peter246

    UL Files Withdrawn

    Thanks for the reply. (p.s. no other certification marks)
  11. peter246

    UL Files Withdrawn

    Hello, I attempted to obtain the UL Listing Report for a specific product using the stamped number on the UL-142 label. UL replied that the files were withdrawn over 5 years ago and will not provide any further information. I understand that there are many reasons for files to be withdrawn, and...
  12. peter246

    Consequences of a Deflected Pipe?

    thanks for following up! the post is an interesting read...
  13. peter246

    NRCS (SCS) vs Clark UH Methods

    http://www.knoxcounty.org/stormwater/pdfs/vol2/Vol2%20Chap%203%20Stormwater%20Hydrology.pdf
  14. peter246

    Equipment Housing in Floodplain Help!!!

    If you haven't, ask the railroad - I assume you'll be needing their signoff of your design. They should be able to tell you all that applies. Having never done railroad infrastructure permitting/design, I'm not sure what else would be applicable, but I would check federal/state requirements...
  15. peter246

    Stormwater regulations vs a rural property

    that's correct - if subject to local/state/federal stormwater permitting, you'll need a PE for the final submission. i recommend finding out exactly what you're required to do first - you may not even have to perform any analyses. p.s. rainbarrels or a cistern are also often acceptable...
  16. peter246

    Stormwater regulations vs a rural property

    what are your local and state stormwater requirements? typically, construction/ground disturbances over a certain size (depending on location) are subject to requirements for: [ol 1] water quality (can be accomplished by raingardens); water quantity (typically by detention); and Best...
  17. peter246

    HydroCAD Hydrograph Peak Issues in Link Nodes

    on another point, 94.33 cfs is only 0.03% different than 94.30 cfs, and the peak still occurs at the same time. I would expect the end results would be darn nearly the same whether the triangular or interpolated hydrograph were used...
  18. peter246

    SWPPP pre and post watershed analisys in HydroCad

    yes, to correct the final area in the report, split the HCAD file into two files - one for the existing conditions model, and then one for the proposed. if you are comfortable editing the file by hand, you can edit it in NOTEPAD or any other text editor. otherwise, it would only take but a...
  19. peter246

    NYS SWPPP Question

    but you still might not be able to accomplish the Runoff Reduction just by doing that.
  20. peter246

    NYS SWPPP Question

    correct. The Design Manual states the design parameters.

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