Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by Ryb01

  1. Ryb01

    Need a second pair of eyes on a couple of HEC-RAS files

    Hi Beej67, May have found the issue.....please see the attachment below. Looks like the cross section geometry has changed quite significantly from existing conditions. The reduction in conveyace area would certainly be attributed to the increase in water surface elevations. Not sure if the...
  2. Ryb01

    Need a second pair of eyes on a couple of HEC-RAS files

    Hi beej67, Agreed on showing the increase in water surface elevations. I'm also seeing an increase at X-Section 22845. The model is showing a decrease in the E.G slope (proposed vs existing) at these sections which would make sense for the water surface increase. An item for consideration…...
  3. Ryb01

    Importing additional tributary to existing HEC-RAS channel system

    The import will not update the reach if the naming convetion of the reaches are different. I would try to ensure that the naming convention is the same and try to re-import. There is no snap tool in HEC-RAS but if you are editing the geometry of the reach by adding or moving points, you simply...
  4. Ryb01

    Energy Dissipation in Buried Culverts?

    Maragavich, You may be missing the bigger picture. True, there would not be creek invert tranistion if the inverts are burried but there is velocity increase accosiated with flows through the culvert barrel in comparison to velocities expereinced further downstream of the crossing where flows...
  5. Ryb01

    Problems with HY8 - Opem Bottom Arch Culverts

    Msullics, Not sure if it's a glitch in your HY-8 or not but....try addinng a constant elevatio of say 100.0m to each of your elevations and see what happens. Based on your information provided the profile should look something like...
  6. Ryb01

    Problems with HY8 - Opem Bottom Arch Culverts

    Mike, If you could provide details on what issues you are having, the users of this forum have a vast knowledge base and would be able to point you in the right direction.
  7. Ryb01

    Floodline downstream of a bridge

    If the flows in the creek do happen to overtop the road, it is possible for the flows to be directed immediately bank to within the top of banks on the downstream side of the bridge. However, before being sold initially on the modelling results, I would re-check the coding of the bridge as per...
  8. Ryb01

    modelling culvert network in hec-ras

    bertieboo, You can't model a storm sewer network like this within HEC-RAS. I would be inclined to model the storm sewer network using a program like SWMM. You can also code in sections of channel at the downstream limits if needed. The visual HGL within SWMM would be a good idication of how the...
  9. Ryb01

    Flood from high tides

    agreed on the Tideflex.
  10. Ryb01

    putting in a bend in HEC-RAS

    poopencholie, If there is a concern about looking into losses associated with bends in a culvert, HEC-Ras is probably not the best tool to use. To my knowledge you cannot account for these types of losses in HEC-Ras. I would recommend using SWMM. You can account for the bend losses directly in...
  11. Ryb01

    How do I measure the gradient of a winding culvert?

    pilesmakesmiles, Following the past posts, a few things of note... 1)beej67, thank you for your earlier post. Crawling through a culvert, is not a good idea. I understand the intent, however, not something I'be recommending anytime soon. If there has already been a culvert collapse, what's to...
  12. Ryb01

    Question about HY-8

    ENGTitian, You're inlet and outlet station represent the profile stations of your culvert. If these stations are unknown, you could set the stations to your culvert length (i.e.0+00 to 0+015, Length of 15'or 15m depending on your units) Rise= culvert height. You will need to confirm what the...
  13. Ryb01

    HEC RAS OUTPUT

    Refer to Chapter 2 of the HEC-Ras Hydraulic Reference manual.
  14. Ryb01

    IDF A,B,C Coefficients vs SCS Storm Distribution

    Thank you Peter. Your help is much appreciated.
  15. Ryb01

    IDF A,B,C Coefficients vs SCS Storm Distribution

    Hi Psmart, Yes agreed, however, would it be possible to create, for example a 100-year Chicago storm to a 100-year SCS? My thoughts would be you would have to do a bit of math to break down the Chicago storm into unit intervals to be determine a total rainfall depth and then apply to the SCS...
See more

Part and Inventory Search

Back
Top