Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

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

Search results for query: *

  • Users: Evan5
  • Order by date
  1. Evan5

    Flow calc help: non-pressure, tortuous path + pipe size reduction

    Ok...I'll give a run-down of the flow. 1) flows over a weir and dumps down...into a confined area where it... 2) flows into 12" dia corrugated metal pipe, n = 0.022, design Qin = 134.4 cfm, slope = 2%, length = 47' 3) Transition to 10" dia HDPE, slope = 10%, n = 0.012, slope = 10%...goes a...
  2. Evan5

    Flow calc help: non-pressure, tortuous path + pipe size reduction

    Ugh...I need to freshen up. Feel like I'm starting from square one.
  3. Evan5

    Flow calc help: non-pressure, tortuous path + pipe size reduction

    corrugated steel n=0.010?...oops typo, 0.022 Thanks
  4. Evan5

    Flow calc help: non-pressure, tortuous path + pipe size reduction

    Open channel flow: I have a 12" corrugated steel pipe with known flow, Manning's n value 0.010, slope = 0.02. I need to connect a 10" inner diameter HDPE (n = 0.012) that has three 90 degree bends... on a 0.1 slope to the end of the 12" pipe. I'm looking for suggestions on how to tell if the...
  5. Evan5

    Parallel Stormwater Branch Modeling

    I used the 18" pipe outflow & checked the max flow of the smaller pipes using Manning's Eq. Then I divided the 18" design flow by the max small pipe flow....say 10cfs/3cfs = 3.33cfs ....so I'll use four of the small pipes, neglecting minor losses. Using four pipes gives a max flow of 4 x 3 =...
  6. Evan5

    Parallel Stormwater Branch Modeling

    BTW, I have all the flow characteristics of the 18" pipe.
  7. Evan5

    Parallel Stormwater Branch Modeling

    I need to cut an 18" pipe...have it dump into a concrete box with three 10" pipes for outlets. I'm not sure how to model the flows to see if the 10" pipes will cause headwater problems. Thanks in advance.
  8. Evan5

    Does 6" asphalt provide a "constrained" foundation?

    I'm looking at installing a large column foundation in a paved area and I'm referring to the CBC section 1805.7.2.2 where it states: "The following formula shall be used to determine the depth of (foundation) embedment required to resist lateral loads where constriant is provided at the ground...

Part and Inventory Search