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  1. 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...
  2. 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.
  3. 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...

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