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  • Users: RW11
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  1. RW11

    Enery calculation from pipe discharge into flowing stream.

    The estimated exit velocity was based on a submerged outlet. What would be the proper way to calculate the velocity and force on the stream bed 1' below the pipe invert? It would seem that the stream velocity should mute the outlet pipe velocity. The angle of the outlet pipe to the stream is...
  2. RW11

    Enery calculation from pipe discharge into flowing stream.

    Thanks for your input. Your suggestion for using the culvert outlet velocity would be useful if I were discharging into a channel with little to no channel flow, in which case I could make use of standard DOT criteria and equations. My issue is that the flow of water in the stream will mute out...
  3. RW11

    Enery calculation from pipe discharge into flowing stream.

    I have a need to determine if the discharge from a storm drainage pipe into a stream with flowing water should have outlet protection. A 15" pipe outlet is located in a stonewall with an invert approximately 1' above the stream bed. Under design conditions, the water surface elevation in the...
  4. RW11

    Choker Course for Asphalt Pavement

    Runoff will be conveyed via trench drains and perforated piping.
  5. RW11

    Choker Course for Asphalt Pavement

    I have an existing pervious concrete parking lot project that the client is asking to replace with conventional asphalt. I need to utilize the stone base (ASTM #4) for storm water management. I am looking for some ideas as to if a choker course is needed for the asphalt and/or paving equipment...

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