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  • Users: lKobRal
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  1. lKobRal

    Rain garden

    Hello everyone! Can you tell me where I can find guidelines for manual calculation of the rain garden? Thanks!
  2. lKobRal

    Wooden structures

    Hello everybody! I have a question. What programs do you use to calculate wooden structures? For example, such as a three-hinged arch made of glulam?
  3. lKobRal

    Hydraulic calculation storm sewer network using the Rational method

    Hello! 1. I would like to ask a question about the slopes that are used in the hydraulic calculation of rainwater networks. As far as I understand, the estimated bias of the rainwater drainage network can be accepted by anyone, provided that it provides Vfull>Vmin and Qfull>Qdes For example...
  4. lKobRal

    Rational method

    Please explain what the parameter "Percent Impervious Area" means and how to use it when calculating the runoff coefficient? Why do the values of runoff coefficients for different soil groups (A,B,C,D) differ depending on the land use? Please give an example of calculating the runoff coefficient...
  5. lKobRal

    Hydraulic calculation using the Rational method

    When performing a hydraulic calculation using a rational method, the following question arises: How much can Qfull and Qdes differ? For correct hydraulic calculation, it is necessary that the Vfull≥Vmin. if this condition is not met, how to adjust the slope. Is there any table of normative...
  6. lKobRal

    Influence of rainfall.

    Where can I read about the influence of rainfall on operation of combined sewer system and storm sewer system?
  7. lKobRal

    Ground cover for sewer pipe

    Hydrauliс Design of Storm Sewers says that ground cover for sewer pipe should count like this: surface elevation minus invert elevation minus pipe diameter. So, is ground cover a difference of surface elevation and top of the pipe, or difference of surface elevation and invert elevation? If...

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