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 JAE 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 lKobRal

  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

    Thank you! I'll try it!
  3. lKobRal

    Wooden structures

    I understand this. I wanted to hear the names of the programs that implement this in the most convenient way. For example, I set the frame , set the material (which is already packed into the program ), applied loads, and after analyzing the program gave me the optimal cross sections, stresses...
  4. 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?
  5. lKobRal

    Hydraulic calculation storm sewer network using the Rational method

    Thank you for your answer. I'm interested in slopes for sewer networks. I know about the minimum slopes and the fact that they are regulated by the minimum speeds that prevent the formation of sediment in the pipeline. But I'm not interested in the minimum biases, I'm interested in the biases...
  6. lKobRal

    Rational method

    Thank you for your answer. I'm interested in slopes for sewer networks. I know about the minimum slopes and the fact that they are regulated by the minimum speeds that prevent the formation of sediment in the pipeline. But I'm not interested in the minimum biases, I'm interested in the biases...
  7. 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...
  8. lKobRal

    Rational method

    To get a runoff coefficient for an area with a variety of items, perform a weighted average based upon the land use types. For example, if your watershed consists of 65% High-density Residential, 5% park (Open Space), 25% commercial and 5% interstate; the runoff coefficient would be the...
  9. lKobRal

    Rational method

    Thank you for your detailed and very thorough answer! Now I understand everything about the runoff coefficient. 1. I would also 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...
  10. lKobRal

    Rational method

    Thank you very much, I understood your explanation. But I had one last question: the runoff coefficient for commercial and residential areas is different, although the hydrological group is the same (for example hydrological group A in the fourth column)???
  11. lKobRal

    Rational method

    Unfortunately, I did not understand your determination of the runoff coefficient. Let's look at a specific example. For example, there are street, green spaces and high-density residential development in watershed area. The runoff coefficient for the street (asphalt pavement) is (0.7-0.95), what...
  12. 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...
  13. 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...
  14. lKobRal

    Influence of rainfall.

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

    Ground cover for sewer pipe

    Thanks, now I got it. Here in Russia, we take ground cover not for top of the pipe, but for invert level, and it confused me a little.
See more

Part and Inventory Search

Back
Top