CE 433- Class 5 (24 Jan 2020) Rational Method Pipe Sizing with Spreadsheets, Time of Concentration

[@Denmark_77]

Thank you for this video! It explains the concept and the processes I need to do a similar set of calculations!

[@IsaacWait]

Glad it is helpful. Good luck!

[@fn15895]

Thanks Isaac. It helps me clarify my confusion about time of concentration and td. Also it helps me solve problems about discharge calculation with mult-catchment. Thank you very much.

[@IsaacWait]

Happy to hear that -- best wishes from West Virginia!

[@fn15895]

Issac, in your lecture about aquifer, you mentioned 1 wellpoint dewatering. How about when there are 2 wellpoints for deeper dewatering calculation? How may we know how to solve those kind of calculation like finding drawdown, pump rate, etc. Thank you very much for your in-depth teaching. Best wishes from Hong Kong.

[@IsaacWait]

@@fn15895 The principle of superposition applies in cases of multiple wells. None of my videos or examples include multiple well problems, but there is an example in the book "Water-Resources Engineering" (3rd edition) by David A. Chin. ISBN: 978-0-13-283321-9. See pages 741 to 744.

[@fn15895]

Thank you very much for your book reference , Isaac. 👍🏻👍🏻👍🏻

[@fn15895]

@@IsaacWait I just discover my university library has this book. I will read it tomorrow to see whether it can help me understand. Really thank you very much for your selfless help. Thank you.😊

[@anilsungum255]

Thanks Isaac WAIT. It helps me to clarify discharge calculation, I am very appreciate with the excel sheet template, could you send for learning purpose ,I remain your kindly student

[@EdwardeAkmad]

Thank you! i have one question. Why is the slope not considered in getting the velocity?

[@braydenallen6119]

It is considered in the re arranged Manning Equation.

[@elmerz6196]

hello sir. could you further explain where did the mD=2.16 came from?

[@IsaacWait]

Manning's equation for BG units, rearranged in terms of unknown pipe diameter, D.