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Hi All, Do nominal pipe sizes come in odd numbers or are they always even numbers ( 4 inch, 6 inch, 8 inch, etc). I was solving a fluid mechanics problem where two pipes were in parallel and you had to solve for the diameter of one of the pipes. I got the right answer of 4.8 inches. Based on...

Hi All, I am given the first two columns and asked to find the maximum hourly precipitation in inches/hr. The last two columns are part of the solution. I'm not really understanding their solution so would anyone please explain why the cumulative values need to be taken? Also, it seems they...

I'm trying to obtain the intensity value from the IDF curve for a 25 year storm. The time of concentration is 17 min. Since 25 year storm is not there, how would I interpolate? Do I just take the average of the 20 year and 50 year value? Please let me know what approximate value you get =] Thank...

I'm trying to calculate the hydraulic radius but I think the solution in my textbook may be wrong. But I wanted to see if anyone here might be able to point out my mistake, if any.  A trapezoidal channel has a bottom width of 3 ft and side slopes of 2 ft vertical and 1 ft horizontal. Assume a...