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This question got me all confused. The final part says the inlet head is 10ft above the invert of the inlet end . I find it hard to understand/visualize the basin as described. Viessman & Hammer defined h as the elevation of the center-line of the outlet. Now, I would understand if the...

How much time should I waste trying to figure out the questions/solutions in this book? I`m trying to solve the hydrology depth problems and the questions made me feel like I haven`t read enough. I have spent the last week reading hydrology alone. PLEASE ADVISE. Thank you. :dancingnaughty:

Thanks Jacob. The NCEES solution calculated "n sub s" as 591 and selected a radial flow impeller. Thanks for adding to the confusion :sharkattack:

Also, Table 18.9 on page 18-12 gives different SPECIFIC SPEED versus impeller design. The specific speed is "n sub s", the speed of the motor is "n".

Thank you. Unfortunately you haven`t answered my question. I have read Chapter 18 of CERM and I didn`t pick anywhere where it was said that that to calculate the specific speed, the speed of the pump motor has to be assumed. Equation 18.28 of CERM was used in the NCEES solution and the value...

QUESTION Given a net total dynamic head of 1200ft and a flow of 10cfs, which type of single stage impeller would be the most efficient to use? The solution used 1800 as the impeller speed. I need help figuring out where the 1800rpm in the solution came from. It is not mentioned in the...

I am currently reading for the structural AM of the exam and I feel like I`m reading endlessly . Can anyone tell me the chapters I should limit myself to in order to be well prepared for the AM Structural? I don`t want to waste too much time. I`m taking WRE depth. Thank you. :multiplespotting: