Thanks again guys,
I will check on the eFunda calc this weekend and post back on the results, since the pdf Katmar sent was a chart I did a quick test and on the 1/4 full numbers, with smaller pipes, my spreadsheet tested to have about a 3-5% error margin, always calculating a bit higher than...
Feric, thanks for the tip, I would really like to test against more calculators, when I went onto eFunda I could not find a flow calculator except for the pressure drop calc. Could you send me a direct link?
Thank you,
Daniel
There's the link to my new post with the Excel file, I have some work to do on the quattro pro file for now.
http://www.eng-tips.com/threadminder.cfm?pid=770
I am working on an audit of a sewer system and I got some help and configured a spreadsheet to calculate any of the following to an aproximation (around 3% error or less)
d/D
Q
Manning's n
slope
Diameter
those are the input variables, just place a "?" in the cell of the unknown and it will...
cr1973,
Thanks for the advice, I have previously taken your points into consideration and asked the operators of the sewer department to give me info. from the field. The operators checked a system of pipes for flow and I calculated the same system of pipes and I came up with a close to exact...
Howdy all,
Thanks again for all the help, I found a quattro pro sheet that was written partially for what I was looking for, I used that to rewrite it into excel and it works great. I will be posting the .qpw and .xls files on here sometime, but for the next week or so I will be busting away on...
GregLamberson,
Thanks for your input, I really do appreciate every and anything that is posted. You are correct in the fact that I can simply make a chart and cross examine and just tell the gov't, this pipe is bad, this pipe is good. That is truly all that is required of me to do for my report...
Howdy
I am working on an audit for a sewer system and I was wondering if mathCAD could solve manning's formula in a way to give me an equation for an approximation for depth of flow? I have GPD, pipe diameter, pipe length, slope, roughness, but alas I need the depth of flow and I am untaught to...
I worked on figuring out a solution today and I am still stumped, honestly, now I am more trying to decide what route to take. I can formulate a chart like RWF7437 mentioned and I like that idea because I can get it done, but I am discouraged at the use of that system because it is more reader...
RWF7437,
Thanks for your response, That's help me better understand the equation. And unfortunatly, no one has done this at the distric where I am working. I spent the first two weeks counting houses, calling businessess, calculating lot sizes and average sewer usage amount of my town. Most of...
Howdy,
I am an intern working with a water district this summer. I am working on an audit of the sewer system in our town and I am stumped. My first calculation is to find if any of our lines are running above maximum capacity (1/2 full for 12" diameter and less; 3/4 full for 15" diameter and...
