Topic: Drainage Question 1

[MSTG007]

Is there away, with parcels, to take an area with the labels; create different C Coef. and then average them?
EX.
I would have a Site / Grass/ Under there i would place all the grass parcels with associated labels
Site / Pavement / Same as above
Site / Roof / Same as above

I can then hopefully, with all the parcels, I can average the C Coef. to get it averaged or a weighed number.

I figured if this works, we can use this for our existing conditions, and possibly storm sewer calcs.

Thanks for your help!

[mjfarrell]

Yes, you will want to add the C factor as a USER DEFINED PROPERTY, and be sure to add that property to the parcel.  Then you can put that in a table, copy>paste into Excel apply math formulea to sum and average to get your weighted C.

[MSTG007]

I am hoping I can get all this inside the drawing with autocad not use excel. 

[mjfarrell]

see other answer in CAD GENERAL, and why didn't you put that in you question?

[scout]

I am hoping I can get all this inside the drawing with autocad not use excel. 

civil 3d tools won't do it, since parcel tables can't sum/add across.  There is a process (somewhat labor intensive) that you can do with autocad tables, annotation objects and map topology if you are interested.

I've attached the paper here.  It isn't the easiest to follow paper, but the class is being presented this year as well, so I will post the refined paper (that will have more step by step) when it is finished.  Last year's class was also recorded and can be accessed at au.autodesk.com but sometimes it is hard to find and they are doing dumb stuff with logins lately.

[MSTG007]

I will plug and chug away... I know,,,, theres got to be a way to do this!!!!