Bryan G. Posted October 14, 2010 Share Posted October 14, 2010 We have the landscape area tool, the hardscape tool the roofing commands how about adding a runoff coefficient box to these different items then we can calculate runoff in a worksheet. Just saying! Quote Link to comment
Rossford Posted October 15, 2010 Share Posted October 15, 2010 Bryan, I second that motion! I have been trying to figure out some way to combine a simple C value and acreage of drain basins into the worksheets, but haven't really put in much time yet. Quote Link to comment
Bryan G. Posted October 15, 2010 Author Share Posted October 15, 2010 I would love a full hydrology unit, but lets just add to what we have. Add C values to each surface we have create a border for the drainage area (Much like the fence tool. and then bang we can generate Q. I don't know programing but I would think it may be easier to add to existing than rewrite from scratch. Quote Link to comment
islandmon Posted October 15, 2010 Share Posted October 15, 2010 Check-out: http://en.wikipedia.org/wiki/Drainage_equation and for fun try a few of the mathematica demonstrations: http://demonstrations.wolfram.com/TorricellisLawForTankDraining/ Quote Link to comment
Bryan G. Posted October 15, 2010 Author Share Posted October 15, 2010 Nice, but I'll stick to the Rational or SCS Methods. That may take some getin my head around. But I'll see. Quote Link to comment
Rossford Posted October 15, 2010 Share Posted October 15, 2010 Bryan, I agree a full hydro unit may not be necessary. I generally try to simplify my "C" anyway in the rational formula and wonder if worksheets could use class or record formats to do the same thing? For instance, just have a separate column in a workesheet, and give an area tagged as lawn a C of .35, and set up the Q in some other column. There must be an if-then function to use somehow, right? Just noodling, pre coffee. Also, there is a land planning add on module that may cover this. I am not sure about that yet, but it seems as if it had a sewer design module along with roads and the like. Quote Link to comment
Bryan G. Posted October 15, 2010 Author Share Posted October 15, 2010 I recently got the Land Planning Mod. Still going through it. It seems to do a fair amount but seems like there may be some weak points (I'm not talking bad about Charles, I just need to figure out some of the tools). As for a worksheet, I think that yes it could be easy to compile info in a worksheet to generate Q, It however would be nice to automate this through vectorworks. I issued a post "DTM Woes" under Landmark that shows a simple flow pattern area of drainage (4) and surfaces, I used the area within these bounds to calculate Q. I would think something to add to the existing tools that will generate a value for C or I should say we could select for now. then a worksheet could do the rest. After all we have a cut and fill function, drainage shouldn't be that far off. Quote Link to comment
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