ldevito Posted April 15, 2010 Share Posted April 15, 2010 I am re-involving myself in autoCAD after a 10 year hiatus. I am trying to draw a road/parking area. The road curves. I need the road to be 217' long. How can I do this? What tools do i use? Everything I have tried isn't working. Lyndsie Quote Link to comment Share on other sites More sharing options...
ReMark Posted April 15, 2010 Share Posted April 15, 2010 What other curve information do you have to work with other than the length? Do you know the radius of the curve? Quote Link to comment Share on other sites More sharing options...
ReMark Posted April 15, 2010 Share Posted April 15, 2010 I pulled out my old surveying book and looked up laying out horizontal curves. Of course most of the examples given have information regarding radius, tangent distance, curve length (which you know) and long chord length as well as the delta (angle of curve). The more info you have the better although you can always calculate for a missing parameter if you have the other ones. This road your laying out doesn't require a compound or reverse curve does it? Quote Link to comment Share on other sites More sharing options...
ldevito Posted April 15, 2010 Author Share Posted April 15, 2010 They are just sketches so I am to make then "look" good. No survey was done, just field measurmements with a 100' tape. Distances are approximate. This will be for putting gravel down over existing parking lots that need resurfacing. I have included the sketches to see what I am trying to draw up. Limestone parking Lot Sketches 2010.pdf Quote Link to comment Share on other sites More sharing options...
ReMark Posted April 15, 2010 Share Posted April 15, 2010 I looked at your sketch and there isn't a whole lot of information on the curve. It seems like you can pretty much design what you want since there also doesn't seem to be much in the way of contraints shown either. Is this a large, empty tract of land? Existing parking lots? Why not just go on Google Earth, find the location, copy the satellite image and trace over it? It's not like it has to be to scale right? Quote Link to comment Share on other sites More sharing options...
alanjt Posted April 15, 2010 Share Posted April 15, 2010 Too bad you didn't get the chord distance for the curve. However, based on your sketch, ReMark has the best idea. Quote Link to comment Share on other sites More sharing options...
Tankman Posted April 15, 2010 Share Posted April 15, 2010 I looked at your sketch and there isn't a whole lot of information on the curve. It seems like you can pretty much design what you want since there also doesn't seem to be much in the way of contraints shown either. Is this a large, empty tract of land? Existing parking lots? Why not just go on Google Earth, find the location, copy the satellite image and trace over it? It's not like it has to be to scale right? Wouldn't, if entered a known dimension, it be possible to scale the image and then trace? Quote Link to comment Share on other sites More sharing options...
alanjt Posted April 15, 2010 Share Posted April 15, 2010 Wouldn't, if entered a known dimension, it be possible to scale the image and then trace? Sure, I scale images all the time. Quote Link to comment Share on other sites More sharing options...
Dana W Posted April 15, 2010 Share Posted April 15, 2010 Wouldn't, if entered a known dimension, it be possible to scale the image and then trace? Well, I just did it, to see if I could. But I lost the raster from the OLE when I copied my results to another drawing. The copied image is now white in model space, even plotted to a pdf. Phoooie, had to edit in my attach. Sorry bout the sloppy layout, just wonder what happened to the picture of the parking lot. Limestone-Page 1 of 1.pdf Quote Link to comment Share on other sites More sharing options...
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