creating curves using data (radius, delta ect)
creating curves using data (radius, delta ect)
(OP)
I create curves in plat drawings by drawing the chord bearing and distance of the curve. Then I draw two circles at each end point with the correct radius, then another at the intersenction of those two circles. and trim out the curve.
Seems other people are using another way to draw curves using maybe delta angle? how is another way to draw curves properly using either radius,length,bearing,chord distance, tangent, or delta angle? anyone know? If you have a way to create them using the delta angle please let me know!
thanks for any help!
jim
Seems other people are using another way to draw curves using maybe delta angle? how is another way to draw curves properly using either radius,length,bearing,chord distance, tangent, or delta angle? anyone know? If you have a way to create them using the delta angle please let me know!
thanks for any help!
jim





RE: creating curves using data (radius, delta ect)
____________________
Civil 3D 2008, Terramodel
RE: creating curves using data (radius, delta ect)
haha
you can't do arc: start-center-angle, for plats. you dont know what the middle point of the curves are on plats, it isn't listed in the curve data table...
RE: creating curves using data (radius, delta ect)
____________________
Civil 3D 2008, Terramodel
RE: creating curves using data (radius, delta ect)
RE: creating curves using data (radius, delta ect)
I'm not English spoken.
RE: creating curves using data (radius, delta ect)
RE: creating curves using data (radius, delta ect)
RE: creating curves using data (radius, delta ect)
"A plat consists of a map, drawn to scale, showing the divisions of a piece of land........" For more information, ckeck out the link.
http://en.wikipedia.org/wiki/Plat
RE: creating curves using data (radius, delta ect)
RE: creating curves using data (radius, delta ect)
I understand what you are saying. I used to use the same method years ago using COGO 300 when taking raw survey data and inputting into cadd. I thought of a couple of things you could try depending on the accuracy.
1. Do you have the radius point of the arc you are drawing? I am assuming not, and that is why you are using the chord and two circles to establish the radius point.
2 You could use the Circle Tangent Tangent Radius command and select both lines that the arc will be tangent to, and then give the radius. Then just trim your circle.