I was entering a subdivision with the COGO Traverse, and couldn't Finish the traverse. Error message said bad values, tangent. There were two curves, and when I changed them to a straight line it worked. Then I noticed that the arc length and chord length was the same on one, and within 0.02 feet on the other. I'm hard pressed to see how an arc length and a chord length could be the same; close is possible, but maybe Arc can't handle that? or their other measurements don't match.
On the other hand, maybe I'm doing something wrong. I used Chord, Radius and Chord Direction, and also tried using Angle after I calculated that with the Curve Calculator tool. There are many more similar curves in this plat. Curve data below. The strange thing is that Arc drew them, I just couldn't Finish to save it (I could save the Traverse .txt file). Am I missing something, is it Arc, or are their measurements incorrect? I know it's a Friday afternoon, so extra thanks for any help.
On the other hand, maybe I'm doing something wrong. I used Chord, Radius and Chord Direction, and also tried using Angle after I calculated that with the Curve Calculator tool. There are many more similar curves in this plat. Curve data below. The strange thing is that Arc drew them, I just couldn't Finish to save it (I could save the Traverse .txt file). Am I missing something, is it Arc, or are their measurements incorrect? I know it's a Friday afternoon, so extra thanks for any help.
| Curve | Length | Radius | Chord |
| C1 | 8.21 | 710.00 | S 03-21-13 W, 8.21 |
| C2 | 45.87 | 530.00 | S 01-12-21 W, 45.85 |