I have a station equation in my alignment that happens to fall in a vertical curve in my profile. I'm using the PVC and PVT station and elevations from the plans and the K value to draw a Fixed Vertical Curve. It doesn't seem to be taking into consideration the station equation. It is calculating the wrong PVI station and elevation. Any ideas on what the problem may be? Do I need to draw it differently?
Thanks,
Desirea Bussie
FBL & Associates
Hello Desirea,
What version of Civil 3D are you using? I tested in 2014 and the function works correclty.
Best regards,
Tim
Right below where you type your post is a Choose File button. You can attach a drawing file there. If it's too big, use a service like YouSendIt or DropBox to send it directly: tcorey at shasta dot com.
Tim
I'm attaching my file.
Here is the data from the plans. This is what my vertical curve is supposed to reflect.
Station Equation
Bk 581+96.137
Ahd 580+88.989
VPC 579+97.148 315.156
VPI 583.40 328.65
VPT 587+90 320.55
Vertical Curve Info
900' VC
K 188
Grade In 2.99862%
Grade Out -1.800%
As you will see the VPC and VPT stations are correct but the data on the curve is not. Any help I can get is appreciated.
It appears to be working correctly.
Your PVI is inside the first station equation.
The station equation makes a gap of 107.25, plus the curve length of 685.704 is 792.95. Subtract the BVC of 57997.15 from the EVC of 58790.10 and you get 792.95.
Tim
I guess I'm still confused. Here is the problem that I just don't understand. The VC is supposd to be a 900' vertical curve. This would mean 792.8520 plus the 107.148 from the station equation. The curve in my file is calculating 685.704 VC plus the 107.148 from the station equation for a total of 792.8520. If this is the case, I would be adding that 107.148 in twice to get the 900' vertical curve that the plans call for.
Desirea