Help with Daylighting in Civil 3D...

[Youngst]

Everyone,
I would like to know how to do these steps in Civil 3D.
Here they are in Land Desktop.
Create 3D Poly Line by elevation, Slope, curb, or step
Grading Menu - Daylighting - Create Single.

I would like Civil 3D to draw a 3D polyline where the daylight line is some slope. In LDD, you could daylight that 3D polyline to either side with a slope or grade. It would then create a Polyline where it intersected the surface.

I can't find this daylighting command in Civil 3D. I've tried to build an assembly with the daylight subassembly, but it doesn't draw a polyline where it daylights.

Is there a simple way to just offset a feature line and it will create another feature line where it daylights to the surface?

I guess I'll have to use the companion for now, as time is against me with tight deadlines.

Thanks in advance.

Youngster

[sinc]

If you create a corridor with a daylight subassembly, you should be able to get a feature line where it daylights.

In order to get it, though, your subassembly must have a point code at the location where you want the feature line, and you must turn on the feature line (check the "Connect" box on the Feature Lines tab of your corridor's properties).

Most of the stock subassemblies contain two codes at the daylight point. One code is Daylight. The other is either Daylight_Cut or Daylight_Fill, depending on whether you are in a cut situation or a fill situation.

You should also be able to generate a featureline along the daylight line by using a Grading object that targets your surface.

In both cases, you get a Feature Line along the daylight line. If you explode this Feature Line, you have a 3D Polyline.

[Youngst]

Sinc,
Thanks for the help. I'll give it a try. It sounds like it will work.
Appreciate the tidbits of information.

Thanks again...

Youngster

[Youngst]

OK Sinc,
I was able to get the Corridor to draw the Feature Daylight Line, by checking the Connect box. However, the only way that I could turn it into a Feature Line was to actually draw over the top of it, essentially tracing it, and selecting the surface for the elevations. Is there a better way? I can't imaging if this Daylight line had a lot of verticies in it.

I tried also to create a feature line from object under the grading menu, but it wouldn't recognize the daylight line in the Corridor. Do I explode the Corridor?

Thanks.

Youngster

[brainman1000]

OK Sinc,
I was able to get the Corridor to draw the Feature Daylight Line, by checking the Connect box. However, the only way that I could turn it into a Feature Line was to actually draw over the top of it, essentially tracing it, and selecting the surface for the elevations. Is there a better way? I can't imaging if this Daylight line had a lot of verticies in it.

I tried also to create a feature line from object under the grading menu, but it wouldn't recognize the daylight line in the Corridor. Do I explode the Corridor?

Thanks.

Youngster

Go to Corridors > Utilities > Create grading feature line from corridor.

If you do a grading object instead of a corridor, select the 'Grade to Surface' grading criteria and set the surface to the desired target surface. That will create a grading object from the selected feature line to the surface. You can then explode the grading object to get the 3d polyline representing the daylight line.

[Youngst]

Thanks Brainman,
I'll give that a try also.
One quick question about Daylighting...

Can you Specify the angle or direction of the daylight? Meaning, typically you daylight at a 90 degree angle from your daylight line. What if you would like to daylight at a 30 degree angle instead of the 90 degrees. It would be like the copy command versus an offset command. I hope I'm clear on what I'm asking.

Thanks.

Youngster

[brainman1000]

Thanks Brainman,
I'll give that a try also.
One quick question about Daylighting...

Can you Specify the angle or direction of the daylight? Meaning, typically you daylight at a 90 degree angle from your daylight line. What if you would like to daylight at a 30 degree angle instead of the 90 degrees. It would be like the copy command versus an offset command. I hope I'm clear on what I'm asking.

Thanks.

Youngster

Regardless of what direction you try to grade the daylight you are always going to have a slope that is perpendicular between the feature line and the surface. Even if you specified a certain slope at a 30 degree angle, you will still have another slope at a 90 degree angle. It is simpler to just specify the slope perpendicular. Besides, daylighting is just a slope between a fixed line and a surface anyway.

[Youngst]

Gotcha...

Thanks for everyone's help.

I really appreciate it.

Best regards,

Youngster