AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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Valued Contributor
Vasily_BC
Posts: 100
Registered: ‎04-27-2012
Message 1 of 7 (196 Views)
Accepted Solution

Falling Grading

196 Views, 6 Replies
02-13-2014 09:51 AM

Hi,

 

Another day- another question...

What you guys do when you have falling grading?

I have simple feature line with no fancy in elevations.

Why fill is making such strange daylights?

 

Thank you for any suggestion.

 

 

1.JPG

Valued Contributor
Citadel2012
Posts: 68
Registered: ‎01-30-2014
Message 2 of 7 (190 Views)

Re: Falling Grading

02-13-2014 10:24 AM in reply to: Vasily_BC

It looks like that inside curve is giving you some problems. Try telling the grading NOT to apply the whole length, and split it into 2 areas. Also, maybe add more P.I.'s or elevation points to the feature line to create more sampling in the grading. 

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Valued Contributor
Vasily_BC
Posts: 100
Registered: ‎04-27-2012
Message 3 of 7 (184 Views)

Re: Falling Grading

02-13-2014 10:26 AM in reply to: Citadel2012
I did that curve to avoide it actually)
I'll do what you've suggested.

Thanks!
Valued Contributor
Citadel2012
Posts: 68
Registered: ‎01-30-2014
Message 4 of 7 (176 Views)

Re: Falling Grading

02-13-2014 10:45 AM in reply to: Vasily_BC

I think if you have two gradings on either side of the inside curb, with a decent amount of space between them (as to not create overlapping), you should be able to create a feature line connecting the ends of the two grading daylights and drop a grading infill in the middle. As long as the feature line that connects the daylights is in the same site.Capture.JPG

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To Err is Human; To Really Foul Things Up Requires a Computer.
Valued Contributor
Vasily_BC
Posts: 100
Registered: ‎04-27-2012
Message 5 of 7 (146 Views)

Re: Falling Grading

02-13-2014 01:01 PM in reply to: Citadel2012

It worked but somehow gradining has a strange ending now.

Like it has limits on distance or so.

1.JPG

Valued Contributor
Citadel2012
Posts: 68
Registered: ‎01-30-2014
Message 6 of 7 (138 Views)

Re: Falling Grading

02-13-2014 01:16 PM in reply to: Vasily_BC

That last image looks like you're using a grade to surface based on grade or slope, and the grading daylight line overextends where you think it would be catching the surface. If you pull the grading back further, and use a feature line in the grading's site to connect the daylight features, you shouldn't run into those problems. I posted an image before with a sample of how you could do it. With that being said, if you choose to model the separation with a feature line and infill, you may want to check the grade down from your feature line to this "arbitrary" daylight, because it will not be a uniform slope/grade like the grading projection objects. 

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To Err is Human; To Really Foul Things Up Requires a Computer.
Valued Contributor
Vasily_BC
Posts: 100
Registered: ‎04-27-2012
Message 7 of 7 (134 Views)

Re: Falling Grading

02-13-2014 01:22 PM in reply to: Citadel2012
Yes, I just run grade to surface with 2:1. Thanks for reply, I'll try what you've suggested.
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