AutoCAD Civil 3D General Discussion

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Registered: ‎03-12-2011
Message 1 of 5 (1,092 Views)
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Embankment/Daylight Query

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10-01-2013 01:44 AM



I'm building up my assembly and I want to add a daylight sub-assembly in order to grade my proposed surface to the existing surface. Typically I would have a 1:3 slope up or down. I have choosen the DaylightGeneral for this and although there is quite a few parameters to play with, I'm only interested in the up/down slope but when I put anything sleeper than 1:4 it doesnt work, I get this red line and circle. Can anyone tell me why?


Thanks in advance.



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Message 2 of 5 (1,081 Views)

Re: Embankment/Daylight Query

10-01-2013 04:23 AM in reply to: Happyunited123
Daylight general has 3 cut situations and 3 fill situations. the flat fill slope can't be steeper than the steep fill slope. If you do this i think it will give you the situation your talking about. so if you want 1:4 steep slope put in 1:5 med slope and 1:6 flat slope.

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Message 3 of 5 (1,061 Views)

Re: Embankment/Daylight Query

10-01-2013 08:57 AM in reply to: dgordon

Dan has it right.  DaylightGeneral also has height limits for the test of flat slopes vs. medium or steep slopes.  You need to make sure that the flat limit < medium limit < the steep limits.


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Registered: ‎10-31-2006
Message 4 of 5 (1,034 Views)

Re: Embankment/Daylight Query

10-02-2013 08:45 AM in reply to: Happyunited123

I find that the DaylightGeneral subassembly is not very general.  For simple models, with single cut and fill slopes, I use the DaylightMaxWidth.  It has fewer properties, which makes it easier to use.  Just make sure to specify a maximum width value that will not constrain the slope.

David Zavislan, P.E. | Wood Rodgers, Inc.
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Message 5 of 5 (997 Views)

Re: Embankment/Daylight Query

10-08-2013 07:33 AM in reply to: david.zavislan

Thank you all for the answer, worked a treat.


I do however agree that the daylightgeneral is a bit complicated for something 'general'.

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