Daylight Target with a width variable

[TOONFANCC]

I currently have a road corridor with a daylight which targets the existing ground surface. However in certain locations there is not enough of the existing ground surface for the dayylight to be created. Is there a way that I can have the daylight to target a feature line where it is not possible to maintain the standard slope?

[Anonymous]

I typically extend the boundary of my surface in these cases.  Extract the boundary of the surface then do a stepped offset. Depending on the conditions I usually keep it at the same elevation or add a slight slope, just to give some data to tie into.

[TOONFANCC]

The only thing is that there is a lack of existing ground in certain areas as this is the extent of the highway boundary. Therefore, I'm ideally looking for a way for the daylight to end at the highway boundary extent so there is no third-party land requirement, if such a method exists?

[Anonymous]

I'm definitely not an expert, but is it possible to write a logical statement? like if 4:1 is less than the R/W width then use that, or else use the R/W width.

since I am not that good I would probably draw a feature line along either the daylight line or the R/W line as appropriate and target that. depends on how long the job is?

[BrianHailey]

Extract the border of the surface. Use the subassembly, "Daylight Max Width". Use the border polyline as the target for the width.

[cwr-pae]

Use a ConditionalHorizontalTarget looking for a featureline, for if not found put in your normal daylight assembly.

Use a ConditionalHorizontalTarget looking for a featureline by layer (named something like target-RW), for if found a use WidthandSlope targeting the FL for both width and elevation (slope). Find the areas where the daylight assembly leaves gaps, draw a feature line on the above mentioned layer from the last station of normal daylight to the next station of normal daylight following the right of way. Grade the feature line to a constant slope from beginning to end with SETFEARTUREGRADE or manually set any intermediate points elevations. After rebuilding the corridor you should have the side slopes graded to the featurelines at the average slope between the beginning and end of the gaps.

[TOONFANCC]

Brian, thanks for your reply. I have tried your method but it doesn't seem to have worked. I have a 1:2.5 daylight with the red line shown being the highway boundary. I have made this a feature line and set it up as target as shown below, but the daylight doesn't seem to hit it and the gaps remain. Any help would be greatly appreciated.

[Dexterel]

I can make a custom subassembly if you need it.
Decisions:
If target surface is not valid us feature line offset and subassembly slope or featureline elevation (if declared).

[Dexterel]

Please test if this is what you need.

As a behavior, offset and elevation target take effect if normal slope to surface can not be done.

[BrianHailey]

Can you share your drawing? I'll take a look at it when I have time.

If you don't want it shared publicly, I have a gmail account that starts with c3dplus.

[copper.chadwick]

@TOONFANCC,

This is a great how-to/ general Subassembly content post. I see there were a great deal of potential solutions, please hit the Accept as Solution button if a post fully solves the issue or answers the question.​ Thank you for your participation, your accepting a solution adds value to the post for the community as a whole, and helps other members find answers to their issues.

[Dexterel]

this post was a waste of my time

[wardhanraj]

I guess day light inside row will be a good option.

Keep Overide max slope option On

[MattCichon]

Great Subssembly Dexterel BTW. Is there a chance to modify this sub that it meets this condition:

1. It follows the surface as long as it can and stops at it's border with a defined slope - i ask because for example my lidar surface measurment is only 40 meters wide from my alignment. F.e. when i have a daylight with slope 2,5 % it doesn't meet the surface in some places (in some places it does depending naturally on the heights). The lidar measurment is not wide enough.

2. The second condition exists - the daylight meets the surface when they cross.

I hope you'll get what I mean. And would be appreciate for help.

Greetings,

Matt

[MattCichon]

Hi,

can anyone modify the daylight1 made by Dexterel that it can have a thickness and a bottom link?

Has anyone seen Dexterel? I wrote him a PM, but didn't get an answer...

Greetings

[Dexterel]

A colleague modified and added thickness.

Please don't give me PM. I decided to interrupt my form activities because people do not respect the time I give in order to solve their problems.

https://we.tl/t-wVTi8trIfy

[MattCichon]

Dexterel,

many thanks to You and your colleague. That' exactly what I was looking for. You guys rock!

It's a pity that You interrupted Your activity here. With people like You and other here on this forum I would not solve my problems...

One more question. Where did You learn programming in SAC? Do I need any basic programming skills to do something like the daylight1? How long have You been using C3d?

Greetings,

Matt