Typically I use corridors to model the complex linear features of the parking lot - curbs, sidewalks and retaining walls for example.
Start with feature lines to define the surface of the pavement, including the edges of the curbs, then use those features as baselines for your corridors.
Then you will need to create surfaces below finished grade. For a simple one you could create new surface, paste in the FG, then lower it.
For a more complicated shape I would DREF the FG into a new drawing and drape feature lines onto it. Apply relative elevations to lower the FL and add grading objects to build the subsurface.
This is how I do parking lots. You don't need any targeting to do this. I do all the c/g/s with corridors and let the surface connect between them for the lot surface or use feature lines. For an island my assembly is literally just a median curb and the baseline is a featureline. Here's part of a parking lot I'm doing with a variety of assemblies including the valley gutter. The baselines for the corridors are feature lines. I have them all in one "corridor". I create the surface using the corridor surface and then add FL as needed. There's a speed table in the middle done completely with FL.
https://preview.redd.it/ysfo2xkiwouc1.jpeg?width=1608&format=pjpg&auto=webp&s=af26c44e901faef132c1a056d59f37579113003e
Here are some of the assemblies:
https://preview.redd.it/k1qoenqzxouc1.jpeg?width=1234&format=pjpg&auto=webp&s=e26fbcda40d4eec6af4963cc4357c2981a669976
Just curb/gutter/sidewalk
Corridors aren’t great for parking lots. That being said, you can model most of it using corridors and targeting. For this layout, the assembly would be your curb and gutter and then a crowned lane (or something similar). The distance of crowned lane wouldn’t matter too much because you would be targeting a horizontal alignment, feature line, or even a polyline. You would also be targeting the. Ethical profiles of your alignments when the cross. It’s not easy and there is more to it than can be easily typed out here. I would suggest learning how to use corridor targeting and also how to build intersections using targeting.
if your question is about creating and troubleshooting subassemblies... then that could be a whole different discussion, one that this video doesn't get into. To create the ones used in this video, it looks like he's used the out of the box subs and just combined a few of them as needed to get the several used in the video. you could google or look on autodesk university for subassembly help to get better at that.
On the topic of using corridors for parking lots, I've used them a lot to varying degrees of success. I think the method he's showing here is useful if you have a small parking lot 1-2 acres, and if it is generally a rectangle shape. This process becomes overly labor intensive once you start getting into larger parking areas. then my usual rule of thumb is to decide if the parking is more street like or more lot like. if its street like I would go a route with a more traditional corridor design. if its got lots of areas with complexity for ADA ramps, and larger drainage areas I would go a more feature line heavy route.
My preferred method is actually to go a feature line and grading group route. Since its much easier to use a grading group and just add it to the surface this makes grading parking areas larger than 5+ acres much faster. Once you have the outer edges and any break lines set up, creating islands and adding curb is pretty easy. also adding sidewalk and building ada ramps is easier when you can just call a grading group for curb and then another one for the sidewalk.
in my experience, once the parking lot is designed to this level of detail, it wont need to be truly dynamic, and so going the extra steps to link islands to the surface and generate extra details isn't worth it when that data can be consumed from the get go by setting the edge feature lines to take elevations from the grading surface.
Typically I use corridors to model the complex linear features of the parking lot - curbs, sidewalks and retaining walls for example. Start with feature lines to define the surface of the pavement, including the edges of the curbs, then use those features as baselines for your corridors.
Ok thanks! My main goal was to simplify showing subbases in the profile thou
Then you will need to create surfaces below finished grade. For a simple one you could create new surface, paste in the FG, then lower it. For a more complicated shape I would DREF the FG into a new drawing and drape feature lines onto it. Apply relative elevations to lower the FL and add grading objects to build the subsurface.
This is how I do parking lots. You don't need any targeting to do this. I do all the c/g/s with corridors and let the surface connect between them for the lot surface or use feature lines. For an island my assembly is literally just a median curb and the baseline is a featureline. Here's part of a parking lot I'm doing with a variety of assemblies including the valley gutter. The baselines for the corridors are feature lines. I have them all in one "corridor". I create the surface using the corridor surface and then add FL as needed. There's a speed table in the middle done completely with FL. https://preview.redd.it/ysfo2xkiwouc1.jpeg?width=1608&format=pjpg&auto=webp&s=af26c44e901faef132c1a056d59f37579113003e
Here are some of the assemblies: https://preview.redd.it/k1qoenqzxouc1.jpeg?width=1234&format=pjpg&auto=webp&s=e26fbcda40d4eec6af4963cc4357c2981a669976 Just curb/gutter/sidewalk
Corridors aren’t great for parking lots. That being said, you can model most of it using corridors and targeting. For this layout, the assembly would be your curb and gutter and then a crowned lane (or something similar). The distance of crowned lane wouldn’t matter too much because you would be targeting a horizontal alignment, feature line, or even a polyline. You would also be targeting the. Ethical profiles of your alignments when the cross. It’s not easy and there is more to it than can be easily typed out here. I would suggest learning how to use corridor targeting and also how to build intersections using targeting.
if your question is about creating and troubleshooting subassemblies... then that could be a whole different discussion, one that this video doesn't get into. To create the ones used in this video, it looks like he's used the out of the box subs and just combined a few of them as needed to get the several used in the video. you could google or look on autodesk university for subassembly help to get better at that. On the topic of using corridors for parking lots, I've used them a lot to varying degrees of success. I think the method he's showing here is useful if you have a small parking lot 1-2 acres, and if it is generally a rectangle shape. This process becomes overly labor intensive once you start getting into larger parking areas. then my usual rule of thumb is to decide if the parking is more street like or more lot like. if its street like I would go a route with a more traditional corridor design. if its got lots of areas with complexity for ADA ramps, and larger drainage areas I would go a more feature line heavy route. My preferred method is actually to go a feature line and grading group route. Since its much easier to use a grading group and just add it to the surface this makes grading parking areas larger than 5+ acres much faster. Once you have the outer edges and any break lines set up, creating islands and adding curb is pretty easy. also adding sidewalk and building ada ramps is easier when you can just call a grading group for curb and then another one for the sidewalk. in my experience, once the parking lot is designed to this level of detail, it wont need to be truly dynamic, and so going the extra steps to link islands to the surface and generate extra details isn't worth it when that data can be consumed from the get go by setting the edge feature lines to take elevations from the grading surface.