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Create corridor surfaces and add corridor surface boundaries.
Type:
Tutorial
Length:
10 min.
Transcript
00:04
When we view a corridor in civil 3d,
00:06
we are seeing the result of joining up the
00:08
link codes and the point codes from the assemblies.
00:11
We've used.
00:14
These two white lines represent the link codes from the pave links on the assembly.
00:23
If we add these lines to a surface as brake lines,
00:27
you can see that civil 3d will triangulate between the lines forming a surface
00:37
looking again at the assembly. All of the points are also coded
00:42
when the point codes from adjacent assemblies are joined together,
00:46
they form lines.
00:47
These are the corridor feature lines,
00:50
there'll be a feature line for each point coat.
00:54
These are represented by the blue lines in the top viewport.
01:01
If we add these to a surface as brake lines, then again,
01:04
we'll get a triangulated surface.
01:10
So we have two ways that we can create surfaces from a corridor
01:14
by using links
01:15
or by using feature lines.
01:21
The links on the top of the sub assemblies generally have two coats.
01:25
For example,
01:26
the curb is coded as curb,
01:28
but the top links are also coded as top
01:32
and it's the same for the road lane.
01:34
It is coated pave
01:36
but also top.
01:38
So we could add links to our surface from individual sub assemblies using the codes,
01:42
curb pave etc.
01:45
But we could add all the links on the top of
01:47
the corridor in one go by using the top link coats.
01:52
Similarly, the bottom of the sub assemblies all share a common code of datum.
01:58
So to create a corridor formation surface,
02:00
we can use all of the datum links
02:06
on our site.
02:06
We have our road corridor but we need to allow access to our house garages.
02:11
We need some driveways.
02:13
These white poly lines in the drawing represent the positions of the driveways.
02:18
We need to add these in our corridor before we create our surfaces.
02:23
The sub assembly we imported for the curb,
02:25
virgin footpath can adapt to add a driveway with a dropped
02:29
curb when it detects a driveway target has been added,
02:34
all of our driveway poly lines are on layer C
02:37
road
02:38
drive targets.
02:40
We're going to add these to the corridor,
02:44
pick the corridor and from the modified region panel of the corridor ribbon tab,
02:49
click on edit targets,
02:52
slip the region and in the target mapping dialogue,
02:55
we're going to add the driveways to the driveway target on the right side of the road.
03:00
Click in the object name column for the width or offset driveway target,
03:05
the target dialogue set the object type to feature lines,
03:08
survey figures and poly lines.
03:11
We can add all of our targets in one go by using select by layer
03:18
in select entities by layer, scroll down to the C dash
03:21
road
03:22
drive targets layer and select it.
03:25
Note there are seven objects on this layer
03:29
click. OK.
03:30
And then OK. Again,
03:32
to dismiss the target mapping dialogue,
03:35
the corridor will rebuild and the driveways are added to the corridor.
03:40
If I view the corridor in the object viewer,
03:42
you can see the result of adding the driveways.
03:46
Notice how the drop curve has been added for the driveway.
03:51
Now we can create a surface for our corridor,
03:55
slit the corridor
03:56
and on the modified corridor panel,
03:59
slit corridor surfaces
04:02
in the corridor surfaces,
04:03
dialog use the crate surface button on the left to create a new surface,
04:08
rename the surface to sycamore heights, top surface
04:13
in the a data region. At
04:16
the top of the dialogue set, the data type to links
04:19
and from specify code, select the top link codes,
04:24
click the add button to add them to the surface
04:29
for the surface. Select adder brake line
04:32
and set the overhang correction to top links.
04:36
Set the surface style to contours 1 ft and 5 ft design,
04:42
create another new surface and rename it to sycamore heights, datum surface
04:48
set the surface style to triangles,
04:52
add the data link codes to this surface,
04:57
select adder's brake line
04:59
and set the overhand correction to bottom links.
05:03
If there should be two overlapping links, both coded datum,
05:06
then the surface will use the lowest link of the two
05:10
click, apply and rebuild the corridor.
05:13
We may not see the result of the surfaces until we refresh the display
05:18
click. OK. And then run the Regen command.
05:21
You can clearly see the datum surfaces as triangles. In the model
05:26
note, the surfaces have been added to the services collection. In prospector
05:32
use prospector to select the Sycamore Heights corridor
05:37
over on the right hand side of the corridor,
05:39
you can see there are triangles that have been created outside of the junction area.
05:44
To remove these. We need to add boundaries to our surfaces.
05:49
Select corridor surfaces from the modified corridor panel
05:54
in the corridor surfaces. Dialogue select the boundaries tab
05:60
right click on the top surface to add a boundary
06:04
corridor extents as out of boundary
06:06
will attempt to detect the boundary automatically
06:11
add interactively can be used if the first option fails,
06:15
this will require you to manually select bounding feature lines from the corridor.
06:20
Add from polygon can be used. If all other options fail,
06:24
you need to create a polyline and add it as the boundary
06:28
select corridor extents as out a boundary
06:32
repeat this for the datum surface.
06:35
Click. Ok. And rebuild the corridor
06:38
zoom into the corridor and pick one of the contours on the corridor top surface,
06:44
review the surface in the object viewer.
06:47
You should be able to see the driveway drop curves in the surface.
06:54
Pick one of the triangles representing the datum surface and review this surface.
07:00
This represents the formation surface of the road.
07:04
You can clearly see the different depths of
07:06
construction used on the road curbs and driveways,
07:13
use the surface properties of the datum surface and set its style to no display.
07:19
Now, we'll add surfaces to the mcallister boulevard corridor,
07:24
select the corridor and click on corridor surfaces from the corridor ribbon tap
07:29
at the top surface as before
07:32
adding the top links
07:34
and selecting adder's brake line
07:36
and setting the overhang correction to
07:38
top links.
07:42
Set the style to contours 1 ft and 5 ft design.
07:47
Go to the boundaries tab and add an outer boundary.
07:51
Then click. Ok. And rebuild the corridor
07:55
use Regen to refresh the display,
07:59
select the new top surface and review it in the object viewer.
08:05
The surface looks fine until you zoom into the lay by area.
08:09
Here you can see the curves have not been modeled correctly.
08:13
This problem occurs when sub assemblies from different base lines in the corridor
08:17
overlap slightly at their edges.
08:22
Go back to the corridor surfaces for this corridor,
08:27
select the service and from add data set, the data type to feature lines
08:32
and add the codes back, curb
08:36
flow line gutter
08:38
and top cup.
08:42
These are all point codes on the curb,
08:45
click ok and rebuild the corridor
08:49
and review the surface again.
08:52
Adding the feature line codes has improved
08:54
the surface and the errors have been fixed
08:57
once all of the corridor surfaces have been built,
08:60
I could share them with other models in the project.
09:02
By creating data shortcuts,
09:06
I will select the surfaces
09:09
and corridors
09:11
and add them to the data shortcuts project.
09:15
We've seen how we can create surfaces from our corridor models
09:19
and share them together with the corridors as data shortcuts.
09:23
We can now use these surfaces for cut and fill analysis
09:27
and to create a finished ground model.
Video transcript
00:04
When we view a corridor in civil 3d,
00:06
we are seeing the result of joining up the
00:08
link codes and the point codes from the assemblies.
00:11
We've used.
00:14
These two white lines represent the link codes from the pave links on the assembly.
00:23
If we add these lines to a surface as brake lines,
00:27
you can see that civil 3d will triangulate between the lines forming a surface
00:37
looking again at the assembly. All of the points are also coded
00:42
when the point codes from adjacent assemblies are joined together,
00:46
they form lines.
00:47
These are the corridor feature lines,
00:50
there'll be a feature line for each point coat.
00:54
These are represented by the blue lines in the top viewport.
01:01
If we add these to a surface as brake lines, then again,
01:04
we'll get a triangulated surface.
01:10
So we have two ways that we can create surfaces from a corridor
01:14
by using links
01:15
or by using feature lines.
01:21
The links on the top of the sub assemblies generally have two coats.
01:25
For example,
01:26
the curb is coded as curb,
01:28
but the top links are also coded as top
01:32
and it's the same for the road lane.
01:34
It is coated pave
01:36
but also top.
01:38
So we could add links to our surface from individual sub assemblies using the codes,
01:42
curb pave etc.
01:45
But we could add all the links on the top of
01:47
the corridor in one go by using the top link coats.
01:52
Similarly, the bottom of the sub assemblies all share a common code of datum.
01:58
So to create a corridor formation surface,
02:00
we can use all of the datum links
02:06
on our site.
02:06
We have our road corridor but we need to allow access to our house garages.
02:11
We need some driveways.
02:13
These white poly lines in the drawing represent the positions of the driveways.
02:18
We need to add these in our corridor before we create our surfaces.
02:23
The sub assembly we imported for the curb,
02:25
virgin footpath can adapt to add a driveway with a dropped
02:29
curb when it detects a driveway target has been added,
02:34
all of our driveway poly lines are on layer C
02:37
road
02:38
drive targets.
02:40
We're going to add these to the corridor,
02:44
pick the corridor and from the modified region panel of the corridor ribbon tab,
02:49
click on edit targets,
02:52
slip the region and in the target mapping dialogue,
02:55
we're going to add the driveways to the driveway target on the right side of the road.
03:00
Click in the object name column for the width or offset driveway target,
03:05
the target dialogue set the object type to feature lines,
03:08
survey figures and poly lines.
03:11
We can add all of our targets in one go by using select by layer
03:18
in select entities by layer, scroll down to the C dash
03:21
road
03:22
drive targets layer and select it.
03:25
Note there are seven objects on this layer
03:29
click. OK.
03:30
And then OK. Again,
03:32
to dismiss the target mapping dialogue,
03:35
the corridor will rebuild and the driveways are added to the corridor.
03:40
If I view the corridor in the object viewer,
03:42
you can see the result of adding the driveways.
03:46
Notice how the drop curve has been added for the driveway.
03:51
Now we can create a surface for our corridor,
03:55
slit the corridor
03:56
and on the modified corridor panel,
03:59
slit corridor surfaces
04:02
in the corridor surfaces,
04:03
dialog use the crate surface button on the left to create a new surface,
04:08
rename the surface to sycamore heights, top surface
04:13
in the a data region. At
04:16
the top of the dialogue set, the data type to links
04:19
and from specify code, select the top link codes,
04:24
click the add button to add them to the surface
04:29
for the surface. Select adder brake line
04:32
and set the overhang correction to top links.
04:36
Set the surface style to contours 1 ft and 5 ft design,
04:42
create another new surface and rename it to sycamore heights, datum surface
04:48
set the surface style to triangles,
04:52
add the data link codes to this surface,
04:57
select adder's brake line
04:59
and set the overhand correction to bottom links.
05:03
If there should be two overlapping links, both coded datum,
05:06
then the surface will use the lowest link of the two
05:10
click, apply and rebuild the corridor.
05:13
We may not see the result of the surfaces until we refresh the display
05:18
click. OK. And then run the Regen command.
05:21
You can clearly see the datum surfaces as triangles. In the model
05:26
note, the surfaces have been added to the services collection. In prospector
05:32
use prospector to select the Sycamore Heights corridor
05:37
over on the right hand side of the corridor,
05:39
you can see there are triangles that have been created outside of the junction area.
05:44
To remove these. We need to add boundaries to our surfaces.
05:49
Select corridor surfaces from the modified corridor panel
05:54
in the corridor surfaces. Dialogue select the boundaries tab
05:60
right click on the top surface to add a boundary
06:04
corridor extents as out of boundary
06:06
will attempt to detect the boundary automatically
06:11
add interactively can be used if the first option fails,
06:15
this will require you to manually select bounding feature lines from the corridor.
06:20
Add from polygon can be used. If all other options fail,
06:24
you need to create a polyline and add it as the boundary
06:28
select corridor extents as out a boundary
06:32
repeat this for the datum surface.
06:35
Click. Ok. And rebuild the corridor
06:38
zoom into the corridor and pick one of the contours on the corridor top surface,
06:44
review the surface in the object viewer.
06:47
You should be able to see the driveway drop curves in the surface.
06:54
Pick one of the triangles representing the datum surface and review this surface.
07:00
This represents the formation surface of the road.
07:04
You can clearly see the different depths of
07:06
construction used on the road curbs and driveways,
07:13
use the surface properties of the datum surface and set its style to no display.
07:19
Now, we'll add surfaces to the mcallister boulevard corridor,
07:24
select the corridor and click on corridor surfaces from the corridor ribbon tap
07:29
at the top surface as before
07:32
adding the top links
07:34
and selecting adder's brake line
07:36
and setting the overhang correction to
07:38
top links.
07:42
Set the style to contours 1 ft and 5 ft design.
07:47
Go to the boundaries tab and add an outer boundary.
07:51
Then click. Ok. And rebuild the corridor
07:55
use Regen to refresh the display,
07:59
select the new top surface and review it in the object viewer.
08:05
The surface looks fine until you zoom into the lay by area.
08:09
Here you can see the curves have not been modeled correctly.
08:13
This problem occurs when sub assemblies from different base lines in the corridor
08:17
overlap slightly at their edges.
08:22
Go back to the corridor surfaces for this corridor,
08:27
select the service and from add data set, the data type to feature lines
08:32
and add the codes back, curb
08:36
flow line gutter
08:38
and top cup.
08:42
These are all point codes on the curb,
08:45
click ok and rebuild the corridor
08:49
and review the surface again.
08:52
Adding the feature line codes has improved
08:54
the surface and the errors have been fixed
08:57
once all of the corridor surfaces have been built,
08:60
I could share them with other models in the project.
09:02
By creating data shortcuts,
09:06
I will select the surfaces
09:09
and corridors
09:11
and add them to the data shortcuts project.
09:15
We've seen how we can create surfaces from our corridor models
09:19
and share them together with the corridors as data shortcuts.
09:23
We can now use these surfaces for cut and fill analysis
09:27
and to create a finished ground model.
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