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Create and edit features lines to grade a site and create a finished ground model.
Type:
Tutorial
Length:
10 min.
Transcript
00:04
We're now going to create some feature lines for our design
00:07
that we can use to grade the site and create a finished ground model.
00:12
We'll start by creating a site for the residential housing
00:17
in prospector. Right? Click on the sites collection and choose new
00:23
in the site properties. Set the name to house plots and click. Ok.
00:28
Expanding the house plots site, you can see the feature lines collection
00:32
which we will add our feature lines to.
00:35
Now we'll create a feature line for this fence line
00:39
on the home ribbon tab,
00:40
create design panel, select feature line,
00:43
then create feature line
00:47
in crate feature lines. Make sure the site is set to house plots,
00:53
name the feature line fence one
00:58
for the style select second priority.
01:02
We want this feature line to take its levels for a many first priority line.
01:07
Click. OK.
01:09
For the start point of the line snapped to the northern end of the fence poly line
01:15
on the command line. It's showing the selected elevation.
01:18
You can accept this
01:20
type in a new value
01:21
or choose to obtain the elevation from a surface
01:25
select surface and ensure the surface is set to existing ground.
01:30
The relative elevation to surface option would allow
01:33
us to set the elevation relative to the surface
01:36
and enter a relative height above or below it.
01:39
We
01:39
will not be using this option
01:43
click ok. And the surface elevation will be set.
01:47
Now select the end point by snapping to the other end of the line.
01:52
This time, we have more choices on the command line for the elevation
01:57
grade will allow us to enter a gradient from the start point. As a percentage
02:03
slope will allow us to set a slope
02:06
as one in something
02:10
difference will allow us to enter a height difference from the start point
02:16
transition will enable us to pick more vertices
02:20
and then select an end elevation
02:23
with all the vertices elevations between set by interpolation.
02:30
Select the surface option and use the existing ground as before
02:35
press enter to end the command,
02:38
pick your new feature line and from the feature line ribbon tab,
02:41
edit elevations panel, click on elevation editor
02:47
in the elevation editor.
02:48
You can see there is a row of tool buttons at
02:50
the top which you can use to set the elevations,
02:56
move your cursor into the drawing area and
02:58
press escape to clear the triangle vertex markers.
03:02
Now when you select a row in the table,
03:04
you can see the marker in the model shows you the vertex you have clicked on.
03:10
You can set the grade from a vertex or point of intersection as they are called
03:14
to the previous or next P I
03:16
by using the grade back and gra head columns
03:20
set the grade ahead for the first row to five.
03:25
This sets the elevation of the second point to 5% up from the first point.
03:32
You can use the grade back to do the reverse
03:37
from the tool wire at the top. Click on the insert elevation point button
03:43
in the drawing,
03:44
you can select an intermediate elevation point along the feature line.
03:48
Pick a point anywhere along the line
03:51
in the insert PVI dialogue. You can change the station value to 100
03:56
you can then set an elevation for the point.
03:60
This is not a new P, it's just an intermediate gradient breakpoint.
04:06
You can now use this point in the elevation editor
04:09
to set the gradient ahead and back
04:11
to determine the start and end elevations of the line.
04:16
Delete the elevation point,
04:19
select both rows in the editor and click on the elevations from surface button.
04:25
The surface is set to existing ground,
04:29
click. OK? And you will see the elevations and grades have changed,
04:34
select both rows again.
04:36
But this time use relative to surface
04:40
and select the existing ground surface.
04:44
We now have new columns in the editor.
04:48
If you change the value in the elevation derived from column
04:52
from absolute elevation to relative elevation,
04:56
you can then enter a relative height above or below the surface.
05:01
When you use this option,
05:03
the feature line will be dynamically linked to the surface.
05:06
And if the surface or the position of the line is edited,
05:10
the elevations will update to stay relative to the surface.
05:14
We can use this functionality to create road
05:17
islands that are linked to the road surface.
05:19
For example,
05:21
set the relative to surface option back to none,
05:26
set both rows back to the existing ground surface.
05:31
You can incrementally raise or lower elevations by
05:35
setting a value using the set increment button
05:38
and then use the raise or lower incrementally buttons to edit the elevations.
05:44
Close the elevation editor.
05:46
Now we will create a feature line from objects
05:50
on the crate design panel,
05:52
select feature line then create feature line from objects.
05:56
You can convert lines,
05:58
arcs and poly lines to feature lines and you can pick them through an X
06:02
ref
06:04
select the house polyline has shown
06:07
it will be saved in the house plot site.
06:11
Set the name to house four
06:15
for the style use second priority as we want this line to set
06:19
the elevations on any other crossing feature line except for first priority lines,
06:28
select assign elevations and click. Ok.
06:32
In the sine elevations set the from surface option
06:35
and use existing ground
06:39
click. Ok.
06:42
Review the elevations using the elevation editor.
06:47
We want the house plot to be flat
06:49
set to approximately the lowest ground elevation,
06:55
set the elevation of all the rows to 667.5.
07:01
Close the elevation editor
07:05
when I select a feature line on the feature line ribbon tab.
07:08
There are two buttons that control the visibility
07:11
of the edit geometry and edit elevations panels.
07:15
These panels contain additional tools for editing feature lines.
07:22
We can add or delete ps
07:25
we can break trim
07:28
join or reverse a feature line.
07:31
We can use different methods to add curves to a feature line.
07:37
Here we are smoothing the feature line.
07:42
We can also create offset feature lines,
07:45
add crossing points
07:47
and weed our feature lines
07:52
for editing elevations.
07:54
We can add and delete elevation points
07:59
using quick elevation edit.
08:01
We can edit the elevations of the feature line in the drawing
08:05
and set both forward and back gradients.
08:10
Set elevation by reference allows us to set a
08:13
pi elevation by grade or slope from a reference point
08:21
adjacent elevations by reference allows us to project elevations with a grade
08:27
from an adjacent feature line like this.
08:31
Finally, we are going to create a feature line from our reference corridor
08:37
from the crate design panel,
08:39
feature lines button select crate feature line from corridor,
08:45
select the corridor feature line in the drawing as shown and then press enter.
08:52
There are two feature lines at this location,
08:55
grass strip and lock grading,
08:59
deselect grass strip,
09:03
set the sight for lo grading to house plots
09:06
and set the style to first priority.
09:10
Click on the extract button to draw the feature light.
09:16
The feature line that is created is an auto feature line.
09:18
It will remain dynamically linked to the corridor
09:22
and will update if the corridor is edited.
09:26
When I look at the fence line in the elevation editor,
09:28
you can see the first point has a different symbol.
09:32
This indicates that its level is derived from a crossing feature line.
09:36
The corridor feature line is set to style first priority.
09:39
And so it has modified this elevation as these lines meet.
09:44
If I try to edit this value, it will reset it to the corridor feature line elevation.
09:50
We use this behavior to control our feature lines
09:53
ensuring that when I add them to a surface,
09:55
they will share a common elevation.
09:59
In this example. If the corridor is changed
10:01
the end of the fence line then will also change automatically.
10:07
We've now explored how we can create and edit feature
10:10
lines to define elevations and brake lines for our site.
Video transcript
00:04
We're now going to create some feature lines for our design
00:07
that we can use to grade the site and create a finished ground model.
00:12
We'll start by creating a site for the residential housing
00:17
in prospector. Right? Click on the sites collection and choose new
00:23
in the site properties. Set the name to house plots and click. Ok.
00:28
Expanding the house plots site, you can see the feature lines collection
00:32
which we will add our feature lines to.
00:35
Now we'll create a feature line for this fence line
00:39
on the home ribbon tab,
00:40
create design panel, select feature line,
00:43
then create feature line
00:47
in crate feature lines. Make sure the site is set to house plots,
00:53
name the feature line fence one
00:58
for the style select second priority.
01:02
We want this feature line to take its levels for a many first priority line.
01:07
Click. OK.
01:09
For the start point of the line snapped to the northern end of the fence poly line
01:15
on the command line. It's showing the selected elevation.
01:18
You can accept this
01:20
type in a new value
01:21
or choose to obtain the elevation from a surface
01:25
select surface and ensure the surface is set to existing ground.
01:30
The relative elevation to surface option would allow
01:33
us to set the elevation relative to the surface
01:36
and enter a relative height above or below it.
01:39
We
01:39
will not be using this option
01:43
click ok. And the surface elevation will be set.
01:47
Now select the end point by snapping to the other end of the line.
01:52
This time, we have more choices on the command line for the elevation
01:57
grade will allow us to enter a gradient from the start point. As a percentage
02:03
slope will allow us to set a slope
02:06
as one in something
02:10
difference will allow us to enter a height difference from the start point
02:16
transition will enable us to pick more vertices
02:20
and then select an end elevation
02:23
with all the vertices elevations between set by interpolation.
02:30
Select the surface option and use the existing ground as before
02:35
press enter to end the command,
02:38
pick your new feature line and from the feature line ribbon tab,
02:41
edit elevations panel, click on elevation editor
02:47
in the elevation editor.
02:48
You can see there is a row of tool buttons at
02:50
the top which you can use to set the elevations,
02:56
move your cursor into the drawing area and
02:58
press escape to clear the triangle vertex markers.
03:02
Now when you select a row in the table,
03:04
you can see the marker in the model shows you the vertex you have clicked on.
03:10
You can set the grade from a vertex or point of intersection as they are called
03:14
to the previous or next P I
03:16
by using the grade back and gra head columns
03:20
set the grade ahead for the first row to five.
03:25
This sets the elevation of the second point to 5% up from the first point.
03:32
You can use the grade back to do the reverse
03:37
from the tool wire at the top. Click on the insert elevation point button
03:43
in the drawing,
03:44
you can select an intermediate elevation point along the feature line.
03:48
Pick a point anywhere along the line
03:51
in the insert PVI dialogue. You can change the station value to 100
03:56
you can then set an elevation for the point.
03:60
This is not a new P, it's just an intermediate gradient breakpoint.
04:06
You can now use this point in the elevation editor
04:09
to set the gradient ahead and back
04:11
to determine the start and end elevations of the line.
04:16
Delete the elevation point,
04:19
select both rows in the editor and click on the elevations from surface button.
04:25
The surface is set to existing ground,
04:29
click. OK? And you will see the elevations and grades have changed,
04:34
select both rows again.
04:36
But this time use relative to surface
04:40
and select the existing ground surface.
04:44
We now have new columns in the editor.
04:48
If you change the value in the elevation derived from column
04:52
from absolute elevation to relative elevation,
04:56
you can then enter a relative height above or below the surface.
05:01
When you use this option,
05:03
the feature line will be dynamically linked to the surface.
05:06
And if the surface or the position of the line is edited,
05:10
the elevations will update to stay relative to the surface.
05:14
We can use this functionality to create road
05:17
islands that are linked to the road surface.
05:19
For example,
05:21
set the relative to surface option back to none,
05:26
set both rows back to the existing ground surface.
05:31
You can incrementally raise or lower elevations by
05:35
setting a value using the set increment button
05:38
and then use the raise or lower incrementally buttons to edit the elevations.
05:44
Close the elevation editor.
05:46
Now we will create a feature line from objects
05:50
on the crate design panel,
05:52
select feature line then create feature line from objects.
05:56
You can convert lines,
05:58
arcs and poly lines to feature lines and you can pick them through an X
06:02
ref
06:04
select the house polyline has shown
06:07
it will be saved in the house plot site.
06:11
Set the name to house four
06:15
for the style use second priority as we want this line to set
06:19
the elevations on any other crossing feature line except for first priority lines,
06:28
select assign elevations and click. Ok.
06:32
In the sine elevations set the from surface option
06:35
and use existing ground
06:39
click. Ok.
06:42
Review the elevations using the elevation editor.
06:47
We want the house plot to be flat
06:49
set to approximately the lowest ground elevation,
06:55
set the elevation of all the rows to 667.5.
07:01
Close the elevation editor
07:05
when I select a feature line on the feature line ribbon tab.
07:08
There are two buttons that control the visibility
07:11
of the edit geometry and edit elevations panels.
07:15
These panels contain additional tools for editing feature lines.
07:22
We can add or delete ps
07:25
we can break trim
07:28
join or reverse a feature line.
07:31
We can use different methods to add curves to a feature line.
07:37
Here we are smoothing the feature line.
07:42
We can also create offset feature lines,
07:45
add crossing points
07:47
and weed our feature lines
07:52
for editing elevations.
07:54
We can add and delete elevation points
07:59
using quick elevation edit.
08:01
We can edit the elevations of the feature line in the drawing
08:05
and set both forward and back gradients.
08:10
Set elevation by reference allows us to set a
08:13
pi elevation by grade or slope from a reference point
08:21
adjacent elevations by reference allows us to project elevations with a grade
08:27
from an adjacent feature line like this.
08:31
Finally, we are going to create a feature line from our reference corridor
08:37
from the crate design panel,
08:39
feature lines button select crate feature line from corridor,
08:45
select the corridor feature line in the drawing as shown and then press enter.
08:52
There are two feature lines at this location,
08:55
grass strip and lock grading,
08:59
deselect grass strip,
09:03
set the sight for lo grading to house plots
09:06
and set the style to first priority.
09:10
Click on the extract button to draw the feature light.
09:16
The feature line that is created is an auto feature line.
09:18
It will remain dynamically linked to the corridor
09:22
and will update if the corridor is edited.
09:26
When I look at the fence line in the elevation editor,
09:28
you can see the first point has a different symbol.
09:32
This indicates that its level is derived from a crossing feature line.
09:36
The corridor feature line is set to style first priority.
09:39
And so it has modified this elevation as these lines meet.
09:44
If I try to edit this value, it will reset it to the corridor feature line elevation.
09:50
We use this behavior to control our feature lines
09:53
ensuring that when I add them to a surface,
09:55
they will share a common elevation.
09:59
In this example. If the corridor is changed
10:01
the end of the fence line then will also change automatically.
10:07
We've now explored how we can create and edit feature
10:10
lines to define elevations and brake lines for our site.
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