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Design levels and geometry for the vertical alignment of a road. Use the Profile Layout tools to create the design profile.
Type:
Tutorial
Length:
9 min.
Transcript
00:04
In the road design drawing, we have laid out our centerline horizontal alignments
00:09
and we've created some surface profiles and profile views.
00:14
We now need to design the proposed levels in geometry
00:18
for the vertical alignment of our road.
00:21
We need to create a design profile.
00:24
You can locate the profile view, you wish to work in using prospector
00:29
expand alignments,
00:30
then expand center line alignments
00:34
under the mcallister boulevard alignment, expand profile views,
00:39
right, click on the profile view and choose zoom to
00:45
here we have the profile view showing
00:47
the existing ground profile along the alignment.
00:52
Weve added some circle markers on the profile view
00:54
to help you when you are creating your design profile
00:58
on the home ribbon, go to profile, then profile creation tools.
01:03
Click on any part of the profile view to set the view you want to work in
01:08
the alignment we working with is shown here.
01:11
The profile will be given an automatic name,
01:14
it will be called mcallister boulevard layout. And the next counter
01:19
we can overwrite this with the name of our choosing. If we wish
01:23
choose the profile style design profile
01:26
and will accept
01:27
the complete label set.
01:30
Click on the design criteria, tab
01:33
select use criteria based design
01:36
and use a design criteria far
01:39
in our case, this is set to the asto 2011 standard.
01:44
We going to choose our design check set of collector
01:48
as this is the class of road were designing.
01:50
Click OK.
01:54
The profile layout tools are very similar to the alignment layout tools
01:58
except that these can only be used for a profile.
02:02
The first section is for creating by intersection point method,
02:06
we lay out tangents and it will place curves automatically,
02:10
you can add and delete intersection points
02:13
and you can move an intersection point.
02:16
Here. We have individual lines and curves of different types.
02:20
They are divided into three types, fixed floating and free.
02:26
A fixed entity is one that is fixed by points
02:29
and doesn't move when attached entities are moved.
02:33
A floating entity is attached at one end to another entity
02:37
and floats off of it.
02:39
It will adjust when the attached entity is edited.
02:44
A free entity is one that is attached to other entities at both ends.
02:48
It is free to move
02:50
when those attached entities move
02:54
on this button, you can convert auto cat lines and splines to profile entities.
03:01
We can enter intersection points in tabular form,
03:06
we can raise or lower all of our intersection points
03:11
and we can copy a profile.
03:15
These buttons here allow us to view
03:17
individual intersection points or entity properties.
03:22
This button
03:23
will extend an entity to the extent of the profile view.
03:27
We sometimes need to do this to enable our curves
03:30
and tangents to connect beyond their drawn end points.
03:35
Here, you can delete entities
03:39
and this button calls up the profile grid view which
03:42
allows you to edit the entire profile in tabular form.
03:49
The start of mcallister boulevard up to station zero is part of the existing road.
03:54
And so to continue this road, we need to match these levels. For a smooth transition.
04:00
You will snap to the circle markers on the existing ground profile
04:04
to determine the starting tangent for our design.
04:08
From the layout tools under lines
04:11
choose fix tangent best fit.
04:15
It will be a fixed tangent because there are no entities to attach it to.
04:21
We're using best fit because we want to find
04:23
the best line that fits through our ground points.
04:27
Choose the method by clicking on the screen,
04:32
turn on your o
04:33
snaps,
04:37
snap on each circle in turn and then press enter. When they've all been selected.
04:43
The regression data shows you the station and elevation of the pick points
04:48
and the offset between these points and the calculated best fit tangent.
04:55
You can exclude points from the selection
04:59
and you can tell it to pass through a point.
05:02
We want the tangent to pass through the last point we picked
05:08
click save and the tick to dismiss the dialogue.
05:14
We've now placed the first tangent. We now want to place a curve from here.
05:18
That goes through the next circle marker.
05:22
We'll use a floating curve parameter through a point
05:26
it's floating because it's attached at one end
05:30
zoom in and pick the end of the first tangent,
05:37
accept the default K value
05:39
and then snap to the center of the circle.
05:43
This will place our first curve
05:46
we're now going to go across and add the last tangent
05:56
use fix tangent two points
05:60
snap to the two circle markers. In turn,
06:04
the warning marker here
06:05
shows that the tangent doesn't meet our minimum grade defined in our design checks.
06:11
We'll fix this issue later.
06:16
The order in which you lay out your design may depend on personal
06:19
preference or on the design constraints that you need to work in.
06:25
We're now going to place a curve from our floating curve
06:28
to our fixed tangent
06:31
because it will be attached at both ends. It will be a free curve.
06:36
Choose free vertical curve. Parabola
06:41
pick the end of the first curve
06:43
and then the start of the fixed tangent
06:47
on the command line. We could specify the curve by entering a K value
06:52
a radius, a length or by picking a pass through point
06:56
select, pass through and try to snap to the center of the circle mark.
07:02
You may find that the curve disappears as you try to do this.
07:06
This is because the end point of our first curve
07:09
doesn't extend out far enough for the connection to be made.
07:14
Press escape to cancel the command.
07:16
And then on the tool bar choose extend entity and pick the end of the curve.
07:21
Now we can add our free parabola again. But this time picking the curve extension
07:26
and then the tangent.
07:29
Now it will allow us to snap to the circle marker.
07:32
And the curve completes our design profile.
07:37
We can view the profile in tabular form using the grid view
07:43
here, we can see information about our design profile
07:48
values that are not grayed out can be edited.
07:51
This will depend on whether entities are fixed floating or free.
07:57
We know that the last grade on our profile
08:01
doesn't meet our standards.
08:04
We can locate this in the last row under grade in.
08:08
We'll change the grade in as we want to keep the end point fixed,
08:13
change it to 0.5%.
08:17
This fixes the warning on the tangent,
08:21
close the grid view.
08:24
We've now completed the design of the mcallister boulevard profile.
08:28
We'll need to create similar profiles for the other alignments
08:32
and then edit them to complete our preliminary design.
Video transcript
00:04
In the road design drawing, we have laid out our centerline horizontal alignments
00:09
and we've created some surface profiles and profile views.
00:14
We now need to design the proposed levels in geometry
00:18
for the vertical alignment of our road.
00:21
We need to create a design profile.
00:24
You can locate the profile view, you wish to work in using prospector
00:29
expand alignments,
00:30
then expand center line alignments
00:34
under the mcallister boulevard alignment, expand profile views,
00:39
right, click on the profile view and choose zoom to
00:45
here we have the profile view showing
00:47
the existing ground profile along the alignment.
00:52
Weve added some circle markers on the profile view
00:54
to help you when you are creating your design profile
00:58
on the home ribbon, go to profile, then profile creation tools.
01:03
Click on any part of the profile view to set the view you want to work in
01:08
the alignment we working with is shown here.
01:11
The profile will be given an automatic name,
01:14
it will be called mcallister boulevard layout. And the next counter
01:19
we can overwrite this with the name of our choosing. If we wish
01:23
choose the profile style design profile
01:26
and will accept
01:27
the complete label set.
01:30
Click on the design criteria, tab
01:33
select use criteria based design
01:36
and use a design criteria far
01:39
in our case, this is set to the asto 2011 standard.
01:44
We going to choose our design check set of collector
01:48
as this is the class of road were designing.
01:50
Click OK.
01:54
The profile layout tools are very similar to the alignment layout tools
01:58
except that these can only be used for a profile.
02:02
The first section is for creating by intersection point method,
02:06
we lay out tangents and it will place curves automatically,
02:10
you can add and delete intersection points
02:13
and you can move an intersection point.
02:16
Here. We have individual lines and curves of different types.
02:20
They are divided into three types, fixed floating and free.
02:26
A fixed entity is one that is fixed by points
02:29
and doesn't move when attached entities are moved.
02:33
A floating entity is attached at one end to another entity
02:37
and floats off of it.
02:39
It will adjust when the attached entity is edited.
02:44
A free entity is one that is attached to other entities at both ends.
02:48
It is free to move
02:50
when those attached entities move
02:54
on this button, you can convert auto cat lines and splines to profile entities.
03:01
We can enter intersection points in tabular form,
03:06
we can raise or lower all of our intersection points
03:11
and we can copy a profile.
03:15
These buttons here allow us to view
03:17
individual intersection points or entity properties.
03:22
This button
03:23
will extend an entity to the extent of the profile view.
03:27
We sometimes need to do this to enable our curves
03:30
and tangents to connect beyond their drawn end points.
03:35
Here, you can delete entities
03:39
and this button calls up the profile grid view which
03:42
allows you to edit the entire profile in tabular form.
03:49
The start of mcallister boulevard up to station zero is part of the existing road.
03:54
And so to continue this road, we need to match these levels. For a smooth transition.
04:00
You will snap to the circle markers on the existing ground profile
04:04
to determine the starting tangent for our design.
04:08
From the layout tools under lines
04:11
choose fix tangent best fit.
04:15
It will be a fixed tangent because there are no entities to attach it to.
04:21
We're using best fit because we want to find
04:23
the best line that fits through our ground points.
04:27
Choose the method by clicking on the screen,
04:32
turn on your o
04:33
snaps,
04:37
snap on each circle in turn and then press enter. When they've all been selected.
04:43
The regression data shows you the station and elevation of the pick points
04:48
and the offset between these points and the calculated best fit tangent.
04:55
You can exclude points from the selection
04:59
and you can tell it to pass through a point.
05:02
We want the tangent to pass through the last point we picked
05:08
click save and the tick to dismiss the dialogue.
05:14
We've now placed the first tangent. We now want to place a curve from here.
05:18
That goes through the next circle marker.
05:22
We'll use a floating curve parameter through a point
05:26
it's floating because it's attached at one end
05:30
zoom in and pick the end of the first tangent,
05:37
accept the default K value
05:39
and then snap to the center of the circle.
05:43
This will place our first curve
05:46
we're now going to go across and add the last tangent
05:56
use fix tangent two points
05:60
snap to the two circle markers. In turn,
06:04
the warning marker here
06:05
shows that the tangent doesn't meet our minimum grade defined in our design checks.
06:11
We'll fix this issue later.
06:16
The order in which you lay out your design may depend on personal
06:19
preference or on the design constraints that you need to work in.
06:25
We're now going to place a curve from our floating curve
06:28
to our fixed tangent
06:31
because it will be attached at both ends. It will be a free curve.
06:36
Choose free vertical curve. Parabola
06:41
pick the end of the first curve
06:43
and then the start of the fixed tangent
06:47
on the command line. We could specify the curve by entering a K value
06:52
a radius, a length or by picking a pass through point
06:56
select, pass through and try to snap to the center of the circle mark.
07:02
You may find that the curve disappears as you try to do this.
07:06
This is because the end point of our first curve
07:09
doesn't extend out far enough for the connection to be made.
07:14
Press escape to cancel the command.
07:16
And then on the tool bar choose extend entity and pick the end of the curve.
07:21
Now we can add our free parabola again. But this time picking the curve extension
07:26
and then the tangent.
07:29
Now it will allow us to snap to the circle marker.
07:32
And the curve completes our design profile.
07:37
We can view the profile in tabular form using the grid view
07:43
here, we can see information about our design profile
07:48
values that are not grayed out can be edited.
07:51
This will depend on whether entities are fixed floating or free.
07:57
We know that the last grade on our profile
08:01
doesn't meet our standards.
08:04
We can locate this in the last row under grade in.
08:08
We'll change the grade in as we want to keep the end point fixed,
08:13
change it to 0.5%.
08:17
This fixes the warning on the tangent,
08:21
close the grid view.
08:24
We've now completed the design of the mcallister boulevard profile.
08:28
We'll need to create similar profiles for the other alignments
08:32
and then edit them to complete our preliminary design.
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