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Work with design criteria and create check sets for your civil road design projects.
Type:
Tutorial
Length:
10 min.
Transcript
00:03
When we design our alignments in civil 3D,
00:06
we will want to know that we are meeting any national or local design standards.
00:12
There are two ways that we can apply checking to our design
00:15
using a design criteria of file and using checks sets.
00:20
The design criteria file generally comes as part of a country kit
00:24
that can be installed with civil 3D.
00:27
The file is in XML format
00:29
and contains tables of standards for highway design
00:33
such as formula for super elevation of the road at different design speeds
00:38
and it can prompt us to enter the correct values during design,
00:42
you can edit or even create your own design criteria file.
00:47
The design criteria file is typically saved on a
00:50
server for the whole design team to access.
00:53
We can assign a table from the design criteria file to individual alignments.
00:59
Additional design criteria that might be desirable but aren't included in
01:03
a design criteria file can be added as design checks.
01:07
Individual design checks are grouped together as a design check set
01:12
and the check set can be applied to the alignment
01:15
checks and check sets are saved in the drawing file
01:18
and would normally be defined in our project template.
01:22
In our model, we have some residential roads.
01:24
These are the subdivision roads, sycamore, heights and woodside view
01:29
and we have a road that leaks neighborhoods.
01:31
This is our collector road mcallister Boulevard.
01:35
We're going to create some design checks so that we
01:37
can see whether our design choices such as curve radii
01:41
or tangent lengths
01:42
meet the standards that we are required to work to
01:45
for our subdivision roads. Our tangents should be a minimum length of 100 ft
01:51
and our curve should have a minimum radius of 100 and 60 ft
01:55
for our collector roads. Our tangents should be a minimum length of 300 ft
02:00
and our curves should have a minimum radius of 1200 ft
02:04
to add the design checks in the drawing.
02:07
Click on the settings tab on the civil 3d tool, space,
02:11
expand alignment and then expand the design checks. Folder,
02:15
design checks are grouped together in a check set.
02:19
Individual checks are created by their element type and then added to a check set.
02:25
First, we're going to add some checks for our alignment. Tangents
02:29
select the line folder right, click and choose new
02:33
in the design check dialogue,
02:35
change the name
02:37
to subdivision
02:38
min length 100.
02:41
The name will be displayed on the warning symbol, tool tip.
02:44
So it's useful to name it. So you know what criteria it has been checked.
02:49
Click on the insert property button
02:52
here,
02:53
you'll find relevant properties for the alignment that you can use in your checks.
02:57
Choose the length property.
02:59
This will add it into the body of the expression.
03:02
Click on the greater than an equal to symbol
03:05
and then type 100.
03:07
This expression tells civil 3d that the length of the
03:10
tangent line should be greater than or equal to 100.
03:13
Otherwise it will display a warning
03:16
expressions can also include visual basic functions
03:19
which can be added used in the functions but
03:25
click. OK? To save the check,
03:30
go back to the line folder in settings, right? Click and choose new
03:36
rename this design check to collector min length 300
03:44
from the expressions add the length property
03:47
then greater than or equal to
03:49
and then 300
03:51
click. OK?
03:55
Now we'll add some curve design checks in the settings.
03:58
Tab click on curve, right click and choose new
04:03
rename this design check
04:05
to subdivision
04:07
min
04:08
rad
04:12
insert the radius property into the expression
04:15
and then add greater than or equal to
04:18
then 160
04:20
click. OK.
04:23
Add another curve check this time for the collector road
04:27
name it collector min
04:29
rad
04:35
at the radius property
04:38
then select greater than an equal to
04:41
then 1200
04:45
click. OK.
04:47
Now we'll group our design checks into check sets
04:53
in the settings.
04:53
Tab click on the design, check sets folder, right click and choose new
05:01
in the information tab rename the checks set to subdivision
05:07
select the design checks tab
05:09
and with the type set to line,
05:11
select the line check, subdivision min length 100
05:15
click. Add
05:16
this will add the design check to the check set,
05:21
change the type to curve and then add the subdivision min
05:24
rad 160 check
05:27
click. OK. To save the check set
05:32
now create a new design check set
05:35
on the information tab,
05:37
change the name to collector
05:39
in the design check tab for type line,
05:42
add the collector min length 300 check,
05:46
change the type to curve and add the collector min
05:50
rad 1200 check
05:52
click. OK. To save the check set
05:55
in the model, select the alignment for the collector road. Mcallister boulevard,
05:59
right click and choose alignment properties.
06:02
Click on the design criteria tab
06:05
on the left side of the dialogue,
06:07
we have a table that shows the design speeds assigned to the alignment.
06:11
A road could have multiple speeds aside along its length and
06:15
each one can have a station value denoting where it takes effect
06:19
the tables in the design criteria file and in your
06:23
own check sets can reference the design speeds in their expressions
06:27
and apply different checking criteria for each one.
06:31
This alignment currently has one that is set to 60
06:34
MPH.
06:35
You can add additional speeds using these buttons,
06:40
add a new design speed to mcallister boulevard,
06:44
set the station for the new design speed to 2300.
06:49
This will be at the approach to the roundabout,
06:54
you can also pick the station in the drawing, using the button on the side of the cell
06:59
set, the new design speed to 25
07:01
mph,
07:04
choose use criteria based design and also use design criteria file,
07:10
use the browse button to view the files.
07:12
We'll use the Imperial 2011 design standards
07:18
in the default criteria
07:20
set the
07:21
minimum radius table to E max 4%.
07:25
This table is for a maximum of 4% super elevation
07:30
set,
07:30
the transition length table to two lane and
07:33
the attainment method should be crowned roadway.
07:36
We aren't using any super innovation for our alignment at this stage.
07:39
So only some of the checks from these tables will apply.
07:43
Select use design checks, set and set the checks set to collector
07:47
click. Ok.
07:50
We can now see the result of the design
07:52
checks as warning symbols displayed on the alignment,
07:56
hovering the cursor on the warning symbol will display a
07:59
tool tip showing the design check that was violated.
08:03
This warning is from the design criteria file
08:06
and this warning is from our collector design check set.
08:11
We're now going to apply the subdivision checks set to the residential roads,
08:15
select the alignment sycamore heights, right?
08:18
Click and choose alignment properties
08:21
on the design criteria. Tab
08:24
set the road design speed to 25
08:27
MPH.
08:29
Select use criteria based design.
08:32
We won't be using the design criteria far for these roads.
08:36
So make sure that option isn't selected,
08:39
select, use design checks set and choose subdivision for the checks set.
08:44
Click. Ok.
08:47
Again, we have warning symbols displayed on the alignment.
08:52
The curve radii on this alignment are too small and don't meet our design standard.
08:60
Use the same process to apply design checks to the woodside view alignment
09:06
in the alignment, properties on the design criteria. Tab
09:09
set the design speed to 25
09:11
MPH.
09:13
choose criteria based design
09:16
and select design check set and select subdivision checks set. Click. Ok.
09:23
The design check violations for checks sets we've applied will also
09:27
be visible in the alignment grid view in the geometry editor.
Video transcript
00:03
When we design our alignments in civil 3D,
00:06
we will want to know that we are meeting any national or local design standards.
00:12
There are two ways that we can apply checking to our design
00:15
using a design criteria of file and using checks sets.
00:20
The design criteria file generally comes as part of a country kit
00:24
that can be installed with civil 3D.
00:27
The file is in XML format
00:29
and contains tables of standards for highway design
00:33
such as formula for super elevation of the road at different design speeds
00:38
and it can prompt us to enter the correct values during design,
00:42
you can edit or even create your own design criteria file.
00:47
The design criteria file is typically saved on a
00:50
server for the whole design team to access.
00:53
We can assign a table from the design criteria file to individual alignments.
00:59
Additional design criteria that might be desirable but aren't included in
01:03
a design criteria file can be added as design checks.
01:07
Individual design checks are grouped together as a design check set
01:12
and the check set can be applied to the alignment
01:15
checks and check sets are saved in the drawing file
01:18
and would normally be defined in our project template.
01:22
In our model, we have some residential roads.
01:24
These are the subdivision roads, sycamore, heights and woodside view
01:29
and we have a road that leaks neighborhoods.
01:31
This is our collector road mcallister Boulevard.
01:35
We're going to create some design checks so that we
01:37
can see whether our design choices such as curve radii
01:41
or tangent lengths
01:42
meet the standards that we are required to work to
01:45
for our subdivision roads. Our tangents should be a minimum length of 100 ft
01:51
and our curve should have a minimum radius of 100 and 60 ft
01:55
for our collector roads. Our tangents should be a minimum length of 300 ft
02:00
and our curves should have a minimum radius of 1200 ft
02:04
to add the design checks in the drawing.
02:07
Click on the settings tab on the civil 3d tool, space,
02:11
expand alignment and then expand the design checks. Folder,
02:15
design checks are grouped together in a check set.
02:19
Individual checks are created by their element type and then added to a check set.
02:25
First, we're going to add some checks for our alignment. Tangents
02:29
select the line folder right, click and choose new
02:33
in the design check dialogue,
02:35
change the name
02:37
to subdivision
02:38
min length 100.
02:41
The name will be displayed on the warning symbol, tool tip.
02:44
So it's useful to name it. So you know what criteria it has been checked.
02:49
Click on the insert property button
02:52
here,
02:53
you'll find relevant properties for the alignment that you can use in your checks.
02:57
Choose the length property.
02:59
This will add it into the body of the expression.
03:02
Click on the greater than an equal to symbol
03:05
and then type 100.
03:07
This expression tells civil 3d that the length of the
03:10
tangent line should be greater than or equal to 100.
03:13
Otherwise it will display a warning
03:16
expressions can also include visual basic functions
03:19
which can be added used in the functions but
03:25
click. OK? To save the check,
03:30
go back to the line folder in settings, right? Click and choose new
03:36
rename this design check to collector min length 300
03:44
from the expressions add the length property
03:47
then greater than or equal to
03:49
and then 300
03:51
click. OK?
03:55
Now we'll add some curve design checks in the settings.
03:58
Tab click on curve, right click and choose new
04:03
rename this design check
04:05
to subdivision
04:07
min
04:08
rad
04:12
insert the radius property into the expression
04:15
and then add greater than or equal to
04:18
then 160
04:20
click. OK.
04:23
Add another curve check this time for the collector road
04:27
name it collector min
04:29
rad
04:35
at the radius property
04:38
then select greater than an equal to
04:41
then 1200
04:45
click. OK.
04:47
Now we'll group our design checks into check sets
04:53
in the settings.
04:53
Tab click on the design, check sets folder, right click and choose new
05:01
in the information tab rename the checks set to subdivision
05:07
select the design checks tab
05:09
and with the type set to line,
05:11
select the line check, subdivision min length 100
05:15
click. Add
05:16
this will add the design check to the check set,
05:21
change the type to curve and then add the subdivision min
05:24
rad 160 check
05:27
click. OK. To save the check set
05:32
now create a new design check set
05:35
on the information tab,
05:37
change the name to collector
05:39
in the design check tab for type line,
05:42
add the collector min length 300 check,
05:46
change the type to curve and add the collector min
05:50
rad 1200 check
05:52
click. OK. To save the check set
05:55
in the model, select the alignment for the collector road. Mcallister boulevard,
05:59
right click and choose alignment properties.
06:02
Click on the design criteria tab
06:05
on the left side of the dialogue,
06:07
we have a table that shows the design speeds assigned to the alignment.
06:11
A road could have multiple speeds aside along its length and
06:15
each one can have a station value denoting where it takes effect
06:19
the tables in the design criteria file and in your
06:23
own check sets can reference the design speeds in their expressions
06:27
and apply different checking criteria for each one.
06:31
This alignment currently has one that is set to 60
06:34
MPH.
06:35
You can add additional speeds using these buttons,
06:40
add a new design speed to mcallister boulevard,
06:44
set the station for the new design speed to 2300.
06:49
This will be at the approach to the roundabout,
06:54
you can also pick the station in the drawing, using the button on the side of the cell
06:59
set, the new design speed to 25
07:01
mph,
07:04
choose use criteria based design and also use design criteria file,
07:10
use the browse button to view the files.
07:12
We'll use the Imperial 2011 design standards
07:18
in the default criteria
07:20
set the
07:21
minimum radius table to E max 4%.
07:25
This table is for a maximum of 4% super elevation
07:30
set,
07:30
the transition length table to two lane and
07:33
the attainment method should be crowned roadway.
07:36
We aren't using any super innovation for our alignment at this stage.
07:39
So only some of the checks from these tables will apply.
07:43
Select use design checks, set and set the checks set to collector
07:47
click. Ok.
07:50
We can now see the result of the design
07:52
checks as warning symbols displayed on the alignment,
07:56
hovering the cursor on the warning symbol will display a
07:59
tool tip showing the design check that was violated.
08:03
This warning is from the design criteria file
08:06
and this warning is from our collector design check set.
08:11
We're now going to apply the subdivision checks set to the residential roads,
08:15
select the alignment sycamore heights, right?
08:18
Click and choose alignment properties
08:21
on the design criteria. Tab
08:24
set the road design speed to 25
08:27
MPH.
08:29
Select use criteria based design.
08:32
We won't be using the design criteria far for these roads.
08:36
So make sure that option isn't selected,
08:39
select, use design checks set and choose subdivision for the checks set.
08:44
Click. Ok.
08:47
Again, we have warning symbols displayed on the alignment.
08:52
The curve radii on this alignment are too small and don't meet our design standard.
08:60
Use the same process to apply design checks to the woodside view alignment
09:06
in the alignment, properties on the design criteria. Tab
09:09
set the design speed to 25
09:11
MPH.
09:13
choose criteria based design
09:16
and select design check set and select subdivision checks set. Click. Ok.
09:23
The design check violations for checks sets we've applied will also
09:27
be visible in the alignment grid view in the geometry editor.
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