& Construction
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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
& Manufacturing
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Professional CAD/CAM tools built on Inventor and AutoCAD
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Transcript
00:03
InfoWorks ICM has many tools available to enhance the detail of 2D meshes,
00:11
beyond simply representing the topology from the ground model.
00:16
You can use mesh editing objects from external GIS files, layers displayed on the GeoPlan view, or objects within the network.
00:27
When adding 2D mesh editing objects to your model, there are a few things you should keep in mind:
00:35
If you are building detail into a mesh beyond a single street level, you are going to need good quality GIS mapping as your base data.
00:45
You can then extract, clean, and simplify the information you need into GIS files to be imported into ICM.
00:56
Use the 2D Zone properties to your advantage.
01:00
At a certain point, too much data will represent a problem.
01:05
On large catchments, you may want to build the polygons for the entirety of the 2D zone, and then import them all.
01:14
However, many of those polygons share the same key property, such as the infiltration model, but differ spatially.
01:23
This is where the 2D Zone properties can be used to your advantage,
01:28
by setting it to a specific value and omitting importing those polygons.
01:35
Data should be simplified to remove excessive vertices before being imported.
01:42
Remember that if your 2D elements are 5m2, there is typically little value in having vertices spaced less than 0.5m apart.
01:55
The addition of new objects requires the mesh to be regenerated before they are applied,
02:02
and this must be done before a simulation can take place.
02:08
The majority of objects are automatically included in the mesh during generation once they have been added to the network.
02:17
Except for voids and breaklines which must be explicitly allocated.
02:24
Ideally, object types should be added one at a time to simplify conflict resolution.
02:31
When you are adding thousands of polygons into a model and recreating a mesh, problems or errors can be difficult to isolate.
02:41
Therefore, it is always best to add object types, such as roughness zones, one at a time, and then re-mesh to ensure there are no problems.
02:54
There are some things you can do to simplify your external GIS layers before they are imported into ICM.
03:03
For example, where there are adjoining buildings, there is the potential for vertex conflicts.
03:10
If you do not need the individual building footprints to be represented
03:16
because they all share the same threshold or they are outside the area of interest, then they can be merged into a single polygon.
03:25
This can significantly simplify the quantity and complexity of input data.
03:31
However, in areas of interest, this may not always be possible, if you need to understand the individual risk to each property.
03:41
You also want to reduce any excessive vertices.
03:46
There is typically not much benefit to having individual vertices at spacings less than 0.5m, for example, especially along straight edges.
03:57
Reducing the vertex count can help to speed up digitization of the GeoPlan.
04:03
Once the import process is complete and you are working on your model, other mesh-editing considerations may come up:
04:12
Multi-part, hollow or donut polygons should be avoided as they can be difficult for the mesher to interpret correctly.
04:22
You can use the 2D zone properties to your advantage here
04:27
to help simplify inputs and eliminate the need to store polygon objects with those same properties in the model.
04:36
Gaps between buildings and any other mesh features can generate many elements with the classic meshing routine.
04:45
Remove or expand these gaps as appropriate.
04:50
Complex shapes contain many points and may require several stages of refinement.
04:57
This is best undertaken in specialist GIS software,
05:02
where you have the proper tools and routines available to process large datasets more easily.
05:10
If a high-level of detail is required for outputs,
05:14
it can be simpler to achieve this via post-processing than by building this level of detail into your model.
05:23
Asking yourself some questions about the needs of your specific model can help you to refine it.
05:30
For example:
05:32
What level of detail is required for the outputs?
05:35
Can the level of detail vary in different regions of the model?
05:40
Do all the buildings and structures need modelling explicitly?
05:45
Answering these questions can help you determine your next steps.
Video transcript
00:03
InfoWorks ICM has many tools available to enhance the detail of 2D meshes,
00:11
beyond simply representing the topology from the ground model.
00:16
You can use mesh editing objects from external GIS files, layers displayed on the GeoPlan view, or objects within the network.
00:27
When adding 2D mesh editing objects to your model, there are a few things you should keep in mind:
00:35
If you are building detail into a mesh beyond a single street level, you are going to need good quality GIS mapping as your base data.
00:45
You can then extract, clean, and simplify the information you need into GIS files to be imported into ICM.
00:56
Use the 2D Zone properties to your advantage.
01:00
At a certain point, too much data will represent a problem.
01:05
On large catchments, you may want to build the polygons for the entirety of the 2D zone, and then import them all.
01:14
However, many of those polygons share the same key property, such as the infiltration model, but differ spatially.
01:23
This is where the 2D Zone properties can be used to your advantage,
01:28
by setting it to a specific value and omitting importing those polygons.
01:35
Data should be simplified to remove excessive vertices before being imported.
01:42
Remember that if your 2D elements are 5m2, there is typically little value in having vertices spaced less than 0.5m apart.
01:55
The addition of new objects requires the mesh to be regenerated before they are applied,
02:02
and this must be done before a simulation can take place.
02:08
The majority of objects are automatically included in the mesh during generation once they have been added to the network.
02:17
Except for voids and breaklines which must be explicitly allocated.
02:24
Ideally, object types should be added one at a time to simplify conflict resolution.
02:31
When you are adding thousands of polygons into a model and recreating a mesh, problems or errors can be difficult to isolate.
02:41
Therefore, it is always best to add object types, such as roughness zones, one at a time, and then re-mesh to ensure there are no problems.
02:54
There are some things you can do to simplify your external GIS layers before they are imported into ICM.
03:03
For example, where there are adjoining buildings, there is the potential for vertex conflicts.
03:10
If you do not need the individual building footprints to be represented
03:16
because they all share the same threshold or they are outside the area of interest, then they can be merged into a single polygon.
03:25
This can significantly simplify the quantity and complexity of input data.
03:31
However, in areas of interest, this may not always be possible, if you need to understand the individual risk to each property.
03:41
You also want to reduce any excessive vertices.
03:46
There is typically not much benefit to having individual vertices at spacings less than 0.5m, for example, especially along straight edges.
03:57
Reducing the vertex count can help to speed up digitization of the GeoPlan.
04:03
Once the import process is complete and you are working on your model, other mesh-editing considerations may come up:
04:12
Multi-part, hollow or donut polygons should be avoided as they can be difficult for the mesher to interpret correctly.
04:22
You can use the 2D zone properties to your advantage here
04:27
to help simplify inputs and eliminate the need to store polygon objects with those same properties in the model.
04:36
Gaps between buildings and any other mesh features can generate many elements with the classic meshing routine.
04:45
Remove or expand these gaps as appropriate.
04:50
Complex shapes contain many points and may require several stages of refinement.
04:57
This is best undertaken in specialist GIS software,
05:02
where you have the proper tools and routines available to process large datasets more easily.
05:10
If a high-level of detail is required for outputs,
05:14
it can be simpler to achieve this via post-processing than by building this level of detail into your model.
05:23
Asking yourself some questions about the needs of your specific model can help you to refine it.
05:30
For example:
05:32
What level of detail is required for the outputs?
05:35
Can the level of detail vary in different regions of the model?
05:40
Do all the buildings and structures need modelling explicitly?
05:45
Answering these questions can help you determine your next steps.
InfoWorks ICM has many tools available to enhance the detail of 2D meshes, beyond simply representing the topology from the ground model. Use mesh editing objects from external GIS files, layers displayed on the GeoPlan view, or objects within the network.
When adding 2D mesh editing objects to a model, there are a few things to keep in mind:
There are some things that can be done to simplify external GIS layers before they are imported into ICM.
In adjoining buildings, there is the potential for vertex conflicts. If individual building footprints share the same threshold, or they are outside the area of interest, then they can be merged into a single polygon. This can significantly simplify the quantity and complexity of input data. However, in areas of interest, this may not always be possible.
Reduce excessive vertices. There is typically not much benefit to having individual vertices at spacings less than 0.5m, especially along straight edges. Reducing the vertex count can help to speed up digitization of the GeoPlan.
Once the import process is complete and the model is ready to be worked on, other mesh-editing considerations may come up:
Asking some questions about the needs of the specific model can help to refine it. For example:
What level of detail is required for the outputs?
Can the level of detail vary in different regions of the model?
Do all the buildings and structures need modelling explicitly?
Answering these questions can help to determine the next steps.
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