AEC Integration Lab @ Georgia Tech How to deal with custom objects in Bentley Applications

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AEC Integration Lab _at_ Georgia Tech How to
deal with custom objects in Bentley Applications

• Ph.D. student Jin-Kook Lee
• Professor Charles M. Eastman
• Design Computing, College of Architecture
• Georgia Institute of Technology
• jklee_at_gatech.edu
• 08/10/2006

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Mainly deal with

• BA Bentley Architecture / Building Products
• PCS Bentley Parametric Cell Studio
• Datagroup Definition Editor for object type
  definition
• Datagroup Catalog Editor for object item
  definition
• Parametric Design / Modeling using PCS
• Case study Curved / Bended Curtain Wall

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Custom Object in Bentley Building Products
Applications share UI with BA(Subordinated)
Build parametric cell (.paz) files
Stand alone application
Parametric modeling for custom object cells
Internal smallapplications of BA
Generate xml files for custom object menu
interface for BA
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Simple process model for custom objects in BA
Datagroup definition editor
Datagroup catalog editor
Bentley Building Products
Parametric Cell Studio
Bentley Building Products
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• Bentley Architecture

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Bentley Architecture

• The focus of this Bentley Building application
  enables designers to maintain a strategy that
  addresses various essential project life cycle
  needs, including
• Space planning and mass modeling determinations
  that occur in the beginning stages of a project.
• Production-oriented activities that occur during
  modeling such as placement of walls, doors, and
  windows.
• Drawing, schedule, and report extraction that
  occurs throughout the life cycle of a project,
  and beyond.

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Building Objects Architecture Toolbox
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Objects in BA

• General type
• Contour, space, column grid
• Column
• Wall
• Door
• Window
• Floor
• Roof
• Stair
• Toilet, shelving
• User defined type
• Curtain walls
• Hand rails
• Plumbing fixtures
• Toilet accessories
• (Unlimited) Additional custom object

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Datagroup / Catalog Item definition for BA
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DataGroup Catalog Editor in BA
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Management of User-defined Object

• Placement
• Datagroup Definition
• Edit Datagroup Catalog Items
• Modeling the objects using Parametric Cell
  Studio4-1. How to create parametric objects
  behaviors
• Again Placement to the model

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1. How to place embedded custom objects
1. Architecture Modeling Toolbox
2. Fixture, Furnishing Equipment menu
3. Place User Defined Type dialogue box
4. Select Type of User Defined Objects in the
list 5. Select sub Items and modify their
properties
NEXT How to add a new object type in this list?
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2. Datagroup Definition
1. Run Datagroup Definition Editor in Bentley
Building Applications, and add new definition
files. Also create their properties.
2. .xsd files are created in datagroupsystem
folder
NEXT How to add a new item in this definition?
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3. Edit Datagroup Catalog Items
1. Run Datagroup Catalog Editor, and add new type
and their items. Also create their properties.
2. .xml files are created in datagroupcatalogs
folder
NEXT How to make geometric models?
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4. Modeling the objects using PC Studio the
kernel
1. Using PC Studio, model the objects (cell). And
publish (compile) them to .paz files
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5. Place a new custom (user-defined) object
1. Select and Modify the object items
2. Place the User Defined Object in Bentley
Architecture
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• Parametric Cell Studio

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Parametric Cell Studio (PCS)

• Stand alone application for parametric cell
  modeling
• A little bit different interface compared with
  Microstation
• Powerful yet so simple parametric design tool

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How to build parametric custom object for BA

• Components assembly of
• Combination of Constraints on
• Sophistication of Condition / Segments /
  Components and publication (compile) for Bentley
  Architecture

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Special features of PCS

• Define several components using simple drawing
  tool
• Assembled components can be defined another
  component
• Assembled components inherit all constraints of
  each component
• Path and reference line based solid modeling
• Several defined segments take charge of layer
  function and fulfill the roles of translation to
  BA
• Substantial object-oriented concept and property
  inheritance gtgt perform a kind of power copy

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Component-oriented approach
Sub components for other components / reference
line
4. Main Assembly
5. Final component
1. Basic Section
2. Basic components
3. Sub components
Various applications
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• Case Study

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Case study

• 1. Kawneer 2800 TRUSSWALL
• 2. Curved and Bended Curtain Wall
• Apply selective constraints for parametric
  modeling
• Focusing on the parametric behavior / modeling

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Case study 1. Kawneer 2800 TRUSSWALL
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Modeling process

• Section / basic drawing
• Components modeling
• Define path / reference line in each plane
• Sweep / extrude / array along path for assembly
• Constraints modeling in each plane
• Define as a final model gtgt a new component

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Constraints on XY Plane

• Distance relation between the points on the
  path line
• Distance of horizontal mullion
• Angle of path line and mullion
• Angle of path points (mullions location points)

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Constraints on XY Plane
Axono view
1. Angle of Mullion to path
1. In case of A_1 360 degree
2. Angle of Path line point A_1 350 A_2
A_3
2. In case of ML_1 3 Array distances were
changed simultaneously
3. Mullions Horizontal Distance ML_1 4 00
ML_2 ML_3
4. Array distance of Mullions As same as ML_1
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Constraints in YZ Plane
3. Array of Web following Mullion Height their
distance
1. Height of Vertical Mullion Component Assembly
2. Same Height constraint for rear mullion
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Constraints in ZX Plane
1. Height Relation of Intermediate Horizontal
2. Shape Sweeping through the path
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Inaccuracy of angle 10 degree
Solution 1. Elaborate parameters /
conditions 2. Condition control method
Example of Kawneer system Contextual placement
by angle
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Constraints of basic mullion assembly
3. Array of Web following Mullion Height their
distance
1. Height of Vertical Mullion Component Assembly
2. Same Height constraint for rear mullion
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Constraints of curved arc angle / distance
1. Angle of Mullion to path
1. In case of A_1 360 degree
2. Angle of Path line point A_1 350 A_2
A_3
2. In case of ML_1 3 Array distances were
changed simultaneously
3. Mullions Horizontal Distance ML_1 4 00
ML_2 ML_3
4. Array distance of Mullions As same as ML_1
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Constraints for Horizontal mullion Edge cutting
1. Height Relation of Intermediate
Horizontal e.g HM_Height (Main.height / 4)
M.offset
2. Paralleled cut of horizontal mullion by
bended angle w.g bend.angle 270
(360-curved.angle)/2
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Horizontal Mullion
B
d
a
b
C
c
Curtain wall path
Length a b c d Angle A B C B/2
A/2
A
Center point of arc
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B
d
b
a
C
Length a b d Angle A B C B/2
A/2
A
Center point of arc
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d
B
a
C
b
Length a b d Angle A B C B/2
A/2
A
Center point of arc
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Constraints for angled cut
A2
L1
A1
B
d
b
a
C
HM_A1
A2 540-A1 A1 270(360-HM_A1)/2
A
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Constraints for angled cut
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Curved 2800 TRUSSWALL component could be defined
another component using its variables e.g.
curtainwall system using different angle,
distance and different anchor point
Constraints in PC Studio
- Length - Angle - Semi diameter of circle -
Coincidence on a point or path line - Sweeping
along path - Array along path - drop first or
last array - distance of array
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Case study 2. Curved and Bended Curtain Wall

• Simple application of Curtain Wall Parameters

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Basic component definition
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XZ Plane Constraints
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Parameters Angle of Mullion path point / Mullion
Distance / Height And Basic component
definitions constraints
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• From Parametric Cell Studio
• To Bentley Architecture

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Extra issues for .paz format Publication

• Model3d, Plan2d, or similar segments in PC Studio
  support the contextual display in Bentley
  Architecture model
• Segment names should be provided accurately to BA
• Performance sometimes PCS shows not a good
  result due to file size, complexity and so on.
• Well-defined parametric cells are required to
  prevent inadequate parameters, e.g. limitation of
  variables(also related with performance issue)

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Contextual Display in BA
1. 2D drawing
2. 3D model
3. 3D rendered model

• Contextual Display is determined by whether the
  context is a drawing (1) or a model (2,3)

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Ready to use in BAs User defined object dialog
box
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Ready to use in BAs User defined object dialog
box
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Resources / references

• Bentley User Guide (html, chm)
• Bentley Reference Guide and Example Movies
  (250MB)
• Bentley Discussion Group- bentley.triforma.archit
  ectural 5,375 posted- bentley.microstation.pcst
  udio 452 posted
• Example files for PCS (.pac, .paz)