Model View Definitions For Precast Concrete

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Model View Definitions ForPrecast Concrete
PCI Specifiers and Implementers Workshop
Chuck Eastman Ivan Panushev Shiva Aram Manu
Venugopal Richard See
April 24-5, 20009, Chicago
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Model View Definitions ForPrecast Concrete
Chair Michael LaNier BERGER/ABAM Engineers Inc. Chair Michael LaNier BERGER/ABAM Engineers Inc.
Projects led by Precasters Jason Lien - chair Encon United Jennifer Huber Encon United Monty Overstreet FDG, Inc Mike Sloter IPC Inc Mark Kraft CEG Engineers Projects where Precaster is a subcontractor Michael Slobojan chair Structureworks Mark Potter Finfrock Industries Davis Chauviere HKS Inc Charles Pool Tekla Dieter Maucher Tindall Corporation Jim Davis Stresscon
Architectural Precast David Orndorff - chair Shockey Precast John Wang Mid State Precast Mike LaNier BERGER/ABAM Engineers Inc. Aaron Fink Oldcastle Precast Fabrication through Erection Mike Putich - chair Dan van Vieren Concrete Vision Wayne Norris Metromont AJ Scarfato Metromont Earle Kennett NIBS Wayne Kassian Kassian Dyck Assoc Karen Laptas Blue Ridge Design, Inc.
Technical Advisory Team Chuck Eastman Georgia Tech Rafael Sacks Technion, Israel Institute of Technology Ivan Panushev Georgia Tech Shiva Aram Georgia Tech Manu Venugopal Georgia Tech Technical Advisory Team Chuck Eastman Georgia Tech Rafael Sacks Technion, Israel Institute of Technology Ivan Panushev Georgia Tech Shiva Aram Georgia Tech Manu Venugopal Georgia Tech
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Background Completed IDM
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Background Completed IDM
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Workflow and Use Case Exchanges
Within workflows, identify important data
exchanges
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IDM Exchange Specification
These specifications are called the IDM
Requirements
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Notion of Concepts
Concepts are Information Classes
Information content may vary, but the information
structure may be shared
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Notion of Concepts
Concepts are Information Classes
Information content may vary, but the information
structure may be shared implemented in
translator once, validated and certified
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Top-Level Concepts
Precast-Specific Concepts
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Types and Instances in the Precast MVD
Concept Definition
Objectified Relations
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Mapping from IDM to IFC Bindings EMs
Concepts
Exchange Model
IDM Requirements
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IFC Spatial Structure
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Ifc Spatial Hierarchy
Objectified relations
Space Object carries usage (thus loads)
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Ifc Extensibility
The IFC is an extensible schema that allows
growth and refinement.
Each release responds to user input and
specialized domains within AEC such as precast
The current production release is 2.x3, with 2.x4
in alpha release.
The Georgia tech team has identified some
extensions needed for precast.
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Extensions to Release 2.x4
Extend Standard Beam Types
TYPE IfcBeamTypeEnum ENUMERATION OF TYPE IfcBeamTypeEnum ENUMERATION OF

END_TYPE END_TYPE
( BEAM,JOIST,LINTEL,T_BEAM,USERDEFINED,NOTDEFINED)
New definition
TYPE IfcBeamTypeEnum ENUMERATION OF TYPE IfcBeamTypeEnum ENUMERATION OF

END_TYPE END_TYPE
( BEAM,JOIST,LINTEL,T_BEAM, INVERTED_T_BEAM, L_BEAM, PRECAST_SPANDREL, DOUBLE_TEE, HOLLOWCORE,USERDEFINED,NOTDEFINED)
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Extensions to Release 2.x4
Slab Property-Set
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Extensions to Release 2.x4
Precast Module
ENTITY IfcModule SUBTYPE OF (IfcBuildingElement)
END_ENTITY As is done for all of the other
building products, an IfcModuleType entity should
also be added. ENTITY IfcModuleType SUBTYPE OF (If
cBuildingElementType) END_ENTITY
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Extensions to Release 2.x4
Precast Profiles
Hollowcore
NOTE Key chamfers and draft chamfer are all 45 degree chamfers
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Extensions to Release 2.x4
Precast Profiles
Doubletee
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Extensions to Release 2.x4
Reinforcing Pattern
ENTITY IfcReinforcingPattern SUBTYPE OF (IfcReinf
orcingBar) BarSpacing LIST OF 1?
IfcPositiveLengthMeasure RowDirection
IfcDirection END_ENTITY

ReinforcingBarRow 3
ReinforcingBarRow 2
RowDirection
S3
ReinforcingBar
S1
S2

BarSpacings
usable by both rebar and tendons
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Extensions to Release 2.x4
Reinforcing Bending Pattern
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Extensions to Release 2.x4
Reinforcing Bending Pattern
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End of Introduction