The Importance of BIM Technology in Historic …2014/06/23 · The Importance of BIM Technology in...
Transcript of The Importance of BIM Technology in Historic …2014/06/23 · The Importance of BIM Technology in...
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The Importance of BIM Technology in Historic
Preservation
Joseph Hwangbo, CM-BIM, ART
Solution Specialist – Architecture w/ Microdesk
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Representation of the Physical World…
Computer Laser Tape Measure
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…is Always Going to be Partial
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Examples of Representation
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Personal Experience
• State Capitol Building – as built laser scan of interior and
exterior with BIM model at LOD 400
• Hearst Castle – as built laser scan of interior and exterior with BIM
model at LOD 500
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Building Information Modeling
• Single Virtual Model
• Can be worked on Simultaneously
• Parametric Ability
• Database-based
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The I in BIM = Information
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The I in BIM = Information
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The I in BIM = Information
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The I in BIM = Information
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Level of Detail/Development
LOD 100 LOD 200 LOD 300 LOD 400
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LOD 100 – Conceptual Massing
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LOD 200 – Approx. Geometry
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LOD 400 – Fabrication
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Relevance to Historic Preservervation
• Model communicates form of historic fabric
• Includes data to identify and inventorize
• Ability to Phase to represent multiple points
in the history & transformation of the building
• Record demolition affects during bldg. rehab
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Questions to Ask
• To what extent will the existing conditions be
investigated and modeled to enable the
desired visualization and documentation?
• To what extent should existing conditions be
modeled in order to communicate how they
should be preserved or modified?
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BIM 3D – 7D
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Data
• The challenge of managing data
• The model can associate data with elements,
rooms, etc in a way that remains continuously
updated as modifications are made for new
design or to record as-built conditions
• Model can be queried for embedded data to
derive schedules & customized views
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Example of Custom Views
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Geometry
• In the past, composition of geometric views
independent of each other
• With BIM, the elements are demarcated and
interrelated
• Differing LOD’s for different purposes can coexist in
model
• Need for BIM Execution Plan
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Example BEP
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Layers
• BIM allows 3D assemblies of layers with
various properties assigned
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Example of Wall Assembly
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Form
• Computational advances of contemporary forms
in complex geometry and mathematical
patterning can be translated into BIM relating to
rehab and preservation
• Parametric tools help inform choices about new
construction that is sympathetic yet
differentiated from existing elements
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Sequencing
• Phasing of data to enable the visualization
and tracking of changes of multiple phases
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BIM Phasing & Sequencing
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Collaboration
• Entire team can work simultaneously in the
same file
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Case Studies
Video
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Hearst Castle
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Hearst Castle Entrance
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Hearst Castle Fountain
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Hearst Castle Fountain
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Q&A