what's in your structural model? understanding detail-level requirements using revit®...
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What's in Your Structural Model? Understanding
Detail-Level Requirements Using Revit® Structure
Derek J. Gilbert, P.E.Senior Structural Engineer
Foley Buhl Roberts & Associates
Image courtesy of Hobart, ez, Ramos, Maguey, and nez
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Session Objectives
Detail level terminology, model scope, and complexities
Model Progression Documents
Identify and communicate BIM deliverables
Revit Detail Level Examples
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Agenda
AIA E202 Document Overview
Levels of Development
Revit Detail Level Examples
Autodesk BIM Deployment Level of Detail Exhibit
The Department of Veteran Affairs BIM Object/Element Matrix
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Revit …. Kids!!!
Change everything – Revit process is change
Distractions – Analysis…Updates…Borrowing Elements
Time Management
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AIA E202 Overview
General Provisions
Protocol
Level of Development
Model Elements
Model Element Table
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AIA E202 Article 1 General Provisions
Level of Development (LOD)
AKA Level of Detail, Detail Levels
Model Elements
Model Element Author
Model User
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AIA E202 Article 2 Protocol
Coordination and Conflicts
Model Ownership
Model Management
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AIA E202 Article 3 Level of Development
LOD 100 LOD 200 LOD 300 LOD 400 LOD 500
Model Element Table
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AIA E202 LOD 100
Conceptual Design Phase
Schematic/Narrative
Model Content Requirements
“Overall Building Massing Indicative of
Area, Height, Volume, Location, and Orientation.”
Authorized Uses
Analysis – Volume, Area, Orientation only
Cost – Square foot, generic
Schedule – General Phases
Optional – Other Authorized Uses
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AIA E202 LOD 100 – SE
Story Heights via Level Lines
Floor and Roof Areas via Schedules
Openings via Glazing (Windows & Curtain Walls)
Unusual or Complex Geometries
Torsional Irregularities
Sloped Facades & Sloped Columns
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AIA E202 LOD 200
Design Development (DD)
IDP – Detailed Design Phase
Approximate Geometry
Model Content Requirements
“Generalized Systems or Assemblies with Approximate Quantities,
Size, Shape, Location, and Orientation.”
Authorized Uses
Analysis – Systems Performance
Cost – Quantity/Volume Estimates
Schedule – Major Elements/Systems and Time
Optional – Other Authorized Uses
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AIA E202 LOD 200 – SE
Start Modeling (Native or via Analysis Import)
Levels, Grids
Foundation Elements
Walls, Piers/Pilasters/Pedestals, Slabs, Grade Beams, Isolated
Superstructure Elements
Beams, Columns, Brace, Truss, Floor Slabs, Roof Decks
Key is “Approximate” or Placeholders
All beams Wide Flange shapes vs design size
Roof Framing Flat
Brick shelves excluded
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AIA E202 LOD 300
Construction Document (CD)
IDP –Implementation Documents Phase
Precise Geometry
Model Content Requirements
“Specific Assemblies that are Accurate in Terms of Size, Shape,
Location, Quantity, and Orientation.”
Authorized Uses
Construction and Shop Dwgs
Analysis – Systems Performance
Cost – Specific Quantity/Volume Estimates
Schedule – Specific Elements/Systems and Time
Optional – Other Authorized Uses
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AIA E202 LOD 300 – SE
Expand and Coordinated Modeling Effort
Continue/Severe Analysis Links?
Foundation Elements
Elevation Steps, Wall Penetrations, Rebar, Embeds, Chamfers, Reveals
Superstructure Elements
Connections (Base Plates, Framing, Gussets)
Web Penetrations, Shaft Openings
Pour Stops and Slab Edge Conditions
Key is “Specific”
Design size beams, columns, brace
Roof Framing slope
Brick Shelves
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AIA E202 LOD 400
Shop Drawings (CA)
IDP – Permit and Final Buyout
Fabrication
Model Content Requirements
“…Complete fabrication, assembly, and detailing information.”
Authorized Uses
Construction – Virtual Representation
Analysis – Systems Performance
Cost – Actual PO
Schedule – Means and Methods
Optional – Other Authorized Uses
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AIA E202 LOD 400 – SE
Modeling Effort Minimal
Additional Services
Structural Steel Detailing
Rebar
Formwork
Precast
Update LOD 300 Model
RFI & SK’s
Field Conditions
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AIA E202 LOD 500
As Built
Model Content Requirements
“…As Constructed…”
Authorized Uses
Facility Maintenance
Highly Dependent on Agreement
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AIA E202 Article 4 Model Elements
Model Element Reliance
Model Elements Table
Project Phase
LOD
MEA
Notes
Model Element per CSI UniFormat™
Other Model Elements
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AIA E202 LOD 100 Revit Example
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AIA E202 LOD 200 Revit Example
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AIA E202 LOD 300 Revit Example
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Autodesk BIM Deployment Plan -
Level of Detail Exhibit
Project roles/responsibilities
Software specifications
Project communications
Template files
Level of Detail Exhibit
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Autodesk BIM Deployment Plan -
Level of Detail Exhibit
CSI MasterFormat™
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Department of Veteran Affairs BIM Guide
BIM Vision
Project Requirement (>$10M)
Technical Requirements
References
BIM Object/Element Matrix
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VA BIM Object/Element Matrix
CSI UniFormat™
Created by AEC Infosystems, Inc.
E202 In-Depth Expansion
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VA BIM Object/Element Matrix
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VA BIM Object/Element Matrix
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Conclusion
3 Model Progression Resources
Terminology
Examples
Create your Firm’s Detail Level Standards
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