1. 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

2. Session Objectives
 Detail level terminology, model scope, and complexities
 Model Progression Documents
 Identify and communicate BIM deliverables
 Revit Detail Level Examples

3. 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

4. Revit …. Kids!!!
 Change everything – Revit process is change
 Distractions – Analysis…Updates…Borrowing Elements
 Time Management

5. AIA E202 Overview
 General Provisions
 Protocol
 Level of Development
 Model Elements
 Model Element Table

6. AIA E202 Article 1 General Provisions
 Level of Development (LOD)
 AKA Level of Detail, Detail Levels
 Model Elements
 Model Element Author
 Model User

7. AIA E202 Article 2 Protocol
 Coordination and Conflicts
 Model Ownership
 Model Management

8. AIA E202 Article 3 Level of Development
LOD 100 LOD 200 LOD 300 LOD 400 LOD 500
Model Element Table

9. 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

10. 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

11. 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

12. 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

13. 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

14. 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

15. 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

16. 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

17. AIA E202 LOD 500
 As Built
 Model Content Requirements
 “…As Constructed…”
 Authorized Uses
 Facility Maintenance
 Highly Dependent on Agreement

18. 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

19. ProjectPhase1
ProjectPhase2
ProjectPhase3
S200 1.1
400 C

20. AIA E202 LOD 100 Revit Example

21. AIA E202 LOD 200 Revit Example

22. AIA E202 LOD 300 Revit Example

23. Autodesk BIM Deployment Plan -
Level of Detail Exhibit
 Project roles/responsibilities
 Software specifications
 Project communications
 Template files
 Level of Detail Exhibit

24. Autodesk BIM Deployment Plan -
Level of Detail Exhibit
 CSI MasterFormat™

25. Department of Veteran Affairs BIM Guide
 BIM Vision
 Project Requirement (>$10M)
 Technical Requirements
 References
 BIM Object/Element Matrix

26. VA BIM Object/Element Matrix
 CSI UniFormat™
 Created by AEC Infosystems, Inc.
 E202 In-Depth Expansion

27. VA BIM Object/Element Matrix

28. VA BIM Object/Element Matrix

29. Conclusion
 3 Model Progression Resources
 Terminology
 Examples
 Create your Firm’s Detail Level Standards

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their respective holders. Autodesk reserves the right to alter product and services offerings, and specifications and pricing at any time without notice, and is not responsible for typographical or graphical errors that may
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