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, Yañez, Ramos, Maguey, and Martínez

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Project Phase 1Project Phase 2Project Phase 3 S C

AIA E202 LOD 100 Revit Example

AIA E202 LOD 200 Revit Example

AIA E202 LOD 300 Revit Example

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

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

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

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

VA BIM Object/Element Matrix

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

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