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

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 100 LOD 200 LOD 300 LOD 400 LOD 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

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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

VA BIM Object/Element Matrix

Conclusion

3 Model Progression Resources

Terminology

Examples

Create your Firm’s Detail Level Standards

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