Image courtesy of Hobart, Yañez, Ramos, Maguey, and Martínez Structural Level of Detail in Revit®: When to Draw the Line and Where to Model It! Will IKERD Director IPD Department, RLG English Version Brenda Herrera Ikerd Consultant, i2concepts a subsidiary of Ikerd Consulting, LLC English and Spanish Version

Spanish Version (Versión en Español) A recording of this Session and its papers are also available in Spanish. Please visit AU.autodesk.com, session SE333-1 for the Spanish Content. Esta sesión está disponible en español. Por favor, visite AU.autodesk.com para ver los documentos de esta sesión.

What to Expect: STRUCTURAL LOD Who What When Where Why How

Is this important to my job / my business? STRONGLY AGREE if Architect Structural Engineer Mechanical Engineer Contractor Sub-contractor Owner Legal

DIALOG

Will’s Background Director of IPD Department at RLG, Inc. Licensed Practicing Professional Engineer (TX) Masters in Structural Engineer Washington Univesity in St. Louis Focus in parametric modeling of structure (‘96-98). Areas of interest are Structures Envelope BIM & VDC Director of IPD Department at RLG, Inc.

Will’s Background Co-Chair Designers sub-forum Co-Chair SEI – CASE Joint Committee on BIM Committee member Technology Integration Committee American Concrete Institute ACI Committee 131 BIM Glass Association of North America BIM Task Force

Brenda's Background Founded Ikerd Consulting LLC and its subsidiary i2concepts beginning in 2003. Started working with Revit Structure V2 (‘05) Co-Authored Autodesk's 2011 Structural Educational Curriculum Co-authoring book on Virtual Design and Construction (VDC) with Navisworks in both Spanish and English.

Major Take Away “Everything should be made as simple as possible, but not one bit simpler. ” Albert Einstein

TYPES OF BIM MODELS CLASH DETECTION VALUE ENGINEERING DIM. CONTROL DOCUMENTATION FABRICATION FIELD BIM

Inventor SolidWorks ProE Custom Programming In VB & VB.net LOD & FEDERATED MODEL Revit MEP & Bentley Mechanical Bentley Architecture Revit Architecture Revit Structure Bentley Structural 3D Civil Inventor SolidWorks ProE

LOD Should Clearly Defined the X,Y,Z origin LOD and Origin LOD Should Clearly Defined the X,Y,Z origin

Ikerd’s Ideas for Structural Design LOD Avoid re-modeling Clearly Define the local X,Y,Z Origin Model Content Shown on Typical 1/8" Plan Model Structure as it will be Constructed Do Not Duplicate Model Content (A,S & M) Use Shared Model for 2 Discipline content

Ikerd’s Ideas for Structural Design LOD Don't Assume Construction Methods Match BIM material w/ specifications Engineers Open & Review their BIM Not All Steel, Concrete is Structural Train inside & out on Structural BIM LOD

AIA E202 BIM Protocol Exhibit

AIA E202™–2008 LOD 350? Fully coordinated federated model? 100: Many items modeled. Masses & sq.ft. 200: Geometry is established but no object data 300: Engineered sizes of objects are established 350? Fully coordinated federated model? 400: Shop drawing & committed purchase price 500: As Built Model, complete.

Why Define a Structural BIM LOD of 350 There’s many a slip between the cup and the lip

AIA E202™–2008 LOD Table

AIA E202™–2008 LOD Table CSI UniFormat for structures

Why use the CSI MasterFormat 2010 for Structural STRUCTURAL TOPICS 03 CONCRETE 04 MASONRY 05 METALS (STEEL) 06 WOOD 31 EARTHWORK 32 EXTERIOR IMPROVEMENTS

Structural LOD Levels LOD LOD CONCEPT PHASE TRADITIONS PHASE (TYP.) 100 Conceptualization Schematic Design 200 Criteria design Design Development 300 Detailed Design Construction Documentation 350 Beyond Detail Design Pre-Construction 400 Fabrication Detail Construction Administration 500 Facility Management Hand Over

STRUCTURAL LEVEL OF DETAIL (LOD) MODEL 100 200 300 350 400 500

Structural LOD Model, Overview

Structural LOD Model, Overview

CONCRETE CAST-IN-PLACE LOD 300 LOD 100 LOD 200

Structural LOD Table

Structural LOD w/ CSI MasterFormat XX YY ZZ.## XX – DIVISION YY & ZZ – SUB DEV .## User Defined

Structural LOD 100 STR. NARRATIVE + ARCH. LOD 100 = STR. LOD 100

Structural LOD 100 with Narrative Content Sample Text in Narrative: One Story Building Anticipated Structure will be: 7-1/4" tilt wall Wall height ~ 22 feet tall Columns ~ HSS 8x8x1/4. Top Of Steel at 17’ Five foot parapet. 5 ½” Slab On Grade 4’ moisture improved sub-grade 0,0 BIM Origin at S-W panel face Finish Floor at 100’ ARCH. BIM LOD 100 STR. LOD 100

Structural LOD 100 with Model & Narrative

Structural LOD 200: Basement Wall Example

Structural LOD 300: Basement Wall Example

TILT WALL EXAMPLE & ELEMENTS WALL ELEMENTS PIER LOCATIONS TOP OF WALL & OPENINGS BASE OF WALL WALL THICKNESS JOINTS ARE INDICATED ON PLAN (2D LINES) WALL JOINTS ARE MODELED JOIST CONNECTIONS BARRING & EDGE ANGLE & EMBEDS PANEL ROUGH OPENINGS ERECTION BRACES

TILT WALL LOD Example

300 LOD STRUCTURAL BIM

300 LOD STRUCTURAL BIM with LINKED SHARED 300 LOD TILT WALL BIM

300 LOD SHARED TILT WALL BIM

300 LOD ARCHITECTURAL BIM

300 LOD ARCHITECTURAL BIM

300 LOD ARCHITECTURAL BIM w/ 300 LOD SHARED TILT-WALL MODEL

300 LOD ARCHITECTURAL BIM

300 LOD STRUCTURAL BIM

STRUCTURAL LOD 300: 2D Typical Details STRUCTURAL LOD 350+: 3D modeled Content

STRUCTURAL LOD 300: 2D Typical Details STRUCTURAL LOD 350+: 3D modeled Content

300 LOD STRUCTURAL BIM Plan View

350 LOD Example “Panel Book” BIM

Structural Concrete LOD

350 LOD RFI’S CONCRETE CAST-IN-PLACE LOD 350 and 400

STRUCTURAL LOD 300: 2D Typical Details STRUCTURAL LOD 350+: 3D modeled Content

350 LOD EXAMPLE: “BIM” TYP. DETAIL

350 LOD EXAMPLE: “BIM” TYP. DETAIL?

STRUCTURAL LOD 300: 2D Typical Details STRUCTURAL LOD 350+: 3D modeled Content

STRUCTURAL LOD 300: 2D Typical Details STRUCTURAL LOD 350+: 3D modeled Content

350 Architecturally Modeled Masonry Steel Content WHEN MODELED, THESE SHOULD BE CREATED IN THE ARCHITECT MODEL SIZES COORDINATED WITH THE STRUCTURAL ENGINEER WITH SCHEDULE SHOWN IN THEIR DOCUMENTS.

350 Architecturally Modeled Stair Steel Content WHEN MODELED, THESE SHOULD BE CREATED IN THE ARCHITECT MODEL

350 Architecturally Modeled Steel for Folding Partitions

STRUCTURAL LOD 300: 2D Typical Details LOD 350+: 3D modeled Content

Steel Joist and Deck Example BRIDGING EXTENSIONS STEEL HEADERS

PRECISION? vs. ACCURACY? LOD 300 GENERIC BIM MODEL MANUFACTURES 2D MODEL LOD 350 CUSTOM MODEL

PRECISION? vs. ACCURACY?

LOD 300: BRIDGING MODELED? W/ 2D Details LOD 350+: 3D modeled Content Bridging should be modeled at LOD 300 Connections are modeled at 350+

Open Web Steel Joist Framing System Definition Sloping members Connection Seats & Embeds Bridging, Headers & Braces Top & Bottom Chord Extensions

Buckling Restrained Braces: Star Seismic Example LOD 200 http://www.starseismic.net/products.html Ikerd Structural LOD Model LOD 300 LOD 350 Ikerd Structural LOD Model LOD 400 Ikerd Structural LOD Model http://www.starseismic.net

350 LOD Grade Beam Content

300 LOD Foundation

RETAINING WALL EXAMPLE LOD 300 LOD 350

Other Disciplines Must Have Comparable LOD ! ARCHITECTURAL CIVIL MECHANICAL ELECTRICAL PLUMBING FIRE

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