BIM – UNDERSTANDING THE PROCESS The State-of-the-Art Tool in Design and Construction
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BIM – UNDERSTANDING THE PROCESS The State-of-the-Art Tool in Design and Construction SPONSORED BY SAME, DC POST IN ASSOCIATION WITH ACEC M/W
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BIM – UNDERSTANDING THE PROCESS The State-of-the-Art Tool in Design and Construction. SPONSORED BY SAME, DC POST IN ASSOCIATION WITH ACEC M/W. “Insanity: doing the same thing over and over again and expecting different results. -Albert Einstein. Definition of BIM. - PowerPoint PPT Presentation
Transcript of BIM – UNDERSTANDING THE PROCESS The State-of-the-Art Tool in Design and Construction
BIM – UNDERSTANDING THE PROCESSThe State-of-the-Art Tool in Design and Construction
SPONSORED BY SAME, DC POST IN ASSOCIATION WITH ACEC M/W
“Insanity: doing the same thing over and over again and expecting different results.
-Albert Einstein
Definition of BIM
Building Information Modeling (BIM): The process of generating and managing building data during its life cycle. Typically it uses three-dimensional, real-time, dynamic building modeling software to increase productivity in building design and construction. The process produces the Building Information Model, which encompasses building geometry, spatial relationships, geographic information, and quantities and properties of building components.
History of Methods of Production
70s 80s 90s 00 10
Tracing Paper
Layered Production
Computer-Aided Drafting
Building Information Modeling
Building Lifecycle Mgt.
Manual Methods CAD Object-Oriented CAD Centralized, Integrated Databases
FutureTechnologies
Objects
Central Database vs Federated File Structure
Database FederatedBuilt on a database platform that allows the creation of parametric and information-rich objects. Parametric modeling dependencies are automatically updated whenever changes are made and are bi-directional.
• Sequential workflow between modeling and documentation
• Fully parametric• Bi-directional• Central database file structure
Built on a CAD based platform. Uses a federated file structure to develop a composite model to produce construction documents.
• Parallel workflow between modeling and documentation
• Limited parametric• Not bi-directional• Federated file structure
Federated Workflow
Project Model
Design Models
Optional Project Master Model
MechStruct Arch
Extraction Files
GeometryFiles
Sheet Drawing Files
Discipline Master Models
3D 2D
Struct
Arch
Mech
Struct
Arch
Mech
Schedules and Tables
Central Database Workflow
USER 1 USER 2
USER 4 USER 3
CENTRAL MODEL
Central Database Workflow
What is the Model Intent?
1.Visualization• Perspectives, Renderings
2.Production• Schedules, Drawings
3.Interference Detection• 3D Clash Detection, 3D coordination with sub-consultants
4.Analysis• Structural, Thermal, Code Compliance
5.End User• Facilities Management, GIS
6.Supply Chain Integration• 4D, 5D Simulation, CNC Fabrication
BIM Execution PlanThe Who, What, Where, When
1.Level of Detail (LOD)
2.Model Element Author (MEA)
References
-AIA Document E202
-PSU BIM Project Execution Planning Guide
David Rushforth, PE, LEED AP BD+C
BIM in the Design Process
BIM in the Design Process
BIM Process Workflow
Modelers vs. Drafters Designing in the Model Modeling effort over the life of the project
– Increased modeling time up front compared to CAD» DD phase drawings may be “lighter”
– Front end coordination» 3D coordination» Conflict resolutions
BIM in the Design Process
BIM Process Parametric documentation
Each element has parameters Can organize/query parameters in schedules
Previous methods– Symbols and information stored separately– Information duplicated each time it is used
Parameterized– Symbols, 3D geometry, and information stored together– Can locate 3D geometry by searching information and vice
versa– Information stored once can be referenced many times
BIM in the Design Process
Benefits to the Design Parameters contained within model
Data in one location reduces discrepancies on drawings Calculated loads and schedules are automatically
updated to reflect changes on plans and vice versa– Panel schedules– Device counts– Equipment schedules
BIM in the Design Process
Benefits to the Design Visualization enabling design
Verify vertical clearances and mounting heights Determine floor box depths Verify design of systems in 3D
BIM in the Design Process
Coordination of Trades 3D coordination is enabled
Design around other elements in the model Can turn on/off various trades as needed during design
Design information is shared Same model elements used by all trades Can implement automatic notifications of changes
BIM in the Design Process
Coordination of Trades Coordination tools
Walk/fly through Shared Schedules Custom applications Clash detection
BIM in the Design Process
Design Analysis and Verification Visualization on plans
Lighting photometric calculations Loads (W/sf) Fire ratings of walls
Run calculations and verifications using the model’s database Automate system diagrams and calculations
BIM in the Design Process
Design Analysis and Verification Shared model for energy and solar analysis
Analyzing the Model
Design Analysis and Verification: Shared model for photometric analysis
BIM in the Design Process
Design Analysis and Verification Future shared model for computational fluid
dynamics (CFD) analysis
Temperature ProfilePerimeter Study - Particle Trace
Air Velocity Profile
BIM in the Design Process
Documentation Final product
Construction drawings Model
Parametric benefits Global changes
– Can adjust project standards (element symbols, line weights, text heights, general sheet notes, keynotes, revision names/numbers, etc. )
– Vs. per sheet as with CAD projects Issued/revision history Sheet lists
BIM in the Design Process
Drawbacks and Limitations Linked models (coordination and data sharing
limitations) Software and network limitations Complex software requires training Evolving technology More coordination time in the design phase is
expected and required by clients GIGO (Garbage in, garbage out) applies
BIM in ConstructionCLASH DETECTION
BIM in ConstructionCONSTRUCTION SEQUENCING
BIM and Operations
• Data Strategy • Begin with the end in mind
• Life Cycle Data Mix
• BIM for Bulk Data Processing • SEPS• COBIE • Maximo
• Slim BIM for Synchronous Info
Graphic / Attribute Mix
Graphic Design
AttributeData
Contractor
Graphic Original Design
AttributeData
A/E
Data Data
Owner/Operator
Graphic Design
AttributeData
SEPS COBie2 Maximo
Space & Equipment Planning
Space & Equipment Planning System
Space/Room Database
Space List
Equipment List
(SEPS)Equipment Specification Database (for HFPA: Military Handbook 1691)
Room Guideplates and Equipment Lists
Project Program
Automating a Complex, Data-rich Process
Equipment Database
JSN (key field)
Construction Operations Building Information Exchange – (COBie2)
COBieConstruction Operations Building Information Exchange
Facilities(or projects)
Floors
Systems
Types(equipment types)
Components(named equipment)
Documents(approved electron
submittals)
Installation(Make, Model, Serial #)
Manuals
Warranties
Parts
Contact
COBie Worksheets 1 through 8
BIM Modeling – Data Development
COBie Worksheets 9 through 16
Project Lifecycle
Design + Documentation Construction Project Delivery
….. etcSpaces
Zones
Developing Data + BIM ComponentsAssigning COBie Data Fields To Model Components
Project Data
FacilityContact
• Add Information to COBie spreadsheet
Project level data – not model components
CO
Bie
Sh
eet Floor
SpaceZone
Spatial Data
Space/Room Components
• COBie attributes assigned to spaces with Revit room schedule creation
TypeComponent
Building Components
3D Components
• Project team to determine the components to be tracked for COBie (not all! e.g. no mullions)
• Manufacturers are developing objects (Autodesk SEEK) - still preliminary. Data attributes -TBD in future.
Rev
it C
ompo
nent
2nd FloorFloor
• Name• Gross Area
COBie Data Structure - Spatial
Room 201
Space
• Room ID• Name• Space Type• Area
Sprinkler Zone 3
Zone• Room 202• Room 203• Room 204
Assigning COBie Data Fields To Model Components
COBie Data Structure - AssetsAssigning COBie Data Fields To Model Components
Asset Type
Component• Asset
Tag/ID• Serial
Number• Date
Installed
• Manufacturer• Model No.• Warranty Duration
System• VAV2-1• DUCT2-12• DUCT2-15• DIFF435
Asset Creation
Asset Visualization
Asset Reconciliation
Building O&M Workflows
BIM for Operations
• Data Strategy • Begin with the end in mind
• Life Cycle Data Mix
• BIM for “Batch” Data Processing • SEPS• COBIE • Maximo
• Slim BIM for Synchronous Info
THANK YOU
QUESTIONS ???
RESOURCE LINKS
- American Institute of Architects – Document E-202http://www.aia.org/release_092408_condocs
- Penn State University – Project Execution Planning Guidehttp://www.engr.psu.edu/ae/cic/BIMEx/download.aspx
- National BIM Standard United States v1.0http://www.wbdg.org/bim/nbims.php
- Construction Operations Building Information Exchange (COBiE)
http://www.wbdg.org/resources/cobie.php
CONTACT
- Brian Ward, AIA, Michael Baker Jr. [email protected]
- David Rushforth, PE, Vandeweil [email protected]
- John [email protected]
