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.
Download ReportTranscript 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.
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 Building Information Modeling (BIM): The process of generating and managing building data during its life cycle. Typically it uses threedimensional, 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 Building Lifecycle Mgt. Building Information Modeling Objects Computer-Aided Drafting Layered Production Tracing Paper Manual Methods CAD Object-Oriented CAD Centralized, Integrated Databases Future Technologies Central Database vs Federated File Structure Database Federated Built 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. Built on a CAD based platform. Uses a federated file structure to develop a composite model to produce construction documents. • Sequential workflow between modeling and documentation • Fully parametric • Bi-directional • Central database file structure • Parallel workflow between modeling and documentation • Limited parametric • Not bi-directional • Federated file structure Federated Workflow 3D Optional Project Master Model 2D Extraction Files Geometry Files Struct Struct Arch Arch Mech Mech Project Model Discipline Master Models Struct Arch Sheet Drawing Files Mech Schedules and Tables Design Models Central Database Workflow USER 1 USER 2 CENTRAL MODEL USER 4 USER 3 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 Plan The Who, What, Where, When 1. Level of Detail (LOD) 2. Model Element Author (MEA) References -AIA Document E202 -PSU BIM Project Execution Planning Guide BIM in the Design Process David Rushforth, PE, LEED AP BD+C 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 Perimeter Study Particle Trace Air Velocity Profile Temperature 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 Construction CLASH DETECTION BIM in Construction CONSTRUCTION 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 Graphic Design Graphic Original Design Data Attribute Data Data Attribute Data Attribute Data A/E Contractor Owner/Operator SEPS COBie2 Maximo Space & Equipment Planning Automating a Complex, Data-rich Process Space & Equipment Planning System (SEPS) Equipment Database Space/Room Database Equipment Specification Database (for HFPA: Military Handbook 1691) Project Program Space List JSN (key field) Equipment List Room Guideplates and Equipment Lists Construction Operations Building Information Exchange – (COBie2) COBie Construction Operations Building Information Exchange Facilities Contact (or projects) Manuals Floors Types (equipment types) Documents (approved electron submittals) Warranties Parts Project Lifecycle Spaces Components Installation (named equipment) (Make, Model, Serial #) Zones Systems Design + Documentation Construction ….. etc Project Delivery BIM Modeling – Data Development COBie Worksheets 1 through 8 COBie Worksheets 9 through 16 Developing Data + BIM Components Project Data Spatial Data Building Components Facility Contact Floor Space Zone Type Component Space/Room Components 3D Components • COBie attributes assigned to spaces with Revit room schedule creation • Project team to determine the components to be tracked for COBie (not all! e.g. no mullions) Revit Component COBie Sheet Assigning COBie Data Fields To Model Components Project level data – not model components •Add Information to COBie spreadsheet • Manufacturers are developing objects (Autodesk SEEK) - still preliminary. Data attributes -TBD in future. COBie Data Structure - Spatial Assigning COBie Data Fields To Model Components Floor Space Zone •Name •Room 202 •RoomArea ID •Gross •Room •Name203 •Room •Space204 Type •Area Sprinkler Zone 3 Room 201 2nd Floor COBie Data Structure - Assets Assigning COBie Data Fields To Model Components System Component •VAV2-1 •Asset Tag/ID •DUCT2-12 •Serial Number •DUCT2-15 •Date Installed •DIFF435 Asset Type •Manufacturer •Model No. •Warranty Duration 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-202 http://www.aia.org/release_092408_condocs -Penn State University – Project Execution Planning Guide http://www.engr.psu.edu/ae/cic/BIMEx/download.aspx -National BIM Standard United States v1.0 http://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. Inc. [email protected] -David Rushforth, PE, Vandeweil Engineers [email protected] -John Sullivan [email protected]