Precast Concrete BIM Standards Meeting

Transcription

1 Precast Concrete BIM Standards Meeting bsa Conference, January 8, 2013 Chuck Eastman Shiva Aram Manu Venugopal Rafael Sacks Ivan Panushev

2 MVD For Precast Concrete Chair: Michael LaNier BERGER/ABAM Engineers Inc. A. Projects led by Precasters: 1. Jason Lien - chair Encon United 2. Jennifer Huber Encon United 3. Monty Overstreet FDG, Inc 4. Mike Sloter IPC Inc 5. Mark Kraft CEG Engineers A. Projects where Precaster is a subcontractor: 1. Michael Slobojan chair Structureworks 2. Mark Potter Finfrock Industries 3. Davis Chauviere HKS Inc 4. Charles Pool Tekla 5. Dieter Maucher Tindall Corporation 6. Jim Davis Stresscon A. Architectural Precast: 1. David Orndorff - chair Shockey Precast 2. John Wang Mid State Precast 3. Mike LaNier BERGER/ABAM Engineers Inc. 4. Aaron Fink Oldcastle Precast A. Fabrication through Erection: 1. Mike Putich - chair 2. Dan van Vieren Concrete Vision 3. Wayne Norris Metromont 4. AJ Scarfato Metromont 5. Earle Kennett NIBS 6. Wayne Kassian Kassian Dyck& Assoc 7. Karen Laptas Blue Ridge Design, Inc. Technical Advisory Team: Chuck Eastman Georgia Tech Rafael Sacks Technion, Israel Institute of Technology Ivan Panushev Georgia Tech Shiva Aram Georgia Tech Manu Venugopal Georgia Tech Consultants: Richard See Thomas Liebich Digital Alchemy AEC2

3 Precast Concrete BIM Standards Meeting Agenda: 1. Review of Precast Concrete Domain set of MVDs IDM development MVD definitions Test demonstrations Set up of Certification testing 2. Review of test demos 3. Weaknesses and a new approach 4. Demo of interactive MVD definition and implementation 5. Wrap-up

4 Precast Concrete NBIMS Process What is the National BIM Standard? We are following and validating the national BIM standard process, defined in: National BIM Standard Version 1 - Part 1: Overview, Principles, and Methodologies Draft: January 14, 2008 National Institute of Building Science BuildingSMART Federal Facility Council National Institute of Standards and Technology Available in:

5 Precast Concrete NBIMS Process Scope of Process Phases Program: What is the requirement? standard requirements definition process model of exchanges, Design: Construct: How to solve the requirements? standard design documents: functional specification of each exchange How to build it? verifiable implementation in software; development of model views for each exchange Deployment: Use in Industry verifiable BIM data exchange

6 Review IDM workflows in data Process Map: Architectural Precast Project Preliminary Project Description Design Development Construction Documentation Procurement Product Development Fabrication Erection Phase Architecture ( ) [1.1] Concept Design of Precast Facade [1.4] Design Development ~ [1.9] Design Intent Validation Exchange Arch. Concept Model A_EM.1 A_EM.2 Structural Concept Model A_EM.4 Contract Model Architectural Construction Model A_EM.5 [B2] Coordination Action Items Arch. Review Model A_EM.8 Engineering ( ) [1.2] Structural Concept [1.5] Engineering Requirements [1.10] Structural Design Review Exchange A_EM.3 Precast Concept Model A_EM.6 Design Load Model A_EM.7 Fabrication Model Coordination Action Items [B3] Building Product Manufacturing ( ) [1.3] Design review and Concept Modeling [1.6] Precast Bid Preparation ~ [1.8] Precast Detailing ~ + [2.0] Fabrication And Erection + Continued on the Fabrication and Erection process map Exchange A_EM.11 Arch/Str Contract Model Precast Bid Contract Model [B1] A_EM.9 A_EM.10 Coordination Model [B4] Coordination Action Items General Contracting ( ) [1.7] GC Bid Preparation Defined relevant workflows [1.11] Construction Coordination

7 IDM Exchange Specification Identify all precast information: Project; precast parts and components, structural, reinforcing, control data All exchanges identified in process models Identify relevant attributes Required? range of variation These specifications are called the IDM Requirements For each workflow, defined exchange requirements

8 IDM Exchange Specification Information Delivery Manual

9 Precast Concrete NBIMS Process Scope of Process Phases Program: What is the requirement? standard requirements definition process model of exchanges, Design: Construct: How to solve the requirements? standard design documents: functional specification of each exchange How to build it? verifiable implementation in software; development of model views for each exchange Deployment: Use in Industry verifiable BIM data exchange

10 Model View Definition (MVD) IFC Model View Definition Diagram : Precast Piece Type IFC2x4 VIEW ID VIEW NAME Generic APPLICATION NAME Generic APP. VERSION EXCHANGE TYPE Generic DIAGRAM STATUS Sample DIAGRAM VERSION DIAGRAM DATE 4/3/2009 DIAGRAM AUTHORS IFC2x4 Precast Piece Type PCI-080 Precast Piece Type Attributes VBL-170 GUID VBL-171 Name PCI-056 Precast General Attributes VBL-172 Description PCI-057 Precast Fabrication Attributes VBL-013 Owner and Status Information PCI-081 Piece Type Geometry Assignment PCI-066 Generic Brep Shape Geometry PCI-068 Extruded Geometry PCI-069 Arbitrary Precast Profile PCI-070 Arbitrary Precast Profile with Voids VBL-268 Generic Assignments PCI-060 Actor Assignment PCI-059 Approval Assignment Document owner: -- This document uses the official IFC Model View Definition Format version 1.1. of the IAI (

11 Model View Definition (MVD) Georgia Tech 11

12 Developed a Comprehensive Set of IFC Data Model Concepts for Precast Use Goal: define the Concepts needed to cover the domain of precast concrete design, engineering, fabrication, erection as defined by technical committee Include reference design information: For project and site, loads and performance requirements, for other system objects that precast interacts with (connects, pass-throughs, embeds, clashes with, etc) Extended IFC schema to support precast Model View Definitions Posted on IFC Solutions Factory

13 IFC Solutions Factory

14 Model View Implementation Tools

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16 IFC Concept Specification IDDS Workshop, April 2012 To facilitate and support implementation, IT Advisors provide test models for each MVD Concept. These are both specifications for a model to test export and Part-21 files to test import. Recent development of a test site, supporting automated testing, requires definition of the testing rules needed to certify an MVD. Business rules defined the allowed value of each field in the Concept

17 MVD Binding Documents

18 Precast Concrete NBIMS Process Scope of Process Phases Program: What is the requirement? standard requirements definition process model of exchanges, Design: Construct: How to solve the requirements? standard design documents: functional specification of each exchange How to build it? verifiable implementation in software; development of model views for each exchange Deployment: Use in Industry verifiable BIM data exchange

19 Identify IFC equivalent of requirements IDM Requirements 1 2 IFC information model Native information model Model View Definition (MVD) 1. Identify the IFC entities that represent the IDM requirements 2. For each application, find the native data entities that correspond to the IDM requirements and IFC entities 3. Implement mappings in one or both directions

20 Verifiable Implementation Provide implementation level test cases Example pieces and definition requirements, to test if exported correctly Example IFC part models that can be imported into a BIM tool for a target use

21 Verifiable Implementation Example pieces and definition requirements, to test if exported correctly Sandwich panel wall with cross-ties Hollowcore slab with topping

22 Verifiable Implementation Example pieces and definition requirements, to test if exported correctly Test files Hollowcore slab with topping

23 Precast Concrete BIM Standards Meeting Workflow Across Multiple Applications for 2011 PCI Convention NOTE: Fully editable models cannot be transferred from one editing application to another; the rules and logic are unique.

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30 Precast Advanced Garage Model Workflow Across Multiple Applications for 2012 PCI Convention 30

31 Precast Advanced Garage Model Currently Active Companies: Tekla Vectorworks Autodesk Revit ArchiCad Nemetschek Scia Nametschek Allplan Vico Solibri IFC Viewer Nemetschek IFC Viewer

32 Precast Advanced Garage Model 32

33 Relevant Features Precast Specific Doubletee and Hollowcore Precast Columns Spandrels Sandwich Wall Panels Discrete Accessories, Precast Stair and Ramp Slab Topping, External Finishes Camber and Batter on beams General Reinforcing Details Foundation Material & precast Properties September 28,

34 Representation Capabilities Systems (slabs, stairs, raker beams, P-cells, tube what else?) camber and twist parameters; precast piece properties connection shape modifications to precast pieces, also blockouts external -, Internal connections reveals and other features metadata and status information, tracking GUIDs material and mix properties structural analysis model and its relations to physical pieces Embeds, lifting hardware and joints reinforcing and tendons and their properties architectural pieces with finishes, surface profiles external library references (those in gray not completed) joint information

35 Precast Concrete BIM Standard Progress Report Status Summary 1, PCI Exchange Standards are complete (almost) 2. Currently working with software companies on their implementation of translators 3. Developing increasingly more complex test cases 4. Had simple 3 hour demo at PCI Convention Salt lake City (October, 2011) 5. Had complex 4 hour demo at PCI Convention Nashville (September, 2012) 6. Now focusing on the tests used for certification of software 7. Expect to be done in May timeframe, 2013 September 28, 2012

36 MVD Binding Documents: Assessment IDDS Workshop, April 2012 Status of Model View BIM Standards: Concepts defined in Ad Hoc manner - too low level; many can be combined for testing without eliminating flexibility MVD too time consuming to develop mos. Multiple man years Very rigid: satisfactory for contractual pass-offs, poor for collaboration Very much a black-box, not easily understood by casual users What is the next step in Model Exchange? Testing is onerous; SW companies will be reluctant to support many MVDs

37 New form of Concept: Semantic Exchange Module (SEM) SEM is Concept extended to include both IFC and native bindings; a logical structure above IFC that eliminates plumbing connection details ; can be implemented to support dynamic composition by users, to define new MVDs for collaborative needs. IDDS Workshop, April 2012 IDM Requirements Native Model Binding Semantic Exchange Module IFC Binding IFC information model Native information model Export & import mappings If SEMS can be combined and automatically compiled, then the mapping from IDM to MVD can be done interactively, in afternoon. If SEMS can be tested and certified, then the total effort by SW companies is greatly reduced, because a SEM module need only be implemented & tested once

38 Semantic Exchange Module (SEM) IDDS Workshop, April 2012 Translator implementation as the construction of a set of information modules single definition, single testing, repeated use of translation modules Implementation modules that can be composed into varied model view translators MVD MVD Need rigorous specification standard of Concept; Implemented Semantic Phrase Book of Packaged Implementations 800+ IFC entities, plus appx. 800 properties, relations SEMs apply to IFC native bindings and are implemented once Variable number of SEMs implemented and tested by each SW company SEMS can be composed into MVDs by knowledgeable users Concepts are tested once and validated, not requiring internal testing again

39 Semantic Exchange Module (SEM) IDDS Workshop, April 2012 Sequential Implementation of SEM Families Gridlines Grid Definition Grid Placement Spatial Containment Hierarchy: Project Site Building Story Space Primary Building Element Type BeamType BuildingElement ProxyType ColumnType CurtainwallType MemberType PileType (4) RampType (4) RoofType (4) SlabType StairType (4) WallType Primary Building Element Beam BuildingElement Proxy Column Curtainwall Member Pile Ramp Roof Slab Stair Wall Propertysets Object properties Material properties Performance properties Geometry Link ElementType Geometry Element Individual Geometry SolidModel Geometry SolidManifold Brep ExtrudedArea Solid RevolvedArea Solid SurfaceSwept AreaSolid SweptDisk Solid CSG Profile Definition Arbitrary Profiles Parameterized Profiles Composite Profiles Derived Profiles A Model View is a directed sequence of Elements that incrementally map to the existing structure Can be saved and modified

40 Precast Concrete BIM Standards Meeting Demo September 28, 2012