OGC Copyright 2008, Open Geospatial Consortium Making Location Count Building Performance and Energy Analysis (BPEA) Thread 1.Definition of Early Design 2.Technical Overview 3.Demonstration Test Model 4.IDM 5.MVD 6.2 nd Level Space Boundaries 7.External Shading Elements 8.Progress Update Presentation Outline

OGC Copyright 2008, Open Geospatial Consortium Making Location Count How do we define early design? The following are frequently encountered early project design phase sequences: Feasibility-Programming-Schematic Design (SD)-Design Development (DD)-Construction Documents (CD) (Stanford Project Delivery Process) Pre-Design, Conceptual Design (CD), SD, DD, CD (Green Studio Handbook) Pre-Design, SD, DD, CD (AIA IPD Traditional Practice) Feasibility, CD (Preliminary Concepts and Final Concepts), DD, CD (GSA Project Delivery Process) The context of this Testbed is not to define generic or standard project phase terms, or try to standardize what’s typically in the scope of that phase, but rather define what we want to achieve with the analysis and when, and the nature of and types of information that are required to support that analysis at that time in the project delivery process.

OGC Copyright 2008, Open Geospatial Consortium Making Location Count How do we define early design? (cont’d) Stated another way, our goal is to:  Acknowledge and account for the types of information that design teams will typically require and have available during early design in current practice  Account for the level of detail of that information  Identify and include the types and level of detail of information that design teams should be considering to support early design performance analyses and could have available to them with BIM-enabled technology In a sense, we are tasked with “redefining” what a design team could and should do during early design to generate the quality of information needed to make informed, intelligent decisions about how to meet their project performance goals. Integrated Project Delivery: A Guide, AIA 2007

OGC Copyright 2008, Open Geospatial Consortium Making Location Count BIM-Authoring Tool BIM 1 BIM 2 BIM N Data Transformation Assumptions/Data Transformation Rules IFC File Simplified BPEA Technical Overview Analysis Tool EnergyPlus Tool 2 Tool N MVD with 2 nd level SB Input File Results GST IDF Generator IDF Editor

OGC Copyright 2008, Open Geospatial Consortium Making Location Count Demonstration Test Model  Simplified GSA 1800F building  4 floors  4 story atrium  South facing overhangs  Virtual space boundaries  Multiple constructions

OGC Copyright 2008, Open Geospatial Consortium Making Location Count BPEA Information Delivery Manual (IDM)- Background and Overview Background Starting point: buildingSMART Norway and GSA IDM 5 months of participant and public review Alignment with QTO IDM Overview Process Model Specification of process Specification of data objects Specification of decision point gateways Exchange Requirements for Energy Simulation Input Exchange Requirements for Energy Simulation Output

OGC Copyright 2008, Open Geospatial Consortium Making Location Count BPEA IDM- Process Model Sub-process

OGC Copyright 2008, Open Geospatial Consortium Making Location Count BPEA IDM- Process Model (cont’d) Sub-process

OGC Copyright 2008, Open Geospatial Consortium Making Location Count BPEA IDM- Exchange Requirement Tables

OGC Copyright 2008, Open Geospatial Consortium Making Location Count Window Construction Source: Window 6/International Glazing Database Opaque Construction Source: ASHRAE Fundamentals Tables 17, 18, 19 Industry Data Sources for Construction/Space Types Sources of Space data: ASHRAE 90.1, ASHRAE 62.1, Title 24 Space classifications: GSA Star Space Type, Omniclass Table 13, IBC, IECC

OGC Copyright 2008, Open Geospatial Consortium Making Location Count Coordinated development with GSA MVD for BIM Guide 05 (Energy) Alignment with QTO MVD BPEA Model View Definition (MVD)-Generic

OGC Copyright 2008, Open Geospatial Consortium Making Location Count BPEA Model View Definition (MVD)-Binding

OGC Copyright 2008, Open Geospatial Consortium Making Location Count 2 nd Level Space Boundaries One of the most critical components to the BPEA Thread work is the specification, documentation, and implementation of 2 nd level space boundaries, which define the “thermal view” of the building rather than the “architectural view” (i.e. heat transfer surfaces). © 2008, Open Geospatial Consortium, Inc. 13

OGC Copyright 2008, Open Geospatial Consortium Making Location Count Copyright © Vladimir Bazjanac/LBNL 2007 zone 1 zone 2zone 3 zone 4 Four zones share a wall In CAD/BIM the shared wall is a single long wall Each zone “sees” a separate, shorter wall To model thermal interaction between zones, shared walls in zones 2 and 3 consist of two segments Bazjanac, 2008 An Example with Walls…

OGC Copyright 2008, Open Geospatial Consortium Making Location Count Copyright © Vladimir Bazjanac/LBNL 2007 An Example with Slabs… Walls below slab (slab as ceiling) Walls above slab (slab as floor) Many different heat transfer surfaces must be defined… slab Bazjanac, 2008

OGC Copyright 2008, Open Geospatial Consortium Making Location Count External Building Shading Elements Bazjanac, 2008

OGC Copyright 2008, Open Geospatial Consortium Making Location Count External Building Shading Elements (cont’d) Bazjanac, 2008

OGC Copyright 2008, Open Geospatial Consortium Making Location Count BPEA Thread Progress Update Tasks completed: 1.BPEA IDM 2.General BPEA MVD and IFC bindings 3.Demo test model Tasks in progress: 1.Demo model testing protocols and implementation (NIST) 2.2 nd level space boundaries (LBNL, Granlund, Digital Alchemy, AEC3) 3.Space mapping (OGC/Stanford) 4.External building shade implementation strategy (LBNL)