GSA Automation of Court Design Guide

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6 GSA Automation of Early Concept Design Chuck Eastman, Yeon-Suk Jeong, Jae min Lee, Jin Kook Lee, Sherif Abdelmohsen, Hugo Sheward, Paola Sanguinetti GEORGIA TECH

7 Early Concept Design Review - Project Purpose Late concept design review identifies some errors that are systemic and cannot be easily corrected after the concept has been selected. Could you carry out Circulation assessment at early Concept Deign, so it would inform us in the selection of a concept?

8 Integrated Review in Early Concept Design for US Courts Preliminary Spatial Validation 8.14 Verify BIM Measurements Circulation/ Security Check 8.21 Verify BIM Measurements 8.8 Create Three or More Preliminary Concepts 8.13 Refine Three Concepts 8.20 Develop Best Concepts Preliminary Concept Design is a crucial early step for GSA project review Final Concept Design is the last step for project review before DD

9 Early Concept Design Review - Project Purpose The PBS-100 Guide lays out the process clearly. An Early Design Concept begins with a simpler set of given requirements: -a space program of the occupancy, number and type of occupant spaces -the site and general site plan -major circulation and building zoning -a budget or expected cost figure -major fire code considerations -exterior zoning -and recently, preliminary energy analysis

10 Context - Concept Design Energy Review provide automated feedback on early stage concept designs for energy implications, catching energy issues early, speeding and standardizing GSA reviews

11 System Architecture Spatial Validation Circulation/Security Energy Analysis Cost Estimation Pre-checker Pre-checker Pre-checker Pre-checker Spatial Validation Circulation/Security Energy Analysis Cost Estimation Checking Checking Interactive Review Report Interactive Review Report Interactive Review Report Interactive Review Report Extensible to other checking capabilities

12 Jefferson City PCD Model Concept 8-A

13 Toledo OH PCD Model United States Courts Toledo, Ohio Concept Design Model Development & Automated Review Process Lateral Design Development 2 Court 3 Court 4 Court 4 Court 6 Court Vertical Design Development May 2008 Aug 2008 Nov June, 2008 Early CD Review 1 Departments only Oct, 2008 Early CD Review 2 Mixed Mode Dec Early CD Review 3 Mixed Mode Updated 6Court Late CD Review Final Concept: Detailed spaces with departments, doors

14 GSA BIM Guide for Early Concept Design Review

15 GSA BIM Guide for Early Concept Design Review Building defined as a set of floor slabs, at the appropriate height/spacing (above and below grade External walls, with thickness, percent glazing All slab covered by space objects, with department space name (and base space name if defined) Elevators/stair spaces defined by space names One wall object covers one level One wall object covers three levels

16 16 GSA Review Example 07/26/07 - manual calculation

17 Automated Early Space Program Review

18 Automated Early Space Program Review

19 An Example: Actual Department Names in the Model This should be Building Support Facilities department. This could be handled by the fact that its space name mechanical room is always under the Building Support Facilities. But most cases require correct Department-Space name set. Well-named Department example. Computer recognizes it. Insufficient Meaning. For which Judge s Chamber? (Magistrate / District / Senior District / Bankruptcy Judge) Blank Name Standard Name defined in the Design Guide is USMS. But U.S. Marshal is also a correct name. Synonym DB needs to handle this. Misspelled Name Secured is non-standard name, but it is recognizable by our name mapping algorithm using secure key word mapping.

20 Space Naming for GSA and U.S. Courts Preliminary thru Final Spatial Validation Cost Estimation Space Classes Space Names Departments and Base spaces Circulation Space Classes Energy Internal Load Classes Department Names Base Space Names Application-based Space Names

21 Our BIM Program embedded these circulation rules into BIM-analysis software Court design guide U.S. Courts Design guides Selected circulation issues Define standard syntax and structure for rule families and procedures Normalized circulation issues Show where design fails IFC Court house Data Testing a court house model on Rule Checking SW Reference back to Design Guide description Generate rule set Rule Sets

22 Automatic circulation rule checking Circulation rule checking by using start, target and transit space conditions Circulation rule checking based on graph representation of space (paths shown in green)

23 3D circulation rules are implemented as a route graph that defines all paths within the building going through space that can be used for through circulation Conditions regarding the distances traversed, the types and security of spaces in the traversal path, and other conditions can be used to define allowable and illegal circulation paths. On a 6- story courthouse, approximately 27,000 routes were tested using 312 circulation rules in approximately 15 seconds.

24 Understanding an occupant s path traversals User-based occupant rules on path traversals ensure that a path between a judge s chamber and attorney s office can be made within restricted spaces (Figure 1). These rules also check multi-floor paths (Figure 2). Figure 1 Figure 2

25 Preliminary Design Energy Analysis In selecting a concept many energy-impacting decisions are being made, even though many have not been made and there is uncertainty in final energy costs. The purpose of energy analysis at this state is to understand the relative energy costs of each alternative and the energy impacts of the design features Major decisions and feedback available form this stage: building massing: number of storeys, footprint Orientation, self-shading, impact of applied shading Areas where building envelope receive major gains Impacts of courtyards and atriums

26 Preliminary Design Energy Analysis Input values from IFC Building geometry Construction types (associated to wall thickness) Heat gains by occupant density (associated to space name) Input values from Solibri Interface Location (City & State) Building North Orientation (0 = North up in plan) % fenestration pre façade External wall class Default values Solar Distribution Idealized HVAC system

27 MODELING /DEBUGGING EFFORTS Thermal zone generation Aggregate spaces by occupancy type Create perimeter zone (15 perimeter) Assign internal heat gains (revised to match new P 100) Zone surface subdivision Departmental spaces Secondary space boundary definition Thermal model with aggregated spaces by occupancy types, with added perimeter zones, and subdivision of zone surfaces Open to below condition (atrium) Internal walls (level of detail) zone inside a zone Next: surface overhangs + = Level 1: Level 2 Horizontal surface subdivision

28 ENERGY INTERFACE DEVELOPMENT Automated generation of thermal model Open IFC file Build: generate/visualize thermal zone Simulate: save IDF & call Energy Plus Aggregate results: view output report build Option to edit input values Revise building orientation Modify envelope construction type Change % window Add external shading simulate results

29 REPORTING FUNCTIONALITY Monthly heating/cooling report Visualization of thermal zones by occupancy based on department classification Grouping of zones by monthly output to provide quantitative results Graph to evaluate overall performance by building level

30 REPORTING FUNCTIONALITY Hourly heat transmission report Visualization of envelope thermal performance based on surface average heat transmission Grouping of surfaces by orientation and hourly output to provide quantitative results Results color coded for overall performance evaluation (3D & numerical) Result s

31 REPORTING FUNCTIONALITY Hourly heat transmission report Grouping and visualization of selected zones per selected hour Results aggregated and displayed

32 WORK-IN-PROGRESS LOCAL OPTIMIZATION Storage of report data Simulation output saved in conjunction with input model Data can retrieved and used for comparative analysis Min/Max scale values associated to color coding support visual comparison 50% windows w/vertical shade_12 pm_january 50% windows w/vertical shade_12 pm_august 50% windows w/vertical shade_4 pm_january 50% windows w/vertical shade_4 pm_august

33 Cost Estimation Module - Architecture INPUT DAT SET Project Name City Facility Name Footprint State Model Name Perimeter Country Floors Above Exterior wall area Zip code Floors Below Roof area Gross Area Floor to floor height Number of stairs Window area Number of elevators

34 Summary of PACES Functionality REVIEW OF ECD COST ESTIMATION MODULE

35 Output Format & Reporting (review of p 120) Requirements for cost estimating at different design phases REVIEW OF ECD COST ESTIMATION MODULE

36 The Method Being Followed: Requiring specially configured BIM models during design destroys the design effectiveness uning BIM Robust post-processing of widely varied assessment tools is the only reliable means to gain effective use All the interfaces developed here are made compatible with their analysis interfaces through significant post-processing Concept design Design development Contract model Construction

37 Thank you, The Georgia Tech Team