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En presentasjon av Statsbygg

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En presentasjon av Statsbygg Powered By Docstoc
					The National Museum at Vestbanen - Oslo, Norway
Architect Competition using open BIM (IFC)

                    Washington Convention Center, Washington D.C.
                                                 Session W100 - Dec 8, 2009

                  Domain Coordinator Frode Mohus, M.Sc., Statsbygg
                                       fm@statsbygg.no – www.statsbygg.no/bim


                                                 A presentation byStatsbygg
New National Museum at Vestbanen
• The “best site” in Oslo City center (site of the old Oslo
  Central West Railway Station)
• An architectural competition in two phases, where
  Phase 1 was an open international competition (in a
  slow market) – Phase 2 limited to 4-6 contesters
• Expected many entrants/competitors (~200–500?)
  and even more registrations (from BIM “curiosity”?)
• Project required net functional area 361,775 ft2
  (33,610 m2), plus allowance for an optional office
  building within the competition area
The competition site at Vestbanen




       Source: Finn.no 3D maps - http://kart.finn.no/3d/
Competition timeline
Phase 1
• Opening Date: March, 30, 2009
• Closing Date: June 12, 2009
• Jury Decision (4-6 contesters): September 3, 2009
Phase 2
• Opening Date: November 30, 2009
• Closing Date: February 26, 2010
• Jury Decision (Winners 1, 2, 3) : April, 2010
 Winners invited to participate in Negotiated Design
  Contract Competition after Phase 2
Why BIM requirements?
• Part of Statsbygg’s long term strategy – this is a
  natural next step …
  •    Target: We will use open BIM standards in “all” our business
  processes after 2010
• Expected many entrants/competitors
  •    BIM for efficient evaluation and decision support
  •    No easy task to cater for many physical models
• The world moves much faster when requirements are
  set in real projects (because it has to)
  •    Either you meet them or you’re out (of business?) …
Hard facts from Phase 1
 •       Nearly 1300 registrations on the competition web
 •       Registrations from all continents around the world
 •       237 final BIM deliverables (IFC) to the model server
     •     Vide range of quality
     •     More than 100 considered to hold “good BIM quality”
     •     Most of them were “fixable”, so only a few were useless

 •       Both the number of registrations, real competition
         entrants and BIM quality is roughly as expected

  The Architects of the world are considering
   themselves “ready to BIM” (and we mostly agree!)
  Purpose of Phase 1 BIM requirements
… First: Avoid 500 physical cardboard / balsa wood models…

Visualization
• Conceptual built forms, line of sight assessment from predefined and arbitrary set points
   and axes. Models were placed in the city context according to geo-referenced 3D points
   and included in a larger, 3D GIS model of the competition area and surrounding area
Generic area quantity measurements
• Programmed vs proposed/modeled/designed area (and partly volume). Gross areas for
   space/zone objects and footprint of external walls were extracted from the models to
   ensure that the main functions’ area requirements were fulfilled in the submitted
   proposals.
Energy performance
• Areas / quantity measurements of the building envelop, external walls, doors, windows,
   roof slabs, cantilevered floor slabs etc.
The Einstein Principle applied


  ”Everything
  should be as
    simple as
  possible, but
  not simpler”



                                 A presentation by Statsbygg
Balancing conflicting considerations
• An open Architect competition is a ”very early stage”
  project activity. Proposals should only be as detailed as
  ”necessary” because additional requirements may imply a
  lot of work for a lot of people – cost/benefit applies!
• Requiring a BIM should enable us to automatically
  ”harvest” more information than a traditional process –
  picking the right requirements for a purpose is key
  •     Base quantities (lengths, heights, areas, volumes, count numbers …)
  •     Key attributes/properties for the specific purpose (like IsExternal=TRUE
  for energy simulation, FireRating or LoadBearing set etc)
  •     Reality check – Are the real world BIM authoring tools fit for the job?
“Appendix 5.6 Digital 3D model and BIM requirements”
Quotes
• ”In this project a simple digital 3D building information
  model (BIM) in open BIM standards/formats is a main
  deliverable.
• This implies that the competitor entrants must use an
  object oriented design tool that supports the specified
  open standard in this Architectural competition.
• No traditional, physical model (cardboard etc) must be
  delivered”
Sample BIM requirements in Phase 1
   «Allowed»
 • IfcSlab, IfcWall, IfcDoor, IfcWindow, IfcSpace
    «Not allowed»
 • Other object types, e.g. IfcProxy and IfcCurtainWall (we
 had to modify to allow for IfcCurtainWall during the
 competition, because of CAD application limitations when
 exporting slanted walls)
   A few selected properties required
 • e.g.: Pset_WallCommon for all External Walls shall be
 set to IsExternal=TRUE
Sample BIM requirements in Phase 1
  Site object, including existing buildings
Made available for the Architects in open BIM format (IFC). Local origin
was set, and the site was correctly oriented (so we could put the building
poposalback in the city context geo-referenced)

The project origin (Northing (N)/Easting (E)) EUREF89 596.550,000/6.642.730,000 has been set
to 0/0, and Z=0 at local City of Oslo sea level.
Cometition web – www.statsbyggcompetition.no
•   Developed by Software Innovation (in project
    cooperation with Jotne EPM Technology)
•   Dual language – English and Norwegian
•   Download of all competition base documents /files
•   Q&A publication, competition news, clarifications,
    changes, guidelines etc
•   Download of «MSMLite» offline model server
•   Upload of all electronic deliverables (typically PDF
    posters and narrative booklets), except the IFC BIM
    dliverable, that is submitted to the Model Server
Offline Model Server tool - MSMLite
•   The BIM deliverable (IFC 2x3 model) is submitted by
    using «MSMLite» (an adapted version of Jotne EPM’s
    EDMmodelServerManager™ - with Xfactor+ GIS/BIM-
    viewer from First Interactive)
   MSMLite stores a local copy of all drafts and final
    models on the contester’s PC [voluntary use]
   MSMLite offers a step-by-step validation process for
    BIM preparation before submission [voluntary use]
   MSMLite is used for final submission (upload) of the
    competition proposal BIM to Statsbygg [mandatory]
ModelServerManager Lite (MSMLite)
BIM manual implemented as process validation steps:
• Check the BIM file (syntax etc)
• Geo reference the models
• Check some object data (e.g “external” properties)
• Show a visualization from selected viewpoints
• Do area calculations
• Do anonymity check, and remove owner history and
   “suspicious” text fields
• Upload to Statsbygg competition server (upload had
   to be started before closing time deadline)
Checking /quality assurance - MSMLite steps




         “Remove Owner
      History” – Important to
        ensure anonymity


                                En presentasjon av Statsbygg
MSM Lite Example
Checking BIM for possible overlap
between functional spaces
MSMLite / Xfactor+
Main functions (net functional area) in program
Total programmed area of 33.610 m2
   BIM used to check designed area for each function and
   gross areas. Analyzed and reported from
   ModelServerManager Lite (using naming conventions)

                                                 En presentasjon av Statsbygg
The MSMLite reports
The GIS model with pictometry




                        En presentasjon av Statsbygg
Phase 1 ”BIM placed in GIS” sample




    From Xfactor+ generated WMV video – www.first-interactive.com
Some test results for BIM authoring tools [1]
 •   Nemetschek Allplan 2008
     Problem with the correct project structure > The building structure does not include a site –
     there is currently an IFC export error preventing the site to be properly exported. Therefore
     the Allplan Drawing File that contains the imported 3Dsite geometry is not assigned
 •   Graphisoft Archicad 12
     Passed!
 •   Autodesk AutoCAD Architecture 2009
     When exporting the site correct as IFC site the z axis will be shifted by some meters, when
     exporting the site as a story, then the site is geometrically correct, but became a story.
     Difficult / impossible to export the space number / IfcSpace.Name correctly, the space
     number / IfcSpace.Name is always the Style name.
 •   Bentley Architecture V8 (Triforma)
     Problems with the IFC export … Export Test Spaces : OK >> but tricky export : TriForma
     IFC Export, Tab Settings > select: Generate 3D Spaces from 2D Spaces.




                                                                          En presentasjon av Statsbygg
Some test results for BIM authoring tools [2]
 •   Autodesk Revit Architecture 2009
     3D site is not visible in plan views only in 3D. Problem with the project structure : two
     additional IfcBuildingsStoreys were exported > these additional stories SITE and 01 are
     empty and not correct. The 3D shape of the site is not exported as IFC site with 3D
     geometry, but as an additional IfcBuildingElementProxy. The reuse of the provided spaces
     is only possible in the same storey, if you try to move them in a different storey the GUID
     and the space number changed (only possible by cut & paste)
 •   Nemetschek Vectorworks 2009
     3D site was not imported & the two existing buildings were not imported, it was only
     possible to import the spaces. There is a bug with the space name & number, both were
     changed during the IFC import, number became name and name became number.




                                                                         En presentasjon av Statsbygg
Lessons learned from Phase 1
 •       Yes it was a good idea (we think )
 •       Architects (worldwide) are in possession of tools and
         knowledge for using open BIM (and probably learned a few
       lessons about BIM and the capabilities of their applications as well)
     •   A few complaints, but fewer than expected
 •       But even simple requirements are not always met …
            Still…
 •       Open BIM standards and ModelServer technology
         gave added value
     •    Visualization – volumes, sight lines etc
     •    Area check, gross/net area (placement of functions)
     •    Anonymity
Phase 2 – Test house pre-phase 2 testing
• Before the final BIM specification for Phase 2 was
  concluded a request / dialog memo was sent to the six
  contesters, requesting for ”test house BIMs”
• The purpose was to recheck and possibly modify the
  draft BIM specification before competition start, and to
  help the contesters using their BIM autoring tools as
  efficiently as possible, giving advice and guidance.
• AEC3 and Jotne EPM Technology are Statsbygg’s
  advisors on IFC model/ model server an BIM tool issues
• Three of the six contesters issued test houses
Phase 2 – A sample test house




    From Solibri Model Checker (SMC) – www.solibri.com
Phase 2 – Tuning the BIM requirements
• From the three test house submissions (using three
  different BIM authoring tools) we learned that
 • The Architects’ BIM knowledge seem generally fair, and for some
 very good
 • There are implementation issues related to several of the BIM
 tools – recent updates seem to help for issues reported earlier
 • Some of our initial draft requirements had to be altered, either by
 changing them from ”mandatory” to ”recommended” or ”optional”,
 by being more explicit, or by indicating alternative approaches
 • A revised, final BIM Specification (”Appendix N5.6”) was then
 completed for use in Phase 2 of the competition (copies available)
Sample BIM requirements in Phase 2
Phase 2 Competition started Nov 30, 2009




     www.statsbyggcompetition.no
What now?
• During Phase 2 we will give contionuous support to the
  six contesters, trying to provide advice and guidance
• Guidance /Q&As will be issued on the competition web
• If necessary certain requirements may have to be
  emphasized or possibly even changed
• Voluntary test submissions of draft BIMs will be
  welcomed during the competition – we probably will be
  offering services for draft energy, CO2 equivalent, and
  costing calculations.
Future plans?
• Statsbygg will use the experiences from the Vestbanen
  Competition to update and improve the current Statsbygg
  BIM Manual (v. 1.1) – as well as using it in dialog with
  similar agencies, like GSA in the U.S., Senate Properties
  in Finland, and the Danish Enterprise and Construction
  Authority (DEACA) in Denmark
• The BIM manual requirements will most likely be
  implemented as validation process steps in a model
  server invironment, enabling us to check designed BIMs
  againt “requirement BIMs” – IFC can be used for both
Thank you for listening! Questions?




    What does BIM look like? Google Maps Street View from Bim, West Virginia

				
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