building information modeling (bim) — the … vancou… · · 2011-03-02rod yeoh, principal,...
TRANSCRIPT
BUILDING INFORMATION MODELING (BIM) — THE WHOLE TRUTH
10:30am – 12:00pm
Presenter: Rod Yeoh, Principal,
Omicron Architecture Engineering Construction
Omicron AEC+ Architecture, Engineering, & Construction+ Established in 1998+ Almost 200 office and field staff+ Head office in Vancouver+ Office in Calgary, Satellite office in Victoria,
BC.+ Integrated Project Delivery focus + Market Sectors – Institutional/Commercial,
Retail, Renewals, Office Interiors, Residential/Oilsands
Omicron AEC+ BIM History
– Revit Architecture since 2003– Revit Structure since 2006– Revit MEP started 2008– 4D scheduling started testing 2009– 5D estimating – trials in 2010– Started linking specs to BIM in 2010– Created roles of Director of Virtual Design
& Construction, BIM Manager, and Virtual Construction Specialist
Outline+ Introduction+ BIM Mindset+ Training+ Standards & Processes+ Hardware+ Integration+ Model Sharing+ Fees
Introduction
What is BIM?1. BIM is significantly more than 3-D CAD drawing. 2. BIM is the process of generating and managing
intelligent building data during the building's life cycle.
3. BIM is a building design and construction methodology characterized by the creation and use of coordinated, consistent, and intelligent data about a building project in design and construction, and even into operation.
4. The key to BIM is the building INFORMATION model.
5. A BIM is a virtual prototype of the building.
BIM Mindset+ 2 Main challenges to overcome in Mindset
1. Traditional Design/Bid/Build thinking and processes
2. Tempering Expectations from BIM
BIM Mindset
Tempering Expectations+ Goal: to increase productivity and margins, create a
better product, and increase value for clients – To do this, would ideally have a detailed, fully
coordinated “Virtual Building” from which we can coordinate systems, schedule construction tasks, obtain accurate cost estimates, and even fabricate and lay out systems
– Initially expect a single or linked models that are fully interoperable & coordinated
BIM Mindset
Expectations+ The realistic goal
(in the near term) is that there will be multiple models (Architectural, Structural, MEP, Construction) that can be used to coordinate, schedule, and estimate costs
BIM MindsetExpectations
– The industry and tools have not reached the point where we can have a single model that can be used by all stakeholders for their respective purposes
BIM MindsetExpectations
– There will be some perceived duplication of work in creating multiple models and separate details, but in the long run, BIM will still increase productivity and quality, reduce schedules, improve cost certainty at various stages, and add value for the client
BIM Mindset
+ Cannot work in BIM and expect traditional deliverables (especially at preliminary project stages)
– Information is in the model, not drawing sheets
– Tagging, call-outs, etc. will be wrong, or not there at all
– Learn to review the model, not traditional drawing sheets
Leadership
The key to success is Leadership*:+ Leadership group must share aspirations
– create the current you want to swim in
+ *Credit to Ken Sanders, FAIA, Gensler at AU 2008
Leadership
+ Smart and talented people will surprise you with their innovation – seek influence, not control
LeadershipEmotional Phases of Change:+ “The Right Stuff”
• The payback for your investment begins to materialize
Successfully navigating these phases means calibrating your pace of delivery
Training
+ Mix of self-directed (tutorials, etc), internal (staff as trainers) and external (3rd party trainers) training
+ Training must be practical, not just theoretical – source trainers who use the tools regularly on projects
Training
+ “Just in time” training– Provide training on projects when the tool
will be used right away
Training
+ Review knowledge and capabilities of all staff
+ Develop training plan tailored to the various levels that exist
Training
+ Continue ongoing training at these various levels– Production Staff new to BIM– Production Staff with some BIM
knowledge– Project Managers – BIM Workflow
Training+ Architecture
– Train on BIM workflow – how different it is from regular workflow
– Train on creating and managing models to be shared with all disciplines
Training+ Architecture
– Train on using model review software (Autodesk Design Review)
– Train on specification software (Especs) in relation to BIM Authoring tool
– Train on process –decisions need to be made earlier
Training
+ Structural– Train on not just modeling, but using BIM
authoring software (Revit Structure) to generate Construction Drawings – hands on training on projects
Training+ Structural
– Train on analysis software and their interface with BIM authoring software
– Train on coordination and sharing of models with other disciplines & fabricators
Training+ MEP
– Train on using BIM authoring software (Revit MEP) – Initial implementation and hands on training on projects to generate construction drawings
– Train on analysis software (IES) and its interface with BIM authoring software
Training
+ MEP– Train on energy
modeling and lighting (including daylight) analysis
– Train on coordination and sharing of models with other disciplines & trades
Training
+ Construction– Train on using estimating and scheduling
tools (QTO/Navisworks/Vico)– Train on constructability and clash
detection reviews using BIM tool– Train Site Superintendents on use of
Virtual Model for visualisation, site coordination, clash detection, and scheduling
Standards and Process
+ Important items to address– Modeling Standards– Naming Conventions– Content Standards– Worksets (Revit)– Exporting to CAD (you will still use CAD)– Model Linking
Standards and Process
+ BIM Execution Plan– Autodesk BIM Deployment Plan– BIM Project Execution Planning Guide
• Developed for the buildingSMART Alliance by Penn State
Standards and Process
+ BIM Execution Plan– Omicron uses customized
hybridized version of both– Outlines BIM goals and
desired outcomes– Defines what, how, and
when to model based on BIM goals and desired outcomes
Standards and Process
+ Model Progression Specification– Standard that defines levels of modeling detail
required at different phases of a project• Level 100 – Massing model• Level 200 – Generic elements shown on 3D – Design
Development, many sizes not known• Level 300 – Specific Elements, Confirmed 3D object
geometry – Construction Drawings, Engineered sizes known
• Level 350 – Fully Coordinated Model• Level 400 – Shop Drawing/Fabrication Drawings• Level 500 – As Constructed Drawings
Standards and Process
+ Model Progression Specification– Also defines Model Component Author (MCA)
• Who models and controls what elements at various stages
• Arranged by uniformat structure (customize to suit)
– Customize the MPS to suit your policies and processes – may be different for different projects
Standards and Process
+ New modelers have a tendency to over-model
+ Don’t try to model all details+ You don’t have to model everything -
Don’t be afraid to use drafting views
Standards and Process+ Level of Detail
– Define the purpose for each model and model only what you need to suit this purpose
Hardware
+ Get the best and fastest hardware that you can afford for power users– 64 bit, Dual Quad cores, fastest front side
bus (FSB)– 12 gigabytes of RAM minimum– Fast Video Cards, 2 gigs, Direct X 9 (10)
Hardware
+ Flow higher end computers to average users as you upgrade– 64 bit, 4-8 cores, fast processor– 12 gigabytes of RAM minimum– Fast Video Cards, 1 gig, Direct X 9 (10)
Hardware
+ Multiple offices or locations– Riverbed / accelerators– WAFS– Revit Server
Integration
+ Mechanical and Electrical “blood and nerves” are then installed and very closely linked and coordinated with the “bones” and “skin”
+ Need to design and model the building more like how it would be constructed in the field. The structural “skeleton” should be the basis on which the Architectural “skin” is overlaid
Integration+ Team members need to understand what
other team members need and to what level of detail they need it, at each phase of design and construction
Integration+ Using Architectural Models for Engineering
and Construction Analysis– Ideally would be able to easily convert
Architectural Models for use in analysis– Doesn’t work as easily as advertised
• Eg. Converting Architectural Model to use for Energy modeling
• Architectural models need to be created in a specific way
• We’ve found it is currently easier to create the energy model from scratch
Integration+ Omicron uses Revit suite or products
– Create separate models• Architectural• Structural• Mechanical• Electrical• Construction
– Link models together and copy monitor critical items (grids, structural walls, etc.)
Integration+ Coordination
– Low hanging fruit of BIM– Can save enough in change order costs
to pay for costs of BIM many time over– Need not model everything
• Major Architectural, Structural, HVAC, Large Piping, Conduit, Cable trays, etc.
Integration
+ Integration with Construction– Build Models the way the building will be
constructed• Eg. Columns should be modelled floor by floor, not
continuous• Slabs zoned to match concrete pours
– Allows for accurate quantity take-offs, estimates, and just-in-time delivery
Integration
+ Integration with Construction– Model elements must have information required
by Construction• Codes mapped to CSI Master format or Uniformat cost
codes• Materials and quantity information for take-offs• Elements broken out as required for sequencing
Integration
+ Integration with Construction– Allows for realistic 4D sequencing simulations
• Can tie model elements to scheduled tasks
– Model assembly codes that can be used for scheduling and estimating
• Revit / Timberline estimating / Timberline Accounting / Especs / Navisworks
Integration
+ Sequencing model
– BC Hydro Horne Payne Building (Burnaby, BC)
– Jaguar/Land Rover Dealership (Victoria, BC)
Model Sharing
+ Sharing model with Trades– For information only?– For visualization?– To form part of Contract?– To take off quantities?– Expedite or eliminate shop drawings?– Legal implications
+ Currently difficult (in local market) to find BIM capable trades
Fees & BIM
+ Overall project costs to owner should be lower (including change orders etc.)
+ Need to re-think the traditional distribution of Design Fees
+ Construction Managers may require more CM fee, but should result in fewer RFIs, change orders, etc.
Fees & BIM
+ Depending on levels of detail and uses –modeling effort could take more time than traditional drawings
+ Who benefits?– Owner– Contractor– Designers– Everyone!
Fees & BIM
+ Shared compensation model– Overall project costs lower– Sharing of saved costs among entire
design and construction team– Owner benefits with lower costs,
shortened schedules, and better quality
Implementation
+ Start using various BIM tools on projects, but not all at once– Staged process - implement various BIM
components or tools one at a time on different projects
+ Develop and implement methodology to link various models together
+ As use of various BIM tools becomes more successful, begin using multiple BIM tools on projects
Implementation
+ Find or develop tech savvy people who are excited about BIM
+ Staff building models have to also know how a building is actually built – can’t “fake-it” like in CAD
+ Process, Process, Process
Final Thoughts+ BIM is inevitable – get on board or get left
behind
+ There is no “Easy” button
+ Implementing BIM is not as simple as some think – can’t just buy BIM software and think you are now doing BIM
Final Thoughts+ Most difficult aspect of BIM implementation
is changing traditional mindsets, expectations, and processes
+ Industry hasn’t even started scratching the surface of what is possible - efficiency, integration & interoperability, facility management, etc.