BIM

BIM

1. Terminology

   • definition of BIM
     • “...the process of generating and managing data about the building during its life cycle”, the NBS
   • Project information model
     • A project’s graphical and non-graphical data and documentation
   • Lonely BIM
     • Enter text here
   • Collaborative BIM
   • Soft Landings
   • 4D(time) BIM
   • COBie
   • Common data environment
   • 5D (cost) BIM
   • Common data environement
   • Data Drops
   • Pas 1192
   • 6D (=facilities management (FM) BIM
   • Interperability
   • clash detection
   • Industry foundation clashes (IFC)
   • BIM task group
   • Government BIM strategy
   • Construction Industry COuncil
   • The National BIM library

2. Building information modelling

   • recently defined by the BIM Working Party for the Government Construction Client Group: ‘Building Asset Information Modelling

3. What is a BIM?

   • a BIM is a database of information about a built asset
     • asset might already exist, it might partially exist (i.e. it is to be extended or is part way through construction) or it might be planned
       • database will start its life through the design process
         • when they are creating/developing their designs, will, using BIM software, create intelligent designs
   • address many of the industries failings including waste reduction, value creation and improved productivity
   • BIM becomes = primary tool for documentation where plans, schedules and bills of quantities may be derived
   • It moves away from traditional project working
     • Old Way
       • parties often work on separate information pools using several different (and usually incompatible) software packages
     • BIM way
       • all parties (including architects, surveyors and contractors) sharing, and effectively working on, a common information pool
       • BIM involves building a digital prototype of the model and simulating it in a digital world
   • BIM = common, coordinated source of structured information 4 all parties in the delivery process, e.g. design, construct, and/or operate
     • access to the same data
     • information loss associated with handing a project over from design team to construction team and to building owner/operator is kept to a minimum
   • BIM Models
     • representations of the actual parts/ pieces used to construct a building + geometry/spatial relationships/ geographic info/ quants/building components
     • BIM can be used to demonstrate the entire building lifecycle from construction through to facility operation
     • BIM provides a common environment for all information defining a building, facility or asset, together with its common parts and activities
       • building shape, design and construction time, costs, physical performance, logistics

4. WHAT IS COBie?

   • COBie stands for Construction Operations Building Information Exchange.
     • Government Construction Strategy states = structured asset information useful to the owner operator for post occupancy decision making.”
   • COBie will become mandatory for public sector projects by 2016.
   • What??
     • COBie is a dataset which is produced as part of the Project Information Model (PIM)1, containing building/facility data
     • captures all of the facility information, except for the design which is completed using the BIM(s)
     • COBie should be read in conjunction with the BIM(s) throughout the project duration and post completion to provide a full dataset for a facility
   • History
     • UK government published its Building Information Modelling (BIM) Working Party Strategy
     • Government's intention to require collaborative 3D BIM (with all project + asset information, documentation and data being electronic) on its projects
     • software and data requirements for this detailed in the report are Construction Operations Building Information Exchange (COBie)
     • Improve the handover process to building owner-operators. A Excel spreadsheet
       • data inside a COBie spreadsheet
         • idea behind COBie is that the key information is all pulled into one format and shared between the construction team at defined stages in a project
           • information being drawings, specifications, schedules, reports
     • COBie initially developed as (FM) tool to ensure that the client receives the information in as complete and as useful format
       • It is now used for compiling project information throughout the design, construction and operation stages
   • COBie DATA
     • data required as part of COBie is no different from the information already required through design and construction contracts
     • objective = standardise the format and structure of that information to maximise its use and accessibility during design, construction and FM
     • Its a collaborative tool whereby collectively the project team is responsible for providing the data
     • Information is required at various stages within the project
       • 1. Data Drop 1 (DD1) – Client Requirements and Constraints
       • Data Drop 2 (DD2) – Outline Solution
       • Data Drop 3 (DD3) – Construction Information
       • Data Drop 4 (DD4) – Operation and Management Information (Ongoing Operations and Management)
       • Data Drop 5 (DD5) – Post Occupancy Validation Information
   • WHAT DOES COBie LOOK LIKE?
     • currently compiled and presented using a simple spreadsheet
       • this is used as an interim step to COBie specific software which allows open exchange of all project data
       • Project team members only enter the data for which they are responsible
     • products and equipment listed in design schedules should be entered into the COBie
       • Spreadsheet usually contain the following worksheet
         • Contact
           • actors and their roles
         • Facility
           • project, site and building details
         • Floor
           • Data should be split into floors
         • Zone
           • super-elements that contain multiple spaces and provide a specific function
         • Spaces
           • functional locations where operation and maintenance occurs
         • Type
           • Products and equipment noted in design schedules
         • System
           • group of components that work together to provide a specific building service e.g. ventilation
         • Component
           • Details of the products and equipment listed in the design schedules
     • Completion of COBie sheets
       • 1. Initially the ‘Contact’ and ‘Facility’ sheets need to be populated;
       • 2. Followed by ‘Floors’ and ‘Zones’;
       • 3. Followed by ‘Spaces
       • 4. Followed by ‘Types’ and ‘Systems’
       • 5.‘Components’.

5. Key BIM benefits

   • Design
     • improved coordination of design and deliverables between disciplines
     • improved project understanding through visualisation
     • improved design management and control, including change control
     • improved understanding of design changes and implications through parametric modelling.
   • Compliance
   • Costing/economics
     • ability to perform cost analysis as the design develops, and to check for adherence to budget/cost targets
     • ability to understand cost impacts of design changes
     • improved accuracy of cost estimates
   • Construction
     • ability to perform simulation and analysis for regulatory compliance
     • ability to simulate and optimise energy and wider sustainability performance
   • Operation and management