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Bcsa Guide to Building Information Modelling

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Bcsa Guide to Building Information Modelling BCSA GUIDE TO BUILDING INFORMATION MODELLING CONTENTS 1. Introduction Page No 3 2. Glossary of terms Page No 5 3. The fundamental principles of BIM Page No 7 4. Pre-qualification and pre-contract questionnaires Page No 10 5. Construction Industry Council (CIC) BIM Protocol Page No 27 6. BIM Execution Plan Page No 31 7. Information provided to the steelwork contractor (during design/delivery) Page No 41 8. Information provided by the steelwork contractor (during design/delivery) Page No 43 9. Construction to Building information exchange file (COBie) Page No 45 BCSA Guide to Building Information Modelling Page | 2 1. INTRODUCTION On 31 May 2011 the Cabinet Office published the Government Construction Strategy which announced the Government’s intention to require ‘collaborative 3D Building Information Modelling (BIM)’ on all of its projects by 2016. The detailed requirements for delivering a construction project using BIM are set out in PAS 1192-2: 2013 ‘Specification for information management for the capital/delivery phase of construction projects using building information modelling’. BIM is commonly considered to be equivalent to 3D modelling and while 3D modelling is a key part, BIM is wider than this. BIM is best described as ’a process for controlling the sharing of electronic information at every step in the construction process from concept through design, construction, handover, maintenance and demolition’. On a BIM project there are a number of key information transfer requirements at a variety of different stages in the construction process. The figure below provides an outline of the information transfer relevant to steelwork contractors at each stage of a BIM project. Inputs and outputs which are typically standard for any construction project are shown in italics, whilst information which is additional when working on a BIM project are shown in bold. BCSA has reviewed the main BIM inputs and outputs required at each stage of the process and developed a series of examples and supporting information to help BCSA members understand the BIM process, complete the various BIM questionnaires and help define the information that the steelwork contractor is required to provide. BCSA Guide to Building Information Modelling Page | 3 Information Transfer Summary BCSA Guide to Building Information Modelling Page | 4 2. GLOSSARY OF TERMS The standards and documents that support Building Information Modelling are littered with a plethora of terms that may not be familiar to the majority of steelwork contractors. For anyone working in this area it is essential they have a rudimentary grasp of these terms to fully understand BIM. To assist members BCSA has put together a list of the main BIM terms together with simple, understandable explanations. As-built Record drawings and documentation defining deviation to the designed information occurring during construction at the end of the project (as defined by PAS 1192- 2:2013). For the purposes of steel construction as-built means the geometry plus tolerances from rolling, fabrication and erection Asset Information Discipline of managing asset-related organisational data and information to a Management (AIM) sufficient quality to support organisational objectives (as defined by PAS 1192-3:2014) Asset Information Maintained information model used to manage, maintain and operate the asset (as Model (AIM) defined by PAS 1192-2:2013) OR structured and unstructured data and information that relates to assets to a level required to support an organisation’s asset management system. An AIM can relate to a single asset, a system of assets or the entire asset portfolio of an organisation (as defined by PAS 1192-3:2014) Attribute Piece of data forming a partial description of an object or entity (as defined by PAS 1192-2:2013) Author Originator of model files, drawings or documents (as defined by PAS 1192-2:2013) BIM Execution Plan Plan prepared by the suppliers to explain how the information modelling aspects of a (BEP) project will be carried out (as defined by PAS 1192-2:2013) CIC Scope of Services Multi-disciplinary scope of services published by the Construction Industry Council (CIC) for use by members of the project team on major projects (as defined by PAS 1192-2:2013) Clash Detection Detection of possible collisions between elements in a building information model which would not otherwise be desired or buildable on site Clash Rendition Rendition of the native format model file to be used specifically for spatial coordination processes. To achieve clash avoidance or to be used for clash detection (as defined by PAS 1192-2:2013) Client Individual or organisation commissioning a built asset (as defined by PAS 1192- 2:2013) COBie (Construction Structured facility information for the commissioning, operation and maintenance of Operation Building a project often in a neutral spreadsheet format that will be used to supply data to the information exchange) employer or operator to populate decision-making tools, facilities management and asset management systems (as defined by PAS 1192-2:2013) Common Data Single source of information for any given project, used to collect, manage and Environment (CDE) disseminate all relevant approved project documents for multi-disciplinary teams in a managed process (as defined by PAS 1192-2:2013) Data Information stored but not yet interpreted or analysed (as defined by PAS 1192- 2:2013) Design Lead Role of setting design standards and coordinating the design Design Intent Model Initial version of the project information model (PIM) developed by the design suppliers (as defined by PAS 1192-2:2013) Document Information for the use in the briefing, design, construction, operation, maintenance or decommissioning of a construction project, including but not limited to correspondence, drawings, schedules, specifications, calculations, spreadsheets (as defined by PAS 1192-2:2013) Drawing Static, printed, graphical representation of part or all of a project or asset (as defined by PAS 1192-2:2013) Employer’s Information Document setting out the information to be delivered, and the standards and Requirements (EIR) processes to be adopted by the supplier as part of the project delivery process (as defined by PAS 1192-2:2013) BCSA Guide to Building Information Modelling Page | 5 Federated Model Model consisting of connected but distinct individual models (CIC BIM Protocol. First Edition. 2013) Graphical Data Data conveyed using shape and arrangement in space (as defined by PAS 1192- 2:2013) Industry Foundation Vendor neutral open data exchange specification. It is a file format developed for the Classes (IFC) construction industry and is commonly used in Building Information Modelling to facilitate interoperability between software platforms. Originally developed by International Alliance for Interoperability (IAI) – now renamed Building SMART International. Information Representation of data in a formal manner suitable for communication, interpretation or processing by human beings or computer applications (as defined by PAS 1192-2:2013) Information Exchange Structured collection of information at one of a number of pre-defined stages of a project with defined format and fidelity (as defined by PAS 1192-2:2013) Information Tasks and procedures applied to inputting, processing and generation activities to Management ensure accuracy and integrity of information (as defined by PAS 1192-2:2013) Information Manager Person appointed, initially by the Employer, to perform the Information Management Role. (CIC BIM Protocol. First Edition. 2013) Information Model Model comprising: documentation, non-graphical information and graphical information (as defined by PAS 1192-2:2013) Information Modelling Use of data to provide information through better understanding, by applying logic or mathematical functions to derive new data (as defined by PAS 1192-2:2013) Interoperability In the context of BIM is the ability to manage and communicate electronic product and project data between collaborative firms systems and software successfully Levels of Definition Collective term used for and including “level of model detail” and the “level of information detail” (as defined by PAS 1192-2:2013) Master Information Primary plan for when project information is to be prepared, by whom and using Delivery Plan (MIDP) what protocols and procedures, incorporating all relevant task information delivery plans (as defined by PAS 1192-2:2013) Model File Native, proprietary format, CAD file that can be a 2D or 3D model (as defined by PAS 1192-2:2013) Project Information Information model developed during the design and construction phase of a project, Model (PIM) consisting of documentation, non-graphical information and graphical information defining the delivered project (as defined by PAS 1192-2:2013) Project Implementation Statement relating to the suppliers’ IT and human resources capability to deliver the Plan (PIP) EIR (as defined by PAS 1192-2:2013) Reference file CAD model file associated or linked with another CAD model file. Also referred to as an “X-ref” (as defined by PAS 1192-2:2013) Supplier BIM Form conveying the capability and experience of a supplier to carry out information Assessment Form modelling in a collaborative environment (as defined by PAS 1192-2:2013) Supplier IT Assessment Form conveying the capability and IT resources of a supplier for exchanging Form information in a collaborative environment (as defined by PAS 1192-2:2013) Supply Chain Resource Form summarising
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