Building Information Modelling - BiM
What is BIM ?
Building Information Modelling (BIM) is revolutionising the way built assets are conceived, designed, constructed, managed and maintained. There are many definitions currently in use, a simple one is “BIM is an integrated digital process giving coordinated reliable and shareable information about a project through its entire lifecycle”
Why should I care?
Other sectors such as aerospace, shipbuilding and automotive industries have employed similar processes over recent decades to significantly improve their product, save time, reduce cost and reduce risk. The built environment has been slow to follow but is now accelerating. As BIM adoption starts to grow every sector in the industry will feel the impact and more significantly, start to feel the benefit.
Why do we need it?
The construction industry is diverse, with the vast majority of suppliers small or medium sized companies. As clients seek to get more value for their investment and insist on a better quality product a step change in the delivery process is required. A real need to reduce cost, improve our health and safety record and reduce carbon is driving more collective responsibility from the client through to the smallest supplier. Adopting BIM presents the best option to achieve these aims. The cost of building has increased by 100% over the past twenty years, compared to motor cars which have increased by approximately 15%. BIM presents the opportunity to improve performance which has been recognised in the UK Government targets to improve deliver projects 50% quicker and for a 33% reduction in the initial cost of construction and the whole life cost.
Where is it being adopted?
BIM adoption is developing around the world albeit in slightly different ways. In the UK central government has been at the forefront of the change, mandating the use of BIM by 2016 on central government funded projects. The private sector is now increasingly specifying the use of BIM and many suppliers are seeing significant commercial benefits from operating a BIM process.
Why use William Dyer Electrical UK Ltd for BIM Projects?
Our team includes leading practitioners from client, supplier and academic backgrounds. Our team have many years practical experience gained from continuously working on a diverse range of projects across all sectors. We can evidence the benefits and challenges that BIM adoption presents which allows us to quickly and efficiently analyse need and support our clients. Our work currently takes us around the UK.
BIM allows the project team and users to share a virtual, digital model of a project’s geometry and data properties throughout its entire lifecycle. It marks a shift from the use of traditional document based information management to a fully integrated digital process, with consequent major benefits for productivity, quality and sustainability. The technology aspects of BIM have often been emphasised, but the key difference is the working collaborative working practices it encourages. This makes BIM a powerful ally in the battle for greater productivity, risk reduction, sustainability and safety. It also helps reduce waste and cut costs. BIM is a broad term relevant to most sectors in the built environment and despite the acronym, can be used for both construction and infrastructure projects including transport and energy assets. It is equally applicable to new and existing facilities. “We see BIM as a catalyst for change. If you believe it’s just an IT system, you’ve missed the point.”
BIM uses include: 2D traditional documentation and drawings. These still play a part in a BIM process but are derived from a 3D modelling process with 2D outputs extracted as views or slices of a 3D model as the ‘single version of the truth’ 3D digital models of the geometry of the project, often initiated from concept mass models for new build or derived from laser scans for existing facilities.. The digital 3D model is the heart of the BIM process, embedded with intelligent data (metadata) which enables 3D visualisations and model walkthroughs, virtual mock-ups, prefabrication, clash detection and coordination and scheduling. 4D time sequencing which enables construction and logistics planning and management, including scheduling, tracking and phasing. 5D cost estimation, including more rapid budget estimating, dynamic links to the developing 3D design model, the generation of bills of quantities and calculation of productivity rates and labour costs. 6D operational applications, capturing relevant data during the design and construction phased and integrating this with computer-aided facilities management (CAFM), potential for live data capture in use (using sensors to feedback and record relevant information).
UK government policy and Level 2 BIM In the UK, the government BIM strategy began in May 2011 and is focused on the adoption of BIM workflows and technologies by both private and public sector organisations involved in the procurement of buildings and infrastructure. The motivation for the adoption of BIM were set out in the Department for Business Innovation and Skills (BIS) BIM Strategy and Government Construction Strategy (2011) Briefly these are • Reduce asset costs, improve operational efficiency and reduce carbon emissions • Enable greater efficiency and effectiveness of construction supply chains • Assist in the creation of an innovative sector as a base our future growth ambitions “Level 2 BIM is a series of domain specific models (eg architectural, structural, services, landscape) with the provision of a single common environment in which to store shared data and information, for example COBIE“ The government identified in their strategy that they will require Level 2 BIM collaboration on all centrally procured projects by 2016. Levels 0-3 define the level of BIM maturity used on a project. As defined in British Standard document PAS1192- 2:2013, Level 2 BIM requires the use of combined or “federated” separate discipline 3D digital models containing data, shared using a Common Data Environment (CDE). This required level for BIM maturity for all centrally procured government projects is also helping to drive the adoption of BIM by private sector clients and their supply chains and is seen as an exemplary.