BIM or Building Information Modelling is a process for creating and managing information on a construction project across the project lifecycle. One of the key outputs of this process is the Building Information Model, the digital description of every aspect of the built asset. This model draws on information assembled collaboratively and updated at key stages of a project. Creating a digital Building Information Model enables those who interact with the building to optimize their actions, resulting in a greater whole life value for the asset.
BIM requires collaboration between designers. The coordination of the single models into the federated (combined) model requires close collaboration. Clash detection and the subsequent clash resolution is a key component in producing a buildable design. Each clash that is resolved during the design process eliminates the possibility of a clash staying undetected until it becomes an on-site re-work event that will have cost and potentially time implications. Undetected clashes resolved onsite may also result in unsatisfactory and uncoordinated solutions.
A clash within a model occurs when a modelled geometric element or component occupies the same space as another element or component. For example, a steel through the location of an internal door. Each individual design organization will be responsible for ensuring that their model is free of clashes. For example, components of the architectural model should not clash with any other architectural components. A WIP model should not be issued as a shared model until such clashes have been resolved (refer to the requirements of the Common Data Environment for more detail).
BIM Supported Planning and Scheduling has the ability to link the individual 3D parts or assemblies with the project delivery timeline, including scheduling of resources and quantities, and modular prefabrication to assist tracking and project phasing. In addition to collaboration, 4D simulations function as communication tools to reveal potential bottlenecks.
Integration of design with estimating, scheduling and costing, including generation of Bills of Quantities, and derivation of productivity rates and labour costs. The calculation of quantities on the basis of objects is highly efficient as it assigns all identical objects to the appropriate item in the specifications. During the processing, elements that have already been recorded are automatically marked so that an element cannot be allocated twice by mistake within the same item and don't need to study several Drawing. Through 3D model can understand the structure of the project easily & calculate all the Structural & Architectural accurate Quantities as well as verification method also very simple.
Facility Management [6D] using Integrated FM Portals. Benefits includes Streamlined maintenance, Economical renovations and retrofits, Enhanced life cycle management of Assets.
Sustainable or green building construction aims to embody the principals of sustainable development i.e. environmental protection, economic development, and social development, in the siting, design, building, maintenance and occupation of buildings.