Modeling

BIM as Modeling, involves authoring and analyzing 3dimensional building models with information. Many models are developed through a project life-cycle to meet the project goals. Each model carries information specific to the purpose and in many cases, the same models are developed from one stage to another by adding more details.

Conceptual Design Models

An architect’s team being the project lead consultant initiates the first set of BIM models in the conceptual design stage. These models are used to define the project massing and analyze early planning parameters, orientation, wind directions etc. Working closely with the MEP and Structural engineers during this phase is important.

Construction Models

Construction Models are generally developed by the contractors using design models developed in the previous phase. They carry information specific to the construction and assembly techniques used in the project. These models are further developed to simulate and analyze the construction schedule and also to generate quantities for cost estimation.

Design Development Models

As the conceptual design is finalized, architects and engineers develop a multi-disciplinary BIM model. Most of the information incorporated into the Concept Model is reused to avoid duplicating modeling efforts. The models developed during this stage are used for detailed design analysis and also to identify coordination issues between all the disciplines.

As-built Models

As-built models are developed along with the construction of the actual project on-site. Decisions made on the site are documented in the as-built models to record the final building accurately on the BIM model.