The BIM Concept BIM Building Information Modeling Also

The BIM Concept BIM= Building Information Modeling Also known as „Virtual Building” or „Building Simulation” Drawings, building views, visualizations, calculations and quantity take-offs are automatically derived from the 3 D model.

Working Concept – BIM § § § § Single file concept: The complete building model and all of its representations are included in the BIM file Real architectural elements used for modeling Changes of the model affect all related drawings (and vice versa) Automatic generation and updating of documentation Architectural content (libraries) Building information data attached to the elements Additional materials (rendering, animation, quantity take-offs, schedules)

Evaluation– BIM Benefits Compared to 2 D and 3 D CAD • Elements have architectural meaning • Changes on one drawing have influence on all others • Rich visualization content (animation, sun studies, renderings etc. ) • Automatic quantity take-offs, schedules • Connection to structural, energy calculation, collision detection etc. software Drawbacks • Higher training requirements • Might be difficult to learn the BIM approach for people who were previously 2 D users • Might be more difficult to handle complex geometry (e. g. freeform structures) then in 3 D and 2 D CAD