Myth #10: The geometry requirements are too burdensome
It may be tempting to model every single element on a project but there’s no need to take this down to nuts and bolts unless a client has specified this. BIM is best typically used to ‘imply’ a product rather than manufacture it – so you should only need enough information to allow the project team to specify relevant construction products. Throughout the project lifecycle, this implication will be replaced by actual products and the level of information will increase. Objects may start off as a ‘bounding box’ (a 3D rectangle that represents an object yet to be fully determined) with rough dimensions serving to provide an indication of what’s intended. At a design stage actual product information can be included so there’s no need to waste time early on. The NBS BIM Toolkit defines the level of detail required for thousands of objects across the project lifecycle.
The truth? Clients should determine an appropriate level of detail and there is typically no need to model every single component.
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