A Precise Model needs to be documented precisely, with as many “smart BIM solutions” as possible. This means elements that update seamlessly to provide information that is as precise as the model.
Manual text and overwritten dimensions are examples of bad solutions that will make sloppy modeling tell a misleading story. There are rare cases where these are unavoidable, but there is usually a smarter solution.
I have been looking at improving our template with as many smart BIM elements as possible. Today I took a look at labels and annotating RCP’s. The new AC19 label types include a label for annotating the elevation of ceiling slabs. Since our RCP’s are created from 3D documents, this ties the bottom or finish surface of the slab to its home story.
I tested this out in a few projects. We can get this label to graphically appear similar if not identical to our current text over RCP solution. With this label, not only does the annotation link to exactly what is modeled, ensuring precise modeling, but it updates with design changes, making it a smarter BIM solution.
In the project above, I tested this out and actually found a discrepancy between the intended ceiling height and the actual modeled ceiling height. This is a clear example of the benefit of a smarter solution.
There are limits to this label. It only works on slabs, so vaulted ceilings will still need text for now. It also does not work where a home story includes a split level, as this label can only reference a slabs height to home story or height to project zero.
But if the design has single level floor plans with flat ceilings, this is a smart BIM solution. I will be adding this label to our favorites soon, but it can be used out of the box with a few minor graphic adjustments for prefix/suffix content and pen/fill settings.