Which building information is best conveyed in 3D, and which still requires 2D?
◦ Which stakeholders need 2D drawings, and why has that not gone away?
◦ Give an example of something in your building a 3D view fails to communicate.
The best information to be conveyed in 3D is coordination with multidisciplinary elements. It lets you see where things fit relative to everything else quickly. But 2D drawings provide more detail more clearly. The stakeholders that place any element into a building model need 2D drawings. People like structural engineers or electrical engineers that need to know the coordinates and lengths in one dimension at a time will want 2D drawings. It would be very hard to know exactly where something is located in a 3D image because it can’t show 3 dimensions of everything visibly and neatly.
The same location needs to be shown differently to different audiences.
◦ How would information at one spot be filtered for a client, a contractor, a code official and a fabricator?
◦ What is the risk of showing everyone the same view?
For a client, they’d likely only want to see the architectural side of the drawings. This means no structural elements, no wiring, no plumbing, just the look and space. The contractor wants the structural elements so they can build it. They don’t want the MEP to block their view of what they are focused on building. The code official likely wants to see everything, but not all at once. They can check all the architectural components alone, then the structural, then the other disciplines. The fabricator does not want the location. They just want a drawing of the elements they need to fabricate. Showing everyone the same view clutters the drawings so each team can’t find the information they need to do their job.
View templates enforce consistency across a set.
◦ What goes wrong on a real project when views are configured individually?
◦ Who should own the templates and standards, and why?
When views are configured individually, people may assume they have been standardized and misinterpret drawings. For example, they might think they’re all the same scale, and think an object in one drawing is bigger than an object in another drawing even if they’re the same size, but look different in the drawings. There should be one leader of each discipline, but ultimately the architect brings them together, so they should set the initial templates and standards.
Your schedules pull information straight out of the model.
◦ How can schedules support procurement and model based estimating?
◦ What is the danger of a schedule that is accurate about the model but wrong about the building?
◦ What did your calculated field reveal that the plans did not?
You published two versions and compared them.
◦ Why does version history matter more on a shared model than a personal one?
◦ If a consultant says their work was based on last week's version, what do you need to be able to tell them?
◦ When should a model be formally issued rather than just saved?