What are the principal advantages of using a single building information model of the existing conditions as the foundation for modeling proposed additions or renovations?
Using one building information model keeps everything connected and consistent. It makes it easier to coordinate new work with existing structures since all elements reference the same base model. This avoids mistakes that happen when different models get out of sync. It also saves time because you can use the same geometry and data for analysis instead of starting from scratch. Overall, it keeps the workflow more efficient and transparent across design phases.
What are the principal advantages of using a single building information model of the existing conditions as the foundation for modeling several proposed design alternatives for a portion of the building?
A single model makes comparing options much faster. You can test multiple design ideas side by side while keeping everything aligned with the same building geometry. It avoids version control issues and lets you visualize how each alternative interacts with the rest of the project. Updating or switching between options also becomes smoother since all the data and references live in one place. It helps decision making because everything stays organized and measurable.