How to model identical areas
Most structures contain identical areas, from simple frames to entire floors. Save time by modeling these areas once, then copying them throughout the model. For example, create a column with a base plate and cap plate, then copy the column to all the locations where it occurs in the model.
You can use this technique to create and reproduce any identical area. Depending on the project, you may even be able to add connections before copying the area of the building.
Tip:
For a project that has several identical floors, try modeling an entire floor, then copying it to several levels.