Creating Floor Decks on Level Two: A Step-by-Step Guide in Revit

At level two, the interface appears noticeably different from what we've been working with—and there's a good reason for that. We've only performed the basic step of jumping in and pasting the doors without adding the finishing touches like dimensions or detailed annotations. This streamlined approach is actually strategic: we can always add those elements at the end or efficiently copy them up from level one, saving time during the initial modeling phase.

Before we proceed with the floor construction, let's optimize our workspace. I'm changing the detail level from coarse to medium, which will reveal the individual layers within our wall assemblies. This enhanced visibility is crucial for level two because we're about to construct the floor deck, and we need to see exactly how our floor system will interact with the wall components. This level of detail becomes essential when coordinating between structural and architectural elements.

Now we'll navigate to Architecture > Floor and select the same floor type we used for level one. However, this time we're employing a more efficient methodology. Instead of manually drawing lines, we're using the Pick Walls tool, which automatically extends the floor to the wall's core—specifically to the stud line in our case. This approach ensures proper structural integration and maintains consistency with building standards.

As I select walls around the perimeter, you'll notice we can only pick certain walls initially. This is expected behavior, as we'll need to make strategic edits to achieve our desired floor profile. The initial selection provides our base geometry, but professional-level modeling requires refinement. I'm selecting the primary perimeter walls first, knowing that the resulting profile will need modification to meet our architectural intent.

Here's where the Trim Extend to Corner tool becomes invaluable (keyboard shortcut: TR). This tool allows us to precisely modify our floor boundaries to create the complex geometry required for this design. Notice how I'm adjusting the floor edge to follow the inside face of the wall—this modification is necessary to accommodate the walkway around our double-height opening. These kinds of spatial relationships are critical in multi-story designs where circulation and visual connections between levels must be carefully coordinated.

At this stage, we transition to manual line drawing for the areas that require custom geometry. I'm drawing from the stud line and extending down to just before our planned curtain wall location. This deliberate stopping point prevents potential conflict issues that can arise when Revit attempts to automatically join floors with curtain wall systems. From experience, these automatic joins can create complex geometric problems that are much easier to prevent than to resolve after the fact.

Using the Trim/Extend tools, I'm completing our continuous boundary loop, which will define the exact perimeter of our level two floor system. This methodical approach ensures clean geometry and prevents the modeling errors that often plague rushed projects.

Upon finishing the edit, Revit presents us with two dialog boxes that every professional should recognize immediately. The first contains the key word "attach"—a term that should trigger an automatic response based on our project methodology. When Revit asks whether walls should attach to the floor level, the answer is almost always "Don't attach" during initial modeling phases.

Here's why this matters: our walls are intentionally set from level two with an 8'8" offset. If we allow automatic attachment to the floor bottom, we lose that carefully calculated offset, potentially disrupting our ceiling heights and coordination with MEP systems. Additionally, in this minimal view, we can't see all potentially affected walls, making it impossible to predict every consequence of clicking "attach." Professional practice demands that we maintain control over these relationships, implementing attachments manually when we can fully evaluate their impact.

The second prompt addresses geometry joining between walls and floors at intersection points. This is beneficial behavior that we want to accept. Proper geometric joining ensures clean section cuts and accurate quantity takeoffs, both essential for construction documentation and cost estimating. When we cut sections after completing the roof, you'll see how this geometry joining creates the clean, professional drawings that contractors and consultants expect.

With both dialog boxes resolved appropriately, we've successfully completed our floor systems for both level one and level two. This foundation work sets us up perfectly for the next phase of our building model, where we'll see how these floor systems integrate with our overall architectural design.