Revit view range explained: how to fix cut plane & view depth clipping.
Master the geometry mechanics behind Primary Range, Cut Plane height, Bottom boundary, and View Depth in Autodesk Revit to eliminate missing elements forever.
01Cut Plane Elevation
Cut Plane Position Relative to Element Height
Elements such as doors, windows, and walls require the view cut plane to physically intersect their geometry to display their full plan representation. If the cut plane is set above high-level clerestory windows or below low sill heights, elements appear clipped or disappear completely.
Recommended Resolution
Verify the default cut plane elevation in View Properties -> View Range. Standard architectural floor plans use 1200 mm (4'-0"). For clerestory windows, use Plan Regions to locally adjust cut elevation without altering whole-floor settings.
Quick Rule of Thumb
Ensure Cut Plane height is strictly between the top and bottom Z-elevation of the target element.
02Bottom vs View Depth
The Critical Distinction Between Bottom Plane & View Depth
The Bottom plane defines the lowest boundary of the Primary Range where elements display in full projection line style. View Depth extends beyond the Bottom plane; elements located between Bottom and View Depth are rendered using the 'Beyond' line style (often light grey or dashed).
Recommended Resolution
If foundation footings or under-slab MEP runs are missing, check if View Depth is set equal to Bottom. Set View Depth to a negative offset (e.g., -1500 mm) to capture underfloor infrastructure.
Quick Rule of Thumb
Confirm View Depth offset is less than or equal to the Bottom plane offset.
03Reflected Ceiling Plans
RCP Orientation Inversion (Looking Up vs Looking Down)
Reflected Ceiling Plans (RCP) look upward from the Cut Plane toward the Top plane. Modeler confusion occurs when placing lighting fixtures or diffusers at elevations lower than the Cut Plane, rendering them completely out of the upward-facing frustum.
Recommended Resolution
In RCP views, ensure the Cut Plane is placed below ceiling-mounted fixtures (typically 2300 mm) and Top plane is positioned above the ceiling plenum level.
Quick Rule of Thumb
Remember: Floor plans look down from cut plane; RCPs look UP toward Top plane.
04Plan Regions
Hidden or Overlapping Plan Region Boundaries
Split-level buildings, sunken living rooms, or elevated mezzanine areas frequently utilize Plan Regions. When another team member hides Plan Region boundaries via 'Hide in View', the localized override remains active invisibly.
Recommended Resolution
Enable 'Reveal Hidden Elements' (the lightbulb icon) to check for invisible Plan Region boundary sketches. Inspect if target geometry falls within a forgotten regional boundary.
Quick Rule of Thumb
Check Visibility/Graphics -> Annotation Categories -> Plan Region visibility.
05Automated Diagnostics
Instant 3-Second Diagnosis with Karo.WhyHidden
Manually calculating whether a non-standard MEP valve, structural framing member, or linked model element falls outside the bounding box frustum takes multiple minutes of cross-section verification.
Recommended Resolution
Karo.WhyHidden automatically reads the element's actual bounding box Z-coordinates, compares them against the view's active View Range parameters, and reports whether clipping is active with a single click.
Quick Rule of Thumb
Run WhyHidden: Point 4 in the diagnostic engine automatically flags view range boundary clipping.
Diagnose all 16 Revit visibility causes in 3 seconds
Don't spend 15 minutes calculating clipping bounds manually. Karo.WhyHidden evaluates view range, filters, worksets, and phases with a single click.