The ARCHICAD Stair generation engine has been improved in several areas:
New Stair Calculation Methods
The “Calculate Length” control includes
•Along Chord: Place stair treads along the walking line so that the tread depth gets measured along a straight line (from the intersection point of the walking line and the leading edge of the tread to the intersection point of the walking line and the trailing edge of the tread).
Fulfills the German standard for straight-segment measurement.
•Along Arc: As of Archicad 25 update, this method uses the new algorithm (like the Chord method) to support additional Stair calculation/construction features.
•Along Arc (Legacy): As a result, and to maintain compatibility during migration, the older method has been renamed to “Along Arc (Legacy)”.
Unlock Baseline for More Flexible Stair Design
Stair flights can automatically stretch or shrink as needed during Stair placement or editing. To enable this, uncheck “Lock Baseline” in Stair Settings. (Not available with “Along Arc - Legacy” Calculation method.)
If you unlock the baseline, flights between turns are automatically selected and unlocked.
This extra flexibility helps you avoid impossible geometrical configurations, yet still places unusual stairs without needing the Solver.
Automatic Landings: Control Landing Geometry
When you set a minimal landing length for automatic Stair landings, you can now choose where to distribute the extra landing length: Landing Start, Landing End, or Equally on both sides.
(Not available with “Along Arc - Legacy” Calculation method.)
To verify the results, turn on the new Stair Landing Calculation Guidelines (View > On Screen Only View Options)
Note: These guidelines are visible only on automatic landings..
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Landing Start |
Landing End |
Equally |
New Tread Symmetry Combinations for all Winder Types
Each of the four winder turning types (Single Point, Two Points, Auxiliary Walking Line, Principal Lines) now supports three options for tread symmetry at or around the winder:
•Turning point: Riser
•Turning point: Symmetric Going
•Turning point: Asymmetric Going (new!): No geometrical restrictions on tread placement along the walking line
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Turning Point: Riser |
Turning Point: Symmetric Going |
Turning Point: Asymmetric Going |