Revit Dynamo script: Auto Wall Top Offset as per beam download

Dynamo Script - Auto Wall Top Offset from Beam

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This script sets each selected wall’s top offset to the negative depth of the beam directly above its midpoint, but only for walls whose base level matches the input level.
  • Digital Download
  • Revit Version: 2024
  • Dynamo Build: 2.17
  • Created by: Dinesh Bhansali

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How to Install Dynamo Scripts

1. Open Revit
2. From the Manage Tab > Dynamo
3. From Dynamo click File > Open and choose the dyn. file
4. To Run the script click on the Run button

For more information please visit our download and install instructions page.

Revit Dynamo script: Auto Wall Top Offset as per beam 

This script sets each selected wall’s top offset to the negative depth of the beam directly above its midpoint, but only for walls whose base level matches the input level.

Key Features:

  • Automatic wall–beam alignment: Adjusts wall top offsets so walls finish exactly at the underside of supporting beams, improving clean junctions in sections and 3D views.
  • Level-based control: Processes only walls whose base level matches the selected level, giving precise control over which storey or zone is updated.
  • Smart beam detection: Uses wall midpoints and beam bounding boxes to detect which beam governs each wall, reducing manual picking and coordination errors.
  • Geometry-driven offsets: Calculates beam depth directly from model geometry and applies it as a negative top offset, keeping the wall constrained yet correctly trimmed.
  • Transaction-safe workflow: Runs all modifications in a dedicated transaction, keeping operations reversible and helping maintain model stability.

Inputs Required:

  • Level on which walls are to be modified.

Outputs Generated:

  • Walls automatically match their top offset as per beam depth above them.

Instructions:

  1. Open Revit 2024 with elements modeled.
  2. Launch Dynamo 2.17+.
  3. Select level in the Dynamo Level node on which wall offsets are to be modified.
  4. Run the script.
  5. Verify in Revit (e.g., 3D view) and check Dynamo console for logs.

Notes:

  • Developed by Dinesh Bhansali
  • Once wall offset values are changed, and if beam sizes are modified later, reset wall offsets to zero and re-run the script.
  • Walls with height less than 1500 mm are excluded as parapet walls. This filter can be adjusted within the script.
  • Contact: bhansali1333@gmail.com
  • Single-user license. Purchased via RD Studio.

Compatibility: Revit 2024

Required Dynamo Packages:

This script contains the following custom nodes. If you don’t have the packages, please install them before using the script:

  • Dynamo v.2.18.1
  • IronPython 2
  • RevitAPI (included with Revit)
  • RevitServices (included with Dynamo)

Revit Version: 2024

Dynamo Build: 2.17

Architect and BIM specialist focusing on Revit and Dynamo-based automation for high-rise and complex projects. Passionate about creating efficient, practical tools that improve design workflows and documentation quality.

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