Transfer Loads

Creates Revit loads in the active view. These loads are equal to the vertical reaction-loads of a source subsystem placed above the active subsystem.


SOFiSTiK Analysis + Design allows the user to analyze not only the entire Revit model but also specific parts of it, using the concept of subsystems. Several commands allow the user to account for vertical load transmission between subsystems. The command Transfer Loads is one of these command.


The following steps enable you to transfer the loads:

  1. In SOFiSTiK Analysis Tab ‣ Results ‣ Drop-down Menu: Current System set as Current System the subsystem to which you would like to transfer loads (‘’Target Subsystem’’).

  2. Click SOFiSTiK Analysis Tab ‣ Utilities ‣ Drop-down menu ‣ Transfer loads.

  3. A dialog opens with the Current Subsystem as Target System.

  4. For ‘’Source System’’, select the subsystem from which you want to read the reaction-loads.

  5. In the ‘’Load Natures’’ table, adjust how you want to transfer the loads.

  6. Validate the dialog with OK to create the new loads.

  7. New Revit Point, Line and Area Load instances are created in the view which you can adjust if necessary.


A subsystem can be used as Source Subsystem to transfer Loads if:

  • it is situated above the active subsystem

  • its load cases have already been analyzed

  • it is active as a Source, i.e. the parameter SOFiSTiK_UseForLoadTakeDown of the corresponding Revit view is activated

The ‘’Create Transferred Loads’’ dialog shown above provides three options to adjust how to transfer loads. For each Load Nature, the user can select in the column ‘’Load Cases’’ how he would like to transfer the loads belonging to this Nature:

  • Option Keep Load Case Numbers: the reaction-loads belonging to the Nature are transferred. They are created with the same number and name as in Source System

  • Option Assign new Number to Loads: the reaction-loads belonging to the nature are transferred. They are all created under the Load Case which number and name are input in columns ‘’Number’’ and ‘’Name’’

  • Option Ignore Loads of Nature: none of the reaction-loads belonging the Nature are transferred

Two more columns are available in the ‘’Load Nature’’ table:

  • In column ‘’Self Weight’’, a checkbox is visible if the Load Nature contains the self weight of the Source System. When the checkbox is active, the self weight of column and wall elements present in Revit between the source and the target subsystems is added to the reaction-loads of the Nature.

  • In column ‘’Sum Z Forces’’ the user can check for each Load Nature the total of the vertical reaction forces present in the Source System.


The loads created using ‘’Transfer Loads’’ have a new parameter: SOFiSTiK_LoadHostingSubsystem. There, the Target System of the load is provided. This parameter can be used in combination with Revit filter functionalities to easily hide/display the loads depending on the system shown in the active view.


By selecting the option Ignore Loads of Nature for all Natures and activating ‘’Delete Existing Transferred Loads’’ you can delete all loads created from a previous transfer for the target system.


Currently, the transfer of loads between subsystem does not support user defined subsystem paths. Therefore, if you wish to transfer loads between subsystems, please make sure the parameter SOFiSTiK_SubsystemPath of the Revit views is empty.

See also

Other pages and videos related to this command: