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Update from Oasys GSA

You are prompted to enter the name of the GWB file from which the Revit model is to be updated.

GSA Layer​

This updates from the selected GSA layer. It’s best to keep this in line with the layer the model was originally exported to.

Notes on the Update Operation​

When updating a Revit Model from GSA:

  • Grid Planes / Levels: Any changes to the elevations of GSA grid planes will reflect as changes in the elevation of the related Revit levels.
  • Grid Lines / Revit Grids: Changes to grid line start point will be transferred.
  • GSA Beam elements/Members related to Structural Columns:
    • Columns can be moved horizontally, but not vertically.
    • Columns can be vertical or slanted.
    • Column lengths can be altered.
    • Orientation can be altered.
    • Revit offsets are changed as necessary to accommodate changes in the elevation of reference levels.
  • GSA Beam elements/Members related to Structural Framing: Beams/Braces
    • Beams can be moved horizontally.
    • Beam lengths can be changed.
    • Orientation can be altered.
    • Revit offsets are changed as necessary to accommodate changes in the elevation of reference levels.
    • Changes in beam orientations can be translated – although this may not necessarily yield useful results.
    • Changes in beam releases can be translated.
  • Element property references: Element property references may be changed but the references must be to properties that are either a. related to Revit family types (i.e. a section that has been exported from Revit to GSA.) An element referring to a “Framing Section” must refer only to other Framing Sections. See ‘Recommended Practice’ OR b. If referencing new section property, the section in question must be imported into Revit as new Family.
  • Sections properties:
    • Newly created section properties can be imported into Revit. A new section can only be referenced by columns or by Framing. If it is referenced by both, it will be ignored for the import.
    • Changes to existing section properties is not reflected in the corresponding Revit Families.
  • Materials: Properties of materials can be edited. However, creating new materials is not allowed since this is not supported by Revit. See ‘Recommended Practice’.

Known Issues​

  • Changes made to GSA 2D members will not be translated, yet.
  • There may be unexpected results while trying to update Revit beam systems, if their coordinates have been changed inside GSA or while updating Revit levels whose elevations have been changed via GSA grid planes that have Revit beam systems defined on them.
  • When a beam is ‘hosted’ on a column or where two or more beams are ‘joined’, changing their coordinates inside GSA may result in unexpected behaviour such as the Revit elements becoming disjointed.