Editing

Modify your structural model with these editing operations.

Undo/Redo

  • Ctrl+Z - Undo the last action
  • Ctrl+Y - Redo the last undone action

The undo history is preserved until you close or reload the page.

You can also use the Undo and Redo buttons located in the top left corner of the screen.

Delete

Select items and press Delete to remove them:

  • Deleting a node also deletes all connected members
  • Deleting a member leaves the nodes intact

Alternatively, right-click on the selected items and choose Delete from the context menu.

Move

  1. Select the items you want to move
  2. Press W to enter Move mode
  3. Click to set the base point
  4. Click again to set the destination, or enter coordinates

You can also activate the Move tool by clicking the Move button in the left toolbar.

Intersect Members

If two or more members intersect, we can select them and create nodes where they cross:

  • First, select the members that are intersecting
  • Press X
  • You can also right-click and select Intersect from the context menu.

Loads on affected members are automatically redistributed across the new segments. Section, material, and design properties are inherited by the new segments.

Split Member

Split a member at its centre point, creating a new node:

  1. Select the member(s) to split
  2. Press B
  3. You can also right-click and select Split at Midpoint from the context menu.

Loads on affected members are automatically redistributed across the new segments. Section, material, and design properties are inherited by the new segments.

Divide into Segments

Divide a member into equal-length segments (up to 12):

  1. Select a member
  2. Right-click and select Divide into Segments from the context menu
  3. Enter the number of segments (2–12)

Loads on divided members are automatically redistributed across the new segments. Section, material, and design properties are inherited by the new segments.

Generate Arc

Convert one straight beam member into a circular arc made from straight member segments:

  1. Select one beam member
  2. Right-click and select Generate Arc from the context menu
  3. Choose the number of intermediate nodes
  4. Set the arc by radius or chord deviation
  5. Choose the arc plane and side, then click Generate
  • The arc plane list disables planes that cannot contain the selected member.
  • Side is relative to the member direction from its start node to end node: positive side follows the selected plane normal crossed with the start-to-end member direction.
  • In radius mode, the radius is automatically raised to at least half the member length.
  • Radius and chord deviation use the active length unit setting.
  • The original member is replaced by the generated segment chain, with section, material, fixity, and design properties inherited by the new segments.
  • This is a straight-segment approximation, not a curved beam element. Increase the intermediate node count for tighter curves or when force/result smoothness matters.
  • Existing member loads follow the same stationing approach as Divide Members: percentage loads stay at the same relative station, and metre-based loads are split from the original member stationing then mapped to the generated segment lengths so full-span loads still cover the full segment chain. Review load positions after generating an arc, especially for partial loads and point loads.
  • Local-axis member loads are transferred to the generated segments and therefore use each segment's local axis.

Merge Members

Merge two or more collinear, connected members back into a single member (inverse of split/divide):

  1. Select the members to merge (must be collinear and form a continuous chain)
  2. Right-click and select Merge Members from the context menu

Loads on the original members are automatically repositioned onto the merged member. Interior nodes (and their restraints) are removed. If the selected members have different sections or materials, a warning dialog appears before proceeding - the merged member inherits properties from the first member in the chain.

Edit Properties

Select items and use the Properties panel to modify:

  • Nodes: Edit support conditions
  • Members: Edit section, material, node fixities