Form: Divide Selected Shells
The Edit menu > Edit Shells > Divide Shells command divides slab type shell objects that lie in the model datum plane into smaller objects. Select the shell objects to be divided, and use the Edit menu > Edit Shells > Divide Shells command to access the Divide Selected Shells form.
Cookie Cut Floor Objects at Selected Frame Objects and Extend Frames to Shell Edges check box: Divides the selected floor object along the selected straight-frame object. In some cases, the selected frame object may not intersect with the edges of the selected floor object. In such cases, the area of the floor object enclosed by the selected frame objects is divided/cut and the floor area outside the selected frames is removed from the model. Check the Extend Frames to Shell Edges check box to ensure that the entire shell object is divided/cut and remains in the model.
Cookie Cut Floor Objects at Selected Joints at ____ Degrees: Divides the selected floor object along the orthogonal dividing lines that pass through the selected joint. Specify the rotation in degrees of the ”dividing lines” from the global X-Y axes; positive rotations appear counterclockwise when the Z axis is pointing toward you.
Divide Quadrilaterals/Triangles into ___ by ____ Areas: Divides the selected Quadrilateral or Triangular shell object into the number of objects specified for each edge. ETABS adds joints to the adjacent edges, at equally spaced intervals, and then automatically adds the same number of joints along the opposite edges so that dividing lines can be drawn between the opposing joints.
Divide Quadrilaterals/Triangles at: Divides the selected Quadrilateral/Triangle shell object using the following options (these options may be used in combination):
Intersection with Visible Grids: Divides the selected shell object using the visible grid lines as the dividing lines. Use the View menu > Show Grids command to display the grid lines.
Selected Joint Objects on Edges: Divides the selected shell object using the selected joint objects along the shell's edges. If joints are selected on two opposing edges, ETABS will draw dividing lines connecting each pair of joints. If joints are selected on only one opposing edge, ETABS will place joints on the other opposing edge at the same ratio of spacing and draw dividing lines connecting each pair of joints.
Intersections with Selected Frame Objects: Divides the selected shell object using the selected frame objects that intersect the shell’s edges. Dividing lines are drawn from the intersection joint to the opposing edge.
Click the Apply button to complete the edit. When the Apply button is used, the Divide Selected Shells form will remain open until it is closed by clicking the Close button. This allows selection of an additional object(s), to which another edit can be made.
If only one edit is being made to only one set of selected objects, the OK button can be used to both apply the edit and close the form.