Axis defintion 
Select the method used to define the axis of rotation from the dropdown list:
 Global  select a global axis and a pivot point.
 Two points  specify two arbitrary points to define a rotation axis in any direction.

Axis of rotation 
Select a global axis used for the Global method. 
Arc angle 
Type the arc angle from the initial copy to the final copy.
Note: Positive angles are taken using the "righthand rule" (i.e., measured counterclockwise when looking down the positive angle of rotation). Negative values may be used to rotate in the opposite direction.

Copies 
Type the number of copies to be made along the arc. These will be evenly spaced along the arc (i.e., at Arc angle / (Copies + 1) degrees along the arc). 
Helical height (optional) 
This is the distance parallel to the axis of rotation
to offset the last copy (at the end of the arc angle) from the original
selection. Intermediate copies will be offset by this distance divided by
the number of copies to form a helical arc rather than a planar arc. 
Generation Flags 
Select the structural data that you want copied to the newly generated elements:
 All — Uses all properties assigned to the selected object (e.g., loads, properties, design parameters, member releases, etc.) are copied
 Geometry Only — Only geometry data is copied. That is, nodes, member and element incidences are generated but no properties, loads, etc. will be assigned to the new objects.
 Geometry and Property Only — Only geometry data and property assignments are copied. All other assignments (e.g., loads and design parameters) are not copied.

Link copies 
Instructs the program to generate new members between each step in the direction of the repeat. 
Open Base 
This option instructs the program to not generate linking members at the base of the structure (i.e., the lowest nodes in the selection). 
Axis location 
Click Select to manually identify existing nodes
or grid intersections as the axis rotation. Pick one point for the Global
method or two points for the Two point method. Alternatively, you may type
coordinates for any arbitrary points.
Type the global coordinates used to offset the rotation
axis from the origin for the Global method.
Property  Value 

X 
X coordinate 
Y 
Y coordinate 
Z 
Z coordinate 
Type the coordinates of the first and second points used to define an arbitrary axis.
Property  Value 

X1 
X coordinate of the first point 
Y1 
Y coordinate of the first point 
Z1 
Z coordinate of the first point 
X2 
X coordinate of the second point 
Y2 
Y coordinate of the second point 
Z2 
Z coordinate of the second point 
