The elements of an array can follow a line (a linear array), or they can follow an arc (a radial array).
Video: Creating Arrays
Note: This video was recorded using Revit. When performing the procedures using Revit LT, you may notice minor differences in functionality and user interface.
When creating an array, you specify the distance between elements using either of the following methods:
Specify the distance between the first and second elements. (Use the Move To 2nd option.) All subsequent elements use the same spacing.
Specify the distance between the first and last elements. (Use the Move To Last option.) All remaining elements are evenly spaced between them.