Standard Cell Rows

The area allotted for standard cells on the core is known as standard cell area. This area is divided into the rows known as standard cell rows as shown in the below figure

The height of this row is equal to the height of the standard cell. In digital designs most of the cases, the height of standard cells are constant and width varies. There may be double height cells , triple height cell, etc. Similarly the rows also have heights accordingly. The standard cells will sit in the row with proper orientation.
The rows may abut or may not. The abutted rows share the power connections