Used to identify pipe and fitting sizes in plumbing. Refers to the inside diameter of the pipe which can vary by thickness of the pipe. The outside is a constant size. For copper pipe the outside diameter is always 1/8 larger than the nominal size. Example: 1/2 nominal is always 5/8.
Competency-based learning or Competency-Based Education and Training is an approach to teaching and learning more often used in learning concrete skills than abstract learning. It differs from other non-related approaches in that the unit of learning is extremely fine grained.
In the United States, competency involves the mental capacity of an individual in order to participate in a legal proceeding or his ability to exercise his liberty and pursue his interest. Competence also pertains to the capability of an individual's state of mind to make decisions that involve his interests. Competency is presumed unless there exists a reason to declare a person as mentally incompetent. There are several factors that would affect an individual's competency to make a particular decision, a particular contractual agreement, to execute an effective deed to real property, or to execute a Will.