Pipes in your system will have a C-Factor to help determine this loss. This is a measure of the roughness of the interior of the pipe that creates this friction. Different types of piping will have a different C-Factor, and the higher the C-Factor, the smoother the pipe.
A motif is a literary term that is an idea, object, or concept that repeats itself throughout a text. A motif gives clues to theme or reinforces ideas an author wants to emphasize. A motif generally reinforces the theme of the text. A motif must be repeated throughout a text to be considered a motif.
The Motif Style Guide, which describes how to conform to the guideline, is published as an industry standard (IEEE 1295, orderable from the Institute of Electrical and Electronics Engineers ). Motif is the base graphical user interface toolkit for the Open Group's Common Desktop Environment (CDE).