Convention
Although these conventions are relative and any convention can be used if stated explicitly, practicing engineers have adopted a standard convention used in design practices.
Read more about this topic: Shear And Moment Diagram
Famous quotes containing the word convention:
“By convention there is color, by convention sweetness, by
convention bitterness, but in reality there are atoms and space.”
—Democritus (c. 460–400 B.C.)
“No good poetry is ever written in a manner twenty years old, for to write in such a manner shows conclusively that the writer thinks from books, convention and cliché, not from real life.”
—Ezra Pound (1885–1972)