Tensile strength is defined as a stress, which is measured as force per unit area. For some non-homogeneous materials (or for assembled components) it can be reported just as a force or as a force per unit width.
Answer Wiki. The practice of organizing to aggregate individuals' influence for economic reasons probably began with European craft guilds, although the master craftsmen were actually employers and capitalists. Trade unions or labor unions originated in England in the 1700s, but were outlawed until the 1800s.
The union was created in April 1881, by Peter J. McGuire and Gustav Luebkert. The two men organized groups for collective bargaining, and started a newspaper called The Carpenter to facilitate their idea of a national union. The Brotherhood held its first convention in Chicago in August 1881.he Brotherhood admitted both black and white carpenters on an equal footing when it was first formed; one of the union's vice-presidents in its early years was L.E. Rames, an African-American carpenter from Charleston, South Carolina.