It defines and groups a project's discrete work elements in a way that helps organize and define the total work scope of the project. Worker - a person engaged in the accomplishment of work. In cost estimating, the hands-on workers contribute to the production and are counted in calculations of the production rate.
Crossbowman cocking an arbalest. The arbalest (also arblast) was a late variation of the crossbow coming into use in Europe during the 12th century. A large weapon, the arbalest had a steel prod (bow). Since the arbalest was much larger than earlier crossbows, and because of the greater tensile strength of steel, it had a greater force. The strongest windlass-pulled arbalests could have up to 22 kN (5000 lbf) of force and be accurate up to 100 m.
Share images and more online. Pinterest is a fun social photo sharing service that you can now access on the Pokki platform on your desktop. View full description. PROS. Easy to use. Follow and repin friends' pictures you like. Organize your pictures on pinboards.