The lowest or basic strength of aluminum and each of its alloys is determined when the metal is in the annealed or soft condition. This is designated as the O (letter O) temper. For example, the annealed condition for alloy 1145 is written 1145-O.
What is a scissor lift? A scissor lift is a type of aerial work platform used to lift personnel. These platforms extend and retract vertically with the help of the scissor linkages that fold in a crisscross manner. Scissor lifts are typically electrically powered although there are some that are powered by internal combustion engines.
The scissor truss is one of the most commonly recommended kinds of roof truss, usually seen in residential spaces. Roof trusses are used to enhance the stability of commercial and household roof structures. scissor truss is easy to maneuver, combining the stability of a conventional roof truss along with flexible framing. Among other roof truss options, roofing fillers are often added to fill in the gaps between the roof structure and the truss' frame. Such gaps are not found on scissor trusses.