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An aluminum fence is a fence constructed primarily out of the element aluminium. Due to the metal’s low density and ability to resist corrosion, it has become a popular choice as lightweight, durable fence and railing structure. Aluminum fencing is used for both commercial and residential use.
The bump gate's self-closing mechanism utilizes one or two cables from the gate's upper crossbar, terminated high on the post. When the gate swings open, the swivel action as the cables wind around the post raises the gate slightly. After the vehicle passes through, gravity causes the gate to swing back into the closed position. Usually the ...
Cattle grid on country road. Cattle grids are usually installed on roads where they cross a fenceline, often at a boundary between public and private lands. [5] They are an alternative to the erection of gates that would need to be opened and closed when a vehicle passes, and are common where roads cross open moorland, rangeland or common land maintained by grazing, but where segregation of ...
When the door is closed, the bolt extends into the hole in the strike plate and holds the door closed. The strike plate protects the jamb against friction from the bolt and increases security in the case of a jamb made of a softer material (such as wood) than the strike plate. Some strike plates have their hole size and placement calculated so ...
From the 45 nm node onward, the metal gate technology returns, together with the use of high-dielectric materials, pioneered by Intel developments. The candidates for the metal gate electrode are, for NMOS, Ta, TaN, Nb (single metal gate) and for PMOS WN/RuO 2 (the PMOS metal gate is normally composed by two layers of metal). Due to this ...
A drawbar is a defensive implement used to secure a door or gate in a medieval or Early Modern building such as a castle, [1] [2] but also churches and townhouses. When drawn across the full length of the door, it prevents the door or gate from being opened. To open the door or gate, the drawbar is pushed into a drawbar slot in the wall.
A bumper that protects vehicle components from damage at 5 miles per hour must be four times as tough as a bumper that protects at 2.5 miles per hour, with the collision energy dissipation concentrated at the extreme front and rear of the vehicle. Small increases in bumper protection can lead to weight gain and loss of fuel efficiency.
Plates protecting the torso reappeared in the 1220s as plates directly attached to a knightly garment known as the surcoat. [2] [1] Around 1250 this developed into the coat of plates which continued to be in use for about a century. [3] [1] True breastplates reappear in Europe in 1340 first composed of wrought iron and later of steel.