Wire Fences The principle of wire fences is that they are supported mainly by tension, being stretched between heavy strutted or guy-wired posts at ends, corners, and ideally at intervals in longer stretches (every 50 to 300 metres, 150 to 1000 feet). Between these braced posts are additional smaller wooden or
The general types of raised floors in telecommunications data centers include: stringerless, stringered, Stringerless raised floors — an array of pedestals that provide the necessary height for routing cables and also serve to support each corner of the floor panels. Stringered raised floors — a vertical array of steel pedestal assemblies
The general types of telecommunications data centers include: structural platforms and, truss assemblies. Structural platforms — members constructed of steel angles or channels that are welded or bolted together to form an integrated platform for supporting equipment. Truss assemblies — utilizing attachment points to the subfloor to support a
Synthetic Fence Synthetic fences encompass a wide range of products. Vinyl-coated wire fence is usually based on high-tensile wire with a vinyl coating. Some forms are non-electric, others embed layers of graphite to carry a current from the wire to the outside of the coated product so that it can be
Barbed Wire The Industrial Revolution brought the first barbed wire (also barbwire or just barb) fences, which were widely used after their introduction in the mid-19th century. This technology made it economically feasible to fence rangeland for the first time. In the United States, introduction of barbed wire contributed to the
Sliding door (car) : A sliding door is a type of door is mounted on or suspended from a track for the door to slide, usually horizontally. It is a feature predominately relegated to minibuses and buses to provide a large entrance or exit for passengers without obstructing the adjacent pathway
Raised Floor In the U.S., underfloor air distribution is becoming a more common way to cool a building by using the void below the raised floor as a plenum chamber to distribute conditioned air, which has been done in Europe since the 1970s. In data centers, isolated air-conditioning zones are often
High Tensile Wire High tensile (H-T or HT) fencing is a special hard, springy steel wire that was introduced in the 1970s and has slowly gained acceptance. The wire may be a single strand plain or barbed wire, or woven mesh, and is capable of much higher tension than mild steel.
Door types There are many types of door hinges. The main types include: Spring hinge a spring-loaded hinge made to provide assistance in the closing or the opening of the hinge leaves. A spring is a component of a hinge, that applies force to secure a hinge closed or keep a hinge opened. Barrel
Spacecraft People have developed a variety of self-actuating, self-locking hinge designs for spacecraft deployable structures such as solar array panels, synthetic aperture radar antennas, booms, radiators, etc.
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