A raised floor (also raised flooring) or access floor(ing) (also raised access computer floor) are types of floor that provide an elevated structural floor above a solid substrate (often a concrete slab) to create a hidden void for the passage of mechanical and electrical services. They are widely used in modern office buildings, and in specialized areas such as command centers, IT data centers and computer rooms where there is a requirement to route mechanical services and cables, wiring, and electrical supply. Raised/Access Flooring can be installed at varying heights from 2 inches (51 mm) to heights above 4 feet (1,200 mm) to suit services that may be accommodated beneath. Additional structural support and lighting are often provided when a floor is raised enough for a person to crawl or even walk beneath.
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, as has been done in Europe since the 1970s.
Read more about Raised Floor: Design, Panel-lifter, Structural Problems, Cooling Load Implications, Telecommunications Data Center Applications
Famous quotes containing the words raised and/or floor:
“Flowers ... that are so pathetic in their beauty, frail as the clouds, and in their colouring as gorgeous as the heavens, had through thousands of years been the heritage of children—honoured as the jewellery of God only by them—when suddenly the voice of Christianity, counter-signing the voice of infancy, raised them to a grandeur transcending the Hebrew throne, although founded by God himself, and pronounced Solomon in all his glory not to be arrayed like one of these.”
—Thomas De Quincey (1785–1859)
“Because humans are not alone in exhibiting such behavior—bees stockpile royal jelly, birds feather their nests, mice shred paper—it’s possible that a pregnant woman who scrubs her house from floor to ceiling [just before her baby is born] is responding to a biological imperative . . . . Of course there are those who believe that . . . the burst of energy that propels a pregnant woman to clean her house is a perfectly natural response to their mother’s impending visit.”
—Mary Arrigo (20th century)