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Translucent concrete (also: light-transmitting concrete) is a concrete based building material with light-transmissive properties due to embedded light optical elements — usually optical fibers. Light is conducted through the stone from one end to the other. Therefore, the fibers have to go through the whole object.
Sidewalk prisms developed from deck prisms, which were used to let light through the decks of ships. The earliest pavement light (Rockwell, 1834) [16] used a single large round glass lens set in an iron frame. The large lens was directly exposed to traffic, and if the lens broke, a large hole was left in the pavement, which was potentially ...
End posts to which the tensioning hardware attaches must be constructed so that they will not deflect perceptibly. Post spacing: Intermediate posts are posts which provide mounting for the top rail and have a vertical row of holes to support the cable as it passes through them. Since the post to post spacing is a primary driver of cable ...
The lower deck was further divided into three lanes of traffic for heavy trucks (each 10 feet 4 inches [3.15 m] wide), and the two railroad tracks on the south side (27 feet [8.2 m] wide for both tracks). [51] [55] The initial design in 1932 called for the two rail tracks to flank a central truck deck on the lower level. [79]
Staircase railings in the Degré du roi, part of the Petit appartement du roi, in the Palace of Versailles, Versailles, France. Guard rails, guardrails, railings or protective guarding, [1] in general, are a boundary feature and may be a means to prevent or deter access to dangerous or off-limits areas while allowing light and visibility in a greater way than a fence.
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