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A logarithmic spiral, equiangular spiral, or growth spiral is a self-similar spiral curve that often appears in nature. The first to describe a logarithmic spiral was Albrecht Dürer (1525) who called it an "eternal line" ("ewige Linie").
The alternating stairs (3) requires one unit of space per step: the same as the half-width stairs (2), and half as much as the full-width stairs (1). Thus, the horizontal distance between steps is in this case reduced by a factor of two, reducing the size of each step.
The U-shaped stair is created with two parallel flights connected by a landing with a 180-degree turn. “This style is striking-looking. The staircase almost becomes a piece of artwork,” says ...
A stairwell or stair room is a room in a building where a stair is located, and is used to connect walkways between floors so that one can move in height. [1] Collectively, a set of stairs and a stairwell is referred to as a staircase or stairway .
The spiral stair is a type of stairway which, due to its complex helical structure, has been introduced relatively late into architecture. Although the oldest example dates back to the 5th century BC, [ 1 ] it was only in the wake of the influential design of the Trajan's Column that this space-saving new type permanently caught hold in ancient ...
The living quarters are oriented around a dramatic spiral staircase, the firm Sanayi313’s key design move. Ibrahim Ozbunar. Outside-the-box thinking has become a calling card for Sanayi313.
The spiral is a frequent symbol for spiritual purification, both within Christianity and beyond (one thinks of the spiral as the neo-Platonist symbol for prayer and contemplation, circling around a subject and ascending at the same time, and as a Buddhist symbol for the gradual process on the Path to Enlightenment).
This allows them to respond to an emergency call faster, as they arrive at the fire engine faster than by using a standard staircase. In the 1870s, answering an alarm, Chicago fireman George Reid decided to use the long-pole the company employed to lift horse's hay from the upper-loft to slide to the ground floor, arriving well ahead of the ...
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