The Fibonacci ratio and associated spiralĪ beautiful example of Fibonacci spirals in False Queen Anne’s Lace An example of a spiral design in the landscape is shown below (last image). A couple examples of the rectilinear usage of this ratio include Dan Kiley’s design for NationsBank Plaza in Tampa, Florida and Lawrence Halprin’s scheme of structural spaces at Riverbank Park, in Flint, Michigan. In many cases, these designs have focused on numbers and rectilinear shapes, although the spiral has also been used in artistic ways. Landscape architects sometimes incorporate Fibonacci proportions in their projects through a variety of means, such as with pavement design, scaling of spaces, and object/plant groupings. This ratio is also very pleasing to the eye, and has therefore been used in various types of design. It can be theorized that many of these patterns have evolved for efficiency: to maximize the number of leaves, seeds, etc., that are exposed to sunlight. The numerical sequence begins with 0, 1, 1, 2, 3, 5, 8, 13, and continues indefinitely – each number is the sum of the two previous numbers (as illustrated in the first image below). Its proportions can be seen in the spacing of joints in the human fingers, the arrangement of seeds in a sunflower, and the spiral of a nautilus shell, for example. I have been fascinated by the Fibonacci ratio, particularly since this pattern occurs so frequently in the natural world.
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