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Jan
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Visual Landscape Theory
Filed Under theory of architecture
The Aesthetic Landscape Theory about Visual, Yoshinobu Ashihara
D/H and W/D Proportions of the Townscape
An important aspect of townscape composition depends on the ratio of street width to building height. These proportions, using D for the distance between buildings on both sides of the street, and H for the height of the adjacent buildings.
When D/H < 1, the space grows crowded and cramped
When D/H = 1, a balance is achieved between height and distance
As D/H grows larger, the space becomes more open
Bird’s-Eye Views and Curvilinear Landscape
One of the charms of a city landscape is its overlooks and the opportunities they provide for panoramic views. In his research on visual perception, Henry Dreyfuss measured the angle of depression for a person standing is 10 degrees and for a person sitting 15 degrees. The upper boundary of the field of vision is 50 to 55 degrees, and the lower is 70 to 80 degrees.
Tadahiko Higuchi found that persons standing at both the 150-and 250-meter lookout points felt an angle of from 8 to 10 degrees to be the most comfortable.
Concave and convex
In the case of a concave, curved landscape, the water circumscribed by the shoreline and the manmade landscape of a city or port both enter the field of vision, augmenting the aesthetic appeal of the scene.
In a convex landscape the land juts out into a body of water, and there is no boundary circumscribing the water that surrounds it, so the line of vision is continually directed outward, diminishing the sense of intermingled natural and manmade landscape.
from the book of “ Aesthetic Townscape“ (MIT Press, 1984), also read related article about The Aesthetic Townscape Theory
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Few people honestly understand the importance in knowing landscape design and real methodologies. Landscape architects go through the same amount of schooling as residential and commercial architects for a reason.