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readingnote's - I Functional Uses of Landform A Spatial...

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I. Functional Uses of Landform A. Spatial Definition Space may be created by excavating into the existing base plane, filling (adding) earth and building up from the existing base plane, complementing existing convex landforms with added high points, or changing elevation to establish terraces or level variations. When defining exterior spaces: 1. The floor area of the space The bottom or base plane of the space Blends into the side slopes 2. The steepness of the enclosing slopes Affects our sense of space The steeper the slope the more pronounced the delineation of the space 3. The horizon/silhouette line Influence the special perception, represents the edge between the top of landform and the sky The upper edge of the slope/rim of space Defines limits of space All three above variables interact with one another to enclose space A sense of full spatial enclosure occurs when a landform mass fills a 45 degree cone of vision Spatial limits: The perception of space and its limits changes as one moves from one location to another Landform are used to direct views to a desired point in the landscape (lower hill on one side and higher on another) Spatial orientation tends to move downhill, like water, to lower ground. As a result, space will orient and focus itself on the area of the lowest floor elevation. B. Control Views Landform can be used to direct, block or create illusion The steeper the lopes the more the object become like vertical walls and the more they directly stop and capture attention Landform is to establish spatial sequences that alternately reveal and hide views of object is referred to as “sequential viewing” or “progressive realization.” E.g. walking toward the hilltop crest would cause the object to disappear while reappear in distance (see images) Tilted slope is able to easily display the elements on it to viewers Earth mound partially conceals attractive object and there establishes a feeling of anticipation Examples of hidden usages of landform: 1. Ha-ha walls Placed below the slop in valleys and depression so they can not be seen from certain vantage points 2. Military crest
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Ground is on the highest of all surrounding, then hiding behind the tilted slope would cause you to blend and hide from the background Serves as “protection” C. Influence Movement Landform may be used in the exterior environment to influence the direction, speed, and rhythm of both pedestrian and vehicle movement. As slope of the ground surface increases movement becomes more difficult; should be on level landforms When allowed, circulation should occur parallel or askew to contours, not perpendicular (see image) To cross a ride, circulation is easiest through a gap or saddle (see image).
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