An outdoor room may be rather open with views extending outward in many directions, partially enclosed on several sides, or totally enclosed with an inward orientation (Figure 2—5). Vertical planes are established by such site elements as the facades of a house, walls, fences, the foliage mass of trees and shrubs, tree trunks spaced close together, and/or steeply sloped ground. views from unattractive features (Figure 2—6). Figure 2-6
Vertical planes may enframe or screen views. Vertical planes may vary from rough to smooth, light to dark, solid to transparent, and so on. Figure 2-4
Vertical planes (landform, walls, fences, and plant materials) are used to provide spatial enclosure. Similarly, vertical planes directly affect views. Vertical planes may be used to direct and enframe views to desirable places or screen
Figure 2-5
A space may have varying degrees of enclosure. Vertical planes define the surrounding edges of a space and separate one space from another.