Summary: Barriers may also be designed in a more literal sense to provide directional and locational cues Barriers along entry exit ramps could be designed as gateways to neighborhoods incorporating location specific forms and symbols In select areas the wall itself might become a graphic However controlling this usage could pose a problem and result in walls becoming billboards Transparent materials could be used to create windows in walls FigureĀ 35 Strategically placed such windows could function as locational cues In addition windows could be placed to ensure preservation of significant views see MapĀ 1 Using clear materials has some disadvantages The material tends to scratch and get cloudy requiring more frequent replacement In addition birds and other flying creatures may be prone to fly into clear panels However installing decals of prey birds may reduce this problem
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