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07/26/2000 Env Bd Packet
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07/26/2000 Env Bd Packet
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Environmental Board
Env Bd Document Type
Env Bd Packet
Meeting Date
07/26/2000
Env Bd Meeting Type
Regular
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• <br />Workshop <br />Figure 3 (above). Identifying secondary conservation areas. <br />Figure 4 (below).ldentifying potential development areas. <br />developments will be unnecessary in the fu- <br />ture; indeed, there will always .be a strong <br />"market for them among avid golfers. How- <br />. iver, conservation subdivisions offer a <br />means of satisfying the yearning for natural <br />vistas and neighborhood open space among <br />'• many home *buyers in the non- golfing ma- <br />' jor'ity of the American public • <br />A FOUR -STEP PROCESS <br />The golf course analogy does notend here, <br />•ee • rr..0 o...$..�s.... u..... <br />however. The same simple four -step meth- <br />odology used for decades by designers of <br />successful golf communities can be used to <br />create highly marketable conservation sub- <br />divisions. • <br />The first step calls for "greenlining" the <br />open .spaces. Greenlined areas consist not <br />only of the unbuildable wetlands, flood - <br />plains, and steep slopes that typically com- <br />' : prise much of the open space in cluster de- <br />velopments, they also include.a substantial <br />amount of the site's relatively flat, dry land <br />that might be managed as woodlands, fields, <br />meadows, village greens, and playing fields. <br />in their general suitability for development, <br />these dry upland areas are similar to the types <br />of land that would otherwise be dedicated to <br />golfers. <br />After identifying the open space that is to <br />be conserved, the next three steps are quite <br />straightforward: locating house sites, align- <br />ing streets land trails), and drawing in the . <br />lot lines. As any experienced site designer <br />could attest, these steps represent a complete <br />inversion of the usual process of designing <br />conventional subdivisions. By reversing the <br />procedures, however, open space becomes <br />the central organizing feature of the devel- <br />opment rather than merely an afterthought. <br />By contrast, in standard checkerboard sub- <br />divisions, the central organizing feature is <br />the linear network of asphalt that we call <br />streets. Herein lies the fundamental differ- <br />ence between subdivisions designed by land- <br />scape architects and ones typically laid out <br />by other professionals such as engineers, <br />planners, and surveyors. • <br />Of course, the skills one learns in engi- <br />neering schools and those emphasized in <br />landscape architecture programs are both es- <br />sential•in producing designs that are pleas- <br />ing and functional. In fact, experience sug- <br />gests that the best subdivisions are designed <br />by multi- disciplinary teams. It could be ar- <br />gued that_ landscape architects .should take • <br />the lead during the initial phases (greenlining <br />and house site location), with engineers as- <br />suming most of the responsibility as the plan <br />proceeds into its detailed design stages. <br />However, good give -and -take collaboration <br />throughout the design process is always to <br />be encouraged. <br />The accompanying set of illustrations, <br />from a site planning handbook called Con- <br />servation Design for Subdivisions: A Prac- <br />tical Guide to .Creating Open Space Net- <br />works, demonstrates how this methodology <br />would be applied to a property typical of the <br />Piedmont region in southeastern Pennsylva- <br />nia, where the Natural Lands Trust assists <br />landowners, municipal officials, and devel- <br />opera in designing land - conserving residen- <br />tial subdivisions. <br />The process begins with two markedly dif- <br />ferent site planning exercises. One calls for <br />sketching a conventional layout — realisti- <br />cally and with minor engineering involve- <br />ment at that point —to demonstrate the maxi- <br />mum yield of the property, given its inher- <br />ent constraints. This yield plan is illustrated <br />Continued on page 52 <br />lanuarvI998 <br />
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