In addition to and in aid of the purposes set forth in §§
164-1 and
164-86 of this chapter, the intent of this article is to permit a more varied, more efficient and more economical development pattern in the R-1 Residence District by permitting a reduction in lot requirements for single-family residential subdivisions, while maintaining the permitted density of dwelling units within the subdivision area and preserving the area thereby gained as open space, tree cover, playground, park or school areas, scenic vistas or historical sites for the benefit of the residents of the Township of Lower Salford in the promotion of their health, safety, morals and general welfare.