5.14 Because the colony should be technically and culturally independent from Earth and because an environment suitable for children is required, the population should also include teachers, clergy, recreation specialists, counselors, and a variety of maintenance personnel. Beyond these general considerations and requirements, the design of the colony living space is subject to minimum space standards . The desire to make the colony suitable for families and children suggests that the model of a townhouse neighborhood is more appropriate than either a large-lot-suburban or apartment house-hotel-dormitory concept (which options leads to different space minima). This model divides the available space and housing into "units" and allocates one such living unit per family. Living units are subdivided to accommodate persons not in families. To set these units' space minima, the U.S. Department of Housing and Urban Development Minimum Property Standards (1973 edition) for multifamily housing (5.1) provides a place to begin but the isolation of the colony as compared to an in-city housing development with its diverse cultural opportunities suggests that colonists' housing should be much larger than minimum. A 50% increase above H.U.D. standards for housing stock including provision of private "outdoor" space for each unit is considered acceptable with the proviso that furniture and family possessions allowances be large enough to fill these spaces--size of rooms alone does not defeat isolation or introversion. To serve the housing areas, a variety of commercial, recreational, and institutional spaces are required. For example, the community needs places to obtain supplies and health care, to worship, and to attend school. Provision for these spaces can be handled by a general allocation for community facilities of 50% of the H.U.D. housing minimum standard. Table 5.3 compiles the unit housing and community facilities space standards.
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