This thesis concerns the design of a narcotics center located within a city block. A specific site was purposely avoided; instead, a particular "field condition" was chosen. This condition specifies a fifty-by-one-hundred-foot lot occupying a complete cut through a city block; thus it would be confined on the north and south sides by a fifty-foot street frontage, and on the east and west by residential units five stories high and fifty feet in depth from the north and south boundaries.