Patent ID: 7581363

Claim:
A structure having a main horizontal axis and a perimeter, comprising: a substructure including a drive aisle and a plurality of automobile parking spaces and comprising a plurality of parallel, adjacent, poured-in-place tunnels, each tunnel extending from the main axis to the perimeter of the structure, each tunnel including a transverse drive aisle opening therethrough, said substructure including: a plurality of first tunnel walls having a first length, said drive aisle openings in said first tunnel walls being wider than the drive aisle openings in other tunnel walls and being wide enough to span an automobile parking space that is perpendicular to the drive aisle in addition to said drive aisle; and a plurality of second tunnel walls having a second length; and a plurality of automobile parking spaces defined in the structure formed by said tunnels, said parking spaces being configured such that a set of three adjacent tunnels includes at least four automobile parking spaces; an interface level comprising a plurality of parallel, adjacent, poured-in-place tunnels, said interface level including: a plurality of third tunnel walls vertically aligned with said first tunnel walls and having a third length, said third length being at least as great as said first length; and a plurality of fourth tunnel walls vertically aligned with said second tunnel walls and having a fourth length; and a superstructure comprising a plurality of parallel, adjacent, poured-in-place tunnels having walls that are each vertically aligned with one of said first and second tunnel walls.