Patent ID: 7540120
Filing Date: 2009-06-02
Classification: E04H

Abstract:
1. A multi-level building system comprising: a plurality of vertical sections, wherein each vertical section includes at least one pair of first and second apartments and wherein the first apartment of the pair is rotated 180 degrees in plan, in relation to the second apartment of the pair, and about a public corridor; a vertically extending stair support wall assembly in each of the first and second apartments, respectively, of the at least one pair, wherein each of the stair support assemblies includes first and second opposing major faces and first and second opposing lateral faces, wherein the first lateral face faces a wall of the public corridor through which the apartment is entered, wherein the first lateral face is spaced from the entry wall of the public corridor for permitting passage between the entry wall and first lateral face; wherein each of the first and second apartments includes first, second, third and fourth levels of function space connected by a stairway system coupled to the stair support assembly; and wherein the stairway system comprises: