Abstract: An apparatus and method for coupling separate series or stacks of structural or shear walls of a multistory building are disclosed. The method comprises constructing a plurality of stacks of shear walls and attaching a rigid coupling member to the top of at least two of the stacks of shear walls between the stacks such that the walls are connected to the rigid coupling member and move together with the coupling member. The apparatus is a rigid coupling member, which may be a beam, such as an I-beam or rectangular beam, made from poured concrete and reinforcing steel. The coupling member may also be a wall of poured concrete and reinforcing steel. The attached rigid member acts to connect the tops of independent stacks of shear walls typically used to build multistory buildings, thereby creating a flexural moment at the top of the building that helps the building resist lateral loads.

Abstract: A multistory concrete building formed entirely of poured in place concrete tunnels and method of making same. The structure is constructed so that the substructure can be used as a parking garage and the superstructure as residential space. The unique use of concrete tunnels in both the substructure and superstructure combines the benefits of column and plate construction with concrete tunnel construction while eliminating the need for a traditional transfer deck between the superstructure and substructure. In one embodiment, the parking structure is constructed from tunnel walls of alternating lengths such that the drive aisle in certain walls can be extended so as to allow additional parking spaces to be formed in the planes of those walls.

Abstract: An apparatus and method for coupling separate series or stacks of structural or shear walls of a multistory building are disclosed. The method comprises constructing a plurality of stacks of shear walls and attaching a rigid coupling member to the top of at least two of the stacks of shear walls between the stacks such that the walls are connected to the rigid coupling member and move together with the coupling member. The apparatus is a rigid coupling member, which may be a beam, such as an I-beam or rectangular beam, made from poured concrete and reinforcing steel. The coupling member may also be a wall of poured concrete and reinforcing steel. The attached rigid member acts to connect the tops of independent stacks of shear walls typically used to build multistory buildings, thereby creating a flexural moment at the top of the building that helps the building resist lateral loads.

Abstract: A structure and method of constructing a multistory concrete building formed entirely of poured in place concrete tunnels. The structure is constructed so that the substructure can be used as a parking garage and the superstructure as residential space. The unique use of concrete tunnels in both the substructure and superstructure combines the benefits of column and plate construction with concrete tunnel construction while eliminating the need for a traditional transfer deck between the superstructure and substructure.