Todd D Culp

US Patent:

54408458, Aug 15, 1995

Filed:

Oct 6, 1994

Appl. No.:

8/320109

Inventors:

Maher K. Tadros - Omaha NE
David C. Salmon - Omaha NE
Todd D. Culp - Omaha NE

Assignee:

The Board of Regents of the University of Nebraska - Lincoln NE

International Classification:

E04C 226

US Classification:

5230912

Abstract:

To make precast concrete sandwich panels, a first concrete slab is formed having embedded in it one end of connectors which extend from it's surface in two directions with the path between the two containing only thermally insulative material, a layer insulative material is positioned adjacent to a central portion of said connectors to form a solid layer and a second layer of concrete is cast so as to receive the upper ends of said connectors. The connectors provide resistance to shear in at least two directions and include insulative high tensile strength members extending in more than one direction between the concrete slabs.