Patent ID: 8109691
Filing Date: 2012-02-07
Classification: E01C,E04B,E04G

Abstract:
1. A method for pouring a pre-stressed concrete structure in the field, comprising the steps of: a. providing a form in the field, said form defining a shape and a size for the structure, said form having opposing elongated sides and opposing first and second bulkheads transverse to said sides, said form having an upper edge defining an upper surface for the structure; b. providing an elongated cable pre-stressing frame, said frame having a first end and a second end, and said frame including at least one pre-stressed cable extending from said first end to said second end, said cable passing through said first and second bulkheads; c. positioning and maintaining said pre-stressing frame over and generally in longitudinal alignment with said form, with said at least one pre-stressed cable lying below said upper edge of said form; d. pouring concrete into said form entirely covering said cable, and allowing said concrete to cure; e. detaching said at least one cable from said first and second ends of said pre-stressing frame; f. removing said pre-stressing frame from its location over said form; and, g. removing said first and second bulkhead from the ends of the concrete structure.