Patent ID: 8650819
Filing Date: 2014-02-18
Classification: E04C

Abstract:
1. A beam or girder, comprising: cast concrete using a set of forms to determine a shape of the beam or girder, said beam or girder having a shape that comprises a web having a top, a bottom, and two ends, said web having an enlargement at a top of said web of the beam or girder; one or more pre-tensioning strands passing through the concrete; one or more semi-flexible post-tensioning ducts passing through the concrete; and one or more post-tensioning anchorages, said enlarged web accommodating said one or more post-tensioning anchorages for applying one or more post-tensioning forces at selected points along a length of the beam or girder between said two ends, whereby expensive enlargements or end blocks at beam or girder ends are unnecessary.