Officially identified as Column 1001-B, the steel beam, one of 47 that held up the South Tower, was quickly plastered with Mass cards, rosary beads, flags, photos of missing innocents, letters from ...

The design of structural bridge elements like columns, beam-column joints, and cap beams has changed tremendously over the past 30 years. Many experimental tests have been done in order to determine ...

A new method of connecting precast beams and columns will make it possible to quickly repair concrete buildings damaged by extreme events such as earthquakes and hurricanes. The patented technology, ...