BOSTON (CBS) — Newly released surveillance video shows the moment steel columns fell like dominoes at a Boston University construction site, taking two workers down with them. If you look closely, you ...

Add Yahoo as a preferred source to see more of our stories on Google. These foot frames attach to the worker’s shoes to make climbing up and down steel columns easier. The patented design allows users ...

A rust-colored steel column salvaged from the debris of the World Trade Center has been moved to its new memorial location, along a forested walkway outside CIA headquarters just outside the nation’s ...

Concrete-filled steel tubular (CFST) columns represent a mature yet evolving area of structural engineering. By encasing concrete within a steel tube, these composite members harness the compressive ...

SPOKANE VALLEY, Wash. – A steel column from the World Trade Center stands solemnly inside the front doors of the Spokane Valley Fire Department administration building. This column serves as a quiet ...