The team looked at other options for framing roofs, and it settled on a design that uses wide-flange steel beams — a different framing application that is often used to construct elevated floors ...

The design team planned to offset the impact of thinner beams by adding more steel columns, according to notes on construction documents from the spring of 2018. But plans dated Oct. 11 ...

San Francisco officials have temporarily shut down the city's huge new transit center after a crack was spotted in a steel beam in the ceiling ... It has a futuristic design, with a bulbous ...