Most of her impact is invisible as she attempts to reduce one of the largest carbon footprints in Chicago — that of Willis Tower ... Beardsley considered structural engineering but landed ...

A plan to wrap the lower three levels of Chicago’s Willis Tower with an addition ... While some upgrades to the tower such as an updated elevator system and the creation of a new 33rd floor ...

In renderings, the revamped tower looks like a big guy cut off at the ankles. Designed by Chicago architects Skidmore, Owings & Merrill, Willis’s design was based on a structural innovation ...

Those who take an elevator ride up to the 103rd floor of Chicago's iconic Willis Tower ... necessary upgrades to the structural, mechanical, electrical and plumbing systems. Aside from the actual ...

Here’s some background information about Willis Tower, formerly the Sears Tower ... One of the first major buildings to have a sprinkler system. 1970 - Construction begins.

We’ve also used the Council’s definition for steel towers, where the main construction vertical and lateral structural elements and floor systems are constructed from steel. As the construction ...

This summer, Sears Tower will have a new face to match its new name. Although Chicagoans are less than thrilled about Willis Group Holdings ... of four laminated, structural-glass modules that ...

One of the first major buildings to have a complete sprinkler system ... 2009 - The owners of the Sears Tower announce that the building will be renamed Willis Tower, after new tenant Willis ...