Alterations allow recently made kn...

Alterations allow recently made known 18-ft.-high courtrooms to be built in a 30-story federal building in Chicago

Structural modifications made at midheight of a 30-story federal office building in Chicago enabled four novel 1 1/2-story-high courtrooms to be makeed and will permit additional courtrooms to be built with solely minimal structural changes.

The EM Dirksen Building has a typical floor-to-floor height of 12 feet further the new courtrooms, which will be complet this fall, required the same 18-ft height as the building's 20 instant courtrooms. The building has a 28-ft by-28