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  2. List of companies in the Chicago metropolitan area - Wikipedia

    en.wikipedia.org/wiki/List_of_companies_in_the...

    The Chicago metropolitan area – also known as "Chicagoland" – is the metropolitan area associated with the city of Chicago, Illinois, and its suburbs. [2] With an estimated population of 9.4 million people, [ 3 ] it is the third largest metropolitan area in the United States [ 4 ] and the region most connected to the city through geographic ...

  3. Lustron house - Wikipedia

    en.wikipedia.org/wiki/Lustron_house

    Led by Chicago industrialist and inventor Carl Strandlund, who had worked with constructing prefabricated gas stations, Lustron offered a home that would "defy weather, wear, and time." [2] Strandlund's Lustron Corporation, a division of the Chicago Vitreous Enamel Corporation, set out to construct 15,000 homes in 1947 and 30,000 in 1948. [1]

  4. Chicago Metallic Corporation - Wikipedia

    en.wikipedia.org/wiki/Chicago_Metallic_Corporation

    Chicago Metallic Corporation (founded 1893) is a global provider of architectural building products and service - including metal panels and ceiling system, suspended grid systems, and acoustical and sustainable ceiling panels. The company was noted by the Chicago Tribune as “one of the largest global manufacturers and suppliers of roll ...

  5. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Curtain wall (architecture) - Wikipedia

    en.wikipedia.org/wiki/Curtain_wall_(architecture)

    Curtain walls may be designed as "systems" integrating frame, wall panel, and weatherproofing materials. Steel frames have largely given way to aluminum extrusions. Glass is typically used for infill because it can reduce construction costs, provide an architecturally pleasing look, and allow natural light to penetrate deeper within the ...

  7. Pittsburgh-Des Moines Steel Co. - Wikipedia

    en.wikipedia.org/.../Pittsburgh-Des_Moines_Steel_Co.

    It operated from 1892 until approximately 2002 when its assets were sold to other companies, including Chicago Bridge & Iron Company. [1] [2] [3] The company began as a builder of steel water tanks and bridges. It also later fabricated the "forked" columns for the World Trade Center in the 1960s, [1] and was the steel fabricator and erector for ...

  8. Braced frame - Wikipedia

    en.wikipedia.org/wiki/Braced_Frame

    OCBF steel frame buildings originated in Chicago and reinforced concrete frames originated in Germany and France – areas where earthquakes were not an engineering consideration. [1] Accordingly, special concentrically or eccentrically braced frames were later developed with extensive design requirements, and are frequently used in areas of ...

  9. Tube (structure) - Wikipedia

    en.wikipedia.org/wiki/Tube_(structure)

    By 1963, a new structural system of framed tubes had appeared in skyscraper design and construction. Fazlur Rahman Khan, a structural engineer from Bangladesh (then called East Pakistan) who worked at Skidmore, Owings & Merrill, defined the framed tube structure as "a three dimensional space structure composed of three, four, or possibly more frames, braced frames, or shear walls, joined at or ...