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Stub Girders Cut Steel Use

Serial Information: Civil Engineering—ASCE, 1979, Vol. 49, Issue 10, Pg. 70-71


Document Type: Feature article

Abstract:

One innovation in steel building construction, now 10 years old, is the steel stub girder floor framing system. By using a girder that is a composite of steel girder, metal deck and lightweight concrete, the weight of the floor system is cut by as much as 3 lbs/sq ft. An added advantage of the system is that the mechanical ducts can be integrated into the framing system, reducing floor-to-floor height. Because the stub girders act compositely, smaller girders can be used. This leads to a reduction of approximately 25% in the structural steel used in the floor and 15% in the structural cost of the floor system. Approximately 25 buildings have been built in the U.S. using this system and research is underway in Canada and the U.S. to establish design parameters for the system.

Subject Headings: Floors | Steel construction | Plate girders | Steel structures | Structural systems | Steel decks | Girders

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