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Incorporated with the structure and precast therewith is an arrangement of steel tension bars, the principal ones extending from end to end of the truss and engaging the lower edges of the webs. uss 3,398,498 COMPOSITE STEEL TRUSS AND PRECAST CONCRETE SLAB AND BEAM UNITS 2 Sheets-Sheet 1 Filed Sept. 9, 1966 2 Sheets-Sheet 2 \xmsxm xxx I INVINTOR PAUL KRAUSS @g ziw United States Patent F 3,398,498 COMPOSITE STEEL TRUSS AND PRECAST CONCRETE SLAB AND BEAM UNITS Paul Krauss, Winnipeg, Manitoba, Canada, assignor to Barkrauss Enterprises Ltd., Winnipeg, Mamtoba, Canada Filed Sept. The invention consists primarily of a precast concrete slab having a central longitudinally extending concrete member upon the underside thereof and a plurality of downwardly depending, substantially rectangular webs. 52-691) ABSTRACT OF THE DISCLOSURE A composite concrete and steel truss consisting of a reinforced concrete slab or beam with a plurality of downwardly depending webs and a number of exposed steel members.Secondary reinforcing extends from the lower edges of some of the webs, diagonally upwardly into the aforementioned longitudinal member.

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KRAUSS 3,398,498 COMPOSITE STEEL TRUSS AND' PRECAS'I CONCRETE SLAB AND BEAM UNITS Filed Sept. This invention relates to new and useful improvements in composite steel truss and precast concrete slab and beam units.

The steel members incorporated with the concrete slab and webs produce a composite truss unit in which the steel members are the tension chord and tension diagonals and the concrete slab and vertical webs are the compression members.

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