Formwork for concrete walls专利检索-模板面板建筑材料专利检索查询-专利查询网

Formwork for concrete walls

阅读：385发布：2023-07-25

专利汇可以提供Formwork for concrete walls专利检索，专利查询，专利分析的服务。并且There is disclosed a building system utilizing steel joists spaced apart by spanner bars which also support rigid panels which act as formwork for the pouring of concrete. The spanner bars and the joists are so arranged to cooperate that the spanner bars may be removed together with the rigid panels after the concrete has been poured, and the spanner bars, the rigid panels and if desired the steel joists may be reused for formwork for additional poured concrete construction. Alternatively the joists may be left in place either with top chords embedded in the poured concrete to provide a composite action, or merely supporting the concrete slab in the conventional fashion. A novel cold rolled sheet steel joist may be advantageously used to form a particularly economical composite system. This steel joist is shaped in an I-beam configuration with an upper top chord bent to have the appearance of the letter Z in cross-section for bonding with the concrete floor.，下面是Formwork for concrete walls专利的具体信息内容。

权利要求

1. In formwork for constructing concrete walls the improvement comprising: a plurality of tapered, vertically extending open web steel joists each having an inner chord, an outer chord and a tapered open web of serpentine form spacedly joining said chords with said inner chord vertical and said outer chord sloping inwardly from its base to join said inner chord at its top, said inner chord having a flat inner surface for receiving wall forms and having an outwardly extending flange with a plurality of vertically elongated vertically spaced openings for receiving removable spanner bars to brace said wall forms, each of said spanner bars being an elongated steel bar formed of material having a generally rectangular transverse cross section and having pairs of wide and narrow faces and opposite ends, a notch in a narrow face of said bar adjacent each end thereof, said vertically spaced openings in the outwardly extending flange of said inner chord being shaped to permit entry of an end of a spanner bar therein with the wide faces of said spanner bar vertical, said notches being of a depth sufficient to permit rotation of said spanner bar about a horizontal axis extending longitudinally of the spanner bar, to engage the material of said outwardly extending flange surrounding a vertically extending opening when the spanner bar is rotated to a position with its wide faces horizontal, said spanner bar thereby being locked to said steel joists to maintain the spacing between adjacent joists and to support wall forms positioned adjacent said joists.

2. Formwork as in claim 1 and further including: a second plurality of tapered, vertically extending open web steel joists like the first plurality in that claim with each joist supporting a plurality of said spanner bars and walls forms as aforesaid and disposed with the respective wall forms spacedly facing each other, and means bracing the opposite wall forms and joists a predetermined distance apart whereby the space between the wall forms can be filled with concrete.

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Formwork for concrete walls

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