US 4,437,272 AGranted

Insert for foldable concrete building construction with pivot connections, integral lifting bar, and building height control bar

OwnerDelp W. Johnsoninventor

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Abstract

An insert device cast integrally with the concrete for controlling the articulation of overlying and underlying slabs in Multi Slab Folding Building Construction, wherein the device provides a bar integral with the overlying slab which bar serves as connection for lifting hook used in erecting building and for picking up load of the overlying slab, and an extension of the device into a pocket provided in the underlying slab, engages a pivot in the underlying slab which pivot permits the underlying slab to rotate to a vertical position when the overlying slab is elevated, and the sides of the pocket are formed by short pieces of angle which engage the pivot, and in addition the angles are welded to bars extending from the angles to weld plates located at the base edge of the wall. After the building has been elevated, the angles and weld plates in the wall are welded to anchor plates provided in the roof and floor slabs to provide structural continuity from lower floor through the insert device to the upper slab above, where the sequence is continued the full height of the building.

Claims9

Dependent claims

An insert device for hingeably connecting an overlying ceiling slab to an underlying wall slab in folding slab constructed buildings, which device, simultaneously with a lifting operation, articulates a supporting anchor located at the top edge of said wall, into position to receive a bearing anchor in said ceiling slab, and the portion of said device within the thickness of said ceiling slab, transfers the vertical loads from upper modules to lower modules in said building, said device comprising:

a flat bar extending vertically through said overlying ceiling slab, down into a clearance notch in the hinged edge of said underlying wall slab, said flat bar positioned perpendicular to and adjacent to said hinged edge;
and in addition, a shaped bar extending through the upper portion of said flat bar, said shaped bar extending horizontally thru said flat bar, and thence downward from sides of said flat bar to a location near the lower surface of said overlying slab;
and said shaped bar there terminating in a hook, and said hook engages reinforcing bars in said overlying slab;
and in addition, a pivot bar embedded at the mid thickness of said underlying wall slab, extends thru a vertical slotted hole in said flat bar, and said slotted hole extending downward toward the bottom end of said flat bar, and the overall length of said slotted hole being at least enough to permit said pivot bar to move away from said overlying slab, the distance required to permit the said hinged edge of said underlying wall slab to rotate freely under the lower surface of said overlying slab when said overlying slab is elevated;
and in addition, an access notch is formed in upper portion of said overlying slab, adjacent to said flat bar, and said access notch is of such size and position to provide access to attach a lifting connection to said shaped bar adjacent to said flat bar;
and in addition, at least one support anchor within said underlying wall slab, said support anchor engaging said pivot bar with a slip fit hole, and said support anchor positioned flat against the side of said flat bar, and one edge of said support anchor being coplanar with the said hinged edge of said underlying wall slab;
and said support anchor is secured to at least one reinforcing bar in said underlying wall slab;
and in addition at least one bearing anchor within said overlying ceiling slab, said bearing anchor positioned flat against the side of said flat bar, and said bearing anchor being secured to said flat bar by at least one bar extending thru said flat bar and said bearing anchor;
and one edge of said bearing anchor being coplanar with the lower surface of said overlying slab, and in an erected position, said bearing anchor resting on said support anchor.

6 more elements

An insert device for hingeably connecting an overlying ceiling slab to an underlying wall slab in folding slab constructed buildings, which device, simultaneously with a lifting operation, articulates a supporting anchor located at the top edge of said wall, into position to receive a bearing anchor in said ceiling slab, and the portion of said insert device within the thickness of said ceiling slab, transfers the vertical loads from upper modules to lower modules in said building, said insert device comprising:

a flat bar extending vertically through the underlying wall slab, and up part way into the overlying ceiling slab;
said flat bar positioned perpendicular to and adjacent to the hinged edge of said underlying wall slab, and in addition, at least one metal anchor within said overlying ceiling slab extending from the lower surface to the upper surface of said overlying ceiling slab, and said metal anchor being positioned flat against said flat bar;
and in addition, at least one anchor bar extending through said metal anchor and said flat bar within said overlying slab;
and in addition, a shaped bar extending horizontally through the upper portion of said metal anchor, and thence downward from the sides of said metal anchor, to a location near the bottom surface of said overlying slab and there terminating in a hook, and said hook engaging reinforcing bars within said overlying slab;
and in addition, a pivot bar embedded at the mid thickness of said underlying wall slab extending thru a vertical slotted hole in said flat bar, and said slotted hole extending downward toward the bottom end of said flat bar, and the overall length of said slotted hole being at least enough to permit said pivot to move away from said overlying slab, the distance required to permit the said hinged edge of said underlying wall slab to rotate freely under the lower surface of said overlying slab when said overlying slab is elevated;
and in addition, a clearance notch formed around said flat bar within said underlying slab, being of such size to permit said underlying slab to rotate around the lower end of said flat bar when said overlying slab is elevated;
and in addition, an access notch is formed in the upper portion of said overlying ceiling slab adjacent to said metal anchor, and said access notch being of such size and position as to provide access to attach a lifting connection to said shaped bar, adjacent to said metal anchor.

4 more elements

Dependencies are inferred from the claim text.