US3775928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erection method for structural system
Assignee: Descon Concordia Systems Ltd
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Filing: 1972-03-09
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Granted: 1973-12-04
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Expires: 1992-03-09
Abstract
Abstract A structural system includes a building unit comprising at least a pair of spaced apart concrete wall slabs which support a concrete floor slab thereon which is connected directly to the wall slabs by the use of bolting means and tie plates embedded in the wall and floor slabs. The end portions of the floor slab have recesses therein which have tie plates extending across at least a portion thereof. The top portions of the wall slabs have tie plates protruding therefrom. The wall and floor slab tie plates have apertures therein which are aligned to form through holes, the bolting means being connected through these through holes to form a self-supporting building unit. Adjacent building units in the structure share a common wall slab and the adjacent end portions of adjacent floor slabs associated therewith are directly connected to each other and to the common wall slab by aligning the apertures in the associated tie plates to form through holes, bolting means being connected therethrough. A plurality of floor slabs may be supported between a pair of common wall slabs with the end portions of the floor slabs connected thereto as above. Adjacent side portions of adjacent floor slabs have recesses therein which are in communication and which have flat plates having apertures therein extending thereacross. These adjacent side portions are connected to each other by connector plates having apertures therein which are aligned with the apertures in the flat plates to form through holes, a bolting means being connected therethrough. Concrete wall slabs normal to the floor supporting wall slabs may also be provided, such as along the longitudinal axis of the structure, to vertically transfer laterally applied loads such as shear transmitted across the floor slabs which are ultimately connected thereto. In constructing a structure, supporting wall slabs are anchored to the wall or foundation below by bolting, floor slabs are placed thereon and aligned and adjacent side portions thereof directly connected together by bolting, and thereafter end portions thereof are directly connected to the supporting wall slabs by bolting.
Inventors
- 👤 W Dawson
- 👤 M Shemie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:39
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/02; E04B1/04; E04B1/043
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
319 words
A method of constructing a self-supporting building unit which includes at least a first upstanding substantially planar concrete wall slab having a top portion, an opposed bottom portion, a pair of opposed side portions and a pair of opposed end portions; and a first substantially flat planar floor slab having a top portion, an opposed bottom portion, a pair of opposed end portions and a pair of opposed side portions, said wall slab top portion having an upstanding tie plate means protruding therefrom and at least partially embedded therein, said tie plate having an aperture therein; at least one of said first floor slab end portions having a recess therein, a tie plate means extending across at least a portion of one of said first floor slab end portions having a recess therein, a tie plate means extending across at least a portion of said recess and at least partially embedded in said first floor slab end portion said first floor slab tie plate having an aperture therein; said method comprising the steps of placing said first floor slab one end portion on top of said wall slab top portion with said first floor slab bottom portion adjacent said first floor slab end portion in direct bearing load relationship on said wall slab top portion, substantially aligning said tie plates adjacent one another and substantially aligning said apertures so as to create a through hole between said tie plates; and directly connecting said first floor slab end portion to said wall slab top portion by initially threading a bolting means through said thRough hole and tightening said bolting means until said slabs are directly secured in a predetermined position relative to each other with said first floor slab bearing on said wall slab, whereby static load transfer across said first floor slab and down through said wall slab is provided substantially solely by the bearing relationship of said slabs.
Claim 2
Independent Claim
319 words
A method of constructing a self-supporting building unit which includes at least a first upstanding substantially planar concrete wall slab having a top portion, an opposed bottom portion, a pair of opposed side portions and a pair of opposed end portions; and a first substantially flat planar floor slab having a top portion, an opposed bottom portion, a pair of opposed end portions and a pair of opposed side portions, said wall slab top portion having an upstanding tie plate means protruding therefrom and at least partially embedded therein, said tie plate having an aperture therein; at least one of said first floor slab end portions having a recess therein, a tie plate means extending across at least a portion of one of said first floor slab end portions having a recess therein, a tie plate means extending across at least a portion of said recess and at least partially embedded in said first floor slab end portion said first floor slab tie plate having an aperture therein; said method comprising the steps of placing said first floor slab one end portion on top of said wall slab top portion with said first floor slab bottom portion adjacent said first floor slab end portion in direct bearing load relationship on said wall slab top portion, substantially aligning said tie plates adjacent one another and substantially aligning said apertures so as to create a through hole between said tie plates; and directly connecting said first floor slab end portion to said wall slab top portion by initially threading a bolting means through said thRough hole and tightening said bolting means until said slabs are directly secured in a predetermined position relative to each other with said first floor slab bearing on said wall slab, whereby static load transfer across said first floor slab and down through said wall slab is provided substantially solely by the bearing relationship of said slabs.
Claim 3
Dependent Claim
519 words
A method in accordance with claim 1 wherein said building unit includes at least a second substantially flat planar concrete floor slab having a top portion, an opposed bottom portion, a pair of side portions and a pair of end portions, at least one of said second floor slab end portions having a recess therein, a tie plate means extending across at least a portion of said recess and at least partially embedded in said second floor slab end portion, said second floor slab tie plate having an aperture therein; said wall slab top portion having another upstanding tie plate means protruding therefrom and at least partially embedded therein, said wall slab top portion tie plates being spaced apart, said wall slab other tie plate having an aperture therein; at least one of said first and second floor slab side portions each having a recess therein, each of said recesses including a substantially flat plate therein in a given plane and at least partially embedded therein said plates being substantially parallel to said floor slab top portions, each of said plates having at least one aperture therein, wherein said placing step further includes the step of placing said second floor slab one end portion on top of said wall slab top portion with said second floor slab bottom portion adjacent said second floor slab one end portion in direct bearing load relationship on said wall slab top portion and with said second floor slab one side portion adjacent said first floor slab one end portion and with said side portion recesses in communication with each other; said aligning step further includes the step of substantially aligning said second floor slab one end portion tie plate adjacent said wall slab other tie plate and substantially aligning said apertures therein so as to create a through hole between said tie plates; and said direct connection step includes the steps of placing a substantially rigid connector plate means hving a pair of spaced apart apertures within said communicating side portions recesses over said floor slab side portion eportion plates and substantially aligning one of said plate apertures respectively with one of said connector plate apertures so as to create a pair of through holes between said connector plate and said respective side portions plates; directly connecting said adjacent floor slab side portions together by initially threading a bolting means through each of said through holes and tightening said bolting means until said floor slab top portions are substantially aligned and said floor slab adjacent side portions are directly secured in a predetermined position relative to each other; and directly connecting said second floor slab end portion to said wall slab top portion by initially threading another bolting means through said tie plate through hole therebetween and tightening said bolting means until said slabs are directly secured in a predetermined position relative to each other with said first and second floor slabs bearing on said wall slab, whereby static load transfer across said first floor slab and down through said wall slab is provided substantially solely by the bearing relationship of said slabs.
Claim 4
Dependent Claim
49 words
a method in accordance with claim 2 wherein said adjacent floor slab side portions are directly connected together after being placed on said wall slab top portion in bearing load relationship thereon and prior to directly connecting said floor slab one end portions to said wall slab top portion.
Claim 5
Dependent Claim
199 words
A method in accordance with claim 1 wherein said building unit includes at least one upstanding concrete supporting slab having a top portion with an upstanding bolting means protruding thereFrom and at least partially embedded therein, said first wall slab bottom portion having a recess therein, a tie plate means extending across at least a portion of said wall slab bottom portion recess and, being at least partially embedded in said wall slab bottom portion, said tie plate having an aperture therein; wherein said method further comprises the steps of placing said wall slab on top of said supporting slab top portion in bearing load relationship with said wall slab bottom portion being adjacent said supporting said top portion and said supporting slab bolting means extending through said wall slab bottom portion tie plate aperture and said wall slab being braced to plumb; and directly connecting said wall slab to said supporting slab below by tightening said bolting means until said slabs are directly anchored in a predetermined position relative to each other, whereby static load transfer across said first floor slab and down through said wall slab is provided substantially solely by the bearing relationship of said slabs.
Claim 6
Dependent Claim
399 words
A method in accordance with claim 4 wherein said wall slab is directly connected to said supporting slab in bearing load relationship thereon prior to placing said floor slab on said wall slab. 6 A method in accordance with claim 4 wherein said building unit includes a second substantially flat planar floor slab having a top portion, an opposed bottom portion, a pair of opposed end portions and a pair of opposed side portions; at least one of said second floor slab end portions having a recess therein, a tie plate means extending across at least a portion of said recess and at least partially embedded in said second floor slab end portion, said second floor slab tie plate having an aperture therein; wherein said method further comprises the steps of placing said second floor slab one portion on top of said supporting slab top portion in direct bearing load relationship on said supporting slab top portion, said upstanding protruding means including a plate having an aperture therein, substantially aligning said second floor slab tie plate aperture and said protruding means plate aperture so as to create a through hole between said plates; and directly connecting said second floor slab end portion to said supporting slab top portion by initially threading a bolting means through said through hole and tightening said bolting means until said supporting slab and said second floor slab are directly secured in a predetermined position relative to each other with said second floor slab bearing on said supporting slab, said placing step further comprising placing said first wall slab bottom portion in direct bearing load relationship on said second floor slab end portion, said supporting slab upstanding bolting means protruding so as to enable said extension thereof through said first wall slab bottom portion aperture when said first wall slab bottom portion bears on said second floor slab end portion, and fastening said first wall slab to said supporting slab by said upstanding bolting means, static load transfer across said first floor slab and down through said wall slab is provided substantially solely by the bearing relationship of said slabs and static load transfer from said first wall slab to said second floor slab is provided substantially solely by the bearing relationship therebetween and static load transfer from said second floor slab to said supporting slab is proivded substantially solely by the bearing relationship therebetween.
Claim 7
Dependent Claim
274 words
A method in accordance with claim 1 wherein said unit includes a second substantially flat planar floor slab having a top portion, an opposed bottom portion, a pair of opposed end portions and a pair of opposed side portions; at least one of said second floor slab end portions having a recess therein, a tie plate means extending across at least a portion of said recess and at least partially embedded in said second floor slab end portion, said second floor slab tie plate having an Aperture therein; wherein said method further comprises the steps of placing said second floor slab one end portion on top of said wall slab top portion in direct bearing load relationship on said wall slab top portion and adjacent to said first floor slab one end portion, said first floor slab tie plate being placed adjacent to said wall slab tie plate and said wall slab tie plate being placed adjacent to said second floor slab tie plate and being common to said floor slab tie plates and substantially aligning said apertures so as to create a through hole between all of said tie plates; and said direct connection step includes the further step of directly connecting said floor slab one end portions to each other and to said wall slab top portion by initially threading a bolting means through said through hole and tightening said bolting means until said slabs are directly secured in a predetermined position relative to each other, whereby static load transfer across said first floor slab and down through said wall slab is provided substantially solely by the bearing relationship of said slabs.
Claim 8
Dependent Claim
82 words
A method in accordance with claim 1 wherein said wall slab top portion tie plate aperture and said floor slab one end portion tie plate aperture are enlarged with respect to the bolting means extending therethrough in at least one direction and said substantial aperture aligning said enlarged tie plate apertures to compensate for manufacturing and erection tolerances and said tightening step comprises tightening said bolting means so as to enable slippage of said direct connection for rendering said building unit ductile.
Claim 9
Dependent Claim
140 words
A method in accordance with claim 1 wherein said building unit includes a shim means having an aperture portion therein and said method further comprises the step of inserting said shim means between said wall slab top position tie plate and said floor slab one end portion tie plate, said aperture aligning step comprises substantially aligning said tie plate apertures and said shim aperture to provide said through hole, and said direct connection step comprises directly connecting said first floor slab end portion to said wall slab portion by initially threading said bolting means through said through hole and tightening said bolting means until said slabs are directly secured in said predetermined position with respect to each other with said tie plates bearing in compression through said shim means interposed therebetween and on tension and sheer through said bolting means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |