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US 11,739,525 B2Granted
Composite column formwork and method of use
AssigneeForma Technologies Inc.
InventorScott Armstrong
Life of this patent
Estimating the term…
Abstract
The disclosure presents a composite column formwork which utilizes a fiber reinforced polymer (FRP) stay in place container which incorporates horizontally coplanar support chairs bonded to the interior surface, closed ties bonded to the support chairs and a plurality of longitudinal rebar enforcements bonded to the closed ties. All of the components in a preferred embodiment are formed of a fiberglass material.
Claims20
A drilled pier formwork comprising:
- an external fiberglass container having an interior surface and an exterior surface;
- a plurality of horizontally coplanar support chairs bonded to the interior surface;
- a closed tie bonded to each horizontally coplanar support chair, of the plurality of horizontally coplanar support chairs;
- each horizontally coplanar support chair, of the plurality of horizontally coplanar support chairs, further comprises a semicircular ring, terminating at a first end and a second end, the first end and the second end each bonded to the interior surface;
- and,
- each longitudinal rebar reinforcement, of a plurality of longitudinal rebar reinforcements, bonded to the closed tie.
3 more elements
A composite drilled pier comprising:
- an external fiberglass container having an interior surface and an exterior surface;
- a plurality of horizontally coplanar support chairs bonded to the interior surface;
- a closed tie bonded to each horizontally coplanar support chair, of the plurality of horizontally coplanar support chairs;
- each horizontally coplanar support chair, of the plurality of horizontally coplanar support chairs, comprises a semicircular ring having two ends, wherein each end of the two ends is bonded to the interior surface;
- each longitudinal rebar reinforcement, of a plurality of longitudinal rebar reinforcements, bonded to the closed tie;
- and,
- a cured concrete filling, within the external fiberglass container, surrounding the plurality of horizontally coplanar support chairs, the closed tie and the plurality of longitudinal rebar reinforcements.
4 more elements
A method of forming a stay in place column comprising:
- providing an external fiberglass container having an interior surface and an exterior surface forming a void;
- providing a plurality of horizontally coplanar support chairs bonded to the interior surface;
- providing a closed tie bonded to each horizontally coplanar support chair, of the plurality of horizontally coplanar support chairs;
- providing each horizontally coplanar support chair, of the plurality of horizontally coplanar support chairs, with a semicircular ring having a pair of ends, where each end of the pair of ends is fixed to the interior surface;
- providing each longitudinal rebar reinforcement, of a plurality of longitudinal rebar reinforcements, be bonded to the closed tie;
- filling the void with concrete;
- allowing the concrete to cure;
- and,
- allowing the external fiberglass container to remain in place.
6 more elements
Dependencies are inferred from the claim text.