METHOD AND APPARATUS FOR FORMING A FORMWORK FOR A CONCRETE SLAB
First Claim
1. A method of forming a formwork that is configured to form a ribbed or waffle concrete slab using a hollow block and a keystone connector, comprising:
- placing the hollow block on a site where the slab is to be formed; and
fitting the keystone connector to the hollow block, whereinthe keystone connector and the hollow block are configured to non-releasably lock onto one another when fitted together.
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Accused Products
Abstract
A method and apparatus for forming a formwork for a ribbed or waffle concrete slab is provided. The apparatus includes a rectangular block having a ledge around the base, the ledge having a dimension of half the desired width of the base ribs of the concrete slab, and a keystone connector. The keystone connector has an engagement portion configured to attach to an engagement portion on each block. In a method, the blocks are laid out so that the ledges of adjacent blocks are in contact. A keystone connector is then placed at each intersection of four blocks by attaching the respective engagement portions of the keystone connector and each block so that the keystone connector holds each of the four blocks in place relative to one another. The keystone connector is also configured to retain a reinforcing rod laid in the channel between adjacent blocks.
20 Citations
19 Claims
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1. A method of forming a formwork that is configured to form a ribbed or waffle concrete slab using a hollow block and a keystone connector, comprising:
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placing the hollow block on a site where the slab is to be formed; and fitting the keystone connector to the hollow block, wherein the keystone connector and the hollow block are configured to non-releasably lock onto one another when fitted together. - View Dependent Claims (2, 3, 4, 5)
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6. A formwork for a ribbed or waffle concrete slab, comprising:
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a hollow block having a top and four sides; a ledge extending from each side of the hollow block along an edge of the hollow block distal to the top of the hollow block, the ledge forming a base for the hollow block; and a keystone connector, wherein the keystone connector and the hollow block are configured to non-releasably lock onto one another. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A keystone connector, comprising:
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a pin having a resilient barb at an end of the pin, wherein the keystone connector is configured for use as a component of a formwork for a waffle or ribbed concrete slab. - View Dependent Claims (17)
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18. A hollow block configured for use as a component of a formwork for a waffle or ribbed concrete slab, comprising:
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a top and four sides; an aperture located at a corner of the hollow block; and a ledge extending from each side of the hollow block along an edge of the hollow block distal to the top of the hollow block, the ledge forming a base for the hollow block. - View Dependent Claims (19)
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Specification