Stair Bracket

Abstract

A stair bracket for concrete formwork may be used to build formwork concrete stairs. It may be installed on a wood or steel runner or stinger, which may run above the concrete that may be placed or poured for stairs or steps. It may be fastened to a wood or steel runner with fasteners, for example, nails, screws, or bolts. It may be striped or removed as the concrete is curing to finish the edges or left until after it has cured or dried.

Claims

1. An apparatus for building a form for concrete stairs, comprising: a bracket made of a material selected from a list consisting of steel, aluminum, wood, plastic, and carbon fiber, the bracket at least 12 in height and 8 in width; cutouts from the bracket sized to hold 26 or larger wood; and holes to hold a fastening means for coupling the bracket to a stringer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0005] FIG. 1 illustrates stair brackets mounted to a stringer used to support a form for pouring concrete stairs, according to one implementation.

[0006] FIG. 2 illustrates a stair bracket according to one implementation.

[0007] FIG. 3 illustrates a tread form and a riser form supported by a stair bracket, according to one implementation.

[0008] FIG. 4 is a top view of tread forms supported by stair brackets for wider stairs requiring support from stair brackets fastened to a third stringer, according to one implementation.

DETAILED DESCRIPTION

[0009] A stair bracket for concrete formwork may be a bracket that may be used to

[0010] build concrete stair formwork. It may be installed on a wood or steel runner or stinger, which may run above concrete that may be placed or poured for stairs or steps. It may be fastened to a wood or steel runner with fasteners, for example, nails, screws, or bolts. It may be striped or removed as the concrete is curing to finish the edges or left until after it has cured or dried.

[0011] FIG. 1 illustrates Stair Brackets 100 mounted to Stringer 130 to be used to support Form 170 for pouring Concrete Stairs 140.

[0012] Stringer 130 may be mounted to Wood Support 160 and Wood Support 180 at an appropriate angle for pouring the stairs. Wood Support 160 may be mounted on Slab 120, for example. Stringer 130 may be made of wood, steel, or any other material strong and rigid enough to hold Stair Brackets 100 in place when concrete is poured. Stair Brackets 100 may be fastened to Stringer 130 using Fastener 110, which may be nails, screws, bolts, or other fastening means.

[0013] For example, coarse-grained soil, fine graded soil, commercial by-products, or controlled low-strength material may be used as Backfill 150. In general, finely graded soil with low to medium plasticity, including silty or clayey fine sands, lean clays, and gravelly clays, may be used as Backfill 150.

[0014] FIG. 2 illustrates Stair Bracket 200. Stair Bracket 200 may have Fastener Holes 210 in various places to allow for fastening it to Stringer 130. Stair Bracket 200 may be fastened to Stringer 130 with, for example, nails, screws, bolts, or another fastening means. Stringer 130 may be wood, steel, or other material.

[0015] Cutouts for Form 220 may hold 24, 26, 28, 210, or 212-inch wood as needed for building a desired form.

[0016] Stair Bracket 200 may be made out of 1/16- steel, 1/16- aluminum, 1/16-1 plastic, -2 wood, or any material strong enough to support a form when concrete is poured. It may be used with 24s and plywood, a 24, a 26, or a 28. Height 230 and Width 240 may be approximately 16, although sizes may vary depending on the size of form desired.

[0017] FIG. 3 illustrates Form Support 310 and Riser Form 320, supported by Stair Bracket 200, according to one implementation. Form Support 310 may be 28 or 210 wood, for example, and Riser Form 320 may be 26 or 28 wood, for example. One skilled in the art will recognize that Stair Bracket 200 may support many different configurations of tread size or riser size.

[0018] FIG. 4 is a top view of Form Supports 310 supported by Stair Brackets 200 for stairs requiring support from Stair Brackets 200 fastened to a third Stringer 130, according to one implementation. In this example, four Stair Brackets 200 are fastened to each of three Stiingers 130, providing support for four Tread Forms 310 and Riser Forms 320, which are not visible in this view.

[0019] While the detailed description above has been expressed in terms of specific examples, those skilled in the art will appreciate that many other configurations could be used. Accordingly, it will be appreciated that various equivalent modifications of the above-described implementations may be made without departing from the spirit and scope of the invention.

[0020] Additionally, the illustrated operations in the description show appointments occurring in a particular order. In alternative implementations, certain operations may be performed in a different order, modified, or removed. Moreover, steps may be added to the above-described logic and still conform to the described implementations. Further, operations described herein may occur sequentially, or certain operations may be processed in parallel. Yet further operations may be performed by a single processing unit or by distributed processing units.

[0021] The foregoing description of various embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto. The above specification, examples, and data provide a complete description of the manufacture and use of the invention. Since many embodiments of the invention can be made without departing from the spirit and scope of the invention, the invention resides in the claims hereinafter appended.