Rebar cage stiffener ring

• US 8,387,329 B2
• Filed: 05/26/2011
• Issued: 03/05/2013
• Est. Priority Date: 05/26/2011
• Status: Active Grant

• Current Assignee: Dimension Fabricators, Inc.
• Original Assignee: Dimension Fabricators, Inc.
• Inventors: Stevens, Scott D., Stevens, Greg B.
• Primary Examiner(s): Glessner, Brian
• Assistant Examiner(s): Herring, Brent W
• Application Number:
  US13/116,307
• Publication Number:
  US 20120297719A1
• Time in Patent Office: 649 Days
• Field of Search: 526/498, 526/481, 526/491, 526/492, 526/494, 526/77, 526/87, 522/201, 522/208, 522/203, 526/493
• US Class Current: 52/649.8
• CPC Class Codes: E04C 5/0604 Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods E04C5/0631 takes precedence
• CPC Class Codes: E04C 5/163 the reinforcements running in one single direction
• CPC Class Codes: Y10T 29/49954 Fastener deformed after application
• CPC Class Codes: Y10T 29/49959 Nonresilient fastener
• CPC Class Codes: Y10T 29/49963 Threaded fastener

Abstract

A stiffener ring, and associated method and program product. A stiffener ring is provided having a generally annular shape for supporting a rebar cage, including: a plurality of primary cutouts spaced about an exterior edge of the stiffener ring, wherein each primary cutout is configured to receive a transversely mounted steel bar; a plurality of secondary cutouts spaced about an edge of the stiffener ring, wherein each of the secondary cutouts is configured to received an instrumentation pipe; and a set of flow holes cut into the stiffener ring to facilitate a flow of concrete through the stiffener ring.

Claims

1. A rebar cage, comprising:

a plurality of transversely mounted steel bars; and

a plurality of stiffener rings that support the transversely mounted steel bars, wherein each stiffener ring includes;

a plurality of primary cutouts spaced about an exterior edge of the stiffener ring, wherein each primary cutout locates and secures one of the transversely mounted steel bars mounted therein; and

a plurality of secondary cutouts spaced about an edge of the stiffener ring, wherein each of the secondary cutouts locates and secures an instrumentation pipe mounted therein.

2. The rebar cage of claim 1, wherein the primary cutouts include a U-shaped opening.

3. The rebar cage of claim 2, wherein the transversely mounted steel bars are secured in the plurality of primary cutouts using at least one of a wire, bolt and clamp.

4. The rebar cage of claim 1, wherein the secondary cutouts are spaced along an interior edge of each stiffener ring.

5. The rebar cage of claim 1, wherein each stiffener ring includes a set of mounting holes located proximate a secondary cutout.

6. The rebar cage of claim 5, further comprising a clamp that is inserted through the mounting hole to secure the instrumentation pipe.

7. The rebar cage of claim 1, wherein the primary cutouts comprise a double U-shaped opening that position and secure a bundle of transversely mounted steel bars.

8. The rebar cage of claim 1, wherein each stiffener ring further comprises a set of flow holes cut therein.

9. The rebar cage of claim 1, wherein approximately half of a cross-sectional area of each transversely mounted steel bar sits in the primary cutout and half extends outside the primary cutout.