Field-assembly concrete dowel basket

• US 10,280,568 B2
• Filed: 01/06/2017
• Issued: 05/07/2019
• Est. Priority Date: 01/06/2017
• Status: Active Grant

• Current Assignee: McTech, Inc.
• Original Assignee: Mctech Group LLC
• Inventors: McDonald, Stephen F.
• Primary Examiner(s): Will, Thomas B
• Assistant Examiner(s): Chu, Katherine J
• Application Number:
  US15/399,892
• Publication Number:
  US 20180195240A1
• Time in Patent Office: 851 Days
• Field of Search: 404 51, 404 52, 404 56, 404 60, 5239602
• CPC Class Codes: E01C 11/06 Methods of making joints
• CPC Class Codes: E01C 11/14 Dowel assembly ; Design or construction of reinforcements in the area of joints coupling devices for prefabricated units E01C5/005; combined with characteristic packings E01C11/08 - E01C11/12; removable holders E01C23/045
• CPC Class Codes: E01C 19/504 adapted to, or provided with, means to maintain reinforcing or load transfer elements in a required position removable supports for positioning reinforcing or load transfer elements in general E01C23/045
• CPC Class Codes: E01C 23/04 Devices for laying inserting or positioning reinforcing elements or dowel bars with or without joint bodies installing or inserting joint bodies per se E01C23/023, E01C23/026; Removable supports for reinforcing or load transfer elements non- removable supports therefor E01C11/02 E01C11/16; side forms adapted to supporting reinforcement E01C19/50; Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcements
• CPC Class Codes: E01C 23/045 Removable, e.g. reusable supports for positioning reinforcing or load transfer elements, adapted or not to also hold joint bodies

Abstract

A field-assembly dowel basket for concrete construction configured for in-the-field assembly from standardized components. This allows a number of standard components, including clips, connectors and wire frame components, to be conveniently transported and stored on construction sites to facilitate on-site assembly of dowel baskets on an as-needed, where-needed basis. Since the dowel basket components are much smaller than assembled baskets, they can be shipped and stored much more cost effectively. Standardization of components allows mass production, consolidates inventory management, and avoids the need for ad hoc fabrication for each construction site. On-site fabrication largely eliminates welding from the dowel basket fabrication process (wire frame clips may involve welding), avoids shipping of fabricated dowel baskets, and allows assembly of dowel basket by construction workers as opposed to highly skilled welding shops.

Claims

1. An unassembled field-assembly dowel basket for concrete construction configured for assembly into a dowel basket on an as-needed, where-needed basis, comprising:

a plurality of dowels;

a plurality of clips, each clip configured to removably support one of the dowels, each clip further configured to removably receive wire segments;

the wire segments including a plurality of end wires and a plurality of frame wires;

a plurality of “

T”

connectors removably attachable to the end wires and a plurality shipping wires;

the shipping wires configured to space apart basket sides assembled from the clips and wire segments to position pairs of clips such that each pair of clips supports an associated dowel.

2. The field-assembly dowel basket of claim 1, wherein the dowels are a bar dowels.

3. The field-assembly dowel basket of claim 1, wherein the dowels are a plate dowels.

4. The field-assembly dowel basket of claim 3, wherein each plate dowel is a sub-assembly comprising a pair of slats and a separator configured to removably support the slats.

5. The field-assembly dowel basket of claim 1, further comprising sockets for receiving the wire segments integrally formed as part of the clips.

6. The field-assembly dowel basket of claim 1, further comprising sockets that removably attach to the clips and removably attach to the wire segments.

7. The field-assembly dowel basket of claim 1, wherein the clips are configured to support the dowels from above.

8. The field-assembly dowel basket of claim 1, wherein the clips are configured to support the dowels from below.

9. An assembled field-assembly dowel basket for concrete construction, comprising:

a plurality of basket side sections, wherein basket each side section comprises two clips, two end wires, and one frame wire connecting the clips together, wherein the clips are removably attached to the end wires and the frame wire;

a plurality of basket web sections, wherein each basket web sections comprises two basket side sections, a “

T”

connector removably attached to each basket side section, and a shipping wire removably attached to the T″

connector spacing;

wherein the shipping wire and “

T”

connectors space the basket sides apart and position pairs of clips such that each pair of clips supports an associated dowel;

wherein the “

T”

connectors removably attach the basket web sections to each other to form dowel basket comprising a chain of basket web sections.

10. The field-assembly dowel basket of claim 9, wherein the dowels are a bar dowels.

11. The field-assembly dowel basket of claim 9, wherein the dowels are a plate dowels.

12. The field-assembly dowel basket of claim 11, wherein each plate dowel is a sub-assembly comprising a pair of slats and a separator configured to removably support the slats.

13. The field-assembly dowel basket of claim 9, further comprising sockets for receiving the wire segments integrally formed as part of the clips.

14. The field-assembly dowel basket of claim 9, further comprising sockets that removably attach to the clips and removably attach to the wire segments.

15. The field-assembly dowel basket of claim 9, wherein the clips are configured to support the dowels from above.

16. The field-assembly dowel basket of claim 9, wherein the clips are configured to support the dowels from below.

17. A method for constructing a concrete road at a road construction site, comprising

manufacturing or obtaining components of field-assembly dowel baskets;

transporting the components in bulk quantities to the construction site;

assembling a dowel basket of desired length from the components at the construction site;

positioning the dowel basket at the edge of a first concrete slab to be poured;

positioning a concrete form around dowels of the dowel basket, wherein the form comprises notches configured to accommodate the dowels;

pouring the first concrete slab so that a first portion of each dowel is embedded in the first slab and a second portion of each dowel extends from the first slab; and

after the first slab sets, removing the form and pouring a second concrete slab adjacent to the first concrete slab over the second portions of the dowels so that the dowels span a joint between the first and second concrete slabs;

and assembling each field-assembly dowel basket from removably attachable components, comprising;

a plurality of dowels;

a plurality of clips, each clip configured to removably support one of the dowels, each clip further configured to removably receive wire segments;

the wire segments including a plurality of end wires and a plurality of frame wires;

and a plurality of “

T”

connectors removably attachable to the end wires and a plurality shipping wires;

wherein the shipping wires are configured to space apart basket sides assembled from the clips and wire segments to position pairs of clips such that each pair of clips supports an associated dowel.

18. The method of claim 17, further comprising forming or cutting an expansion joint above the dowels at the joint between the first and second concrete slabs.

19. The method of claim 17, further comprising assembling each dowel from a pair of slats and a separator.