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1. (WO2019006123) PRECAST CONCRETE PANEL AND METHOD
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CLAIMS

1. A method of forming a panel to be used as a floor, wall, or roof structure, the method comprising:

positioning one or more forming members within a casting bed having a plurality of upright surfaces defining a generally rectangular interior area, the one or more forming members comprising an insulating material extending along a length dimension of the one or more forming members to define a plurality of rectangular-shaped channels in a parallel and spaced-apart relationship;

placing uncured concrete within the casting bed and allowing the concrete to cover the one or more forming members and substantially fill the channels; and

allowing the concrete to cure.

2. The method of Claim 1, further comprising positioning a plurality of nailer strips within the casting bed, wherein the one or more forming members comprise a plurality of components separated from one another on at least one side by one of the nailer strips.

3. The method of Claim 1, wherein the one or more forming members include a plurality of nailer strips respectively provided adjacent to a bottom of a plurality of the channels.

4. The method of Claim 3, wherein the nailer strips are respectively provided to every other one of the channels.

5. The method of Claim 1, further comprising at least one channel provided across a width of the forming member.

6. The method of Claim 1, wherein the one or more forming members includes a layer of insulating material defining a plurality of integrally-formed rectangular protrusions extending along the length dimension of the one or more

forming members in a parallel and spaced-apart relationship to one another to define the plurality of rectangular-shaped channels therebetween.

7. The method of Claim 1, further comprising placing uncured concrete within the casting bed before positioning the one or more forming members therein; and allowing the concrete to cure.

8. The method of Claim 7, wherein the one or more forming members are completely encased in the concrete after the placing of the uncured concrete within the casting bed and allowing the concrete to cover the one or more forming members and substantially fill the channels.

9. The method of Claim 1, wherein a protrusion is formed along an inner surface of each of two lengthwise members of the casing bed such that a grout keyway is formed in lengthwise sides of the panel.

10. The method of Claim 1, further comprising positioning a plurality of reinforcing members within the casting bed prior to placing the uncured concrete over the forming member.

11. A panel to be used as a floor, wall, or roof structure, the panel comprising: a concrete portion including a face portion and a plurality of joists extending inwardly from the face portion; and

a plurality of insulating portions configured between each adjacent pair of the joists.

12. The panel of claim 11, wherein the insulating portions are configured to extend further from the face portion than the joists.

13. The panel of Claim 12, further comprising a plurality of nailing strips provided respectively at ends of at least a plurality of the joists.

14. The panel of Claim 12, wherein each of the insulating portions are integrally formed with at least one adjacent insulating portion.

15. The panel of Claim 11, wherein the concrete portion further includes a back portion contacting ends of the joists opposite the face portion such that each of the insulating portions provided between the joists is completely surrounded by concrete.