A method of using a tilt-up or precast construction panel kit to form a tilt-up or precast construction panel core body adapted to be set in concrete in a tilt-up or precast construction panel form and have concrete poured over the core body thereafter to form a tilt-up or precast construction panel, the method comprising:
- obtaining a tilt-up or precast construction panel kit, the kit comprising:
- a plurality of core body segments, each core body segment comprising:
- a welded grid body comprising:
- two parallel plane grid mats of longitudinal and transverse wires crossing one another and welded together at the points of cross, the plane grid mats spaced apart from each other by a gap;
- and
- straight spacer wires cut to length and welded at each end to one wire of a respective one of the grid mats;
- a slab of heat-insulating material disposed within the gap between the parallel plane grid mats with a space between the slab of heat-insulating material and each of the two parallel plane grid mats;
- and
- two end cap grid mats each comprising a first plane grid mat of longitudinal and transverse wires, the first plane grid mat being formed into a U shape and affixed to the two parallel plane grid mats so as to encompass one of two opposite transverse ends of the slab of heat-insulating material within grid mat wires;
- and
- a plurality of plane splice mats of longitudinal and transverse wires crossing one another and welded together at the points of cross, the plane splice mats being adapted to be affixed bridging the plane grid mats of adjacent core body segments to link the adjacent core body segments into a unitary construct;
- wherein two end core body segments of the plurality of core body segments each comprises a side cap grid mat comprising a second plane grid mat of longitudinal and transverse wires, the second plane grid mat being formed into a U shape and affixed to the two parallel plane grid mats so as to encompass one longitudinal end of the slab of heat-insulating material within grid mat wires;
- securing one or more of the plane splice mats along substantially an entire first longitudinal edge of a first parallel plane grid mat of a first of the end core body segments with approximately half the one or more plane splice mats extending past the first longitudinal edge, the first longitudinal edge being an edge opposite the side cap grid mat;
- placing the first end core body segment on an underlying surface with the one or more plane splice mats lying on the underlying surface;
- repeating steps of:
- securing one or more of the plane splice mats along substantially an entire first longitudinal edge of another core body segment with approximately half the one or more plane splice mats extending past the first longitudinal edge;
- and
- placing the other core body segment with plane splice mats affixed thereto immediately adjacent a previous core body segment on the underlying surface such that the newly placed core body segment rests with a second longitudinal edge over the one or more plane splice mats of the previous core body segment and with the one or more plane splice mats of the other core body segment lying on the underlying surface;
- when only a second end core body segment remains, placing the second end core body segment immediately adjacent the previous core body segment on the underlying surface such that a longitudinal edge opposite the side cap grid mat of the second end core body segment is immediately adjacent the previous core body segment;
- and
- securing a plurality of the plurality of plane splice mats along substantially entire joints between adjacent body segments with approximately half of the one or more plane splice mats extending to each side of its respective joint, whereby the core body segments are secured into a unitary construct.