Abstract: A structural panel core is disclosed for forming a wall or the like. The wall is formed using the structural panel core by adding an inner cementitious layer adjacent the filler layer and enclosing the interior lattice structure, and an outer cementitious layer adjacent the filler layer and enclosing the exterior lattice structure. The panel core includes an interior lattice structure, an exterior lattice structure, and a substantially continuous filler layer between the lattice structures. A plurality of connecting members each passed through the filler layer and fixedly interconnect the lattice structures, with each of the connecting members being secured at a compound inclination to the lattice structure such that an inclined angle is formed between each connecting member and any plane perpendicular to either interior or exterior lattice structures.