The present disclosure relates to reinforcement devices, systems and methods for use in constructing new structures, including post frame structures. Specifically, the present disclosure relates to reinforcement devices, systems and methods for replacing traditional wood and/or precast concrete columns utilized in building a new construction foundation, with a height adjustable foundation column assembly constructed from a corrosion resistant material. The present disclosure also relates to reinforcement devices, systems and methods useful for reinforcing existing post frame structures, particularly those with framing elements requiring repair.